Wet-mixed mortar additive

Abstract

The invention provides a wet-mixed mortar additive. The additive has low cost, can be added in an autoweighing manner, is used for wet-mixed mortar, and has good water-retaining property and delamination degree of mortar, less loss in the range of open time, high adhesive strength, and good construction workability. The wet-mixed mortar additive includes: by mass, sodium polyacrylate 5%-15%, air entraining agent 5%-15%, cellulose ethers thickening water-retaining agent 10%-20%, sodium alginate 5%-10%, polyoxyethylene 3%-10%, retarder 5%-20%, xanthan gum 3%-8%, and the balance maltodextrin, wherein the molecular weight of sodium polyacrylate is more than 30 million, and the molecular weight of polyoxyethylene is more than 2.5 million. The wet-mixed mortar additive is powder, and the mixing amount is 0.05%-0.10% of mortar gel material using amount. The wet-mixed mortar additive can be dissolved in water, and can be diluted to a liquid with concentration of 1.5%-2.0% at mixing plant site to be added in an autoweighing manner.

Description

technical field [0001] The invention relates to a wet-mixed mortar admixture, which belongs to the field of building mortar materials. Background technique [0002] Construction mortar includes masonry mortar and plastering mortar. According to the production method of mortar, ready-mixed mortar can be divided into two categories: wet-mixed mortar and dry-mixed mortar. Among them, the wet-mixed mortar is composed of cement, mineral admixture, fine aggregate, admixture, water and various components determined according to the construction performance. According to the different grades of the mortar, according to a certain proportion, it is measured and mixed in the mixing station. Finally, it is transported to the place of use by a mixer truck, stored in a special container pool, and the mixture is used within the specified time. [0003] Construction requirements The most important technical characteristics of wet-mix mortar are good water retention, high adhesion and good ...

AI Technical Summary

Problems solved by technology

Many known wet-mixed mortar admixtures have high cost, large loss of mortar layering within the open

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