Effects of dry density on soil water characteristic curve of clay

DOI

10.2991/iccahe-16.2016.121How to use a DOI?

Keywords

dry density; unsaturated soil; soil water characteristic curve; VG model

Abstract

The soil water characteristic curve is a important parameter that expresses the unsaturated characteristic of water holding and moisture migration. With filter paper method, the matric suctions of soil samples in six water contents and three dry densities are measured, and the soil water characteristic curves in different dry densities are obtained. Then the soil water characteristic curves are fitted with VG model. The effects of dry density on soil water characteristic curve and the parameters of VG model are discussed. The results show that for the clay in different dry densities the parameter - the residual mass water content in VG model of soil water characteristic curve is a constant. The parameter a is linearly correlation with the reciprocal of air entry value. The dry density has great influence on soil water characteristic curve, so the influence must be considered in the analysis of moisture migration with hydro-mechanical coupling.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Mengling Hu
AU  - Hailin Yao
AU  - Jianxi Ren
PY  - 2016/10
DA  - 2016/10
TI  - Effects of dry density on soil water characteristic curve of clay
BT  - Proceedings of the 2016 5th International Conference on Civil, Architectural and Hydraulic Engineering (ICCAHE 2016)
PB  - Atlantis Press
SP  - 761
EP  - 767
SN  - 2352-5401
UR  - https://doi.org/10.2991/iccahe-16.2016.121
DO  - 10.2991/iccahe-16.2016.121
ID  - Hu2016/10
ER  -