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A kind of superfine powder anti-crack connection paste for light partition wall strip connection

A technology of lightweight partition wall slats and ultra-fine powder, which is applied in the field of building materials, can solve the problems of high strength, difficulty in fusion, and inconvenient use of caulking materials, and achieve improved crack resistance, permeability, and crack resistance. good effect

Active Publication Date: 2017-11-07
GUIZHOU CONSTR SCI RES & DESIGN INST OF CSCEC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the strength of the caulking material is too high, and the expansion-contraction stress gap between it and the cemented surface of the board increases, making it difficult to integrate the two, and the connection is weak instead.
Cracks often appear at the joints of lightweight slatted partition walls, causing inconvenience in use and potential safety hazards

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Cement: 1000 parts, superfine powder: 1200 parts, plastic powder: 100 parts, inorganic water retaining agent: 20 parts, cellulose ether: 20 parts, vinyl acetate rubber powder or acrylic rubber powder: 20 parts, polycarboxylic acid water reducing agent: 10 parts, wood flour: 10 parts, polypropylene staple fiber: 10 parts, after mixing, pack into bags. When in use, mix the water and the connecting paste in a ratio of 0.35 to 0.45, stir evenly into a paste without granules, let it stand for 5 to 10 minutes, and then stir it again before construction and use.

[0029] Implementation effect: the 28-day compressive strength is 30MPa, the 28-day flexural strength is 13MPa, the folding ratio is 2.30, and the 28-day bonding strength is 1.3MPa.

Embodiment 2

[0031] Cement: 800 parts, ultrafine powder: 600 parts, quartz sand (particle size range: 0.5~1.5mm): 800 parts, plastic powder: 90 parts, inorganic water retaining agent: 10 parts, cellulose ether: 25 parts, acetic acid Vinyl rubber powder or acrylic rubber powder: 15 parts, polycarboxylate superplasticizer: 10 parts, polypropylene staple fiber: 15 parts, after mixing, pack into bags. When in use, mix the water and the connecting paste in a ratio of 0.35 to 0.45, stir evenly into a paste without granules, let it stand for 5 to 10 minutes, and then stir it again before construction and use.

[0032] Implementation effect: the 28-day compressive strength is 28MPa, the 28-day flexural strength is 12MPa, the folding ratio is 2.33, and the 28-day bond strength is 1.2MPa.

Embodiment 3

[0034] Cement: 1000 parts, superfine powder: 1200 parts, plastic powder: 150 parts, retarder: 10 parts, inorganic water retaining agent: 10 parts, cellulose ether: 25 parts, vinyl acetate rubber powder or acrylic rubber powder: 15 parts Parts, polycarboxylate superplasticizer: 10 parts, wood flour: 20 parts, polypropylene staple fiber: 10 parts, after mixing, pack into bags. When in use, mix the water and the connecting paste in a ratio of 0.35 to 0.45, stir evenly into a paste without granules, let it stand for 5 to 10 minutes, and then stir it again before construction and use. This ratio is used in summer construction.

[0035] Implementation effect: 28-day compressive strength is 25MPa, 28-day flexural strength is 10MPa, folding ratio is 2.5, and 28-day bonding strength is 1.3MPa.

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Abstract

The invention discloses ultrafine powdery crack-resistant connection paste for connection of a lightweight partition wall panel. The connection paste is manufactured from cement, ultrafine powder, plastic powder, an inorganic water-retaining agent, cellulose ether, adhesive powder, a polycarboxylic acid water reducer, wood powder, and short polypropylene fiber through mixing. The ultrafine powder can improve the adhesive capacity of the connection paste and a lightweight partition wall, and development of a filling function of the ultrafine powder is mainly utilized. Paste permeability is improved, and matrix adhesive force is improved by 15-30%. Plastic powder is used to improve toughness of connection paste, and a ratio of compressive strength to rupture strength of a test piece is reduced by 10-30%. Crack resistance is improved through a technical scheme that wood powder (that is sawdust) and polypropylene fiber are utilized to form a composite fiber, and the technical problem that mortar (or cement paste) at a connection place of lightweight panel is easy to crack in the prior art is solved. The connection paste has advantages of high adhesive force, good crack-resistant effect, simple construction, and low cost.

Description

technical field [0001] The invention relates to an ultrafine powder anti-cracking connection paste for connecting light-weight partition wall strips, which belongs to the technical field of building materials. Background technique [0002] As a new type of building material, lightweight partition walls have been widely used in construction projects. Its biggest advantages are light weight, easy disassembly and assembly, which is conducive to industrialized construction of buildings, increasing the usable area and reducing the effect of wet work. However, the caulking materials in the construction of light-weight slabs are generally not paid much attention to, and the polymer cement mortar below M10 is often simply prepared by using general-purpose Portland series cement, 107 glue and fine sand. In practice, the shrinkage and cracking of the light-weight slat wall is basically at the caulking part of the board and the slab. When the caulking mortar is shoveled and the joint c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2111/00637C04B18/08C04B18/141C04B18/145C04B14/28C04B14/06C04B14/041C04B16/04C04B14/12C04B24/386C04B24/26C04B24/24C04B18/26C04B16/0633
Inventor 徐立斌李新刚王林枫曲清飞朱国良丁银仙
Owner GUIZHOU CONSTR SCI RES & DESIGN INST OF CSCEC