'Oxidation' Cracking of Asphalt Pavement

摘要

The report deals with research work to evaluate the average moisture content of asphalt pavements under field conditions. Weather data for the northern part of Mississippi was analyzed in relation to the rate of evaporations from pavements and the conclusion reached that moisture is present in the void spaces of the pavement at all times. Chemical analysis of asphalt extracted from weathered samples shows no increase in oxygen content. Local asphalts were found to contain about 6 percent sulphur which was considered unusual. (Author)