天然和经处理的非饱和粘性土在潮湿时的吸力变化

IF 1.1 Q3 ENGINEERING, CIVIL
I. Hussein, M. Jassam
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引用次数: 0

摘要

摘要 当前工作的目的是研究在不同初始饱和度 S0 = 20 % 和 50 % 条件下压实的天然土壤和用两种添加剂(石灰和硅灰)处理过的石膏土的吸力随时间和土壤水分特性曲线(SWCC)的变化情况。向上湿润的土壤。对取自伊拉克萨拉赫丁政府不同地点的三种石膏含量分别为 15%、35% 和 60% 的石膏土进行了试验。主要结果显示,随着石膏含量的增加以及石灰和硅灰的处理,空气进入值、残余值和整个饱和阶段所需的时间都在增加,而且硅灰处理过的土壤的空气进入值、残余值和整个饱和阶段所需的时间都大于石灰处理过的土壤。用硅灰处理过的土壤的流速低于用石灰处理过的土壤。当土壤在有效饱和度 S0 = 50 % 的条件下压实时,经过处理的土壤能更有效地延长整个饱和阶段所需的时间并降低流动速率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Suction Variation of Natural and Treated Unsaturated Gypseous Soils During Wetting
Abstract The current work is directed to study the variation of suction with time and soil water characteristics curve (SWCC) for natural and treated gypseous soil treated with two types of additive (lime and silica fume) compacted at different initial degrees of saturation S0 = 20 and 50 %. Soil subjected to wetting in an upward direction. Three types of gypsum soils were experimented with different gypsum content 15, 35, and 60 % taken from various sites in Salah Al-dean government, Iraq. The main results show that the air-entry value, residual values, and the time required for the entire saturation stage increases with increasing gypsum content and treatment with lime and silica fume and they for soil treated with silica fume are greater than for soil treated with lime. The rate of flow for soil treated with silica fume is less than that of soil treated with lime. The treated soil is more effective in increasing the time required for the entire saturation stage and decreasing the rate of flow when compacted at an effective degree of saturation S0 = 50 %.
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来源期刊
CiteScore
2.00
自引率
58.30%
发文量
69
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