Sulfate-corrosion-resistance concrete additive and preparation method thereof

Abstract

The invention provides a sulfate-corrosion-resistance concrete additive and a preparation method thereof, belonging to the technical field of construction materials. The concrete additive is characterized by comprising the following raw material components in percentage by weight: 15 to 50 percent of silicate cement clinker, 40 to 80 percent of ground slag, 1 to 5 percent of zeolite powder, 1 to 3 percent of barium nitrate, 0.5 to 2 percent of polyoxyethylene ether, and 0.5 to 2 percent of vinyl resin, wherein the mixing amount of a gel material in the concrete is between 5 and 8 percent. Thepreparation method comprises the following steps of: uniformly mixing the barium nitrate, the polyoxyethylene ether and the vinyl resin according to proportions; grinding in a grinder to prepare mixture, wherein the degree of powder is between 400m<2> / kg and 500m2 / kg; and uniformly mixing the mixture, the silicate cement clinker, the ground slag and the zeolite powder into a stirring vessel according to the proportions and evenly stirring to obtain the finished product. By the sulfate-corrosion-resistance concrete additive and the preparation method thereof, the sulfate corrosion resistance of concrete can be remarkably improved, the raw materials are easily obtained, and the preparation process is simple.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a sulfate-resistant concrete admixture mainly composed of cement clinker and slag powder and a preparation method thereof. Background technique [0002] Concrete is the most widely used engineering material due to its many advantages. However, due to the complex external environment, the non-mechanical damage of concrete buildings is prominent during the long-term use process, and various problems caused by insufficient durability follow one after another. Much research has been done on the durability failure of concrete in coastal environments since the problem is evident primarily in coastal areas. For preventing chlorine salt from destroying concrete, there are many methods, using admixture is one of them, and a large amount of concrete admixtures resistant to chloride salt erosion have been invented now. [0003] With the continuous acceleration of my...

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Problems solved by technology

Direct use of concrete admixtures against chloride salt attack in coastal areas will not achieve good results

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