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A platform for research: civil engineering, architecture and urbanism
Cement base material expanding agent and preparation method thereof
The invention provides a cement base material expanding agent and a preparation method thereof. The preparation method sequentially comprises the following steps: uniformly mixing calcium carbide purification ash with an optional calcium and magnesium adjusting component to obtain a raw material; carrying out high temperature calcining under the following conditions: the calcining temperature is 800-1200DEG C, the calcining time is 60-120min, the heat insulation time is 60-120min, and the heating rate is 5-10DEG C/min; and cooling to obtain calcining particles, mixing the calcining particles with optional fly ash and/or nano-silica, and grinding to obtain the cement base material expanding agent. The optional calcium and magnesium adjusting component is at least one of calcium carbonate-containing mineral, magnesium carbonate-containing mineral, CaO and MgO; and the sum of the MgO content and the CaO content in the calcining particles is not smaller than 70%, and a mass ratio of CaO to MgO is 1.0-3.5. The preparation method adopts the calcium carbide purification ash as a main raw material, so the cement base material expanding agent obtained in the invention has an obvious expansion performance.
Cement base material expanding agent and preparation method thereof
The invention provides a cement base material expanding agent and a preparation method thereof. The preparation method sequentially comprises the following steps: uniformly mixing calcium carbide purification ash with an optional calcium and magnesium adjusting component to obtain a raw material; carrying out high temperature calcining under the following conditions: the calcining temperature is 800-1200DEG C, the calcining time is 60-120min, the heat insulation time is 60-120min, and the heating rate is 5-10DEG C/min; and cooling to obtain calcining particles, mixing the calcining particles with optional fly ash and/or nano-silica, and grinding to obtain the cement base material expanding agent. The optional calcium and magnesium adjusting component is at least one of calcium carbonate-containing mineral, magnesium carbonate-containing mineral, CaO and MgO; and the sum of the MgO content and the CaO content in the calcining particles is not smaller than 70%, and a mass ratio of CaO to MgO is 1.0-3.5. The preparation method adopts the calcium carbide purification ash as a main raw material, so the cement base material expanding agent obtained in the invention has an obvious expansion performance.
Cement base material expanding agent and preparation method thereof
WEN YONG (author) / WANG ZHICAI (author) / CHEN YUEPING (author)
2015-12-09
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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