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Mechanical Properties of sea water sea sand coral concrete Modified with Different Cement and Fiber Types

Journal of Renewable Materials 2020年第8期8卷 915-937页

作者： Xibo Qi Yijie Huang Xiaowei Li Zhenhua Hu Jingwei Ying Dayong Li Department of Building Engineering Shandong University of Science&TechnologyQingdao266590China Shandong Key Laboratory of Civil Engineering Disaster Prevention and Mitigation Shandong University of Science and TechnologyQingdao266590China Guangxi Key Laboratory of Disaster Prevention and Engineering Safety Guangxi UniversityNanning530004China

The mechanical properties of modified sea water sea sand coral concrete(SWSSCC)under axial compression were experimentally *** different parameters were considered in this test:types of cement and *** experimental campaign was developed involving uniaxial compression tests and the use of digital image correlation(DIC)method to analyze the strain distribution and crack propagation of *** results indicated that the compressive strength and elastic modulus of SWSSCC were improved by adding stainless steel fibers(SSF),while polypropylene fibers(PF)enhanced the SWSSCC peak *** was found that the elastic modulus and strength of SWSSCC using ordinary Portland cement(OPC)were higher compared to specimen with low alkalinity sulphoaluminate cement(LAS).Typical strain distribution changed with the variation of fiber *** propagation and characteristics of cracks in SWSSCC containing PF were similar to those of cracks in ***,the propagation of cracks and the development of plastic deformation in SWSSCC were effectively hindered by adopting ***,an analytical stress-strain expression of specimen considering the influences of fibers was *** obtained results would provide a basis for the application of SWSSCC.

关键词： sea water sea sand coral concrete modified concrete mechanical properties stress-strain curve crack propagation strain distribution

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