Pavement Performance Research on Fine Volcanic Ash Modified Asphalt Mastic and Mixture

摘要

In this paper, based on advanced test methods such as laser particle sizer, scanning electron microscope, DSR and BBR,studies on physical properties of fine volcanic ash are carried out and the effect of single and composite modification on asphalt mastics and concrete by fine volcanic ash are also studied. Cost-effective of asphalt concrete modified by fine volcanic ash are analyzed as well. Results indicated fine volcanic ash can be qualified as a filler modifier for asphalt mixture and it significantly improves asphalt pavement performance and reduces project cost. Fine volcanic ash has favorable social and economic benefits and a broad application prospect.