Marginal Materials - State of the art

Three PIARC Technical Committees have devoted part of their preliminary work to the XVIIIth Congress (Brussels, 1987) to the use of marginal materials in road technology: Technical Committee on Testing of Road Materials, Technical Committee on Flexible Roads, Technical Committee on Earthworks, Drainage, Subgrade. The first part of the document concerns the use of marginal materials in earthworks and subgrade. The second part deals with the use of marginal materials in the construction of flexible [...]

Testing Hydraulic and Pozzolanic Binder Treated Materials

Test Specimen Dimensions, Specimen Compacting, Specimen Conservation, Determination of Mechanical Properties.

Testing Aggreates

Particle-size Analysis by Sieving, Los Angeles Test, Sand Equivalent, Accelerated Polishing Test, Determination of the Amount of Fines Passing 0.075 mm Mesh, Gravimetric Measurement: Absolute Density, Real Density, Bulk Density (with and without compacting), Aggregate Shape Measurement: Shape Factor with Callipers Flattening Coefficient, Sample Preparation for Testing, Frost Susceptibility, Elements for Aggregate identification, Determination of Sand Flow Coefficient, [...]

Environmental and Health Aspects Related to Working with Bituminous Mixtures

This report describes the arrangements made to limit the impact of dust and gaseous emissions in particular, both at the production and laying stage of bituminous mixtures. It also reviews the state of the art in the evaluation of health risks to workers on paver, with emphasis on the large difference between bitumen and tar with that regard. The general purpose of this report is to increase the awareness of Authorities, such as policy makers, decision makers, and the Industry of the relationship [...]

International Experiment to Compare and Harmonize Skid Resistance and Texture Measurements

This document presents the International Experiment involving 41 friction and texture measuring devices that operated on 58 locations (including 10 airfield runways) in Spain and Belgium in September-October 1992. The analysis of the results and conclusions bear on correlations between texture measuring devices and friction measuring devices; relationships between friction and texture according to different models; repeatability of each device; reproductibility between devices and a proposal [...]