Environment-friendly anti-cracking waterproof agent for concrete and preparation method thereof

Abstract

The invention discloses an environment-friendly anti-cracking waterproof agent for concrete and a preparation method thereof. The anti-cracking waterproof agent comprises the following raw materials in percentage by weight: 1%-3% of graphite phase carbon nitride nanosheets, 5%-20% of modified ardealite powder, 10%-30% of ultrafine lithium slag powder, 5%-10% of nano titanium dioxide, 5%-15% of bauxite, 20%-50% of modified bentonite, 5%-15% of a magnesium oxide expanding agent, 1%-5% of zirconium silicone, 5%-15% of an organosilicon water repellent, 0.5%-2% of high alkali resistant water absorbent resin, and 1%-5% of a polycarboxylic acid water reducer. the waterproof agent provided by the invention not only can improve the pore structure of concrete, improve the compactness of concrete andenhance the impermeability of concrete, but also can reduce the risk of shrinkage cracking of concrete by utilizing the micro-expansion characteristic, and improves the crack resistance of concrete under the synergistic action of the waterproof agent and an alkali-aggregate reaction inhibition component; by utilizing the excitation effect of the nano titanium dioxide on the graphite-phase carbonnitride nanosheet, the nano titanium dioxide shows efficient photocatalytic performance under natural light, can effectively degrade harmful components such as nitric oxide in the air, and plays a positive role in purifying the environment.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an environment-friendly anti-cracking and waterproofing agent for concrete and a preparation method thereof. Background technique [0002] As the main harmful component in the atmosphere, nitrogen oxides are produced in a wide range of ways, such as various industrial furnaces, chemical raw material production, motor vehicles, oxidation reactions of nitrogen-containing organic compounds in fuels, etc. The harm is mainly reflected in the damage to the human respiratory system and the generation of photochemical smog , produce acid rain, and destroy the ozone layer. Studies have shown that photocatalytic technology can effectively degrade nitrogen oxides in the air and improve air quality. As a star material in the field of photocatalysis in this century, graphitic carbon nitride is highly sought after because it can effectively use the visible light part of sunlight, b...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned technical deficiencies, propose an environmentally friendly anti-cracking and waterproofing agent for concrete and its preparation method, and solve the technical problems of poor concrete impermeability and inability to improve the environment in the prior art

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