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| Chemo-mechanical coupling of cement-based material |
| Received:March 02, 2007 |
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| DOI：10.7511/jslx20095014 |
| KeyWord:cement paste chemo-mechanical coupling constitutive law chemical diffusion |
| Author | Institution |
| 张研 |
河海大学 南京 ;里尔科技大学 里尔,59650 法国 |
| 宋智通 |
河海大学 南京 ;南京水利科学研究院, 南京 |
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| Abstract: |
| Cement-based material has good resistance and it depends highly on the good coherence and mechanical behavior of cement paste. Based on experiment data and theoretical study, it is found that the leaching of calcium ions in calcium hydrates such as Ca(OH)2+ and C-S-H is a complex procedure. Assume that the cement-based material is a homogeneous material and based on the different mechanism of the hydrates in the chemical aggression, the diffusion's law is introduced. Referred to the different damage degree, a new chemical damage mechanic constitutive law is presented. In this paper, with the application of the equation of diffusion, a time dependent mechanics modeling can well describe the chemical-mechanical coupling phenomena for cement paste. |
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