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Effect of specific absorption of dacite on asphalt mixture and its treatment(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2012年05期
Page:
18-22
Research Field:
Publishing date:

Info

Title:
Effect of specific absorption of dacite on asphalt mixture and its treatment
Author(s):
LIU Ke-fei1;  JIANG Kang2
1. School of Civil Engineering and Mechanics, Central South University of Forestry and Technology, Changsha 410004, Hunan, China; 2. Hunan Communications Research Institute, Changsha 410015, Hunan, China
Keywords:
road engineering;  dacite;  water absorption;  optimal asphalt content;  pavement performance
PACS:
U414.1
DOI:
-
Abstract:
Taking water absorption of dacite as object, the difference of optimal asphalt contents of asphalt mixtures under different water absorptions were analyzed by the water absorption test and the marshall test. The influence of absorption on optimal asphalt content and pavement performance of asphalt mixture was verified by orthogonal test and performance test, and the causes were analyzed. The results show that the higher water absorption of dacite, the more optimal asphalt content of mixture, the different optimal asphalt contents which were induced by different specific absorptions of aggregates may directly affect the workability and pavement performance of asphalt mixture. Asphalt mixture with a content of 0.1% lignin fiber can effectively improve the adverse effect of absorption variability of dacite aggregate on the optimal asphalt content of mixture, and its pavement performance is much better than that of common dacite asphalt mixture.7 tabs,1 fig, 15 refs.

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Last Update: 2012-10-30