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Special repair mortar for structure and preparation method thereof

A technology for repairing mortar and quartz sand, which is applied in the field of building materials, can solve the problems of undisclosed mortar bond strength, tensile and compressive strength, etc., and achieve the effect of increasing van der Waals force, improving flexural strength, and maintaining later strength

Active Publication Date: 2018-12-07
GUANGDONG FUTE NEW MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the repair mortar described in the application does not disclose the related performances such as bond strength, tensile and compression resistance of the mortar.

Method used

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  • Special repair mortar for structure and preparation method thereof
  • Special repair mortar for structure and preparation method thereof
  • Special repair mortar for structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] S1. Weigh 350Kg of ordinary Portland cement, 50Kg of sulphoaluminate cement, 100Kg of quartz sand (20-40 mesh), 300Kg of quartz sand (41-70 mesh) and 20Kg of montmorillonite according to parts by weight, and mix Uniform;

[0062] S2. Add 1Kg of redispersible latex powder, 1Kg of starch ether, 1Kg of cellulose ether, 0.5Kg of polycarboxylate superplasticizer, 1Kg of sodium gluconate, and mix well;

[0063] S3. Add 30Kg of styrene-butadiene emulsion, 1Kg of fiber (mixture of polypropylene fiber, wood fiber and polyvinyl alcohol fiber, the mass ratio is 1:3:2), 1Kg of composite early strength agent (boric acid, ferrous sulfate, gypsum, mass The ratio is 0.02:1:0.2), mix evenly, then add tap water accounting for 15%-25% of the dry powder weight to adjust the consistency of the mortar, stir for 3 to 5 minutes, and the product is ready.

Embodiment 2

[0065] S1. Weigh 500Kg of ordinary Portland cement, 150Kg of sulphoaluminate cement, 200Kg of quartz sand (20-40 mesh), 350Kg of quartz sand (41-70 mesh) and 50Kg of montmorillonite according to parts by weight, and mix Uniform;

[0066] S2. Add 10Kg of redispersible latex powder, 5Kg of starch ether, 5Kg of cellulose ether, 2Kg of polycarboxylate superplasticizer, 3Kg of sodium gluconate, and mix well;

[0067] S3. Add 50Kg of styrene-butadiene emulsion, 10Kg of fiber (the mixture of polypropylene fiber, wood fiber and polyvinyl alcohol fiber, the mass ratio is 1:3:3), 5Kg of composite early strength agent (boric acid, ferrous sulfate, gypsum, mass The ratio is 0.02:1:0.3), mix evenly, then add tap water accounting for 15%-25% of the dry powder weight to adjust the consistency of the mortar, and stir for 3-5 minutes to obtain.

Embodiment 3

[0069] S1. Weigh 400Kg of ordinary Portland cement, 100Kg of sulphoaluminate cement, 150Kg of quartz sand (20-40 mesh), 300Kg of quartz sand (41-70 mesh), and 50Kg of montmorillonite according to parts by weight, and mix Uniform;

[0070] S2. Add 5Kg of redispersible latex powder, 1Kg of starch ether, 1Kg of cellulose ether, 0.8Kg of polycarboxylate superplasticizer, 2Kg of white sugar, and mix well;

[0071] S3. Add 50Kg of styrene-butadiene emulsion, 10Kg of fiber (mixture of polypropylene fiber, wood fiber and polyvinyl alcohol fiber, the mass ratio is 1:4:2), 4Kg of composite early strength agent (boric acid, ferrous sulfate, gypsum, mass The ratio is 0.05:1:0.3), mix evenly, then add tap water accounting for 15%-25% of the dry powder weight to adjust the consistency of the mortar, and stir for 3-5 minutes to obtain.

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Abstract

The invention discloses special repair mortar for a structure. The mortar is prepared from the following components in parts by weight: 350-500 parts of common silicate cement, 50-150 parts of sulphate aluminum cement, 100-200 parts of 20-40-mesh quartz sand, 300-350 parts of 41-70-mesh quartz sand, 20-50 parts of montmorillonite, 30-50 parts of a styrene-butadiene rubber latex, 1-10 parts of redispersible latex powder, 1-5 parts of starch ether, 1-5 parts of cellulose ether, 0.5-2 parts of a polycarboxylate superplasticizer, 1-3 parts of a retarder, 1-10 parts of fibers and 1-5 parts of a compound early strength agent. According to the special repair mortar for the structure, by selecting and proportioning the components in proportion, comprehensively excellent utilizing performance of the components, the components draw on strengths of each other and act jointly, so that the shrinking percentage of the mortar is low. Mechanical properties of relatively high bonding strength, tensileand crush resistances and the like are obtained, and the cost performance is high.

Description

technical field [0001] The invention belongs to the technical field of building materials, and mainly relates to a special repair mortar for structures and a preparation method thereof. Background technique [0002] Repair mortar is a special mortar used for surface defects and reinforcement construction of concrete structures, which has high compressive strength, cohesiveness, crack resistance and water resistance. It can be repaired on the surface of cracked concrete buildings for industrial and civil use, or it can be repaired for damaged industrial and civil buildings that cannot meet the design requirements. Existing repair materials include inorganic repair materials such as ordinary portland cement repair mortar, polymer repair materials and polymer modified repair materials. Among them, polymer repair materials use various polymers as cementing materials, which have outstanding advantages such as high bonding strength, short curing time, and good durability, but hav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B111/72
CPCC04B28/065C04B2111/72C04B2201/50C04B7/02C04B14/06C04B14/104C04B24/2676C04B2103/0057C04B24/38C04B24/383C04B2103/302C04B24/10C04B22/0013C04B22/149C04B22/143C04B18/26C04B16/0633C04B16/0641
Inventor 林震张炜阮家铭黄宁宁胡一智卢军宇邓金宝
Owner GUANGDONG FUTE NEW MATERIALS TECH CO LTD
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