Formula and preparation process of anti-crack concrete

Abstract

The invention belongs to the technical field of concrete production, and particularly relates to an anti-crack concrete formula and a preparation process, S1, fly ash, mineral powder, quartz sand, cement and water are put into a stirring barrel in proportion, a motor is started to drive stirring blades to stir through a first rotating shaft, the stirring temperature is 30-35 DEG C, and the stirring time is 45-60 min; s2, placing a material spraying device in a stirring barrel, connecting the material spraying device with the stirring barrel through a connecting piece, proportionally adding aluminum ore powder, glass fibers, boric acid and magnesium oxide into the material spraying device from a feeding hole, starting a motor to drive a material spraying box to rotate through the connecting piece, and stirring uniformly; the materials in the material spraying box are sprayed through the discharging holes, the stirring temperature ranges from 30 DEG C to 35 DEG C, and the stirring time ranges from 20 min to 30 min; the problems that in concrete engineering use, the cracking rate of concrete solidification is high, external harmful substances easily invade into concrete, the durability of the concrete is reduced, and the service life of the concrete is prolonged are solved.

Description

technical field [0001] The invention belongs to the technical field of concrete production, in particular to a crack-resistant concrete formulation and a preparation process. Background technique [0002] Concrete is one of the most important civil engineering materials in contemporary times. It is widely used because of its abundant raw materials, low price and simple production process. [0003] A Chinese patent with publication number CN104058674B discloses a concrete comprising the following raw materials: cement, sand, crushed stone, waste calcined material, admixture and water, and the waste calcined material is prepared by the following method: Concrete and waste bricks are mixed in a mass ratio of 10:3, crushed and ground into crushed powder less than 30mm, for use; put the crushed powder into water, soak it for 2-3 days, and then take it out for drying; put the dried crushed powder in 1000-1100 DEG C of lower calcinations for 4-5h, after cooling, grinding and sievi...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, in the use of concrete engineering, the cracking rate of concrete solidification is high, which will make the concrete vulnerable to the invasion of external harmful substances into the interior of the concrete, and will reduce the durability and service life of the concrete;

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