Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Modified slag powder and preparation method thereof
The invention relates to a modified slag powder and a preparation method thereof. The preparation method comprises the following steps: performing heat treatment on the silico-calcium slag to obtain the heat-treated silico-calcium slag; mixing the heat-treated silico-calcium slag with coal ash, slag, gypsum, a cement grinding aid and an additive and grinding to obtain the modified slag powder. According to the preparation method, the silico-calcium slag powder is prepared by use of the silico-calcium slag by-product of producing alumina from the coal ash, and therefore, the application ways of the silico-calcium slag are expanded and the performance indices such as the strength of the concrete can be improved; on the other hand, the modified slag powder prepared by use of the method is superior to common blast furnace slag powder in both early strength and long-term strength, and the various indices at least conform to the standards of the national S95 grade slag powder, and therefore, the modified slag powder can be used as a cement or concrete admixture; the production operation process of the modified slag powder is simple and convenient and the problems of consumption and high value utilization of the silico-calcium slag can be effectively solved; in short, the modified slag powder has great popularization and application value.
Modified slag powder and preparation method thereof
The invention relates to a modified slag powder and a preparation method thereof. The preparation method comprises the following steps: performing heat treatment on the silico-calcium slag to obtain the heat-treated silico-calcium slag; mixing the heat-treated silico-calcium slag with coal ash, slag, gypsum, a cement grinding aid and an additive and grinding to obtain the modified slag powder. According to the preparation method, the silico-calcium slag powder is prepared by use of the silico-calcium slag by-product of producing alumina from the coal ash, and therefore, the application ways of the silico-calcium slag are expanded and the performance indices such as the strength of the concrete can be improved; on the other hand, the modified slag powder prepared by use of the method is superior to common blast furnace slag powder in both early strength and long-term strength, and the various indices at least conform to the standards of the national S95 grade slag powder, and therefore, the modified slag powder can be used as a cement or concrete admixture; the production operation process of the modified slag powder is simple and convenient and the problems of consumption and high value utilization of the silico-calcium slag can be effectively solved; in short, the modified slag powder has great popularization and application value.
Modified slag powder and preparation method thereof
YANG ZHIJIE (Autor:in) / SUN HENGHU (Autor:in) / LIU XIAOMING (Autor:in) / SUN JUNMIN (Autor:in) / MIAO RUIPING (Autor:in)
08.07.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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