Preparation method of concrete forming curing agent

Abstract

The invention discloses a preparation method of a concrete forming curing agent, the preparation method comprises the following steps: preparing modified powder by using a grinding device, and uniformly stirring the modified powder, polyethylene glycol, vinyl trimethoxy silane, sodium silicate, hydroxymethyl cellulose, aluminum chloride and water to obtain the concrete forming curing agent. The concrete forming curing agent can quickly form a covering film on the surface of concrete to prevent water evaporation of the concrete so that sufficient hydration is ensured, the autotrophication purpose is achieved, and the modified powder in the concrete forming curing agent increases the impermeability of the concrete and effectively prevents the saltpetering phenomenon; the superfine powder prepared by the grinding device is more easily acidified by concentrated sulfuric acid, the acidification effect is good, the dispersing performance and the adsorption performance of the modified powder are further improved, and the prepared concrete forming curing agent is good in curing effect.

Description

technical field [0001] The invention relates to the field of concrete, in particular to a preparation method of a concrete forming curing agent. Background technique [0002] In recent years, concrete curing is an important link in concrete construction and has gradually attracted people's attention. After the concrete is poured, it must be cured during the initial setting process, that is, to maintain the necessary humidity and temperature so that it has enough water to ensure the hydration reaction; proper curing can greatly improve the durability, strength, and durability of the concrete. Abrasiveness, volume stability and other properties. The traditional maintenance methods include grass bag maintenance, plastic film maintenance and watering maintenance. These methods are time-consuming, labor-intensive and seriously waste water resources. [0003] The method of using curing agent to cure concrete has a long history, but its curing effect cannot meet the actual needs....

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the above-mentioned technical problems, the object of the present invention is to provide a preparation method of concrete forming curing agent: by putting sepiolite, silicon dioxide and titanium dioxide into the feeding hopper of the grinding device, the active The pulley and the driven pulley are connected, the driving sprocket and the driven sprocket are connected by installing the chain, the grinding motor is started, and the grinding motor runs through the driving pulley and the driven pulley to drive the linkage shaft to rotate, and through the installation plate to drive A number of rolling grinding wheels roll on the inner wall of the grinding chamber, start the conveying motor, and the conveying motor runs through the driving sprocket and driven sprocket to drive the threaded conveying rod to rotate, and the rotating threaded conveying rod will transport sepiolite, silicon dioxide and Titanium dioxide is transported from the feed port to the inner cavity of the grinding chamber, and several continuously rolling grinding wheels grind the sepiolite, silicon dioxide and titanium dioxide into powder to obtain a mixed powder, start the induced draft fan, and the induced draft fan runs Negative pressure is generated, and the mixed powder is sucked out from the discharge pipe into the conveying pipeline. When part of the mixed powder moves upward in the conveying pipeline, it will fall under the influence of gravity and be discharged from the discharge port into the inner cavity of the coarse material collection box. The mixed powder is output from the conveying pipeline, and is transported tangentially to the inner cavity of the cyclone separation chamber through the feed pipe, and the mixed powder forms an external swirl flow and is discharged into the fine material collection box to obtain ultrafine powder. Take out the superfine powder from the material collection box, mix and soak it with concentrated sulfuric acid, filter, wash the filter cake, and obtain the modified powder after drying, and then mix the modified powder, polyethylene glycol, vinyltrimethoxysilane , sodium silicate, hydroxymethyl cellulose, aluminum chloride and water are evenly stirred to obtain a latex-like curing agent, which solves the problem of poor surface binding force of existing curing agents, which leads to unsatisfactory water retention effect and poor product performance. It is difficult to meet the requirements of practical application, and the existing concrete has poor impermeability and is prone to the problem of efflorescence

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