Graduation Semester and Year

2016

Language

English

Document Type

Thesis

Degree Name

Master of Science in Civil Engineering

Department

Civil Engineering

First Advisor

Xinbao Yu

Abstract

Chemical treatment of pavement and foundation soil was conducted to improve workability during compaction, to increase the strength and stiffness of a foundation layer, and to reduce potential shrink and swell due to moisture changes and/or frost action. In this study, a commercial liquid ionic stabilizer (Tx ProChem) was evaluated based on its effectiveness to reduce swell potential and improve the strength of Texas expansive clay. This study also evaluated selected, representative liquid chemical stabilizers’ effect on expansive clay soil. The research presented herein assesses how much the chemical treatments changed the relevant engineering properties of the test soil as an indicator of the potential effectiveness of selected products. The effect of curing time on compressive strength and the swell potential of treated soil was analyzed. A mineralogy test was developed to identify the dominating clay mineral in a studied soil and to designate the mineral quantification of untreated soil. According to the basic tests, soil was classified as high plastic clay with 77% passing sieve 200. Tx ProChem test results showed a reduction in swell potential and maximum dry density of the soil samples due to addition of stabilizer. Maximum dry density decreased with an increase in stabilizer content.

Keywords

Expansive clay soil, Chemical treatment, Liquid ionic stabilizer, Swell potential, Strength

Disciplines

Civil and Environmental Engineering | Civil Engineering | Engineering

Comments

Degree granted by The University of Texas at Arlington

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