期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 335, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2022.127531
关键词
Magnesium oxychloride cement (MOC); Thermodynamic modeling; Temperature; Phase assemblages of hydration products
资金
- National Natural Science Foundation of China [51878152]
- Ministry of Science and Technology of the People?s Republic of China ? [2015CB655102]
Magnesium oxychloride cement (MOC) is widely used in various industrial applications. This study investigates the influence of temperature on the stable hydrate assemblage in MOC using thermodynamic modeling. The results show that temperature has little effect on the hydrate phase assemblage in MOC at lower temperatures, but at higher temperatures, there is a change in the phase composition.
Magnesium oxychloride cement (MOC) is usually applied in industrial flooring, thermal insulation wall panels, flue pipes and grinding wheels. However, studies on the influence of temperature on the phase assemblage in MOC are limited and inconsistent. A thermodynamic modeling approach is employed to explore the influence of temperature on the stable hydrate assemblage in MOC. The results reveal that at lower temperatures, a variation in temperature has little effect on the hydrate phase assemblage in MOC, and the volume deformation of the samples prepared with the optimal proportion is very small. Phase 3 and brucite become stable phases at relatively higher temperatures. MOC samples prepared with the optimal proportion cured at higher temperatures experience volume shrinkage.
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