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Bridge owners and designers were invited to a TRB webinar on Tuesday, December 3, 2019, from 1:00 PM to 2:30 PM ET. This webinar identified and compared several advanced performance structural materials that may be used on bridges. Material options that enhance the performance and durability of bridges have increased over the years, many of which may be broadly implemented on various bridges. T...

Bridge engineers were invited to a TRB webinar on Tuesday, November 12, 2019, from 2:00 PM to 3:30 PM ET. The webinar provided a summary of the findings from the National Cooperative Highway Research Program (NCHRP)’s Research Report 907 : Design of Concrete Bridge Beams Prestressed with Carbon Fiber Reinforced Polymer (CFRP) Systems. Due to the differences in the physical and mechanical behavi...

Road construction professionals were invited to a TRB webinar on Monday, October 7, 2019, from 2:00 PM to 4:00 PM ET. The webinar provided an overview of practices used to achieve high quality subgrade and base material when using lower quality or recycled materials. Professionals used laboratory and field data to predict field performance of high-quality bases and subgrades. These same process...

Pavement designers were invited to a TRB webinar on Monday, August 26, 2019, from 1:00 PM to 3:00 PM ET. The webinar discussed recent research and implementation efforts related to cold in-place recycling (CIR) and cold central-plant recycling (CCPR) technologies. Recently, CIR and CCPR research has addressed mixture design, material characterization, modeling, quality assurance, and integratio...

TRB conducted a webinar on Wednesday, April 24, 2019, from 1:00 PM to 2:30 PM ET that described micro surfacing and slurry seals and discussed their use and construction. These pavement preservation techniques are widely used and suitable for higher trafficked roadways, but practitioners have encounters some problems. Presenters examined these problems and identified possible improvements, incl...

TRB conducted a webinar on Tuesday, March 26, 2019, from 2:00 PM to 3:30 PM ET that discusses practices for applying pavement markings. While pavement markings are a safety measure with a long history and broad use, there is a wide variety of practices, resulting in significant differences in paint quality from location to location. This webinar presented a case study of one state department of...

TRB conducted a webinar on Monday, November 19, 2018, from 2:00 PM to 3:30 PM ET that discussed available methods for measuring moisture infiltration into pavements. Presenters described a universal method for measuring water infiltration into multiple types of in-place asphalt pavement surfaces. They also discussed novel materials, design, and/or construction practices that may minimize moistu...

TRB conducted a webinar on Wednesday, October 31, 2018, from 2:00 PM to 4:00 PM ET that provides a practical discussion of moisture damage in asphalt pavements. The presenters discussed real-world examples of how transportation agencies have investigated moisture damage in specific projects; useful cost-benefit considerations when addressing asphalt mixtures that may be susceptible to moisture ...

TRB conducted a webinar on Tuesday, October 2, 2018, from 2:00 PM to 3:30 PM ET that featured research from the National Cooperative Highway Research Program (NCHRP)’s Research Report 876 : Guidelines for Integrating Safety and Cost-Effectiveness into Resurfacing, Restoration, and Rehabilitation (3R) Projects. This webinar presented updated geometric design guidance for 3R projects. These guide...

TRB conducted a webinar on Monday, September 10, 2018, from 2:00 PM to 3:30 PM ET that featured research from the National Cooperative Highway Research Program (NCHRP)’s Research Report 877 : Performance-Based Mix Design for Porous Friction Courses. This webinar provided guidelines for a performance-based mix design procedure for porous friction courses (PFC) that includes laboratory testing. A...

TRB conducted a webinar on Monday, August 6, 2018, from 2:00 PM to 4:00 PM ET that explored construction of mass concrete structures, such as bridge piers and other large volume placements. The presenters discussed the reasons why it is important to control concrete temperatures in mass concrete construction projects, how to control in-place concrete temperatures, and the latest advances in pos...

TRB conducted a webinar on Thursday, June 21, 2018 from 2:00 PM to 3:30 PM ET that featured research from the National Cooperative Highway Research Program (NCHRP)’s Research Report 870 : Field Performance of Corrugated Pipe Manufactured with Recycled Polyethylene Content. This webinar discussed how to evaluate the field performance of corrugated high density polyethylene (HDPE) pipes manufactu...

TRB conducted a webinar on Tuesday, April 17, 2018, from 1:00PM to 2:30PM ET that will provide an overview of the design and construction of bases and subbases for concrete pavements and its impact on pavement performance. This webinar will focus on information in Technical Brief FHWA-HIF-16-005 .* The presenters discussed experiences with experimental sections constructed at the MnRoad test tr...

TRB conducted a webinar on Tuesday, March 27, 2018 from 2:00 PM to 3:30 PM ET that featured research from the National Cooperative Highway Research Program (NCHRP)’s Research Report 856 : Specifying and Measuring Asphalt Pavement Density to Ensure Pavement Performance. The in-place density of asphalt mixtures is the single most important property of the asphalt mixture in the pavement. This web...

TRB conducted a webinar on Thursday, March 22, 2018 from 2:00 PM to 3:30 PM ET that featured research from the National Cooperative Highway Research Program (NCHRP)’s Research Report 863 : Material Properties of Cold In-Place Recycled and Full-Depth Reclamation Asphalt Concrete. Pavement recycling techniques are effective for rehabilitating existing pavements or constructing new pavements while...

TRB conducted a webinar on Thursday, March 15, 2018, from 2:00PM to 3:30PM ET that will provide an overview about the state-of-the-practice for two types of permeable concrete pavement systems and their use. This webinar focused on information in Technical Brief FHWA-HIF-16-004 .* Presenters discussed the structural and hydrological design, factors for successful construction and maintenance, a...

TRB conducted a webinar on Wednesday, February 14, 2018 from 2:00PM to 3:30PM ET that provides an overview about the state-of-the-practice for roller-compacted concrete (RCC) pavements. RCC is placed with conventional or high-density asphalt paving equipment, and then compacted with rollers. This webinar focused on information in Technical Brief FHWA-HIF-16-003 .* It illustrated the uses for RC...

TRB conducted a webinar on Wednesday, December 6, 2017 from 2:00 PM to 3:30 PM ET that featured research from the National Cooperative Highway Research Program (NCHRP)’s Report 847 : Variability of Ignition Furnace Correction Factors. This webinar discussed the significant influences that affect the variability of asphalt and aggregate correction factors for ignition furnaces. Presenters discus...

TRB conducted a webinar on Monday, November 6, 2017, from 2:00 PM to 3:30 PM ET that features research from the National Cooperative Highway Research Program (NCHRP)’s Report 838 : Guidelines for Optimizing the Risk and Cost of Materials QA Programs. Presenters discussed how state departments of transportation (DOTs) can identify and evaluate opportunities that may enhance their materials qual...

TRB conducted a webinar on Wednesday, October 25, 2017 from 2:00 PM to 3:30 PM ET that featured research from the National Cooperative Highway Research Program (NCHRP)’s Report 843 : Long-Term Field Performance of Warm Mix Asphalt Technologies. Presenters highlighted field performance and material property determinants of several issues that arise with warm mix asphalt (WMA), including transver...

TRB conducted a webinar on Monday, October 23, 2017 from 2:00 PM to 3:30 PM ET that featured research from the National Cooperative Highway Research Program (NCHRP)’s Report 837 : Performance-Related Specifications for Emulsified Asphalt Binders Used in Preservation Surface Treatments. This webinar examined three pavement preservation surface treatments: chip seal, microsurfacing, and spray sea...

TRB conducted a webinar on Monday, September 25, 2017 from 2:00 PM to 3:30 PM ET that featured research from the National Cooperative Highway Research Program (NCHRP) Synthesis 495 : Use of Reclaimed Asphalt Pavement and Recycled Asphalt Shingles in Asphalt Mixtures. The webinar provided a summary of current practices for the use of reclaimed asphalt pavement (RAP) and recycled asphalt shingles...

TRB conducted a webinar on Monday, August 21, 2017 from 2:00 PM to 3:30 PM ET that discussed two new tools designed by the Long Term Pavement Performance (LTPP) Program: the LTPP Climate and LTPPBind Online tools. The LTPP Climate Tool offers users access to climate data derived from NASA’s Modern Era Retrospective-Analysis for Research and Applications (MERRA) database for applications includi...

TRB conducted a webinar on Thursday, August 17, 2017 from 2:00 PM to 3:30 PM ET that featured research from the National Cooperative Highway Research Program (NCHRP)’s Synthesis 500 : Control of Concrete Cracking in Bridges. This webinar examined the methods used to control concrete cracking in bridge superstructures and substructures and on the influence of cracking on long-term durability. Th...

TRB conducted a webinar on Thursday, July 20, 2017 from 2:00PM to 3:30PM ET that provided an overview of Intelligent Compaction (IC) technology, including how IC can be applied to soils, bases, and asphalt layers. IC deals with the continuous assessment of compacted layer properties using roller vibration parameters and roller speed integrated with GPS to provide comprehensive compaction infor...

TRB conducted a webinar on Thursday, April 20, 2017 from 2:00 PM to 3:30 PM ET that featured research from the National Cooperative Highway Research Program (NCHRP)’s Report 818 : Comparing the Volumetric and Mechanical Properties of Laboratory and Field Specimens of Asphalt Concrete. This webinar discussed how to evaluate the causes and magnitude of variability of specimen types tested in qual...

TRB conducted a webinar on Monday, April 17, 2017, from 2:00 PM to 3:30 PM ET about bases and subbases for concrete pavements. This webinar focused on information in Technical Brief FHWA-HIF-16-005 *. Presenters discussed rigid pavement layer configurations, design considerations including the importance of positive drainage, and materials. They also addressed factors for successful constructio...

TRB conducted a webinar on Thursday, February 16, 2017, from 2:00PM to 3:30PM ET on internal curing of concrete pavements. Internal curing is the process by which the curing water comes from the aggregates within the concrete instead of from the concrete’s surface as in the conventional curing process. This webinar focused on information in Technical Brief FHWA-HIF-16-006 .* The presenters disc...

TRB conducted a webinar on Monday, January 23, 2017, from 2:00PM to 3:30PM ET on roller-compacted concrete (RCC) pavements, which has not been widely used by U.S. highway agencies, but may provide benefits like cost-effectiveness and ease of construction. This webinar focused on information in Technical Brief FHWA-HIF-16-003.* The presenters will discuss RCC materials, mixtures, designs, and us...

TRB conducted a webinar on Tuesday, November 15, 2016 from 1:00PM to 2:30PM ET on material from Chapter 5 of National Cooperative Highway Research Program (NCHRP) Synthesis 445 : Practices for Unbound Aggregate Pavement Layers. This webinar demonstrated how natural mineral aggregate and recycled/by-product aggregate, as used in granular base and subbase, is successfully compacted to form paveme...

TRB conducted a webinar on Monday, October 24, 2016 from 2:00 to 3:30PM ET that presented how three Geosynthetic Reinforced Soil Integrated Bridge Systems (GRS IBS) performed. There are over 200 GRS IBS projects around the United States, several of which are being monitored in order to verify the expected performance of the structure. This webinar highlighted the overall observed performance of...

TRB conducted a webinar on Thursday, October 6, 2016 from 2:00PM to 3:30PM ET that discusses the performance grading system for hot-poured crack sealants. Crack sealants can be a cost-effective preventative maintenance method for pavements. When properly installed, crack sealants can extend pavement service life for as many as five years. This webinar discussed research from two U.S. Federal Hi...

TRB conducted a webinar on Wednesday, September 28, 2016 from 1:00PM to 2:30PM ET that featured research from National Cooperative Highway Research Program (NCHRP) Report 817: Validation of Guidelines for Evaluating the Moisture Susceptibility of WMA Technologies. This webinar discussed the moisture susceptibility thresholds previously identified for warm mix asphalt (WMA) during mix design. Th...

TRB conducted a webinar on Monday, September 12, 2016 from 2:00PM to 3:30PM ET on a new compaction device that can serve as a tool to improve soil-cement test specimen preparation. The plastic mold (PM) device can produce high-quality test specimens for soil-cement pavement layer thickness design testing, laboratory mixture design testing, and construction quality assurance testing. This webina...

TRB conducted a webinar on Monday, August 22, 2016 from 1:00PM to 2:30PM ET that discussed the construction of unbound aggregate layers. Roads last longer when unbound aggregate layers are built well. Because it is important to compact materials at the correct moisture levels, accurate and fast measurements of moisture and compaction during construction can improve quality and long term perform...

TRB conducted a webinar on Wednesday, August 17, 2016 from 2:00PM to 3:30PM ET that featured research from National Cooperative Highway Research Program (NCHRP) Report 669 : Models for Predicting Reflection Cracking of Hot-Mix Asphalt Overlays. Reflective cracking is caused by discontinuities, such as cracks and joints, in underlying layers. These discontinuities can propagate through an asphal...

TRB conducted a webinar on Thursday, August 4, 2016 from 2:00PM to 3:30PM ET that discusses corrosion control. Corrosion poses a risk to public safety and the environment; the annual direct cost of corrosion in the United States is estimated to be more than 3 percent of national GDP. This webinar helped engineers bridge the gap between academic research and practices to address corrosion infras...

TRB conducted a webinar on Thursday, June 30, 2016, from 2:00 to 3:30PM ET that features research from National Cooperative Highway Research Program (NCHRP) Synthesis 485 : Converting Paved Roads to Unpaved. The report summarizes recent road conversion projects in 27 states. Many local road agencies faced challenges with the process, but also reported cost savings after converting. This webinar...

TRB conducted a webinar on Wednesday, April 13, 2016 from 2:00-3:30PM ET that detailed the latest advancements in resistivity measurements in concrete. The webinar discussed the status of standard test method development for both bulk and surface resistivity. This webinar also mentioned factors that affect resistivity measurements, as well as examples of implementation of resistivity measuremen...

TRB conducted a webinar on Thursday, April 7, 2016 from 2:00-3:30PM ET that featured two different research projects about asphalt mixes conducted by the National Cooperative Highway Research Program (NCHRP) . This webinar explored the effects of foaming on asphalt warm mix properties and the effects of aging on the behavior of asphalt mixes. This webinar provided an overview of both NCHRP rese...

TRB conducted a webinar on Thursday, February 18, 2016 from 2:00PM to 3:30PM ET that featured a research report conducted by the National Cooperative Highway Research Program (NCHRP) that explores test methods for determining the specific gravity and absorption of coarse and fine aggregates. These methods are designed to improve the accuracy, precision, ease of use, and time required for condit...

TRB conducted a webinar on January 28, 2016 from 2:00 PM to 3:30 PM ET that examined continuously reinforced concrete pavement (CRCP). This webinar provided an overview of the CRCP technology and the major developments that have led to promising practices for CRCP design, construction, repair and rehabilitation, and maintenance of traffic around the world. This was the third in a three part ser...

TRB recorded presentations in September and October 2015 that focused on the proper preparation and installation techniques for crack sealing asphalt concrete pavements. This is the second installment in a series. The videos in this installment featured the types of installation equipment necessary, and highlighted promising practices and materials that could be used to ensure successful sealan...

TRB recorded presentations in October that summarized the findings of NCHRP Research Results Digest 391: Modulus-Based Construction Specification for Compaction of Earthwork and Unbound Aggregate . Panelists discussed an overview of modulus-based specifications, the steps to implementation, evaluation of tools available for implementation, and best practices for implementation. You may send any...

TRB conducted a webinar on Thursday, September 3, 2015 from 2:00PM to 3:30PM ET about cold central plant recycling (CCPR). CCPR is a paving technique that uses 100% recycled materials, which allows contractors to process the recycled asphalt pavement (RAP) material they already have. Traditionally, this technique has not been frequently used in the United States, but recent research illustrates...

TRB conducted a webinar on June 24, 2015, from 1:00pm to 3:00pm ET that presented material closely aligned with Chapters 2, 3, and 4 of NCHRP Synthesis 445: Practices for Unbound Aggregate Pavement Layers . Webinar presenters showed how natural mineral aggregate and recycled/by-product aggregate (as used in granular base and sub-base layers of pavements) is obtained, selected, characterized, an...

TRB conducted a webinar on April 1, 2015, from 1:00pm to 2:30pm ET that covered NCHRP Synthesis 463: Pavement Patching Practices , which summarizes current practices for patching small-scale defects in concrete and asphalt practices. Webinar presenters discussed the results of a literature search and a state survey related to pavement patching and repair, as well as present case studies and pre...

TRB conducted a webinar on February 26, 2015, from 1:00pm to 2:30pm ET that covered all sections of NCHRP Report 763: Evaluation of the Moisture Susceptibility of WMA Technologies , which presents proposed guidelines for identifying potential moisture susceptibility in warm mix asphalt (WMA) based on coordinated laboratory and field experiments. The webinar addressed the report’s motivation, ob...

TRB conducted a webinar on November 19, 2014, from 1:00pm to 2:30pm ET that summarized NCHRP 757: Long-Term Performance of Epoxy Adhesive Anchor Systems . This report describes standard test methods and specifications, design guidelines and specifications, and quality assurance guidelines and construction specifications for the use of adhesive anchor systems in transportation structures. A cert...

TRB conducted a webinar on October 20, 2014, from 1:00pm to 3:00pm ET that focused on precast concrete pavement (PCP) panel fabrication and installation. Webinar presenters covered SHRP 2 Report S2-R05-RR-1: Precast Concrete Pavement Technology , which provides comprehensive guidance on project selection, PCP system acceptance, and panel design, fabrication and installation. This webinar was t...

TRB conducted a webinar on October 8, 2014, from 1:00pm to 2:30pm ET that focused on the project selection, panel design, and development of precast concrete pavement (PCP) specifications and plans. Webinar presenters covered SHRP 2 Report S2-R05-RR-1: Precast Concrete Pavement Technology , which provides comprehensive guidance on project selection, PCP system acceptance, and panel design, fabr...

TRB conducted a webinar on September 24, 2014 that highlighted examples of subsurface investigation programs where appropriately selected geophysical and in-situ testing methods have been incorporated. This webinar is intended for geotechnical engineers, engineering geologists, highway and structural engineers, project managers, and other transportation professionals interested in increasing th...

TRB conducted a webinar on August 26, 2014, from 12:00pm to 1:30pm ET that covered ternary mixtures, including a broad overview of past and current research results. Webinar presenters also explained ternary specification and discussed current implementation efforts of ternary mixtures. A certificate for 1.5 Professional Development Hours (PDHs) was provided to attendees who registered and atte...

TRB conducted a webinar on August 25, 2014, from 2:00pm to 3:30pm ET that presented the findings of NCHRP Report 784: Best Practices for Crack Treatments for Asphalt Pavements . The webinar summarized practices used for crack sealing and crack filling in asphalt pavements. The presenter highlighted situations when state-of-the-art practices differ from the state of the practice, and identified ...

TRB conducted a webinar on August 13, 2014, from 2:00pm to 3:30pm ET that explored two states’ experiences with concrete maturity methods. Webinar presenters discussed how Iowa Department of Transportation has implemented maturity methods in the field and how Minnesota Department of Transportation has conducted field and laboratory projects to evaluate the applicability of the concrete maturity...

TRB conducted a webinar on July 2, 2014, from 2:00pm to 3:30pm ET that explored NCHRP Report 752: Improved Mix Design, Evaluation, and Materials Management, Practices for Hot Mix Asphalt, with High Reclaimed Asphalt Pavement Content , which describes proposed revisions to the American Association of State Highway and Transportation Officials (AASHTO) R 35, Superpave Volumetric Design for Hot Mi...

TRB conducted a webinar on June 19, 2014, from 2:00pm to 3:30pm ET that focused on Transportation Research Circular E-C171: Durability of Concrete , which updated a 1999 circular. A certificate for 1.5 Professional Development Hours (PDHs) was provided to attendees who registered and attended the webinar as an individual. Contact Reggie Gillum at RGillum@nas.edu for instructions on receivi...

TRB conducted a webinar on April 10, 2014, from 2:00pm to 3:30pm ET that covered all sections of  NCHRP Report 747: Guide for Conducting Forensic Investigations of Highway Pavements , which describes a process for conducting forensic investigations of pavements that is designed to help understand the reasons behind premature failures or exceptionally good performance. The webinar addressed...

As part of the SHRP2 Tuesdays Webinar Series, TRB conducted a webinar on March 25, 2014, from 2:00pm to 3:30pm ET that summarized the SHRP 2 project Real-Time Smoothness Measurements on Portland Cement Concrete Pavements During Construction (R06E). There is no fee to attend this webinar or other webinars in the SHRP 2 Series; however, participants must register in advance. A certificate for 1.5...

TRB conducted a webinar on December 4, 2013 from 1:00 p.m.-3:00 p.m. ET that highlighted research on the mechanism underlying asphalt healing and how it can be used in practice. Researchers introduced new ideas on the characterization and modeling of asphalt healing and explored how to employ these new ideas in practice. Researchers and practitioners were encouraged to atten...

As part of the SHRP2 Tuesdays Webinar Series, TRB conducted a webinar on December 3, 2013 from 2:00 p.m.-3:30 p.m. ET that explored the SHRP 2 project called Composite Pavement Systems (R21) . View the recorded webinar . This webinar explored the SHRP 2 Composite Pavement Systems research project, which provides guidelines and validated models, techniques, and specifications for using two compo...

TRB conducted a webinar on October 30, 2013 from 2:00 p.m.- 4:00 p.m. ET that summarized slag cement material characteristics, specifications, and its effect on fresh and hardened concrete properties. Contact Reggie Gillum at RGillum@nas.edu for more information on obtaining the recorded webinar. Webinar presenters will describe case studies from long-term field applications in transportation s...

TRB conducted a webinar on October 23, 2013 from 2:00 p.m.- 3:30 p.m. ET that will highlight TRB’s National Cooperative Highway Research Program (NCHRP) Research Results Digest 268 : Performance of Pavement Subsurface Drainage, which provides information about the overall effectiveness of subsurface drainage on the performance of flexible and rigid pavements, focusing on permeable bases. Contac...

As part of the SHRP2 Tuesdays Webinar Series, TRB conducted a webinar on September 24, 2013 from 2:00 p.m.-3:30 p.m. ET that explored the project Precast Concrete Pavement Technology, which produced the report Precast Concrete Pavement Technology as well as model specifications for precast concrete pavement. View the recorded webinar . There is no fee to attend this webinar and other webinars i...

** This webinar experienced technical difficulties on June 25. We will be broadcasting the second-half of the webinar on June 26, 2013 from 2:00 p.m. - 3:00 p.m. ET. Please re-register to view this June 26 webinar . TRB will conduct a webinar on June 25, 2013 from 2:00 p.m.- 4:00 p.m. ET that will present the results of a recently completed pooled fund research project on subsurface drainage fo...

As part of the SHRP2 Tuesdays Webinar Series, TRB conducted a webinar on June 11, 2013 from 2:00 p.m.- 3:30 p.m. ET that explored the project Performance Specifications for Rapid Renewal , which addresses the obstacles of defining fair and meaningful specification requirements when implementing rapid renewal performance specifications. View the recorded webinar . The benefits of performance spe...

TRB conducted a webinar on May 29, 2013 from 2:00 p.m.- 4:00 p.m. ET that presented the results of a recently completed pooled fund research project on subsurface drainage for slope stabilization. Contact Reggie Gillum at RGillum@nas.edu for information on accessing a link to the recorded webinar. This first webinar of a two-part series will introduce the research project, explain the limitatio...

TRB conducted a webinar on April 30, 2013 from 2:00 p.m.- 4:00 p.m. ET that will provide an overview of basic, promising practices for concrete paving, and the effects these practices may have on long term pavement performance. Contact Reggie Gillum at RGillum@nas.edu for instructions on accessing a link to the recorded webinar.  Webinar Presenters: Michael E. Ayers, Global Pavement Consul...

TRB conducted a webinar on April 25, 2013 from 2:00 p.m.- 3:30 p.m. ET that will feature research conducted by TRB’s Airport Cooperative Research Program (ACRP) about environmental planning aspects for deicing materials and the collection and monitoring of storm water management systems. Participants must register in advance of the webinar, and there is no fee associated with this webinar. View...

TRB conducted a webinar on February 7, 2013, from 2 p.m.- 4 p.m. ET that explored the results of a National Cooperative Highway Research Program (NCHRP) Project, “ Sensitivity Evaluation of MEPDG Performance Prediction .” Contact Reggie Gillum at  RGillum@nas.edu  for details to access a link to the recorded webinar. The MEPDG provides methodologies for the analysis and performance pr...

TRB conducted a webinar on January 30, 2013, from 12:00 p.m-2:00 p.m ET that provided an overview of potential risks for enhanced moisture-induced damage and practices for preventing damage by examining pavements used in Europe and the United States. Contact Reggie Gillum at RGillum@nas.edu for details to access a link to the recorded webinar. Moisture-induced damage in asphalt concrete wearing...

TRB conducted a webinar on December 11, 2012, from 2:00 p.m.-4:00 p.m. ET. This is the second webinar in a multi-part series that will explore the basics about the mechanical behavior of asphalt concrete. Contact Reggie Gillum at  RGillum@nas.edu  for information about receiving the recorded webinar. This webinar, organized by the TRB Standing Committee on Characteristics of Asph...

TRB conducted a webinar on November 13, 2012, from 12:30 p.m.-2:30 p.m. ET that examined the history and development of Portland-Limestone Cement (PLC) in North America. Participants must register in advance of the webinar, and there is a fee for non-TRB Sponsor employees. Contact Reggie Gillum at  RGillum@nas.edu  for information on obtaining a link to the recorded webinar. This web...

TRB conducted a webinar on October 31, 2012, from 2:00 p.m.-4:00 p.m. ET that explored pavement measurement standards and how these standards have been used to both identify and optimize quieter pavements nationwide. Contact Reggie Gillum at  RGillum@nas.edu  for information on obtaining a link to the recorded webinar. This webinar complements a TRB webinar previously conducted o...

TRB conducted a webinar on October 23, 2012, from 2:00 p.m.-3:30 p.m. ET that introduced new performance based sealant grading specifications for hot-poured crack sealants. Contact Reggie Gillum at  RGillum@nas.edu  for information on obtaining a link to the recorded webinar. The webinar will explore the findings of the completed U.S. Federal Highway Administration (FHWA) Pooled...

TRB conducted a webinar on October 18, 2012, from 2:00 p.m.-4:00 p.m. ET that is the first in two part series that explores the basics about the mechanical behavior of asphalt concrete. Contact Reggie Gillum at  RGillum@nas.edu  for information on obtaining a link to the recorded webinar. Basics of Asphalt Modeling: Part 2 will be held on December 11, 2012.  The webinar is d...

TRB conducted a webinar on September 19, 2012, from 2:00 p.m.-4:00 p.m. ET that summarized the current trends in transportation asset management related to pavement and bridges.  Contact Reggie Gillum for a recording of the webinar. The webinar will highlight sessions conducted at the 9th National Conference on Asset Management, which took place on April 16-18, 2011, in San Diego, Califor...

TRB conducted a webinar on September 7, 2012, from 2:00 p.m.-3:30 p.m. ET that explored the use of nanomaterials in asphalt binders used for paving applications. To request a recording of this webinar, email Reggie Gillum . The use of nanomaterials in pavement construction, particularly asphalt binders has the potential to lead to enhanced mechanical properties. Preliminary research demonstrat...

TRB conducted a webinar on August 30, 2012, from 2:00 p.m.-3:30 p.m. ET that explored  NCHRP Report 719: Calibration of Rutting Models for Structural and Mix Design that proposed revisions to the Mechanistic–Empirical Pavement Design Guide (MEPDG) and software to incorporate three alternative rut-depth prediction models. This webinar has been recorded. Contact Reggie Gillum for more detai...

TRB conducted a webinar on August 2, 2012, from 2:00 p.m.-4:00 p.m. ET that explored the use ground tire rubber in asphalt products. Contact Reggie Gillum at  RGillum@nas.edu  for information on receiving a recording of this webinar. The utilization of scrap tire rubber in asphalt products started in the mid-1960s for use in asphalt surface treatments as a pavement preservation pract...

TRB conducted a webinar on August 1, 2012, from 12:00 p.m.-1:30 p.m. ET that examined non-traditional road dust palliatives and soil stabilizers that may be cost-effective, long-lasting, and environmentally considerate alternatives. Contact Reggie Gillum at RGillum@nas.edu for information on receiving a recording of this webinar. The webinar is based on presentations given at a session titled D...

TRB conducted a webinar on April 10, 2012, that explored techniques for maintaining and managing granular surfaced roads. Participants must register in advance of the webinar, and there is a fee for non-TRB Sponsor employees. Contact Reggie Gillum at RGillum@nas.edu to request a recording of the webinar. Webinar presenters will share techniques for maintaining and managing granular surfaced roa...

TRB conducted a webinar on April 4, 2012, that explored methods to reduce sediment erosion from native and aggregate surfaced low-volume roads. Contact Reggie Gillum at  RGillum@nas.edu  to request a recording of the webinar.  This webinar will explore research conducted in the Pacific Northwest and Pennsylvania that tested alternative unbound aggregate treatments for the road su...

TRB conducted a web briefing or "webinar" on January 12, 2012, from 2:00 p.m.-4:00 p.m. EST that will explore the findings of a forthcoming TRB’s National Cooperative Highway Research Program (NCHRP) report about the optimization of tack coat for hot-mix asphalt placement. The report will be published in the first quarter of 2012. Contact Reggie Gillum at RGillum@nas.edu to request a recording...

TRB conducted a web briefing or "webinar" on October 12, 2011, that explored applications of advanced models to characterize, evaluate, and design asphalt pavements.  Presenters discussed the integration of material characterization and structural design to predict performance. Attendees learned more about laboratory experiments that could determine the parameters of mechanistic models and...

TRB conducted a web briefing or "webinar" on September 12, 2011, from 2:00 p.m. - 4:00 p.m. EDT that explored procedures for designing dense-graded, asphalt concrete mixtures that will be produced using currently available warm-mix asphalt (WMA) processes. WMA refers to asphalt concrete mixtures that are produced at temperatures approximately 50°F (28°C) or more cooler than typically used in th...

On August 24, 2011, TRB conducted a web briefing or "webinar" that explored principles and practices of designing and constructing quieter pavements.  Designing and constructing quieter pavements can be accomplished using the same materials and techniques commonly used today.  However, there remain knowledge gaps in how to do so effectively, and without compromising other importa...

On June 1, 2011, TRB conducted a web briefing or "webinar" that explored construction requirements and improved practices to construct continuously reinforced concrete pavements (CRCP). For more details, view a summary of the webinar. Email Reggie Gillum at  RGillum@nas.edu to receive a link to the recording of this session. There is no fee for employees of TRB sponsors to receive th...

On April 20, 2011, TRB conducted a web briefing or "webinar" that explored activities historical evolution, design, and United States experience with continuously reinforced concrete pavements (CRCP) . For more details,  view a summary of this webinar.  Email Reggie Gillum at  RGillum@nas.edu to receive a link to the recording of this session. There is no fee for employees ...

On February 16, 2011, TRB conducted a web briefing or "webinar" that explored improved practices for design, construction, and preservation of concrete pavements using dowel bars.   For more details, view a summary of this webinar.  Email Reggie Gillum at  RGillum@nas.edu to receive a link to the recording of this session. There is no fee for employees of TRB sponsors to re...

On December 15, 2010, TRB conducted a web briefing or "webinar" that explored the use of Quality-Related Specification Software (QRSS), a performance-related specification for hot-mix asphalt (HMA) pavement construction.  For more details, view a summary of this webinar.  Email Reggie Gillum at  RGillum@nas.edu to receive a link to the recording of this session. There is no fee ...

On December 8, 2010, TRB conducted a web briefing or "webinar" that explored ways to design and construct long-life concrete pavements (LLCP), state experiences implementing LLCPs, and incremental costs of LLCPs.  For more details, view a summary of this webinar.  Email Reggie Gillum at  RGillum@nas.edu to receive a link to the recording of this session. There is no fee for...

On November 29, 2010, TRB conducted a web briefing or "webinar" that explored ways to identify dominant material and structural properties contributing to moisture-induced damage in asphalt concrete pavement.      For more details, view a summary of this webinar.  Email Reggie Gillum at  RGillum@nas.edu to receive a link to the recording of this session. There is ...

On November 2, 2010, TRB conducted a web briefing or "Webinar" that explored enhanced test methods for determining the laboratory mixing and compaction temperatures of unmodified and modified asphalt binders, as addressed in TRB’s National Cooperative Highway Research Program (NCHRP) Report 648: Mixing and Compaction Temperatures of Asphalt Binders in Hot-Mix Asphalt .  For more detai...

On October 21, 2010, TRB conducted a web briefing or "Webinar" that explored ways to develop and validate precast concrete bent cap systems for use throughout the nation’s seismic regions.   For more details, view a summary of this webinar.  Email Reggie Gillum at  RGillum@nas.edu to receive a link to the recording of this session. There is no fee for employees of TRB s...

On October 7, 2010, TRB conducted a web briefing or "Webinar" that explored the applications of advanced models to characterize, evaluate, and design asphalt pavements.  For more details, view a summary of this webinar.  Email Reggie Gillum at  RGillum@nas.edu to receive a link to the recording of this session. There is no fee for employees of TRB sponsors to receive t...

On August 10, 2010, TRB conducted a web briefing or "Webinar" that explored main applications of asphalt emulsions and grades that can be used for each application.  For more details, view a summary of this webinar.  Email Reggie Gillum at  RGillum@nas.edu to receive a link to the recording of this session. There is no fee for employees of TRB sponsors to receive this r...

On August 5, 2010, TRB conducted a web briefing or "Webinar" that explored the application of nondestructive testing (NDT) technologies in the quality assurance of hot-mix asphalt (HMA) pavement construction, as published in the National Cooperative Highway Research Program’s (NCHRP) Report 626: NDT Technology for Quality Assurance of HMA Pavement Construction .  For more details, vie...

On July 28, 2010, TRB conducted a web briefing or "Webinar" that explored the use of precast concrete pavement as a way to provide faster repairs using durable, longer-lasting pavements. For more details, view a summary of this webinar.  Email Reggie Gillum at  RGillum@nas.edu to receive a link to the recording of this session. There is no fee for employees of TRB spons...

On May 24, 2010, TRB conducted a web briefing or "Webinar" that explored the use of warm-mix asphalt technologies in North America.  For more details,  view a summary of this webinar. Email Reggie Gillum at  RGillum@nas.edu to receive a link to the recording of this session. There is no fee for employees of TRB sponsors to receive this recording. Others must p...

On Wednesday, May, 2010, TRB conducted a web briefing or "webinar" that explored test methods for mineral filler that could improve the performance of hot-mix asphalt.  For more details,  view a summary of this webinar. Email Reggie Gillum at RGillum@nas.edu to receive a link to the recording of this session. There is no fee for employees of TRB sponsors to receive this recording. Oth...

On Monday, April 19, 2010, TRB conducted a web briefing or "webinar" that explored practical tips for using the Transportation Research Information Services (TRIS), Research in Progress (RiP), and Research Needs Statements (RNS) databases. For more details,  view a summary of this webinar. Watch a recording of the webinar. You will need  Windows Media Player 9 or higher to v...

On Wednesday, February 17, 2010, TRB conducted a web briefing or "webinar" that explored the results of TRB’s National Cooperative Highway Research Program (NCHRP) Report 611: Seismic Analysis and Design of Retaining Walls, Buried Structures, Slopes, and Embankments . For more details,  view a summary of this webinar. Email Reggie Gillum at RGillum@nas.edu to receive a link to the recordin...

On  Tuesday, November 10, 2009, TRB conducted a web briefing or "Webinar" that explored models that can be used to characterize the rheological behavior of asphalt binders to improve performance.   For more details,  view a summary of this webinar. Email Reggie Gillum at  RGillum@nas.edu to receive a link to the recording of this session. There is no fee for employ...

On October 28, 2009, TRB conducted a web briefing or "Webinar" that explored intrusive and non-intrusive experimental laboratory and field test methods for the estimation of stiffness properties (resilient modulus) of subgrades and unbound materials for pavement design. For more details,  view a summary of this webinar. Email Reggie Gillum at  RGillum@nas.edu to receive a link to...

On October 13, 2009, TRB conducted a web briefing or "Webinar" that explored the ability of asphalt emulsion technology to provide a low-temperature, low-energy, and volatile organic compound-free solution for constructing, maintaining, and rehabilitating pavement. For more details,  view a summary of this webinar. Email Reggie Gillum at  RGillum@nas.edu to receive a link to the ...

On September 17, 2009, TRB conducted a web briefing or "Webinar" that explored the latest issues in slope maintenance and slide restoration for transportation maintenance professionals.  For more details,  view a summary of this webinar. Email Reggie Gillum at  RGillum@nas.edu to receive a link to the recording of this session. There is no fee for employees o...

On May 7, 2009, TRB conducted a web-seminar or “webinar” that explored research and best practices for the processing, design, and production of high-reclaimed asphalt pavement mixes. For more details,  view a summary of this webinar. Email Reggie Gillum at  RGillum@nas.edu to receive a link to the recording of this session. There is no fee for employees of TRB sponsors to receiv...

On April 27, 2009, TRB conducted a web-seminar or “webinar” that examined the results of TRB’s National Cooperative Highway Research Program (NCHRP) project to develop performance-related specifications for hot-mix asphalt (HMA). For more details, view a summary of this webinar. Email Reggie Gillum at  RGillum@nas.edu to receive a link to the recording of this session. There is no fee for...

View and listen to selected presentations given at the 88th Annual Meeting in Washington, DC on January 11-15, 2009, as part of the TRB’s Conference Recording series.  The TRB Conference Recording series is designed to bring information presented at TRB conferences and meetings to those who were not able to attend. To request an archived recording, email Reggie Gillum . There is no fee for...

View and listen to selected presentations given at the TRB 87th Annual Meeting in Washington, D.C. , on January 13-17, 2008 , as part of the TRB’s Conference Recording series. The TRB Conference Recording series is designed to bring information presented at TRB conferences and meetings to those who were not able to attend.   To request an archived recording, email Reggie Gillum ...

View and listen to selected presentations given at the 86th Annual Meeting in Washington, D.C., on January 21-25, 2007, as part of the TRB’s Conference Recording series. The TRB Conference Recording series is designed to bring information presented at TRB conferences and meetings to those who were not able to attend.   To request an archived recording, email Reggie Gillum . There is no fe...

View and listen to selected presentations given at the TRB 2006 Annual Meeting Summary of Major Issues in Albany , NY , on March 15, 2006 prepared by the New York State Department of Transportation , as part of the TRB’s Conference Recording series. The TRB Conference Recording series is designed to bring information presented at TRB conferences and meetings to those who were not able to atten...

View and listen to selected presentations given at the 85th Annual Meeting in Washington , D.C. , on January 22-26, 2006 , as part of the TRB’s Conference Recording series. The TRB Conference Recording series is designed to bring information presented at TRB conferences and meetings to those who were not able to attend.   To request an archived recording, email Reggie Gillum . There is no...

2005 6th International Bridge Engineering Conference : Conference Recording   View and listen to selected presentations given at the 6th International Bridge Engineering Conference in Boston , MA , on July 17-20, 2005 , as part of the TRB’s Conference Recording series. The TRB Conference Recording series is designed to bring information presented at TRB conferences and meetings to those w...

2005 Joint Summer Conference : Conference Recording   View and listen to selected presentations given at the Joint Summer Conference in Boston , MA , on July 10-12, 2005 , as part of the TRB’s Conference Recording series. The TRB Conference Recording series is designed to bring information presented at TRB conferences and meetings to those who were not able to attend.   To request an...