Wet-mixed mortar additive capable of enhancing early strength of mortar

Abstract

The invention discloses a wet-mixed mortar additive capable of enhancing the early strength of mortar. The wet-mixed mortar additive comprises materials A and materials B. The materials A comprise 10%-40% of multifunctional water-retaining agents, 1%-3% of shrinkage reducing agents, 0.1%-0.5% of welan gum and the balance water. The materials B comprise 10%-30% of carbohydrate retarders, 10%-30% of organic phosphorus retarders, 1%-5% of air entraining agents and the balance water. The carbohydrate retarders are one type of or a plurality of types of sodium gluconate, sucrose and citric acid; the organic phosphorus retarders are one type of or a plurality of types of etidronic acid, amino trimethylene phosphonic acid, 2-phosphonic acid butane-1 and 2, 4-tricarboxylic acid; the air entraining agents are one type of or a plurality of types of AE-200 type polyether concrete high-performance air entraining agents, ethoxylated lauryl alcohol sulfates, alpha-sodium olefinsulfonate, triterpenoid saponin and rosin pyrolytic polymers. The wet-mixed mortar additive has the advantages that the operable time of the wet-mixed mortar can be effectively prolonged, the early strength of the mortar can be quickly improved, and the construction progress can be effectively improved.

Description

technical field [0001] The invention relates to a wet-mixed mortar admixture for building construction, in particular to a wet-mixed mortar admixture capable of improving the early strength of mortar, and belongs to the technical field of building materials. Background technique [0002] Wet-mixed mortar refers to the reasonable preparation of various raw materials (including water), and after factory production, it is transported to the construction site by means of transportation (usually closed tank trucks). It has the following advantages: (1) It can be used directly after being transported to the construction site without processing. (2) It is prepared in a professional production plant, which is conducive to the control and guarantee of the quality of the mortar. (3) The choice of raw materials is large, the aggregate can be dry material or wet material, and does not need to be dried, so the cost can be reduced; a large amount of industrial waste such as fly ash can b...

AI Technical Summary

Problems solved by technology

[0006] The above technologies have not given specific guidance on how to make the admixture effectively prolong the operable time of the wet-mixed mortar, and improve the early strength of the mortar faster, thereby effectively improving the construction progress.

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