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Preparation method for high-strength water-resistant rock-soil repairing material used for ancient buildings

A repairing material and technology for ancient buildings, which is applied in the field of preparation of high-strength water-resistant rock and soil ancient building repairing materials, can solve problems such as poor water resistance, and achieve the effects of improving mechanical properties, good gloss and color retention, and good storage stability

Pending Publication Date: 2019-11-12
涂民强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Technical problem to be solved by the present invention: Aiming at the problem of poor water resistance of existing cement repair materials, a preparation method of high-strength water-resistant rock and soil ancient building repair materials is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] In parts by weight, weigh 10 parts of carboxymethyl styrene-butadiene latex, 20 parts of natural hydraulic lime, 5 parts of methyl methacrylate, 10 parts of acrylic acid, 1 part of butyl acrylate, 1 part of ammonium persulfate, 40 parts of Mix carboxymethyl styrene-butadiene latex with deionized water, stir for 10 minutes at a temperature of 60°C and a stirring speed of 200r / min to obtain reaction solution A, add natural hydraulic lime to the reaction solution, Continue to stir for 5 minutes to obtain the reaction solution B. Add ammonium persulfate to the reaction solution B. After stirring for 5 minutes at a stirring speed of 400 r / min, add methyl methacrylate, acrylic acid and butyl acrylate, and continue stirring for 6 hours. Obtain base body liquid, be that the pH value of 25% ammonia water adjustment base body liquid is 7 with mass fraction, obtain modified natural hydraulic lime; Mix dicumyl peroxide, maleic anhydride and acetone by mass ratio 1: 10: 20 Mix evenl...

Embodiment 2

[0033] In parts by weight, weigh 12 parts of carboxymethyl styrene-butadiene latex, 30 parts of natural hydraulic lime, 8 parts of methyl methacrylate, 12 parts of acrylic acid, 5 parts of butyl acrylate, 2 parts of ammonium persulfate, 45 parts Mix the carboxymethyl styrene-butadiene latex and deionized water, and stir for 15 minutes at a temperature of 65° C. and a stirring speed of 250 r / min to obtain the reaction solution A. Add natural hydraulic lime to the reaction solution, Continue to stir for 8 minutes to obtain the reaction solution B. Add ammonium persulfate to the reaction solution B. After stirring for 8 minutes at a stirring speed of 450 r / min, add methyl methacrylate, acrylic acid and butyl acrylate, and continue stirring for 7 hours. Obtain base body liquid, be that the pH value of 25% ammonia water adjustment base body liquid is 7 with mass fraction, obtain modified natural hydraulic lime; Mix dicumyl peroxide, maleic anhydride and acetone by mass ratio 1: 10: ...

Embodiment 3

[0035] In parts by weight, 15 parts of carboxymethyl styrene-butadiene latex, 40 parts of natural hydraulic lime, 10 parts of methyl methacrylate, 15 parts of acrylic acid, 10 parts of butyl acrylate, 3 parts of ammonium persulfate, 50 parts Mix carboxymethyl styrene-butadiene latex and deionized water with a temperature of 70°C and a stirring speed of 300r / min for 20min to obtain reaction solution A. Add natural hydraulic lime to the reaction solution, Continue to stir for 10 minutes to obtain the reaction solution B. Add ammonium persulfate to the reaction solution B. After stirring for 10 minutes at a stirring speed of 500 r / min, add methyl methacrylate, acrylic acid and butyl acrylate, and continue stirring for 8 hours. Obtain base body liquid, be that the pH value of 25% ammonia water adjustment base body liquid is 8 with mass fraction, promptly obtain modified natural hydraulic lime; Mix dicumyl peroxide, maleic anhydride and acetone by mass ratio 1: 10: 20 Mix evenly to...

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Abstract

The invention relates to a preparation method for a high-strength water-resistant rock-soil repairing material used for ancient buildings, belonging to the technical field of repairing materials for buildings. According to the invention, the high-strength water-resistant rock-soil repairing material used for ancient buildings is prepared by using carboxymethyl styrene-butadiene latex and acrylic resin modified natural hydraulic lime as raw materials, zeolite as aggregate, glass fibers as a reinforcing agent, carboxymethyl cellulose as a thickener and maleic anhydride grafted starch as a compatibilizer; the addition of maleic anhydride grafted starch improves the structural compactness of the material to improve the water resistance, frost resistance and impermeability of the material and enhances the compatibility between the material and a matrix; carboxylic butadiene-styrene latex is an environmentally-friendly product with high adhesion and conjunctival strength, good mechanical andchemical stability, good fluidity, good storage stability, large filling capacity and the like; and acrylic resin has the characteristics of good gloss and color retention performance, water and chemical resistance, fast drying and so on, so the modified natural hydraulic lime has good strength and water resistance.

Description

technical field [0001] The invention relates to a preparation method of a high-strength water-resistant rock-earth ancient building repair material, which belongs to the technical field of building repair materials. Background technique [0002] Classified by time, buildings can be divided into ancient buildings with a relatively long time and modern buildings with a relatively recent time. Due to the long-term impact of the environment and man-made damage, ancient buildings will suffer damage to varying degrees. There are a large number of rich types of geotechnical cultural relics in my country, such as cave temples, ancient city walls, ancient murals, ancient tombs, and ancient urban earthen building sites. These geotechnical buildings carrying a large amount of precious historical and cultural information are extremely fragile cultural relic entities. Modern cement and other cementitious materials are not suitable for the repair of this type of building, and there are ...

Claims

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Application Information

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IPC IPC(8): C04B28/12C04B111/72
CPCC04B28/12C04B2111/72C04B2201/50C04B24/28C04B24/045C04B24/04C04B22/14C04B24/008C04B24/00C04B24/383C04B14/047C04B14/42C04B24/38
Inventor 涂民强
Owner 涂民强
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