Supporting formwork-free thick coating type cement-based repair mortar and construction method thereof

A repairing mortar and coating type technology, which is applied in building maintenance, construction, building construction, etc., can solve problems such as construction speed and quality of structure repairing projects, and achieve improved construction efficiency and overall quality, good dispersion, and production convenient effect

Active Publication Date: 2020-04-07
ZHENJIANG SOBUTE NEW MATERIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the construction speed and quality problems of the structure repair project when there is no formwork, the invention provides a formwork-free thick-coated cement-based repair mortar and its construction method

Method used

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  • Supporting formwork-free thick coating type cement-based repair mortar and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A kind of thick-coated cement-based repair mortar for free formwork, which is mixed with the following components in parts by weight:

[0044] Ordinary Portland cement 36 parts,

[0045] 41.77 parts of river sand,

[0046] Expansion component 10 parts,

[0047] 2 parts of wet density control components,

[0048] Anti-sagging component 3 parts,

[0049] 3 parts rubber powder,

[0050] Thickener 0.2 part,

[0051] 2 parts retarding component,

[0052] Early strength component 2 parts,

[0053]Chemical staple fiber 0.03 parts.

[0054] Among them, the river sand is a mixture of 0-0.3mm and 0.3-0.6mm river sand with a mass ratio of 1:2; the wet density control component is a hydrophobic silicon dioxide defoamer and triterpene saponins with a mass ratio of 1:3. Aerosol mixture. The anti-sag component is 500kg / m 3 A mixture of encrypted silica fume, sodium bentonite and metakaolin at a weight ratio of 1:1:1. The rubber powder is redispersible vinyl acetate / ethylene...

Embodiment 2

[0056] A kind of thick-coated cement-based repair mortar for free formwork, which is mixed with the following components in parts by weight:

[0057] Ordinary Portland cement 36 parts,

[0058] 36.57 parts of river sand,

[0059] Expansion component 10 parts,

[0060] 2 parts of wet density control components,

[0061] Anti-sagging component 6 parts,

[0062] 5 parts rubber powder,

[0063] Thickener 0.4 part,

[0064] 2 parts retarding component,

[0065] Early strength component 2 parts,

[0066] Chemical staple fiber 0.03 parts.

[0067] Among them, the river sand is a mixture of 0-0.3mm and 0.3-0.6mm river sand with a mass ratio of 1:2; the wet density control component is a hydrophobic silicon dioxide defoamer and triterpene saponins with a mass ratio of 1:3. Aerosol mixture. The anti-sag component is 500kg / m 3 A mixture of encrypted silica fume, sodium bentonite and metakaolin at a weight ratio of 1:1:1. The rubber powder is redispersible vinyl acetate / ethylen...

Embodiment 3

[0069] A kind of thick-coated cement-based repair mortar for free formwork, which is mixed with the following components in parts by weight:

[0070] Ordinary Portland cement 35 parts,

[0071] 35.77 parts of river sand,

[0072] Expansion component 15 parts,

[0073] 3 parts of wet density control components,

[0074] Anti-sagging component 3 parts,

[0075] 3 parts rubber powder,

[0076] Thickener 0.2 part,

[0077] 3 parts of retarding component,

[0078] Early strength component 2 parts,

[0079] Chemical staple fiber 0.03 part.

[0080] Among them, the river sand is a mixture of 0-0.3mm and 0.3-0.6mm river sand with a mass ratio of 1:3; the wet density control component is a hydrophobic silicon dioxide defoamer and triterpene saponins with a mass ratio of 1:2. Aerosol mixture. The anti-sag component is 500kg / m 3 A mixture of encrypted silica fume, sodium bentonite and metakaolin at a weight ratio of 1:1:1. The rubber powder is redispersible vinyl acetate / ethyl...

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Abstract

The invention discloses supporting formwork-free thick coating type cement-based repair mortar and a construction method thereof. The supporting formwork-free thick coating type cement-based repair mortar is prepared from the following components in parts by weight: 30-40 parts of ordinary portland cement, 30-40 parts of river sand, 5-20 parts of an expansion component, 1-5 parts of a wet densityregulating component, 2-8 parts of an anti-sagging component, 1-5 parts of rubber powder, 0.1-1 part of a thickening agent, 1-5 parts of a coagulation regulating component, 1-5 parts of an early strength component and 0.01-0.05 part of chemical short fibers. The supporting formwork-free thick coating type cement-based repair mortar is developed by adopting a common portland cement-river sand system through methods such as aggregate grading optimization, admixture wet density regulation and control and anti-sagging admixture composite control technologies, has a better anti-falling effect, doesnot need the supporting formwork in the construction process, and has a thicker single construction layer (5-10 cm).

Description

technical field [0001] The invention belongs to the field of building materials, in particular to a formwork-free thick-coated cement-based repair mortar and a construction method thereof. Background technique [0002] Concrete, as a kind of heterogeneous porous material, will generally deteriorate and be destroyed during service under the erosion of external corrosive media such as carbon dioxide, chloride ions, sulfate, water or organisms. With the comprehensive development of our country's basic construction, the repair and reinforcement of concrete structures in our country will become increasingly prominent in the future for a long time. [0003] Concrete repair refers to the replacement of damaged parts of concrete structures with repair materials to restore the safety and usability of concrete structures. According to the different repair and reinforcement parts and performance requirements, the performance requirements for repair materials are also different. Since...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04E04G23/02
CPCC04B28/04E04G23/02C04B2111/00508C04B2201/50C04B14/06C04B2103/50C04B2103/304C04B18/146C04B14/104C04B14/106C04B24/26C04B24/38C04B24/383C04B2103/22C04B16/0633C04B24/04C04B22/142C04B22/064
Inventor 徐海源刘建忠沙建芳郭飞吴洲夏中升
Owner ZHENJIANG SOBUTE NEW MATERIAL CO LTD
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