High-strength admixture for assembly-type prefabricated concrete

Abstract

The invention discloses a high-strength admixture for assembly-type prefabricated concrete. The high-strength admixture for assembly-type prefabricated concrete comprises the following components by weight percentages: 30% to 50% of fine silicon powder, 6% to 14% of desulfurization by-product of coke oven, 20% to 40% of industrial desulfurization by-product gypsum, 6% to 10% of finely ground calcium oxide powder, 3% to 7% of fine magnesium oxide powder, 2% to 6% of a water-soluble silicon active material, 0.5% to 1% of cerium chloride, and 1% to 3% of triisopropanolamine. The admixture has thecharacteristics of improving the early strength of the concrete, reducing the curing time of a prefabricated component, accelerating the mold turnover and compensative shrinkage, and reducing the risk of cracking; the durability of concrete is good, the adhesion between steel and concrete can be significantly increased, and the coordination ability of reinforced concrete in the prefabricated component can be improved, and the high-strength admixture can be widely used in the production and preparation of prefabricated concrete such as prefabricated laminates, prefabricated staircases, prefabricated balconies, prefabricated wall panels, and prefabricated beam columns.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a high-strength admixture for prefabricated concrete. Background technique [0002] In recent years, my country has vigorously promoted the development of construction industrialization, and many places have clearly proposed the proportion of the construction area of ​​prefabricated buildings implemented in the total area of ​​land supply, and the prefabricated component industry has entered a period of rapid development. However, in the process of rapid development, production enterprises have also exposed problems such as extensive management and high energy consumption, which is not conducive to the sustainable development of the assembly industry. In hot summer and cold winter regions, the winter is humid and cold, the average temperature in winter is between (0-10) ℃, the curing temperature is low, and it is difficult to demould within 1 day. In order to increase...

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Problems solved by technology

However, in the process of rapid development, production enterprises have also exposed problems such as extensive management and high energy consumption, which is not conducive to the sustainable development of the assembly industry

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