Utilization of Gneiss in Asphalt Concrete Miztures
Construction of the pavement has consumed a huge amount of high grade aggregates, such as basalt, limestone etc. In some region, these aggregates are very scarce and have to be produced and transported from far aggregate quarries which would cause the waste of energy and resources as well as the increase of cost. Large quantities of gneiss exist in China, the use of gneiss as aggregates might help meet the highway constructing demands and save. In this paper, the feasibility is analyzed with respect to different aspects. Physical properties of gneiss aggregate were evaluated using Los Angeles abrasion, specific gravity and flakiness index. Mixture properties were characterized in terms of Marshall stability, moisture susceptibility, soak wheel track and low temperature cracking resistance property. Experiment results indicate that the physical properties of gneiss aggregates can satisfy the related specifications and these gneiss materials as aggregates can be used in asphalt pavement.Results also show that the optimal gradation component of the mixture consists of the gneiss as coarse aggregate and the limestone as fine aggregate. The use of hydrated lime can improve the moisture susceptibility of the mixtures containing gneiss aggregates.
Gneiss Aggregate Filler Utilization Asphalt mizture
Shaopeng WU Deming HU Ling PANG Hong WANG
Key Laboratory of Silicate Materials Science and Engineering of Ministry of Education Wuhan Universi Key Laboratory of Silicate Materials Science and Engineering of Ministry of Education Wuhan Universi School of Science, Wuhan University of Technology, Wuhan 430070, China
国际会议
10th International Symposium on Eco-Materials Processing and Design(第10届国际生态材料加工与设计研讨会)
西安
英文
1-4
2009-01-13（万方平台首次上网日期，不代表论文的发表时间）