粉煤灰改性分散性土的变形特性研究

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英文篇名：Study on deformation characteristics of modified dispersed soil with fly ash 作者：张宏 英文作者：ZHANG Hong;School of Hydraulic Engineering,Yangling Vocational and Technical College; 关键词：土力学 ; 分散性土 ; 粉煤灰 ; 压缩试验 英文关键词：soil mechanics;;dispersed soil;;fly ash;;compressibility test 中文刊名：SLJS 英文刊名：Water Conservancy Construction and Management 机构：杨凌职业技术学院水利工程分院; 出版日期：2019-07-23 出版单位：水利建设与管理 年：2019 期：v.39;No.312 基金：陕西省水利科技计划项目(2016slkj-19) 语种：中文; 页：SLJS201907003 页数：5 CN：07 ISSN：11-4446/TV 分类号：16-20

摘要

分散性土是一种特殊土类,抗冲蚀性能很低,对工程的危害很大。本文以陕西杨凌黄土为原始土样,采用加入碳酸钠的方法配制人工分散性土,在最优含水率状态不同压实度下,进行压缩试验,研究粉煤灰掺量和压实度对改性分散性土变形特性的影响。试验分析得出粉煤灰掺量为8%、压实度不低于0.94时,分散性土的压缩性有会大幅度降低,可以满足工程的要求。
        Dispersed soil is a special kind of soil with very low erosion resistance and great harm to projects. Shaanxi Yangling loess is adopted as the original soil sample in the paper, and the artificial dispersed soil is prepared by adding sodium carbonate. Compression test is carried out to study the influence of fly ash content and compactness on the deformation characteristics of the modified dispersed soil under the condition of the optimal water content and different compactness according to the test analysis. When the fly ash content is 8%, and the compactness is not less than 0.94, the compressibility of dispersed soil will be significantly reduced according to test analysis. It can meet the requirements of the projects.

引文

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