Multi-functional acid-resistant concrete gel powder

Abstract

The invention relates to multi-functional acid-resistant concrete gel powder. The multi-functional acid-resistant concrete gel powder comprises the following components in percentage by weight: 45 to 80 percent of mineral admixture for basicity regulation and control, 12 to 35 percent of active volcanic ash substances, 5 to 10 percent of inert filler, 2 to 6 percent of reactive filler and 1 to 4 percent of active compound. The multi-functional acid-resistant concrete gel powder can remarkably improve the acid corrosion resistance of cement concrete, reduce the risks of surface burst, peeling and strength reduction of concrete under acid environment erosion conditions, and remarkably improve the permeability resistance and volume stability of concrete matrixes, is convenient to construct, and has a remarkable economic benefit. The multi-functional acid-resistant concrete gel powder can be widely applied to concrete works such as ports, wharves, plants, sewage treatment plants, tunnels, roads, bridges and civil buildings which serve in acid environments.

Description

technical field [0001] The invention belongs to the technical field of building materials and relates to a multifunctional concrete acid-resistant gel powder. Background technique [0002] Concrete is the most widely used building material in modern engineering. Its service environment is complex, and many structures serve in acidic environment. As we all know, acidic medium corrodes the alkaline compounds in concrete, and harmful mediums such as inorganic acids and organic acids have a great impact on the durability of concrete materials. The acid corrosion resistance of concrete matrix directly determines the service life of structures. The use of acid-resistant enhancement technology Improving the acid erosion resistance of concrete materials is one of the important ways to achieve high durability of the matrix itself. [0003] The ways to realize the acid-resistant strengthening technology of concrete materials mainly include the external protection technology of using ...

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Problems solved by technology

[0006] The purpose of the present invention is to solve the shortcomings of the existing main concrete acid resistance enhancement technology that can only be applied in the external protection of concrete, and the material itself has poor impermeability, high cost, and cannot be used directly in cement concrete. Functional concrete acid-resistant gel powder, which has the functions of acid corrosion resistance, impermeability, and reduced volume deformation, and has the characteristics of being directly mixed into concrete, easy to construct, less in dosage, and low in cost.

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