摘要
为解决水泥灰土稳定砂的收缩裂缝,通过聚丙烯纤维水泥灰土稳定砂和普通水泥灰土稳定砂各龄期的无侧限抗压强度、劈裂强度、抗压回弹模量和干缩系数等路用性能指标的研究,认为聚丙烯纤维能显著改善水泥灰土稳定砂材料的路用性能,尤其在抗裂性能方面具有明显的优势。通过现场试验和追踪调查表明,加入聚丙烯纤维能减少裂缝病害。
In order to solve shrinkage cracking of cement-lime stabilized sand,the pavement performance indicators including unconfined compressive strength,splitting strength,compression modulus and shrinkage coefficient of polypropylene fiber reinforced cement-lime stabilized sand and general cement-lime stabilized sand in different ages are separately analyzed.It is considered that polypropylene fiber can significantly improve pavement performance of cement-lime stabilized sand,especially having clear advantages in the aspect of crack resistance.Through site test and tracking investigation,it is shown that polypropylene fiber mixture can reduce cracks.
出处
《路基工程》
2011年第4期129-131,134,共4页
Subgrade Engineering
基金
河南省交通厅项目(2006PⅡ03)
关键词
路基基层
水泥灰土稳定砂
聚丙烯纤维
抗裂性
subgrade base
cement-lime stabilized sand
polypropylene fiber
crack resistance
作者简介
牛向飞（1985-），男，河南洛阳人。硕士，主要从事道路新材料与新工艺研究。E-mail：nxiangfeil68168@yahoo．com．cn。
