|Table of Contents|

Influence of different fibers on road performance of SMA(PDF)

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

Issue:
2011年04期
Page:
16-21
Research Field:
Publishing date:
2011-08-20

Info

Title:
Influence of different fibers on road performance of SMA
Author(s):
LIU Ke-fei1; 2
1. Engineering Research Center of Ministry of Education for Catastrophic Prophylaxis and Treatment of Road and Traffic Safety, Changsha University of Science and Technology, Changsha 410114, Hunan, China; 2. School of Civil Engineering and Mechanics, Central South University of Forestry and Technology, Changsha 410004, Hunan, China
Keywords:
road engineering;  fiber asphalt;  SMA;  road performance;  RSCH
PACS:
U414.75
DOI:
-
Abstract:
Road performance of SMA(stone mastic asphalt)mixture with three various fibers(lignin fiber, mineral fiber, PAN fiber)are studied. Through the DSR(dynamic shear rheometer)test and the BBR(beam bending rheometer)test to evaluate the technical performance of fiber-asphalt glue, the tests reveal that adding fiber in asphalt can improve the high temperature properties of mixture while its low temperature crack resistance decreased, lignocellulosic asphalt glue's low-temperature performance is worse compared with the other two glues. For example of SMA-10, the rutting test, dynamic and static creep tests, RSCH(repeating shear with constant height)test are used to evaluate high-temperature performance of SMA with various fibers. It is pointed that the test results of rutting test, dynamic creep test and RSCH have good correlation, and these results can preferably reflect the influence of various fibers, the riscoelastic constant of dynamic creep test can predict the rutting of asphalt surface, the high-temperature performance of mineral fiber SMA-10 is good compared with the other two mixtures. Through four-points bending fatigue test, it is found that SMA-10 with PAN fiber has the best fatigue property. 10 tabs, 17 refs.

References:

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Last Update: 2011-08-20