|Table of Contents|

Experiments on motion parameters of soil moisture in artificial filling subgrade(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2010年05期
Page:
17-21
Research Field:
Publishing date:
2010-10-20

Info

Title:
Experiments on motion parameters of soil moisture in artificial filling subgrade
Author(s):
MAO Xue-song1;  HOU Zhong-jie1;  KONG Ling-kun1; 2
1. Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an 710064, Shaanxi, China; 2. Shandong Province Group of Highway Construction, Jinan 250012, Shandong, China
Keywords:
road engineering;  artificial filling subgrade;  volume fraction of water-content;  freeze-thaw cycle;  resilient modulus;  remolded soil
PACS:
U416.1; TU 411
DOI:
-
Abstract:
The experiments are carried out on the low liquid-limit clay and the silt. The characteristics curve of the soil moisture are defined by the filter paper method and fitted based on the Van Genuchten model. The time-variety curve of the volume fraction of the soil water-content is tested by the moisture transmit test instruments. Based on the Dercy law, the method for defining the hydraulic conductivity and the diffusivity of the soil is put forward combining the characteristics curve and the time-variety curve of the volume fraction of the soil water-content. The results show that the applied filter paper method and the moisture measurement system for defining the hydraulic conductivity and the diffusivity of the soil are convenient and feasible. The fitted characteristics curve of the moisture movement by the Van Genuchten model can meet the requirement of the engineering application. 3 tabs, 6 figs, 12 refs.

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Last Update: 2010-10-20