Concrete admixture for roads

Abstract

The invention discloses a concrete admixture for roads. The concrete admixture comprises components in parts by weight as follows: 70-80 parts of mineral waste, 10-15 parts of bentonite, 8-15 parts of silica powder, 8-10 parts of stearic acid, 2-5 parts of methyl cellulose, 4-7 parts of polyacrylamide and 8-15 parts of sodium dodecyl sulfate. The concrete admixture for the roads has a good effect on improving the anti-freezing capability, the anti-permeability capability and the corrosion resisting capability of concrete and prolonging the construction period and further has better water reducing rate and anti-segregation performance.

Description

technical field [0001] The invention relates to a road concrete admixture, which belongs to the field of road traffic engineering. Background technique [0002] In recent years, with the process of urbanization and the continuous acceleration of urban-rural integration, the role of concrete admixtures has become increasingly important. As we all know, cement concrete is one of the largest building materials today, and concrete is everywhere in our lives. Whether it is roads, bridges, buildings, ports, docks, dams, airports, or Antarctic research stations and ocean drilling platforms, people can touch it all the time, and scientists are still studying the use of cement concrete materials for the outer layer space. With the development of science and technology, people have higher and higher requirements for engineering technology, engineering quality and service life of buildings. The use of concrete admixtures is one of the best, most effective and easiest ways to improve...

AI Technical Summary

Problems solved by technology

However, the selection and addition methods of concrete admixtures will seriously affect the engineering quality of concrete.

[0004] At present, there are many kinds of concrete admixtures available in the market, and there are some defects in actual use: First, although the water-reducing effect is good, the bleeding rate increases, which affects its quality uniformity; second, it has poor adaptability to cement varieties , It is easy to cause the problem of early setting of concrete, which affects the normal construction of the project. How to improve the fluidity of concrete without increasing the bleeding rate, and adapt to the processing of different cement varieties without causing early setting of concrete Commercial concrete is to solve a special problem in the modern construction of commercial concrete

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