| Strength of Lightweight Concrete Under Triaxial Compression |
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| 作者单位： | Song Yupu，Zhao Guofan，Peng Fang and Shen Jina Doctor，Professor，Dalian University of Technology，Dalian 116023 .
Professor，Dalian University of Technology，Dalian 116023
Doctor，Dalian University of Technology，Dalian 116023 Engineer，Dalian University of Technology，Dalian 116023 |
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| 摘 要： | The strength of lightweight concrete under triaxial compressive stress is studied experimentally with the concrete triaxial apparatus designed by the authors, and is compared with that of normal concrete under the same stress state. Ninety-five 100 mm cubes under twenty stress ratios are tested. As compared with normal concrete, it is found that not only the multiaxial compressive strength of lightweight concrete is small, but also the ratio of the multiaxial compressive strength to the uniaxial compressive strength is small. The influence of the intermediate principal stress on the multiaxial strength of lightweight concrete is discussed. The strength criteria which are expressed in the principal stresses and the octahedral stresses respectively are proposed.
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Strength of Lightweight Concrete Under Triaxial Compression |
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| Authors: | Song Yupu Zhao Guofan Peng Fang and Shen Jina Doctor Professor Dalian University of Technology Dalian
Professor Dalian University of Technology Dalian
Doctor Dalian University of Technology Dalian Engineer Dalian University of Technology Dalian |
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| Institution: | Song Yupu,Zhao Guofan,Peng Fang and Shen Jina Doctor,Professor,Dalian University of Technology,Dalian 116023 .
Professor,Dalian University of Technology,Dalian 116023
Doctor,Dalian University of Technology,Dalian 116023 Engineer,Dalian University of Technology,Dalian 116023 |
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| Abstract: | The strength of lightweight concrete under triaxial compressive stress is studied experimentally with the concrete triaxial apparatus designed by the authors, and is compared with that of normal concrete under the same stress state. Ninety-five 100 mm cubes under twenty stress ratios are tested. As compared with normal concrete, it is found that not only the multiaxial compressive strength of lightweight concrete is small, but also the ratio of the multiaxial compressive strength to the uniaxial compressive strength is small. The influence of the intermediate principal stress on the multiaxial strength of lightweight concrete is discussed. The strength criteria which are expressed in the principal stresses and the octahedral stresses respectively are proposed. |
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| Keywords: | lightweight concrete triaxial compression strength criterion triaxial test |
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