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Title:

Effect of Matric Suction on Resilient Modulus of Compacted Subgrade Soils

Accession Number:

01024903

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

This paper evaluates the effect of matric suction on resilient modulus of compacted subgrade soils. Resilient modulus test was conducted on 2 cohesive soils at 3 levels of initial matric suction using the axis-translation technique. Due to the change in matric suction with loading cycles, the number of load cycles at each loading sequence needs to be increased. Experimental data indicate that increases in matric suction result in decreases in resilient strain and hence increases in resilient modulus. Sharp decreases in resilient modulus were observed for subgrade soils at low matric suction levels corresponding to moisture conditions approaching saturation. Matirc suction was found to be a key parameter in characterizing the resilient behavior of cohesive soils under repeated loading. Based on effective stress concept, a deviator stress-matric suction model was proposed to estimate the resilient modulus of unsaturated subgrade soils.

Monograph Accession #:

01020180

Report/Paper Numbers:

06-1997

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Huang, Wei-Hsing
Yang, Shu-Rong
Kung, Johnson H. S.
Lin, Horn-Da

Pagination:

21p

Publication Date:

2006

Conference:

Transportation Research Board 85th Annual Meeting

Location: Washington DC, United States
Date: 2006-1-22 to 2006-1-26
Sponsors: Transportation Research Board

Media Type:

CD-ROM

Features:

Figures (10) ; References (11) ; Tables (3)

Uncontrolled Terms:

Matric suction

Subject Areas:

Geotechnology; Highways; I42: Soil Mechanics

Source Data:

Transportation Research Board Annual Meeting 2006 Paper #06-1997

Files:

BTRIS, TRIS, TRB

Created Date:

Mar 3 2006 10:51AM