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A kind of viscosity adjusting admixture for spraying construction and preparation method thereof

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

Active Publication Date: 2021-10-01
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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  • A kind of viscosity adjusting admixture for spraying construction and preparation method thereof
  • A kind of viscosity adjusting admixture for spraying construction and preparation method thereof
  • A kind of viscosity adjusting admixture for spraying construction and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] A viscosity-adjusting admixture for spray construction is prepared by mixing the following components 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 in a mass ratio of 1:1; the aggregate encapsulating 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 spray construction is prepared by mixing the following components 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 in a mass ratio of 1:2; the aggregate encapsulating agent is magnesium aluminum silicate nanogel; the air-entraining agent is a triterpenoid 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 spray construction is prepared by mixing the following components 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 encapsulating agent is magnesium aluminum silicate nanometer 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 spraying construction and a preparation method thereof. The viscosity-adjusting admixture for spraying construction of the present invention is composed of the following ingredients calculated by weight: 60-90 parts of ultrafine powder, 5-10 parts of rheology modifier, 5-10 parts of aggregate wrapping agent, 0.5-1 part of air-entraining agent, 1-10 parts of reinforcing component and 1-10 parts of coagulation-adjusting component; the ultrafine powder is 600-1000 mesh ultrafine limestone powder; the aggregate coating agent is nano-bone Material wrapping agent. The viscosity-adjusting admixture of the invention can reduce the rebound rate, improve the construction efficiency, and has the effect of increasing the strength of each age, and can significantly improve the overall quality of the sprayed mortar and sprayed concrete construction projects. The admixture is mainly used to adjust the viscosity of sprayed materials, and has the functions of reducing pumping pipe plugging, improving construction efficiency, improving resilience in spraying construction, and increasing the compressive strength and bonding strength of materials at various ages.

Description

technical field [0001] The invention relates to the field of concrete spray construction, in particular to a viscosity-adjusting admixture for spray 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, spray construction is simple and easy to implement, eliminating the need for formwork, pouring and formwork removal, so that concrete conveying, pouring and tamping are combined into one process, saving manpower and shortening the construction period. The hose is used for thin-walled construction in high rooms or narrow working areas. Using mechanized spray construction technology to replace traditional ma...

Claims

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Application Information

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Patent Type & Authority Patents(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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