The chemistry of the pore fluid of silica fume-blended cement systems
作者： J.A. Larbi , A.L.A. Fraay , J.M.J.M. Bijen
DOI: 10.1016/0008-8846(90)90095-F
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摘要: The behaviour of silica fume in cement systems, particularly, the pozzolanic reaction was investigated by monitoring chemistry pore solution fume-blended pastes. This supported heat hydration studies on similar mixes. Silica accelerated during early hours. increased rate is believed to be due enhanced precipitation products submicroscopic particles which possibly served as nucleation sites for crystallization hours when it existed chemically inert filler. study also revealed evidence within three days after formulations mixes, irrespective water-to-binder ratio used. apparent blends made with portland well blastfurnace slag cements. In both cases, OH−, Ca2+, K+, and Na+ were chemisorbed from solution.
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