朱敏,倪万魁,苑康泽,李兰,李向宁,王海曼
ZHU Min, NI Wankui, YUAN Kangze, LI Lan, LI Xiangning, WANG Haiman

• 1:长安大学 地质工程与测绘学院，陕西 西安 710054

摘要(Abstract)：

为探寻适用于黄土地区海绵城市建设的具有较高强度和防渗性能的路基换填材料，通过对掺入水泥、聚丙烯纤维、膨润土的黄土进行强度和渗透性试验，并基于正交试验和田口方法的信噪比分析，获得了改良黄土各掺量的最优配比方案。结果表明：水泥掺量对改良黄土的无侧限抗压强度影响最显著，聚丙烯纤维掺量和长度对其渗透系数影响最大；改良黄土各掺量的最优配比为聚丙烯纤维长度取12 mm、聚丙烯纤维掺量取0.3%、膨润土和水泥掺量分别取3%和8%；在3、7、14 d养护龄期下，最优配比改良黄土的强度和渗透性能均优于不同配比的石灰改良黄土。改良的黄土各掺量最优配比可为黄土地区海绵城市道路建设中的路基处理提供参考。

关键词(KeyWords)： 改良黄土;聚丙烯纤维;膨润土;无侧限抗压强度;渗透系数
improved loess;polypropylene fibers;bentonite;unconfined compressive strength;permeability coefficient

Abstract:

Keywords:

基金项目(Foundation): 陕西省重点研发计划项目(2019ZDLSF05-07)

作者(Author): 朱敏,倪万魁,苑康泽,李兰,李向宁,王海曼
ZHU Min, NI Wankui, YUAN Kangze, LI Lan, LI Xiangning, WANG Haiman

DOI: 10.3969/j.issn.1001-1986.2020.06.026

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