Analysis of water holding capacity and mechanism of compacted laterite soil

TAN Yun-zhi; KONG Ling-wei; GUO Ai-guo; WAN Zhi; ZHANG Hua

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Analysis of water holding capacity and mechanism of compacted laterite soil

更新时间：2026-06-25

- Analysis of water holding capacity and mechanism of compacted laterite soil
- Vol. 32, Issue S1, (2011)
- 作者机构：
  
  1. 三峡大学三峡库区地质灾害教育部重点实验室，湖北宜昌 4430022
  2. 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,武汉,430071
  3. 湖南省交通科学研究院,长沙,410015
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU443
- Online First：16 May 2011，
  
  Published：2011
- 稿件说明：
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TAN Yun-zhi, KONG Ling-wei, GUO Ai-guo, et al. Analysis of water holding capacity and mechanism of compacted laterite soil[J]. 2011, 32(S1).
DOI：

TAN Yun-zhi, KONG Ling-wei, GUO Ai-guo, et al. Analysis of water holding capacity and mechanism of compacted laterite soil[J]. 2011, 32(S1). DOI：

摘要

了解压实红黏土的持水性能是预防路基土体开裂和失稳的基础。首先，利用15 bar压力板仪研究了4种干密度压实试样脱湿路径下的土体持水特征曲线。发现持水曲线随着干密度减小，曲线中间部分呈现水平台阶状，且干密度越小水平台阶的长度越长。然后，结合相同干密度试样的孔隙分布特征曲线，从微观结构的角度分析了压实土体不同持水性能的原因。最后，通过数据拟合的方法建立了不同压实度土体的持水特征曲线方程

Abstract

It is necessary to understand the water holding capacity of laterite soil

which is the basis of preventing cracking and instability of the soil subgrade. Firstly

soil water characteristic curves (SWCCs) of compacted samples with four different dry densities were investigated by using 15 bar pressure plate apparatus. Test results show that there has appeared a plateau stage in the soil water characteristic curve with the decreasing of dry density. What’s more

the length of the plateau stage is intimately related to the dry density of samples

the lower the dry density is

the longer the length of the plateau stage is. Then

combined with pore distribution curves of the four samples

reasons for their different water holding capacities are investigated from the viewpoint of microstructure. Finally

SWCC equations for soil of different compactnesses are established through data fitting.

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Related Institution

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Key Laboratory of Geological Hazards in Three Gorges Reservoir Area of Ministry of Education, China Three Gorges University

College of Civil Engineering, Xinyang Normal University

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