Concrete viscosity reducer

Abstract

The invention discloses a concrete viscosity reducer. The concrete viscosity reducer is prepared from components in parts by weight as follows: 15-22 parts of methacrylamide, 3-8 parts of sodium thiosulfate, 1-5 parts of a stabilizer, 2-3 parts of a retarder, 4-8 parts of maleic anhydride, 0.5-1 part of sodium dodecyl benzene sulfonate, 5-8 parts of bentonite and 10-12 parts of water. The concreteviscosity reducer has low admixing amount, good compatibility and stability.

Description

Technical field [0001] The invention relates to a viscosity reducer, in particular to a concrete viscosity reducer. Background technique [0002] In recent years, with the development of large-scale and high-rise building structures in my country, the requirements for concrete strength have become higher and higher. In order to increase the strength of concrete, high-strength cement is generally used, the amount of cementing material is increased, and the water-binder ratio is reduced. However, these measures often lead to an increase in concrete viscosity and a slower flow rate, which is not conducive to pumping and construction. In addition, due to the lack of river sand resources, a large amount of machine-made sand is also used in the preparation of the above-mentioned concrete. The machine-made sand has many edges and corners and poor gradation, which makes the viscosity problem more prominent. Summary of the invention [0003] In view of the above-mentioned problems, the pr...

AI Technical Summary

Problems solved by technology

In order to increase the strength of concrete, high-strength cement is generally used, the amount of cementitious materials is increased, and the water-binder ratio is reduced, but these measures often lead to increased concrete viscosity and slower flow rate, which is not conducive to pumping and construction

In addition, due to the shortage of river sand resources, a large amount of machine-made sand is also used in the preparation of the above-mentioned concrete. The machine-made sand has many edges and corners and poor gradation, which makes the viscosity problem more prominent