Preservative for concrete admixture and preparation method of preservative

Abstract

The invention relates to a preservative for a concrete admixture and a preparation method of the preservative. Raw materials of the preservative comprise the following components in parts by weight: 10-23 parts of a bactericidal component, 10-20 parts of a bacterium inhibiting component, 5-15 parts of an intermediate active component and 8-13 parts of an anti-precipitation component. The mixing amount of the preservative in the concrete admixture is low; when the preservative is mixed into a water reducer, a slump retaining agent, a wet-mixed mortar additive and the like, layering and precipitation are avoided; the preservative has good compatibility with the concrete admixture and has good anti-corrosion and anti-mildew effects; and growth and reproduction of microorganisms such as saccharomycetes, bacteria and molds can be effectively inhibited. When the pH value of the concrete admixture is 2-7, the preservative has a best sterilization effect. The preservative provided by the invention can be naturally degraded in concrete, and no adverse effect is caused to the environment.

Description

technical field [0001] The invention relates to the technical field of preservatives, in particular to a preservative for concrete admixtures and a preparation method thereof. Background technique [0002] In the process of concrete production and construction, most of the concrete admixtures exist in liquid form, and the mother liquid of water reducing agent and slump retaining agent is stored for a long time and is not easy to deteriorate. However, the concrete structure is very complex, and the mother liquor alone cannot meet the performance requirements of concrete construction. In the process of use, it is necessary to add some small materials, such as sugar, glucose, etc., to improve the concrete state. These small materials are easy to breed mold, yeast, bacteria and other fungi, especially in high temperature and humid environment, the fungi have high reproductive ability. If no preservatives are added, the admixture will deteriorate within three days. This deteriora...

AI Technical Summary

Problems solved by technology

[0003] CN201510397694 discloses a concrete preservative: Aiming at the problem of poor corrosion resistance of sulfate cement used in the prior art and high cost of the protective layer, a concrete preservative is provided. The method uses the buffering effect between acid and alkali, Fills voids and makes concrete stronger

However, this technology cannot solve the problem of mildew due to lack of the problem of inhibiting the growth and reproduction of mold in the admixture

Moreover, although many preservatives currently have a certain bactericidal and antibacterial effect, they will affect the performance of the concrete itself during subsequent use.

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