Anti-freezing cracking concrete and preparation method thereof

Abstract

The invention relates to the field of concrete, and particularly discloses anti-freezing cracking concrete and a preparation method. The concrete comprises polyoxyethylene sorbitan monostearate, sodium di-sec-octyl maleate sulfonate, coarse aggregate, fine aggregate, cement and water. The preparation method of the concrete comprises the following steps: 1) adding the polyoxyethylene sorbitan monostearate and the sodium di-sec-octyl maleate sulfonate into water, and heating to 75-80 DEG C to obtain a first mixture; and 2) adding the first mixture, the cement and the fine aggregate into the coarse aggregate, and uniformly mixing to obtain the anti-freezing cracking concrete. The anti-freezing cracking concrete provided by the invention can improve the freezing resistance and impermeability of the concrete, and the preparation method provided by the invention can improve the workability of a concrete mixture.

Description

technical field [0001] The application relates to the field of concrete, more specifically, it relates to a frost-resistant cracking concrete and a preparation method thereof. Background technique [0002] Concrete is one of the most important civil engineering materials today. It is a kind of artificial stone made of cementitious materials, granular aggregates, water, and admixtures and admixtures added when necessary, prepared in a certain proportion, uniformly stirred, densely formed, cured and hardened. Concrete has the characteristics of rich raw materials, low price and simple production process, so its consumption is increasing. [0003] In the cold regions of northern my country, most of the damage of concrete is related to the freeze-thaw action. The damage of concrete structures under the action of freeze-thaw cycles is related to the service life of buildings, engineering quality, and operational safety. [0004] When the water in the pores or cracks of the conc...

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Problems solved by technology

[0005] In view of the above-mentioned related technologies, the inventor believes that when the freeze-thaw phenomenon occurs, the strength of the concrete against expansion is low, the internal cracks gradually deepen, the cracking speed is accelerated, and water is more likely to penetrate into the interior of the concrete, resulting in a decrease in the frost resistance of the concrete. Poor, affecting the safety of concrete buildings

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