Temperature-controlled triaxial compression/creep test device for thermodynamic properties of soft sedimentary rock and corresponding theoretical prediction |
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Authors: | Sheng Zhang Hirotomo Nakano Yonglin Xiong Tomohiro Nishimura Feng Zhang |
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Affiliation: | [1]School of Civil Engineering and Architecture,Central South University,Changsha,410083,China [2]Department of Civil Engineering,Nagoya Institute of Technology,Nagoya,4668555,Japan |
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Abstract: | In deep geological disposal of high-level nuclear waste,one of the most important subjects is to estimate long-term stability and strength of host rock under high temperature conditions caused by radioactive decay of the waste.In this paper,some experimental researches on the thermo-mechanical characteristics of soft sedimentary rock have been presented.For this reason,a new temperature-controlled triaxial compression and creep test device,operated automatically by a computer-controlled system,whose control software has been developed by the authors,was developed to conduct the thermo-mechanical tests in different thermal loading paths,including an isothermal path.The new device is proved to be able to conduct typical thermo-mechanical element tests for soft rock.The test device and the related testing method were introduced in detail.Finally,some test results have been simulated with a thermo-elasto-viscoplastic model that was also developed by the authors. |
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Keywords: | temperature control soft sedimentary rock thermal triaxial compression test thermal triaxial creep test |
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