Viscosity adjusting admixture for spray construction and preparation method thereof

A technology of viscosity adjustment and admixture, which is applied in the field of concrete spraying construction, can solve the problems of low strength and construction efficiency, high rebound rate, etc., and achieve the effect of improving construction efficiency, increasing strength and reducing elastic collision

Active Publication Date: 2019-11-15
JIANGSU SOBUTE NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of high rebound rate, low strength and low construction efficiency in mortar and concrete spraying construction, the invention provides a viscosity-adjusting admixture for spraying construction and its preparation method

Method used

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  • Viscosity adjusting admixture for spray construction and preparation method thereof
  • Viscosity adjusting admixture for spray construction and preparation method thereof
  • Viscosity adjusting admixture for spray construction and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A viscosity-adjusting admixture for spraying construction, which is prepared by mixing the following components in parts by weight:

[0027]

[0028] Among them, the ultrafine powder is 600 mesh ultrafine limestone powder. The rheology modifier is a mixture of hydroxypropyl starch ether and acidified modified sodium bentonite with a mass ratio of 1:1; the aggregate wrapping agent is magnesium aluminum silicate nanogel; the air-entraining agent is sodium lauryl sulfate; The strengthening component is a mixture of sodium sulfate and calcium formate in a weight ratio of 1:1; the coagulation adjusting component is sodium sugar.

Embodiment 2

[0030] A viscosity-adjusting admixture for spraying construction, which is prepared by mixing the following components in parts by weight:

[0031]

[0032] Among them, the ultrafine powder is 800 mesh ultrafine limestone powder. The rheology modifier is a mixture of hydroxypropyl starch ether and acidified modified sodium bentonite with a mass ratio of 1:2; the aggregate wrapping agent is magnesium aluminum silicate nanogel; the air-entraining agent is triterpene saponin air-entraining agent; The strengthening component is a mixture of aluminum sulfate and calcium formate in a weight ratio of 1:2; the coagulation adjusting component is sodium sugar.

Embodiment 3

[0034] A viscosity-adjusting admixture for spraying construction, which is prepared by mixing the following components in parts by weight:

[0035]

[0036]

[0037] Among them, the ultrafine powder is 800 mesh ultrafine limestone powder; the rheology modifier is a mixture of hydroxypropyl starch ether and acidified modified sodium bentonite with a mass ratio of 1:2; the aggregate wrapping agent is magnesium aluminum silicate nano Gel; the air-entraining agent is sodium lauryl sulfate; the reinforcing component is a mixture of sodium sulfate and calcium formate in a weight ratio of 1:1; the coagulation adjusting component is glucose.

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Abstract

The invention discloses a viscosity adjusting admixture for spray construction and a preparation method thereof. The viscosity adjusting admixture is composed of following components in parts by weight: 60 to 90 parts of ultrafine powder, 5 to 10 parts of a rheology modifier, 5 to 10 parts of an aggregate wrapping agent; 0.5 to 1 part of an air entraining agent; 1 to 10 parts of a reinforcing component; and 1 to 10 parts of a setting control component; wherein the ultrafine powder is ultrafine limestone flour with a size of 600 to 1000 meshes, and the aggregate wrapping agent is a nano aggregate wrapping agent. The provided viscosity adjusting admixture can reduce the rebound rate, improves the construction efficiency, enhances the strength of all stages, and obviously improves the qualityof construction engineering that uses motor spraying and concrete spraying. The admixture can be used to adjust the viscosity of a spraying material. The pipe obstruction is inhibited. The construction efficiency is improved. The rebound rate of spraying construction, the strength of materials of all stages, and the bonding strength are all improved.

Description

technical field [0001] The invention relates to the field of concrete spraying construction, in particular to a viscosity-adjusting admixture for spraying construction and a preparation method thereof. Background technique [0002] In recent years, with the continuous development and innovation of concrete science, shotcrete and shotcrete technology have been widely used in the construction industry. Concrete spraying technology has been successfully applied to the support of metallurgy, coal, water conservancy and various tunnel projects. Compared with cast-in-place concrete, spraying construction is simple and easy, eliminating the need for formwork, pouring and formwork removal processes, and combining concrete conveying, pouring and tamping into one process, saving manpower and shortening the construction period. The hose is constructed in a thin-walled structure in a high room or a narrow working area. The use of mechanized jetting construction technology to replace t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/38
CPCC04B40/0039C04B14/28C04B14/104C04B24/38C04B22/00C04B22/147C04B24/04C04B24/10C04B24/16
Inventor 徐海源沙建芳郭飞刘建忠吴洲刘加平
Owner JIANGSU SOBUTE NEW MATERIALS
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