Composite gel material and preparation method thereof

Abstract

The invention relates to a composite gel material and a preparation method thereof, and belongs to building materials. The composite gel material comprises the following raw materials in percentage by weight: 28-55% of blast furnace slag powder, 0-18% of steel slag powder, 22-45% of coal ash, 5-15% of desulfurization gypsum and 6-10% of composite solid activator. The preparation method comprises the following steps of: sequentially adding the materials into a grinding machine and grinding for 20-60 minutes until the specific surface area is more than or equal to 300m<2> / kg; and fully mixing the materials with the steel slag powder which is ground until the specific surface area is more than 400m<2> / kg to obtain the composite gel material, or respectively grinding the materials and then uniformly mixing. The composite gel material has the advantages of availability of materials, high alkalinity, stability in air, outstanding activation effect, high industrial waste utilization rate, low cost, simple process and the like, and can be used as 325R-425 composite concrete or used as a gel material in concrete engineering and during concrete product manufacturing.

Description

technical field [0001] The invention relates to a composite gelling material and a preparation method thereof, belonging to building materials. Background technique [0002] Since the 1990s, my country's cement industry has embarked on an unsustainable development path of high output, high consumption, low efficiency and high environmental load. According to the latest statistics from the National Bureau of Statistics, my country's cement output reached 2.06 billion tons in 2011. Although the cement industry has improved its production process and pollutant control, the cement industry is still a heavy air-polluting industry due to its huge output. Therefore, the pollution of cement to the environment cannot be ignored. It must be fundamentally transformed through scientific and technological innovation, so that cement clinker can be used less or less, so that the cement concrete industry can embark on the road of sustainable development. At present, in order to solve the r...

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Problems solved by technology

At present, the research on the utilization of desulfurized gypsum and other industrial wastes is mainly focused on the combined utilization of desulfurized gypsum with fly ash and slag, but there are few reports on the combination of desulfurized gypsum and steel slag powder. Gypsum-based steel slag composite cementitious material is a good gypsum-based material

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