Abstract
Expansive clays exhibit a high potential for the volume change behavior when the soil moisture changes. The estimated annual cost of the damage to the facilities built on expansive clay in the United States exceeds 9 billion dollars. Because of the physicochemical nature of the expansive clay, the use of chemical agents to improve their engineering properties is common. This research investigated the effects of chemical agents on an expansive soil from Texas through a laboratory injection method. The agents used in this study included lime, potassium-based agents, and a group of ionic agents. Swelling tests, chemical tests, and soil suction tests were used to evaluate the stabilizing effects of those chemical agents. The testing results indicated that potassium-based stabilizer, is an effective stabilizing agent to control the swelling potential of the expansive clay. It can also be injected in the field to build a moisture barrier. The chemical tests on the injected Texas clay showed that the stabilizing mechanism of the ionic agents is possibly through the cations' exchange and the increase of the cations' concentrations in the soil pore water. © 2014 Korean Society of Civil Engineers and Springer-Verlag Berlin Heidelberg.
Recommended Citation
H. Zhao et al., "Effects of Chemical Stabilizers on an Expansive Clay," KSCE Journal of Civil Engineering, vol. 18, no. 4, pp. 1009 - 1017, Springer, Jan 2014.
The definitive version is available at https://doi.org/10.1007/s12205-013-1014-5
Department(s)
Civil, Architectural and Environmental Engineering
Keywords and Phrases
cations' exchange capacity; chemical stabilizers; expansive soil; soil suction
International Standard Serial Number (ISSN)
1976-3808; 1226-7988
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Springer, All rights reserved.
Publication Date
01 Jan 2014
