多因素耦合作用下砒砂岩冻胀性能试验

发布时间：2018-01-01 22:29

  本文关键词：多因素耦合作用下砒砂岩冻胀性能试验　出处：《哈尔滨工业大学学报》2016年11期 　论文类型：期刊论文

  更多相关文章： 胀冻率 含水率 冷端温度 干密度

【摘要】：为研究含水率、温度、干密度与砒砂岩冻胀率的关系,针对内蒙古鄂尔多斯市准格尔旗砒砂岩进行不同含水率、不同温度、不同干密度下多因素耦合冻胀试验.研究结果表明:砒砂岩含水率在11%以下时,几乎不发生冻胀;含水率为12%~16%时,冻胀率随含水率增加呈线性增大;冻胀率随干密度的增大而增大,当冷端温度达到-20℃时,表现异常;冻胀率随冷端温度的降低而增大,但干密度为1.85 g/cm3的试件,冻胀率随冷端温度的降低冻胀率有减小态势.运用spss软件对试验数据进行多元非线性回归,确定了含水率、干密度、冷端温度多因素耦合作用下冻胀率的回归方程.
[Abstract]:In order to study the relationship between water content, temperature, dry density and frost-heaving rate of arsenitic sandstone, different moisture content and different temperature were carried out in Zhungeerqi Pisha sandstone, Ordos City, Inner Mongolia. Coupling frost heaving test with different dry densities. The results show that when the moisture content is below 11%, there is almost no frost heave. When the moisture content is from 12 to 16, the frost heaving rate increases linearly with the increase of water content. The frost heaving rate increases with the increase of dry density, and abnormal when the cold end temperature reaches -20 鈩，

本文编号：1366496