Experimental Research on Flexural Toughness of Semi-rigid Base
Mixed into Polypropylene Fiber

Journal of Chongqing Jiaotong University(Natural Science) ›› 2007, Vol. 26 ›› Issue (4): 57-59.

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Experimental Research on Flexural Toughness of Semi-rigid Base Mixed into Polypropylene Fiber

MA Yin-hua¹，ZHANG Guang²，YI Zhi-jian¹，ZHONG Yu-shan²，HAN Ba-xiao²

1.School of Civil Engineering＆ Architecture，Chongqing Jiaotong University，Chongqing 400074，China； 2.Inner Mongolia Construction and Management Ofiqce of Inter-provincial Routeway，Inner Mongolia Hohhot 010020，China

Received:2006-06-01 Revised:2006-06-23 Online:2007-08-15 Published:2015-05-18

聚丙烯纤维半刚性基层材料弯曲韧性试验研究

马银华¹，张广²，易志坚¹，仲玉善²，韩八晓²

1.重庆交通大学土木建筑学院，重庆 400074；2.内蒙古省际通道建设管理办公室，内蒙古呼和浩特 010020

作者简介:马银华(1978一)，男，湖北仙桃人，硕士，主要从事力学、道路工程教学研究.E—mail：cqjtu@126.com.
基金资助:
内蒙古交通科技项目(NJ-2005-23)资助

Abstract

Abstract: By the four-point flexural test．the load-deflection curves of semi-rigid base mixed into low polypropylene fiber and plain base were got，and the flexural intensity and deformation perforMance in virtue of theMwere an alyzed. According to the standard measures of JCl and ASTMC1018-97，the toughness index was calculated separately．Toughness valuation shows that the semi-rigid base mixed into low polypropylene fiber is characterized by sustained load deformation performance and distinct advantage over plain base in toughness and anti-crack performance．

Key words: polypropylene fiber, semi-rigid base, cement stabilized gravel base, cement stabilized macadaMbase, toughness index：anti．crack performance

摘要： 通过4点弯曲试验，得到了低掺量聚丙烯纤维半刚性基层与不掺纤维的普通基层材料的荷载一挠度曲线，并据此分析了各类基层材料的弯曲强度、变形性能；按照日本砼协会(JCI)标准方法和美国材料与试验协会(ASTM c1018-_97)标准方法，分别计算得到了聚丙烯纤维半刚性基层材料与普通基层材料的韧性指数．韧性评价结果表明，低掺量聚丙烯纤维半刚性基层材料具有较强的持荷变形能力，其韧性和抗裂性能显著高于普通基层材料．

关键词: 聚丙烯纤维, 半刚性基层, 水泥稳定砂砾基层, 水泥稳定碎石基层, 韧性指数, 抗裂性能

CLC Number:

U416.214

MA Yin-hua ，ZHANG Guang ，YI Zhi-jian ，ZHONG Yu-shan ，HAN Ba-xiao. Experimental Research on Flexural Toughness of Semi-rigid Base Mixed into Polypropylene Fiber[J]. Journal of Chongqing Jiaotong University(Natural Science), 2007, 26(4): 57-59.

马银华，张广，易志坚，仲玉善，韩八晓. 聚丙烯纤维半刚性基层材料弯曲韧性试验研究[J]. 重庆交通大学学报（自然科学版）, 2007, 26(4): 57-59.

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Experimental Research on Flexural Toughness of Semi-rigid Base Mixed into Polypropylene Fiber

聚丙烯纤维半刚性基层材料弯曲韧性试验研究

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