| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Numerical Simulation of Microscopic Failure Process of Plastic Steel Fiber Lightweight Aggregate Concrete |
| LI Ge, XU Zehua, NIU Jiangang
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| School of Civil Engineering,Inner Mongolia University of Science and Technology,Baotou 014010 |
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Abstract In order to study the failure mechanism of lightweight aggregate concrete structure of plastic fiber, and make an model of the steel fiber reinforced lightweight aggregate concrete by ANSYS finite element analysis software from the two development, using “element birth and death technology” describes the crack phase materials carried out form adopting finite element nume-rical technology to simulate splitting tensile test of plastic steel fiber reinforced lightweight aggregate concrete. Otherwise, the results of comparison of the crack of lightweight aggregate concrete and plastic steel fiber reinforced lightweight aggregate concrete process of evolution, shows that the crack of lightweight aggregate concrete first appeared in the lightweight aggregate, as the load increases, the crack propagates to the interface and mortar, and formed adjacent cracks that near to lightweight aggregate. For plastic steel fiber lightweight aggregate concrete, putting plastic steel fiber into lightweight aggregate concrete changed the crack propagation path, improved the ductility of lightweight aggregate concrete and suppress the propagation of the crack; meanwhile in the splitting tensile test. For plastic steel fiber lightweight aggregate concrete, most of the plastic steel fiber is pulled off, only a small part is extracted. In a word, the simulation results are in good agreement with the experimental results.
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Published: 31 July 2018
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2018, Vol. 32 
