Low-foam viscosity-reducing type additive compound for high-strength concrete at low water binder ratio

Abstract

The invention provides a low-foam viscosity-reducing type additive compound for high-strength concrete at a low water binder ratio. The low-foam viscosity-reducing type additive compound comprises a component A and a component B, wherein the mass ratio of component A to component B is (1.0-3.0):1; an inorganic mineral lubricating agent is taken as the component A; the component B is prepared from the following raw materials by weight percent: 30-50% of high dispersing agent, 0.02-0.1% of organic lubricating agent, 0.05-0.2% of de-foaming agent, 0.1-0.3% of micro-foam agent, 0.1-0.3% of foam-stabilizing agent, 2.0-5.0% of anti-mud agent and 45-65% of water. The invention also provides a use method for the low-foam viscosity-reducing type additive compound. The invention aims to promote water film thickness and lubricity and promote the synergistic effect of various functions, such as, slurry stability, in the manner of improving the liquidity between the slurry and the aggregate, the viscosity of the high-strength concrete at a low water binder ratio is reduced and the construction property thereof is obviously promoted.

Description

technical field [0001] The invention belongs to the technical field of preparation of functional admixtures, and in particular relates to a low-foaming viscosity-reducing admixture composition for high-strength concrete with a low water-binder ratio and a use method thereof. Background technique [0002] With the progress of the times, the rapid development of society and the comprehensive innovation of technology, concrete buildings have shown new structural forms and systems, and are developing in the direction of large-scale and high-rise buildings. These buildings have higher technical requirements for the mechanical properties and durability of concrete. However, traditional concrete technology can no longer meet the needs of modern social engineering construction. Based on the continuous development of concrete technology and the impact of social economy on concrete engineering The strong demand for technological development, the emergence and application of high- and ...

AI Technical Summary

Problems solved by technology

The commonality of the above-mentioned patent documents is that the viscosity-reducing polycarboxylate water reducer is prepared by a synthetic method, and the viscosity of the concrete is maintained by improving the strong adsorption dispersion and high slump retention of the water reducer. Therefore, only relying on polycarboxylate superplasticizer for viscosity reduction has the problem of single method and function. At the same time, the large bubble structure introduced by polycarboxylate mother liquor is very unfavorable to the mechanical properties and durability of high- and ultra-high-strength concrete.

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