期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 181, 期 -, 页码 659-672出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2018.06.075
关键词
Limestone powder; Action mechanism; Hydration process; Hydration products; Microstructure
资金
- National Science Foundation of China [51608187, 51461135001]
- Key Laboratory of Advanced Civil Engineering Materials (Tongji University), Ministry of Education [201702]
- State Key Laboratory of High Performance Civil Engineering Materials [2016CEM006]
Limestone powder (LS) has been widely used in cement-based materials; and reportedly, can influence their properties by filler, nucleation, dilution and chemical effects. The action mechanism of LS mainly depends on its particle size and amount. The filler effect of LS refines the microstructure and reduces the porosity of cement-based materials. Its nucleation effect accelerates the hydration of C3S, increases the amount of hydration products and reduces the porosity of cement-based materials at early ages. Its dilution effect reduces the hydration peak of C3S, decreases the amount of hydration products and increases the porosity of cement-based materials. Its chemical effect promotes the appearance of third hydration peak, forms carboaluminate and reduces the porosity of cement-based materials. (C) 2018 Elsevier Ltd. All rights reserved.
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