摘要
首先分析了纤维掺量、长度对水泥稳定碎石抗压强度的影响规律,确定了纤维的最佳掺量与长度。而后针对水泥稳定碎石等半刚性材料容易发生开裂的问题,试验研究了纤维掺量对水泥稳定干缩、温缩指标的影响规律,试验结果表明:适量掺加纤维,不仅可以提高水泥稳定碎石的抗压强度,还可以有效降低水泥稳定碎石的收缩率,提高水泥稳定碎石的抗抗裂性能。
Firstly,the effects of fiber content and length on compressive strength of cement stabilized gravel are analyzed,and the optimum fiber content and length are deter mined.Then,in view of the problem that semi-rigid materials such as cement-stabilized gravel are prone to cracking,the effects of fiber content on the performance indexes of cement-stabilized such as dry shrinkage and temperature-shrinkage are studied experimentally.The experimental results show that the appropriate amount of fiber can not only increase the compressive strength of cement stabilized gravel,but also effectively reduce the shrinkage rate of cement stabilized gravel and improve the anti-cracking performance of cement stabilized gravel.
作者
闫利峰
李具文
YAN Li-feng;LI Ju-wen(Tianjin Expressway Group Co.,Ltd.Tianjin 300384)
出处
《黑龙江交通科技》
2020年第2期14-15,18,共3页
Communications Science and Technology Heilongjiang
关键词
公路工程
纤维
水泥稳定碎石
抗压强度
收缩
Highway engineering
fiber
cement stabilized gravel
Compressive strength
Shrinkage
