Anti-cracking and anti-corrosion concrete and preparation method thereof

Abstract

The invention discloses anti-cracking and anti-corrosion concrete and a preparation method thereof. The anti-cracking and anti-corrosion concrete comprises the following components in parts by weight: 190-200 parts of water, 230-260 parts of Portland cement, 50-65 parts of fly ash, 55-65 parts of mineral powder, 720-830 parts of medium sand, 1000-1130 parts of stone, 6-10 parts of modified polypropylene fibers, 1-1.5 parts of an air-entraining type waterproof agent, 1-1.5 parts of a micro-expansion type waterproof agent, 10-15 parts of diatom ooze, 1.5-2 parts of a sodium sulfite water reducing agent, and 0.75 kg / m of a water absorbing material. The concrete has the beneficial effects that 20%-40% of the starch grafted acrylate water absorbing material is added in the concrete preparation process, and water is supplemented into the concrete through the water absorbing material, so that the relative humidity in the concrete is always kept at a relatively high level, the early cracking of the concrete caused by insufficient maintenance can be effectively relieved, and the problem of maintenance difficulty caused by special climate conditions in different regions can be solved.

Description

technical field [0001] The invention relates to an anti-crack and anti-corrosion concrete and a preparation method thereof, belonging to the technical field of concrete preparation. Background technique [0002] Concrete refers to the artificial stone made of cement as the main cementitious material, mixed with water, sand, stones, chemical admixtures and mineral admixtures when necessary, mixed in an appropriate proportion, uniformly stirred, compacted and cured . Concrete is mainly divided into two stages and states: the plastic state before setting and hardening, that is, fresh concrete or concrete mixture; the hard state after hardening, that is, hardened concrete or concrete. [0003] Traditional concrete mostly adopts the method of watering and covering the external curing method, which generally needs to be implemented after the formwork is removed, which has a negative impact on the appearance and permeability of the concrete surface in the plastic stage. It is only...

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Problems solved by technology

[0003] Traditional concrete mostly uses the method of watering and covering the outside for curing, which generally needs to be implemented after the formwork is removed, which will have a negative impact on the appearance and permeability of the concrete surface in the plastic stage. It is only suitable for solving the problem of water evaporation in hardened concrete, and it is difficult to prevent concrete. Early plastic cracking does not meet the requirements of external maintenance

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