Interface mortar for steel-structured internal wall with epoxy coating

An interface mortar and steel structure technology, applied in building construction, construction, covering/lining, etc., can solve the problems of low water absorption, small surface energy, etc., achieve good bonding performance, improve construction performance and water retention performance.

Active Publication Date: 2018-10-02
HANGXIAO STEEL STRUCTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the surface of the steel structure with epoxy coating is relatively smooth, the water absorption is extremely low, and the surface energy is small, the requirements for the bonding performance of the interface mortar are higher, and the interface mortar used in the traditional concrete structure and masonry structure cannot meet the requirements.

Method used

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  • Interface mortar for steel-structured internal wall with epoxy coating
  • Interface mortar for steel-structured internal wall with epoxy coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] An epoxy-coated interface mortar for steel structure interior walls, composed of 42.5 grade ordinary Portland cement 400, medium sand 600, ethylene vinyl acetate latex powder 70, hydroxypropyl methylcellulose in parts by weight Ether 1.0 formulated. Add 145 parts by weight of water and stir evenly, and the operating time is 60 minutes. After 7 days of standard curing, the tensile bonding strength between the interface mortar provided in this example and the epoxy-coated steel plate is 1.0 MPa, the tensile bonding strength with the concrete slab is 1.5 MPa, and the folding ratio is 2.1. This formula is suitable for use during construction in spring and autumn.

Embodiment 2

[0034] An epoxy-coated steel structure interior wall interface mortar, in parts by weight, consists of 42.5 grade ordinary portland cement 500, medium sand 500, acrylate latex powder 80, hydroxyethyl methyl cellulose ether 1.5 formulated. Add 155 parts by weight of water and stir evenly, and the operating time is 80 minutes. After 7 days of standard curing, the tensile bond strength between the interface mortar provided in this example and the epoxy-coated steel plate is 0.8MPa, the tensile bond strength with the concrete slab is 1.4MPa, and the folding ratio is 2.0. This formula is suitable for use during high temperature construction in summer.

Embodiment 3

[0036] An epoxy-coated steel structure interior wall interface mortar, in parts by weight, consists of 42.5 grade ordinary Portland cement 600, medium sand 400, styrene-butadiene latex powder 50, hydroxypropyl methyl cellulose ether 2.0 formulated. Add 150 parts by weight of water and stir evenly, and the operating time is 50 minutes. After 7 days of standard curing, the tensile bonding strength between the interface mortar provided in this example and the epoxy-coated steel plate is 0.5 MPa, the tensile bonding strength with the concrete slab is 1.0 MPa, and the folding ratio is 2.3. This formula is suitable for use during low temperature construction in winter.

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Abstract

The invention relates to interface mortar for a steel-structured internal wall with an epoxy coating. The interface mortar is prepared from components in a weight ratio as follows: 200-600 parts of cement, 200-800 parts of sand, 30-100 parts of redispersible latex powder and 0.5-3.0 parts of cellulose ether. The interface mortar has the following beneficial effects: in the interface mortar for thesteel-structured internal wall with the epoxy coating, the cement and the redispersible latex powder jointly constitute a compound cementing material system, and the cement is used for providing initial bonding strength through early rapid hydration; the redispersible latex powder is emulsified into a film after being contacted with water, the film and a hydration product of the cement form an interpenetrating polymer network structure, good adhesion is formed on a steel structure with the epoxy coating, and certain deformation resistance is realized; cellulose ether can improve workability and water retention capacity of the mortar and has an auxiliary effect on improvement of bonding performance of the interface mortar.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an epoxy-coated interface mortar for steel structure inner walls. Background technique [0002] Steel structure housing has the advantages of light weight, high strength, flexible layout, safety and reliability, low-carbon environmental protection, and reusability. It is a hot spot and trend in the development of the construction industry. The development of steel structure housing is not only to implement the development concept of "innovation, coordination, green, development, and sharing" proposed by the Fifth Plenary Session of the 18th National Congress of the Communist Party of China, but also to implement the country's requirements to resolve excess steel production capacity, and to take advantage of the housing industrialization that steel structure housing itself possesses. and green building "dual advantages" to achieve green development. In 2016, "Several O...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04E04F13/04
CPCC04B28/04C04B2201/50E04F13/04C04B14/06C04B24/383C04B24/2623C04B24/2641C04B24/2676
Inventor 陈勇敢尹卫泽刘晓光单银木胡立黎张先进李鹏
Owner HANGXIAO STEEL STRUCTURE
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