硅灰石-硅溶胶浆体的固化机理研究

研究了硅灰石－硅溶胶浆体的固化过程及机理，结果表明：浆体的初期固化是由于硅灰石胶粒中Ca^2 的溶出，导致硅溶胶的凝胶化；后期固化则存在Ca^2 与溶胶作用形成类似水化硅酸钙产物的过程，硅溶胶中的Ca^2 离子促进硅灰石胶粒中Ca^2 的溶出，从而促进水化硅酸钙的形成。

Mechanism of Solidification of Wollastonite-Silica Sol Slurry

The process and mechanism of solidification of wollastonite silica sol slurry are studied. The results show that the initial solidification of wollastonite silica sol slurry is caused by the isolation of ions Ca 2+ from wollastonite, leading to the gelatinization of silica sol, that at the later stage of solidification, ions Ca 2+ combine with sol forming calcium silicate hydrate, and that ions Na + in silica sol promote the separation of ions Ca 2+ from wollastonite, and also promote the formation of calcium silicate hydrate.