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Strength and Microfabric of Expansive Soil Improved with Rice Husk Ash and Lime
Joint Authors
Ma, Jinrong
Su, Yunhe
Liu, Yuyi
Tao, Xiangling
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-10-31
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Expansive soil has harmful effect on engineering.
Rice husk ash (RHA) has high pozzolanic activity, so it can form new cementing material with lime or cement to solidify soil.
In this paper, the tests of free expansion rate, water ratio limit, and optimum moisture content (OMC) are carried out; then, RHA and lime were added to artificial soil in different proportions of 5, 10, 15, and 20% by weight, in which the ratio of RHA to lime is 80 : 20.
The unconfined compressive strength (UCS) in different curing age is measured, and the improvement effect of RHA and lime to expansive soil can be obtained.
Finally, the reason of improvement effect is explained by using the scanning electron microscope (SEM).
The results of the study show that (1) for the best utilization effect, the optimum percentage of RHA is 12% and lime is 3%; (2) the UCS is 2.6 times of the pure soil after curing of 14 d under the optimum percentage; (3) the curing age has a significant effect on strength; (4) the main reason for the strength increase of the modified soil is that the crystal produced by the pozzolanic activity fills the pores of the soil.
American Psychological Association (APA)
Ma, Jinrong& Su, Yunhe& Liu, Yuyi& Tao, Xiangling. 2020. Strength and Microfabric of Expansive Soil Improved with Rice Husk Ash and Lime. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-8.
https://search.emarefa.net/detail/BIM-1125933
Modern Language Association (MLA)
Ma, Jinrong…[et al.]. Strength and Microfabric of Expansive Soil Improved with Rice Husk Ash and Lime. Advances in Civil Engineering No. 2020 (2020), pp.1-8.
https://search.emarefa.net/detail/BIM-1125933
American Medical Association (AMA)
Ma, Jinrong& Su, Yunhe& Liu, Yuyi& Tao, Xiangling. Strength and Microfabric of Expansive Soil Improved with Rice Husk Ash and Lime. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-8.
https://search.emarefa.net/detail/BIM-1125933
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1125933