A kind of antifreeze type water reducer and its preparation process

Abstract

The invention relates to an antifreezing water reducing agent and a preparation technique thereof. The antifreezing water reducing agent is composed of a main material and an antifreezing agent which accounts for 10 wt% of the main material. The main material is composed of the following components in parts by mass: 100-120 parts of aliphatic water reducing agent, 150-180 parts of sodium metaphosphate and 10-20 parts of early-strength admixture. The antifreezing agent is composed of the following components in parts by weight: 0.5-1.5 parts of air entraining agent, 3-8 parts of calcium magnesium acetate, 1-8 parts of sodium 2-mercaptoethane sulfonate, 2-5 parts of tetrapolyethyleneglycol monooctyl ether, 10-15 parts of nano diatomite and 5-10 parts of rigid fiber. By adding the antifreezing agent and pine wood extract, the antifreezing water reducing agent has the advantages of favorable water-reducing effect, higher slump0retaining strength, bleeding prevention, favorable antifreezing effect and strong slow-release effect, increases the strength of concrete and saves the enterprise cost.

Description

technical field [0001] The invention relates to the technical field of organic compound synthesis, in particular to an antifreeze type water reducer and a preparation process thereof. Background technique [0002] Concrete is an important material in the construction industry, but during construction in winter, it is easy to crack due to the influence of temperature. In order to increase the strength of concrete under reheating conditions, most projects adopt the addition of water reducing agent to concrete Antifreeze to achieve antifreeze effect. The water-reducing component used in traditional antifreeze has poor water-reducing effect, the concrete slump loss is fast, and the inter-molecular gap is small, which has a certain impact on the durability of concrete. All antifreeze agents cause uneven distribution of component bubbles, which will loosen the internal structure of some concrete and reduce durability. The dispersion of the water reducing agent is not good, the wa...

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Problems solved by technology

The water-reducing component used in traditional antifreeze has poor water-reducing effect, the concrete slump loss is fast, and the gap between molecules is small, which has a certain impact on the durability of concrete. All antifreeze agents cause uneven distribution of component bubbles, which will loosen the internal structure of some concrete and reduce durability. The dispersion of the water reducing agent is not good, the water reducing effect is greatly reduced, the fluidity is poor, and it is easy to bleed, which seriously affects the construction project. the quality of

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