Synergistic binder-reducing concrete admixture and preparation method thereof

Abstract

The invention relates to the technical field of binder-reducing concrete admixtures, and discloses a synergistic binder-reducing concrete admixture and a preparation method thereof. The synergistic binder-reducing concrete admixture comprises a polycarboxylic acid water reducer, a polycarboxylic acid slump retaining agent, a binder reducing agent, an air entraining agent, a defoaming agent, a water-retaining agent, a retarder, a pH regulator and water. The invention further provides the preparation method of the synergistic binder-reducing concrete admixture. The synergistic binder-reducing concrete has the double effects of reducing a binder and reducing water, and can play a role in dispersing a binding material in concrete to the greatest extent, so the binding material which only plays a filling role originally is fully hydrated, and the strength and the working performance of the concrete are improved; the problem that an admixture storage tank and a binder reducing agent storage tank need to be prepared at the same time in a mixing plant is solved, the problem that the quality of the mixing plant fluctuates due to inaccurate weighing of the binder reducing agent is solved, the mixing plant can well adapt to changes of various materials, and concrete quality fluctuation caused by the changes is avoided.

Description

technical field

[0001] The invention relates to the technical field of gel-reducing concrete admixtures, in particular to a synergistic gel-reducing concrete admixture and a preparation method thereof. Background technique

[0002] Due to the acceleration of construction in our country and the over-harvesting of river sand, the country has regulated the mining of river sand, resulting in the existence of various sand and gravel aggregates of different qualities on the market, which has brought great difficulties to the quality control of concrete. At present, some manufacturers propose to use concrete reducer to solve the problems caused by material instability, and have achieved certain results. Adhesive reducers have been widely used in major commercial mixing stations. Adhesive reducers can save cementitious materials, ensure concrete strength, and improve concrete workability. However, the glue reducer on the market must be used together with the water reducer. Some mix...

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