Heavy density silica fume for depot cement

heavy density silica fume for depot cement:This Microsilica is generally added to the cement used in the construction of bus stations.Black Silica Fume, as an admixture, has been widely used in the preparation of high-strength concrete, which can reduce the use of cement clinker [5-7], more importantly, silica fume has a strong activity, volcanic ash reaction and microaggregate filler effect can occur in concrete [8-91. In the preparation of high-strength concrete mixed with silica fume, it can improve the strength of the concrete, seepage resistance, freezing resistance, and chemical resistance, and can also inhibit or reduce the alkali aggregate reaction, the application is very promising [0-111 Due to the small density of silica fume, about 1/10 of the density of cement ((1-111), the application is very promising [0-111]. Silica fume in the preparation of high-strength concrete can improve the strength, impermeability, frost resistance and chemical resistance of concrete, can also inhibit or reduce the reaction of alkali aggregate, the application prospect is very broad [0-111 due to the small density of silica fume, about 1/10 of the density of cement ((150~250) kg/m), to silica fume producers in the storage and transportation of the many shortcomings brought about by the [21. Therefore, silica fume producers to apply encryption technology will be in the original state silica fume in the compressed air flow under the action of the rolled into a small granular clusters, silica fume volumetric density of up to 900% of the volume of the silica fume. Ash volume density of up to 900kgm3 [13] In recent years, China's market for concrete production of silica fume most of the silica fume has been encrypted silica fume.