聚丙烯纤维在水泥灰土稳定砂中的应用研究  

Application Study of Polypropylene Fiber in Cement-lime Stabilized Sand

作　　者：牛向飞[1] 乐金朝[1] 郭凤妍[1] 

机构地区：[1]郑州大学交通运输工程系,郑州450002

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)

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.

关 键 词：路基基层 水泥灰土稳定砂 聚丙烯纤维 抗裂性 

分 类 号：TU528.58[建筑科学—建筑技术科学]