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Construction technology for large-area structural repair systems

A construction technique and a large-area technology, applied in the direction of building structure, construction, covering/lining, etc., can solve problems such as sag or collapse, and the repair system cannot meet the needs, etc., to achieve good anti-slip and sag, excellent wet bonding Effect of strength and thixotropy, excellent wet bond strength

Active Publication Date: 2022-01-28
北京建工新型建材有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of the new ancient method, the entire repair system includes interface mortar, repair mortar, plastering and leveling mortar, and anti-crack mortar. The entire repair system is prone to sag or collapse due to the influence of its own gravity during the construction process. , the repair project of large-area structure has higher requirements on the bonding strength and anti-sag performance of the repair system, which makes it difficult for the existing repair system to meet the needs. Therefore, there is still room for improvement

Method used

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  • Construction technology for large-area structural repair systems
  • Construction technology for large-area structural repair systems
  • Construction technology for large-area structural repair systems

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0034] Dissolve 6.5Kg of mercaptopolyvinyl alcohol in 135Kg of water at 90°C, add 9Kg of methyl methacrylate and 1.5Kg of sodium bicarbonate to the aqueous solution of mercaptopolyvinyl alcohol at 80°C and mix well, then add the weight percentage Concentration of 1% ammonium persulfate aqueous solution 17.5Kg, heat preservation reaction for 1 hour; keep the reaction temperature of 80 ℃ and start to drop 52Kg of methyl methacrylate, 58Kg of triisopropoxysilyl propyl methacrylate, 4,4 , the mixed monomer of 4-trifluoro-2-butenol 18Kg, phosphoenol pyruvic acid 12Kg and the weight percentage concentration are 1% ammonium persulfate aqueous solution 55Kg, the time of the dropwise addition of control mixed monomer is 5 hours, controls The dripping time of the ammonium persulfate aqueous solution with a concentration of 1% by weight is 6 hours; after the addition of the mixed monomers, the insulation reaction is continued for 1 hour to obtain a polymer emulsion;

[0035] A mixture of...

preparation example 2

[0037] Dissolve 5Kg of mercaptopolyvinyl alcohol in 140Kg of water at 92°C, add 10Kg of methyl methacrylate and 1Kg of sodium bicarbonate to the aqueous solution of mercaptopolyvinyl alcohol at 78°C and mix evenly, then add the weight percent concentration of 1% ammonium persulfate aqueous solution 20Kg, heat preservation reaction for 1 hour; keep the reaction temperature of 78 °C and start to drop 50Kg of methyl methacrylate, 60Kg of triisopropoxysilyl propyl methacrylate, 4,4,4- The mixed monomer of trifluoro-2-butenol 15Kg, phosphoenol pyruvic acid 15Kg and weight percent concentration are 1% ammonium persulfate aqueous solution 50Kg, and the dropwise addition time of control mixed monomer is 5 hours, controls weight percent concentration The dripping time of the 1% ammonium persulfate aqueous solution is 6 hours; after the addition of the mixed monomers, the insulation reaction is continued for 1 hour to obtain a polymer emulsion;

[0038] The mixture comprising the polyme...

preparation example 3

[0040] Dissolve 8Kg of mercaptopolyvinyl alcohol in 130Kg of water at 93°C, add 8Kg of methyl methacrylate and 2Kg of sodium bicarbonate to the aqueous solution of mercaptopolyvinyl alcohol at 82°C and mix evenly, then add the weight percentage concentration of 1% ammonium persulfate aqueous solution 15Kg, heat preservation reaction for 1 hour; keep the reaction temperature of 82 °C and start to drop 55Kg of methyl methacrylate, 55Kg of triisopropoxysilyl propyl methacrylate, 4,4,4- The mixed monomer of trifluoro-2-butenol 20Kg, phosphoenol pyruvic acid 10Kg and the weight percent concentration are 60Kg of ammonium persulfate aqueous solution of 1%, and the dropwise addition time of control mixed monomer is 5 hours, controls weight percent concentration The dripping time of the 1% ammonium persulfate aqueous solution is 6 hours; after the addition of the mixed monomers, the insulation reaction is continued for 1 hour to obtain a polymer emulsion;

[0041] The mixed material of...

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Abstract

The invention relates to a construction process for a large-area structure repair system, which includes the following process steps: S1 base-level treatment of the wall: removing loose parts of the wall, and cleaning the surface of the wall; S2 interface treatment of the wall: Wet the wall, and when the surface of the wall is dry and the inside is wet, use an interface agent to coat the surface of the wall and form an interface layer; S3 wall repair: After the interface layer is dry, use repair mortar to repair the wall Coarse leveling and forming a repair layer; plastering treatment of S4 wall: after the repair layer is dry, use plastering mortar and water to uniformly mix plastering mortar slurry to form a plastering layer; plastering treatment of S5 wall : After the plastering layer is dried, the plastering mortar slurry is uniformly mixed with water for plastering and forming a plastering layer. The invention has the advantages of strong bonding strength and anti-sag performance between large-area structure repair systems.

Description

technical field [0001] The invention relates to the technical field of wall repair engineering, more specifically, it relates to a construction technology for a large-area structure repair system. Background technique [0002] Most of the wall repair projects, especially the walls of ancient buildings, are long and large in area, and the walls have no shrinkage joints. In the case of the new ancient method, the entire repair system includes interface mortar, repair mortar, plastering and leveling mortar, and anti-crack mortar. The entire repair system is prone to sag or collapse due to the influence of its own gravity during the construction process. , the restoration of large-area structures has higher requirements on the bonding strength and anti-sag performance of the restoration system, which makes it difficult for the existing restoration system to meet the needs. Therefore, there is still room for improvement. Contents of the invention [0003] In view of the defici...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C08F261/04C08F220/14C08F230/08C08F216/14E04F13/02E04F13/04C04B111/72
CPCC04B28/04C08F261/04E04F13/02E04F13/04C04B2111/72C04B2201/50C08F220/14C08F230/08C08F216/1408C04B18/08C04B16/0633C04B2103/12C04B2103/302C04B24/383C04B22/08C04B2103/0057C04B14/06
Inventor 陈喜旺温晓凯王丽丽王军韩书伟孔凡敏马彬
Owner 北京建工新型建材有限责任公司
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