Frost-resistant high-performance concrete and preparation method thereof

Abstract

The invention discloses frost-resistant high-performance concrete and a preparation method thereof, which relates to the technical field of concrete. The frost-resistant high-performance concrete is prepared from the following components in parts by weight: 400 to 450 parts of cement; 80 to 100 parts of fly ash; 700 to 750 parts of yellow sand; 850 to 1000 parts of broken stone; 90 to 100 parts ofmineral powder; 4-8 parts of a water reducing agent; 5-10 parts of a retarder; 130 to 170 parts of water; 5 to 10 parts of chitin; 30 to 50 parts of basalt fiber; and 1-2 parts of sodium abietate. The anti-freezing high-performance concrete is prepared by the following steps: S1, adding cement, fly ash, yellow sand, broken stone, mineral powder and basalt fiber in corresponding parts by weight into a stirrer, and uniformly stirring and mixing to obtain a mixture; S2, adding a retarder, a water reducing agent, chitin and sodium abietate into water, and uniformly mixing to obtain a mixed solution; and S3, adding the mixed solution into the mixture, and uniformly stirring to obtain the frost-resistant high-performance concrete. The concrete prepared by the invention has the advantages of good frost resistance and high structural strength.

Description

technical field [0001] The invention relates to the technical field of concrete, more specifically, it relates to a frost-resistant high-performance concrete and a preparation method thereof. Background technique [0002] Concrete refers to the cement concrete obtained by using cement as the cementitious material, sand and stone as the aggregate, mixed with water, admixtures and admixtures in a certain proportion, and is also called ordinary concrete. It is widely used in civil engineering . [0003] A kind of frost-resistant concrete brick and its preparation method are disclosed in the Chinese invention application patent whose publication number is CN107840603A, and the preparation method comprises: 1) silica gel, sodium lauryl sulfate, sodium nitrite calcium, calcium chloride, Carry out the first hydrothermal reaction with calcium nitrate, sodium chloride and water, filter and take the filter cake to make the first hydrothermal product; 2) carry out the first hydrotherm...

AI Technical Summary

Problems solved by technology

However, the introduction of Na and Ca ions will not only lead to corrosion of steel bars, but also cause large expansion of concrete, affecting other properties of concrete such as strength.

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