Geology and Properties of Earth Materials 2006
TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 1967 includes papers that are grouped into four sections. Part 1: Low Volume Roads—Climactic and Seasonal Effects on Pavements and Safety addresses such topics as estimating the thermal conductivity of pavement granular materials and subgrade soils and overcoming seasonal truck-weight restrictions for thaw-weakened secondary roads in British Columbia. Part 2: Evaluation of Subgrade Resilient Modulus contains studies on permanent pavement deformation test procedures and correlations developed to estimate the resilient modulus of subgrade soils in Wisconsin. Part 3: Use of Unsaturated Soil Mechanics for Expansive Clay Problems and Pavement Design contains a model to predict pavement roughness caused by expansive soils and traffic, using the serviceability index and the national roughness index, plus case studies of pavement performance on expansive soils. Part 4: Pavement Subsurface Drainage offers research on environmental and traffic impacts on predictions derived from the Mechanistic–Empirical Pavement Design Guide, behaviors of drainable pavement base and subbase materials used by the Ohio Department of Transportation, and more.
Individual TRR Journals, which are published on an irregular basis throughout the year, consist of collections of peer-reviewed papers on specific transportation subject areas and modes. Abstracts of papers that make up this TRR are available through TRB's Publication Index.
TRR Journals may also be purchased on an annual subscription basis. Each year, TRB publishes approximately 45 volumes of the TRR Journal, containing more than 800 papers grouped by subject.
This Summary Last Modified On: 3/30/2014