施工技术 2013年1月下 86 CONSTRUCTION TECHNOLOGY 第42卷第2期 聚丙烯纤维对水泥灰土稳定砂力学性能的影响 刘恒,李锐铎 (河南城建学院交通工程系,河南平顶山467036) [摘要]针对水泥灰土稳定砂基层容易出现裂缝的现状,在水泥灰土稳定砂中入一定量的聚丙烯纤维,进行了有 关试验研究.试验表明:与未掺加的相比,掺入聚丙烯纤维对水泥灰土稳定砂的力学性能指标有极大改善.结合 实际工程,铺筑了试验路段,并对试验路段进行跟踪观测和评价分析,取得了较好的使用效果. [关键词]公路工程;水泥灰土稳定砂;聚丙烯纤维;力学性能;抗冲刷性能 [中图分类号]TU528.58 [文献标识码]A [文章编号]1002-8498(2013)02-0086-03 The Influence of Polypropylene Fiber on the Mechanical Property of Cement Lime-soil Stabilized Sand Liu Heng Li Ruiduo The Faculty of Traffic Engineering He'nan University of Urban Construction Pingdingshan He'nan 467036 China) Abstract:Cement lime-soil stabilized sand is prone to cracks.According to this situation this paper carried a series of laboratory experiments to study the effect of adding polypropylene fiber to the cement lime-soil stabilized sand.The results show that the mechanical properties of cement lime-soil stabilized sand were significantly improved with added polypropylene fiber.Combined with a practical project a pilot testing road was paved and its performance was monitored and evaluated.The testing gave a satisfying result. Key words:road construction;cement lime-soil stabilized sand;polypropylene fiber;mechanical properties;anti-erosion performance 0引言 关的技术指标:黄色,最大干密度1.88g/cm3 液限 水泥灰土稳定砂基层在我国一些地区应用广 30.0% 塑限18.2%,塑性指数11.8. 泛,该基层材料具有强度高、稳定性与板体性好的 2)砂 优点,同时也有利于就地取材.不足之处是容易出 根据本试验当地的具体情况,决定使用淮河的 现反射裂缝而造成路面早期破坏. 河砂,并对试验所用的河砂进行筛分,有关的筛分 聚丙烯纤维弹性模量低的特点使得其掺人有 数据如表1所示. 关混合料时,其中的纤维能起到加筋的效果,从而 表1砂的筛分结果 大大提高相关混合料的力学性能.本文针对聚丙 Table 1 Sc...