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Apr 26, 2012
Experimental Research on Dynamic Properties of Fly Ash Soil and Silty Clay after Freeze-Thaw Cycling
Authors: Han-Bing Liu, Hai-Bin Wei [email protected], and Yi-Ping GaoAuthor Affiliations
Publication: International Conference on Transportation Engineering 2007
Abstract
Triaxial tests on composite material from easy liquefaction fly ash and easy freezing silty clay according to dry weight (1:2) are conducted to investigate the dynamic properties of fly ash soils and silty clay for roadbed filling. Although variable confining pressure dynamic triaxial tests are made on the two kinds of soils after freeze-thaw cycles. The authors obtain the variety law between the dynamic strength and the number of circular of dynamic load and the number of freeze-thaw cycles. Test results show the relationship curves of the dynamic stress-strain and the dynamic elastic modulus-elastic strain, the dynamic modulus and the number of freeze-thaw cycles. The results of investigation show that the dynamic properties of fly ash soils(1:2) is better than silty clay after 3 freeze-thaw cycles, its dynamic strength and dynamic modulus reach stability. Based on.the evidence, it is concluded that the fly ash soils have superiority as roadbed filling in season regions.
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© 2007 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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Han-Bing Liu
Transportation College, Jilin University, Changchun, 130022
Transportation College, Jilin University, Changchun, 130022. E-mail: [email protected]
Yi-Ping Gao
Transportation College, Jilin University, Changchun, 130022
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