A high-efficiency concrete performance enhancing additive and its preparation method

Abstract

The invention relates to an efficient concrete performance enhancement additive. The additive is characterized by containing the following components in parts by mass: 10-15 parts of a coupling agent, 4-6 parts of zinc oxide powder, 4-5 parts of activated carbon, 20-25 parts of white carbon black and 30-40 parts of polyester fiber. The additive is prepared by the steps of mixing weighed titanic acid phosphate ester, zinc oxide powder, activated carbon and white carbon black powder into a stirring machine, mixing, distributing to packaging bags according to the weight, and weighing and feeding required polyester fiber into packaged powder bags, so as to obtain a finished product. According to the efficient concrete performance enhancement additive, the impaction resistance, wear resistance, durability, splitting tension strength, axial tension strength and bending strength of concrete are greatly enhanced, the adiabatic temperature rise is decreased, the cracking resistance and the permeability resistance are improved, and the waterproof protecting period of the concrete to a building is greatly prolonged.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a performance-enhancing additive for concrete that improves impact resistance, wear resistance, durability, splitting, axial tension, bending strength, reduces adiabatic temperature rise, prevents cracking and seepage, and a preparation method thereof . Background technique [0002] Concrete usually refers to the use of cement as the cementitious material, sand and stone as the aggregate, mixed with water in a certain proportion, and obtained by mixing. It has the characteristics of rich raw materials, low price and simple production process, which makes it widely used, especially suitable for nuclear power, water conservancy and hydropower, subways, high-speed rails, roads, bridges, tunnels and other projects. Due to the characteristics of its own structure, concrete materials often suffer from poor self-tightness, splitting, axial tension, poor flexural ...

AI Technical Summary

Problems solved by technology

Due to the characteristics of its own structure, concrete materials often suffer from poor self-tightness, splitting, axial tension, poor flexural strength, cracking and leakage during use, especially for those underground and underwater structural projects, which seriously affect and restrict the application of concrete materials

[0003] Therefore, various additives related to improving and improving the anti-cracking, anti-seepage, etc. of concrete materials and other concrete properties have been continuously proposed, such as some early additives such as wood calcium and magnesium oxide that can improve the anti-cracking and anti-seepage ability of concrete by generating expansion. In addition, there are some organic types, such as silicone, aliphatic, etc.; but these additives have limited water resistance and cannot last

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