Preparation process of high-strength concrete

Abstract

The invention discloses a preparation process of high-strength concrete. The process comprises the following steps of: taking out materials, sequentially adding 15-25 parts of quick lime, 10-25 partsof 425# cement, 7-12 parts of fine sand, 15-20 parts of coarse sand and 6-18 parts of stones into a stirring cavity of a stirrer, performing mixing and stirring to obtain a mixture for later use, andadding clear water into the stirrer after mixing, stirring the mixture for 2-4min again by the stirrer, adding 10-15 parts of a concrete air entraining agent into the stirrer, and continuously stirring the mixture for 2-4min; when the concrete is prepared, adding a concrete anti-freezing agent into the concrete, and fully mixing the concrete anti-freezing agent and the concrete. The prepared concrete is high in density, the phenomenon that the concrete cracks in cold weather is avoided, a concrete corrosion inhibitor is added into the concrete, and the impermeability of the prepared concrete is greatly improved; therefore, the contact area between the steel bars in the concrete and water is reduced, and the strength of the concrete is improved.

Description

technical field [0001] The invention relates to the technical field of concrete preparation, in particular to a high-strength concrete preparation process. Background technique [0002] Concrete refers to a mixture made of cementitious materials, granular aggregates, water, chemical admixtures and mineral admixtures that need to be added in an appropriate proportion, or a composite material with a stacked structure after hardening (common It is based on cementitious materials, water, fine aggregate, coarse aggregate, and when necessary, admixtures and mineral admixtures are mixed in an appropriate proportion. Concrete is one of the most important civil engineering materials in the contemporary era. Concrete is rich in raw materials. The characteristics of low price and simple production process make it more and more used. At the same time, concrete also has the characteristics of high compressive strength, good durability, and wide range of strength grades. These characteris...

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Problems solved by technology

[0003] 1. When the concrete is prepared, no materials that can enhance the antifreeze ability of the concrete are added. In cold weather, many microcracks will occur inside the concrete, and even cause the concrete to break, which greatly reduces the strength of the concrete;

[0004] 2. If steel bars are poured inside the concrete, when the concrete is washed by rain or water, the steel bars inside the concrete are prone to corrosion and the strength of the concrete will be reduced. Therefore, a high-strength concrete preparation process is proposed

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