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.