|Table of Contents|

Performance promoting mechanism of asphalt mixture by basalt fiber(PDF)

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

Issue:
2012年02期
Page:
39-44
Research Field:
Publishing date:

Info

Title:
Performance promoting mechanism of asphalt mixture by basalt fiber
Author(s):
WEI You-po1; 2;  ZHANG Zheng-qi1;  SI Wei1;  LI Hong-bo2
1. Key Laboratory for Special Area Highway Engineering of the Ministry of Education, Chang'an University, Xi'an 710064, Shaanxi, China; 2. Henan Province Transportation Research Institute Co Ltd, Zhengzhou 450006, Henan, China
Keywords:
road engineering;  asphalt mixture;  basalt fiber;  asphalt mastic;  dynamic creep test
PACS:
U414.75
DOI:
-
Abstract:
The basalt fiber has high strength and elastic modulus, fine affinity in asphalt and aggregate, and good dispersion in asphalt mixture. In order to reveal the performance promoting mechanism of asphalt mixture by basalt fiber, the influence of basalt fiber on asphalt mastics was studied by DSR test and apparent viscosity test, the improvement of asphalt mixture water stability was analyzed by immersing Marshall test and frozen-thaw cycle test. The increasing of shearing resistance of asphalt mixture at high-temperature was presented by dynamic creep test and wheel rutting test. The results show that the anti-rutting factor increases dramatically after adding basalt fiber to SBS modified asphalt. The apparent viscosity curves of asphalt mastics with five kinds of basalt fiber levels decrease with increasing temperature, and the reduce rate is slow. The basalt fiber can reinforce asphalt mixture Marshall stability and retain Marshall stability remarkably with the increasing of fiber content, the dynamic rheological numbers of asphalt mixture with basalt fiber are improved significantly. The basalt fiber has an obvious effect on dynamic stability of asphalt mixture.4 tabs, 9 figs, 11 refs.

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Last Update: 2012-04-30