Shrinkage properties of cement stabilized macadam reinforced with polypropylene fiber

ZHANG Peng; LI Qing-fu; HUANG Cheng-kui

Volume 8 Issue 4

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ZHANG Peng, LI Qing-fu, HUANG Cheng-kui. Shrinkage properties of cement stabilized macadam reinforced with polypropylene fiber[J]. Journal of Traffic and Transportation Engineering, 2008, 8(4): 30-34.

Citation:

ZHANG Peng, LI Qing-fu, HUANG Cheng-kui. Shrinkage properties of cement stabilized macadam reinforced with polypropylene fiber[J]. Journal of Traffic and Transportation Engineering, 2008, 8(4): 30-34.

Citation:

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Shrinkage properties of cement stabilized macadam reinforced with polypropylene fiber

1.
School of Water Conservancy and Environment Engineering, Zhengzhou University, Zhengzhou 450002, Henan, China
2.
State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China

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Author Bio:
ZHANG Peng(1978-), male, lecturer, PhiD, +86-371-63888043, zhangpeng8008@yahoo.com.cn
Received Date: 2008-01-06
Publish Date: 2008-08-25

Abstract

Abstract

In order to decrease the shrinkage of cement stabilized macadam, the influences of polypropylene fiber on the shrinkage properties of cement stabilized macadam were studied, its dry shrinkage property was measured by using micrometer gauge method, and its thermal shrinkage property was measured by using strain gauge method, the rules of its average dry shrinkage coefficient and average thermal shrinkage coefficient with the variation of the fiber volume content were analyzed.Test result shows that the addition of polypropylene fiber can observabley decreases the average dry shrinkage coefficient and average thermal shrinkage coefficient, the average dry shrinkage coefficient of long curing period is smaller than that of short curing period, while the average thermal shrinkage coefficient of long curing period is larger than that of short curing period.When the fiber volume content is less than 1‰, the average dry shrinkage coefficient and average thermal shrinkage coefficient observably decrease with the increase of polypropylene fiber dosage.So cement stabilized macadam reinforced with polypropylene fiber has favorable resistance on dry shrinkage and thermal shrinkage when the fiber volume content is appropiate, and its application in base course can improve the anti-cracking performance of pavement.
- pavement engineering,
- cement stabilized macadam,
- shrinkage test,
- polypropylene fiber,
- dry shrinkage coefficient,
- thermal shrinkage coefficient

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References(13)

References

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