A kind of ready-mixed mortar opening time regulator and preparation method thereof

Abstract

The invention provides a pre-mixed mortar opening time regulator and a preparation method thereof. The regulator is prepared from the following raw material components in parts by weight: 150-400 parts of organic phosphonic acid or organic phosphonate, 150-300 parts of a stabilizer raw material, 100-200 parts of magnesium salt and the balance of water; the sum of the weight parts of the stabilizer raw material, the magnesium salt, the water and the organic phosphonic acid or organic phosphonate is 1,000 parts. The preparation method comprises the following process steps: adding polyethyleneimine and hydroxy carboxylic acid (or hydroxy carboxylate) in a reaction kettle, mixing the polyethyleneimine and the hydroxy carboxylic acid (or hydroxy carboxylate), adding part of water, stirring until the mixture is dissolved completely, and preparing a stabilizer; adding the organic phosphonic acid or organic phosphonate and the magnesium salt in the stabilizer in the reaction kettle, mixing the organic phosphonic acid or organic phosphonate, the magnesium salt and the stabilizer, evenly stirring, supplementing the rest water, stirring and dissolving to obtain the final product. The opening time regulating performance is good, the opening time of mortar is adjusted optionally within 6-70 hours, time of coagulation is adjusted within 10-100 hours, and later strength development is seldom affected.

Description

technical field [0001] The invention relates to an open time regulator for ready-mixed mortar used in building construction, and belongs to the technical field of building materials. The invention also relates to a preparation method of the open time regulator of ready-mixed mortar. Background technique [0002] Construction mortar is a building material that is used in large quantities and widely used in construction engineering. It is mainly used for masonry of masonry structures and plastering of internal and external surfaces of buildings. During the application of ordinary building mortar in masonry and stucco construction, secondary pollution of raw material dust, noise of on-site mixing, and a large amount of powder being washed into urban sewage pipes during the rainy season have occurred. The use of ready-mixed mortar can not only effectively protect the environment, reduce the discharge of solid waste, but also realize the recycling of resources. Specifically, re...

AI Technical Summary

Problems solved by technology

[0005] The above technologies have not given specific guidance on how to make the open time regulator of ready-mixed mortar have good opening time adjustment performance and be compatible with various water reducing agents