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Liquefaction Behavior of Coal Ash under Cyclic Loading
A series of undrained cyclic triaxial tests were conducted on coal ash specimens prepared by moist tamping to investigate factors affecting the cyclic behavior. One-way and two-way cyclic loadings were employed to investigate the effect of stress reversal on forms of cyclic behavior. The linkage of static and cyclic behavior of coal ash was investigated by comparing behavior of replicate specimens under cyclic and monotonic loadings. It was found thata unique critical state line (CSL) existed for coal ash irrespective of whether the critical state was achieved from monotonic test or post-cyclic shearing. When specimens with initial states at different positions relative to the CSL in e-log(p') were subjected to different types of cyclic loading, plastic strain accumulation, and cyclic liquefaction in the forms of cyclic instability and cyclic mobility were observed. Cyclic behavior of coal ash can be synthesized by the framework of critical state soil mechanics (CSSM).
Liquefaction Behavior of Coal Ash under Cyclic Loading
A series of undrained cyclic triaxial tests were conducted on coal ash specimens prepared by moist tamping to investigate factors affecting the cyclic behavior. One-way and two-way cyclic loadings were employed to investigate the effect of stress reversal on forms of cyclic behavior. The linkage of static and cyclic behavior of coal ash was investigated by comparing behavior of replicate specimens under cyclic and monotonic loadings. It was found thata unique critical state line (CSL) existed for coal ash irrespective of whether the critical state was achieved from monotonic test or post-cyclic shearing. When specimens with initial states at different positions relative to the CSL in e-log(p') were subjected to different types of cyclic loading, plastic strain accumulation, and cyclic liquefaction in the forms of cyclic instability and cyclic mobility were observed. Cyclic behavior of coal ash can be synthesized by the framework of critical state soil mechanics (CSSM).
Liquefaction Behavior of Coal Ash under Cyclic Loading
Yan, Jun (author) / Lo, Sik-Cheung Robert (author) / Rahman, Md. Mizanur (author) / Zhang, Jia-Jun (author)
Geo-Congress 2014 ; 2014 ; Atlanta, Georgia
Geo-Congress 2014 Technical Papers ; 343-351
2014-02-24
Conference paper
Electronic Resource
English
Liquefaction Behaviour of Coal Ash under Cyclic Loading
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