Anti-freezing concrete and preparation method thereof

Abstract

The invention relates to the field of concrete, and particularly discloses an anti-freezing concrete and a preparation method thereof. The anti-freezing concrete comprises cement, fly ash, fine aggregate, coarse aggregate, a water reducing agent, an anti-freezing agent and water, wherein the anti-freezing agent is prepared from propylene glycol, glycerol, a silane coupling agent and alkyl benzenesulfonate according to a weight ratio of (2.0 to 2.5) to (1.0 to 1.5) to (0.1 to 0.2) to (0.3 to 0.4). The preparation method comprises the following steps: adding the water reducing agent and the anti-freezing agent into water for premixing to obtain an admixture solution; uniformly mixing the fine aggregate and the coarse aggregate to obtain an aggregate mixture; uniformly mixing cement and flyash to obtain a glue mixture; uniformly mixing the glue mixture and the aggregate mixture to obtain a pre-mixture; adding the admixture solution into the pre-mixture, and uniformly stirring to obtainthe anti-freezing concrete. The anti-freezing concrete can be used as building concrete in a low-temperature area and has the advantage of good anti-freezing performance.

Description

technical field [0001] The invention relates to the field of concrete, more specifically, it relates to a frost-resistant concrete and a preparation method thereof. Background technique [0002] Concrete refers to the artificial stone obtained by uniformly mixing, molding and hardening with cement as the main gel material, mixed with water, sand, stones, chemical additives and admixtures. With the expansion of urban areas, a large number of buildings need to be constructed, and concrete, as the most widely used building material in modern times, requires a large amount of preparation and use, and it is necessary to ensure that the concrete can be constructed normally, and it is also required that the concrete has sufficient strength after forming. strength. [0003] However, when concrete is constructed in a low-temperature environment, the free water in the concrete will cool down and transform from liquid to solid. On the one hand, solid free water cannot participate in ...

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Problems solved by technology

[0005] Among them, the calcium formate in the above-mentioned prior art tends to cause cracks in the concrete, so that the compressive strength of the concrete decreases rapidly with the repeated freeze-thaw tests, thereby affecting the durable frost resistance of the concrete

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