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Preparation method of expansive concrete containing steel slag
The invention discloses a preparation method of expansive concrete containing steel slag, and belongs to the technical field of building materials. Different types of expansive concrete is prepared from ordinary portland cement, fine aggregate (steel slag sand and yellow sand), coarse aggregate (coarse steel slag and broken stone) and water. The preparation method comprises specific steps as follows: seven groups of samples which basically meet the technical parameter requirements of expansive concrete are preferably selected according to an orthogonal test; sample classification which is close to the expansion rate of expansive concrete is selected, and a mixture ratio of the expansive concrete containing the steel slag is preliminarily determined; whether the compressive strength of the expansive concrete containing the steel slag meets the design requirements of expansive concrete is calculated, and the water cement ratio of the expansive concrete containing the steel slag is adjusted; whether the expansion rate of the expansive concrete containing the steel slag meets the design requirements of the expansive concrete is calculated, and the average grain diameter and the substitution amount of steel slag sand in the expansive concrete containing the steel slag are adjusted; and then, the expansive concrete containing the steel slag is prepared, cast and maintained. According to the preparation method, the compressive strength and the expansion rate of the expansive concrete containing the steel slag can be adjusted, and the engineering application range is wide.
Preparation method of expansive concrete containing steel slag
The invention discloses a preparation method of expansive concrete containing steel slag, and belongs to the technical field of building materials. Different types of expansive concrete is prepared from ordinary portland cement, fine aggregate (steel slag sand and yellow sand), coarse aggregate (coarse steel slag and broken stone) and water. The preparation method comprises specific steps as follows: seven groups of samples which basically meet the technical parameter requirements of expansive concrete are preferably selected according to an orthogonal test; sample classification which is close to the expansion rate of expansive concrete is selected, and a mixture ratio of the expansive concrete containing the steel slag is preliminarily determined; whether the compressive strength of the expansive concrete containing the steel slag meets the design requirements of expansive concrete is calculated, and the water cement ratio of the expansive concrete containing the steel slag is adjusted; whether the expansion rate of the expansive concrete containing the steel slag meets the design requirements of the expansive concrete is calculated, and the average grain diameter and the substitution amount of steel slag sand in the expansive concrete containing the steel slag are adjusted; and then, the expansive concrete containing the steel slag is prepared, cast and maintained. According to the preparation method, the compressive strength and the expansion rate of the expansive concrete containing the steel slag can be adjusted, and the engineering application range is wide.
Preparation method of expansive concrete containing steel slag
YU FENG (author) / WANG XULIANG (author) / ZHANG YANG (author) / XU LIN (author)
2015-04-01
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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