期刊
CEMENT & CONCRETE COMPOSITES
卷 121, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.cemconcomp.2021.104080
关键词
Rubber-cement composite; X-ray computed tomography; Digital volume correlation; Fracture process; Volumetric strain
资金
- National Natural Science Foundation of China, China [U1801254, 51925805, 51727813]
- Project of Department of Education of Guangdong Province, China [2018KZDXM060]
- Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, China [2020B1212060074]
In this study, X-ray computed tomography and digital volume correlation were used to investigate the internal structure and volumetric strain of rubber-cement composites during fracture. The results showed that with the increasing rubber contents, the degree of dispersion of strain and the conductivity to force of samples were significantly improved.
In order to improve the plasticity of composites, rubber is usually incorporated in cement composites, but the rubber greatly increases complexity in the analysis of internal structures. In this study, X-ray computed tomography (XCT) and digital volume correlation (DVC) were adopted to investigate the internal structure and volumetric strain of rubber-cement composites during fracture. The fracture process of the composites was tracked by in situ XCT loading tests by analyzing the extracted data of rubber particles and cracks. The internal volumetric strains of the samples with different rubber contents at different loading stages were calculated by DVC. The outcomes exhibit that the degree of dispersion of strain and the conductivity to force of samples were improved significantly with the increasing rubber contents.
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