SOLUTIONS

Geotechnical EngineeringHome > Solutions > Geotechnical Engineering

Experimental study of the soil-water characteristics of a decomposed soil using the relative humidity
Time:2017/7/26  Views:374  

Download Full Article: "Experimental study of the soil-water characteristics of a decomposed soil using the relative humidity"

 

ABSTRACT: Transient seepage analysis in unsaturated soils requires the soil-water characteristic curves

(SWCCs) and permeability functions. Very often, the soil-water characteristic of a soil at high suction range

(>500 kPa) is obtained by extrapolating laboratory-determined SWCC at low suction range (0 to 500 kPa) using

semi-empirical fitting methods. Relatively few measurements of SWCCs have been made on decomposed soils

at high suctions. In this study, SWCC at low suctions of a completely decomposed tuff (CDT) in Hong Kong was

measured using pressure plate apparatus, whereas the SWCC at high suctions was measured using the relative

humidity (RH) control technique. Hence, the SWCC of CDT at ‘‘full suction range’’ is obtained by combining

the measured data at low and high suctions. Comparisons and evaluations are then made with the extrapolated

data using several existing semi-empirical fitting methods.

Copyright © 2008~2015 Earth Products China Ltd. all rights reserved. 粤ICP备12064742号
Hong Kong Headquarter Address: 12/F, Asia Trade Centre,79 Lei Muk Road,Kwai Chung, Hong Kong Tel: +852 2392 8698
Hotline:400-700-9998 E-mail:marketing@epc.com.hk HTMLSITEMAP|XMLSITEMAP
;