High-strength shrinkage-free cast-in-place foam concrete wall material and wall preparation method

A foamed concrete and wall material technology, applied in the field of building materials, can solve the problems of increased wall cracks, low product strength, large shrinkage rate, etc., to avoid collapse and improve construction efficiency.

Active Publication Date: 2016-11-16
山东亮普建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, the main obstacles affecting the development and application of foam concrete products are: the strength of the product is low, the shrinkage rate is too large, and the strength of the wall after completion is lower than 5.0 MPa, which is difficult to meet the requirements of residential use. When the dry shrinkage rate exceeds 0.5mm / m, The cracks in the wall have increased a lot, and the putty and paint applied outside cannot eliminate the cracks and cracks
Therefore, the existing foamed concrete cannot meet the requirements of the walls of residential buildings and public buildings, and the cast-in-place concrete is only used in the thermal insulation and sound insulation cushion of the floor slab, the surface course of large-scale underground projects and other parts with very low technical requirements. application

Method used

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  • High-strength shrinkage-free cast-in-place foam concrete wall material and wall preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A high-strength non-shrinking cast-in-place foam concrete wall material, the wall material contains the following dry-mixed materials in parts by weight: 35 parts of cement, 30 parts of sand, 24 parts of water slag, 8.6 parts of fly ash, microsilica fume 0.3 parts, 0.3 parts of quicklime, 0.2 parts of water glass, 0.02 parts of sodium fluorosilicate, 0.3 parts of polypropylene fiber, 0.15 parts of polycarboxylate superplasticizer and 0.23 parts of thickening and water-retaining agent; Water at 0.40:1, and foaming agent at a mass ratio of 0.02:1 to the dry-mixed material; the water retention rate of the thickening and water-retaining agent is 86.5%, and the viscosity is 40550 Pa·s.

Embodiment 2

[0037] A high-strength non-shrinking cast-in-place foam concrete wall material, the wall material includes the following dry-mixed materials in parts by weight: 40 parts of cement, 22 parts of sand, 22 parts of water slag, 6.7 parts of fly ash, microsilica fume 0.23 parts, 0.3 parts of quicklime, 0.2 parts of water glass, 0.02 parts of sodium fluorosilicate, 0.3 parts of polypropylene fiber, 0.25 parts of polycarboxylate superplasticizer and 0.2 parts of thickening and water-retaining agent; Water at 0.40:1, and foaming agent at a mass ratio of 0.022:1 to the dry-mixed material; the thickening and water-retaining agent is made of polyacrylamide, hydroxypropyl methylcellulose ether, modified starch and Delan gum is compounded with raw materials, the water retention rate is 86.0%, and the viscosity is ≥40600Pa·s.

Embodiment 3

[0039] A high-strength non-shrinking cast-in-place foam concrete wall material, the wall material includes the following dry-mixed materials in parts by weight: 45 parts of cement, 20 parts of sand, 22 parts of water slag, 6.7 parts of fly ash, microsilica fume 0.23 parts, 0.3 parts of quicklime, 0.2 parts of water glass, 0.02 parts of sodium fluorosilicate, 0.3 parts of polypropylene fiber, 0.25 parts of polycarboxylate superplasticizer and 0.2 parts of thickening and water-retaining agent; Water at a ratio of 0.4:1, and foaming agent at a mass ratio of 0.025:1 to the dry-mixed material; the water retention rate of the thickening and water-retaining agent is 87.8%, and its viscosity is ≥41000 Pa·s.

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Abstract

The invention discloses a high-strength shrinkage-free cast-in-place foam concrete wall material and a wall preparation method. The wall material comprises, by weight, 30-50 parts of cement, 10-30 parts of sand, 10-30 parts of water granulated slag, 5-25 parts of coal ash, 0.1-3 parts of silica fume, 0.1-3 parts of quick lime, 0.1-3 parts of water glass, 0.01-0.45 part of sodium fluosilicate, 0.1-3 parts of polypropylene fiber, 0.1-0.5 part of a water reducer, 0.1-1 part of a water-retentive and thickening admixture, water and a foaming agent, wherein the mass ratio of the dry mixed materials to the water is (0.35-0.45):1, and the mass ratio of the dry mixed materials to the foaming agent is (0.0125-0.125):1. The high-strength shrinkage-free cast-in-place foam concrete wall material is applied in the technical field of building walls, a reasonable raw material matching ratio is adopted, quite good fluidity and stability can be achieved, the prepared wall material is high in strength and small in shrinkage rate, and the using requirements for wall portions and the like of living buildings and public buildings are completely met.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a cast-in-place foam concrete wall material. Background technique [0002] Foamed concrete is an important branch of lightweight concrete. In recent years, with the development of building energy saving and green environmental protection and fire prevention concepts, foamed concrete products have been widely used in the market, mainly because foamed concrete has light weight, fire prevention, good sound insulation and heat preservation. Performance, the same life as the building, the cast-in-place foam concrete can be combined with the main structure without a cavity, etc. Foam concrete industrial products mainly include: bricks, blocks, and panels, but their market applications are impacted by autoclaved aerated concrete products, and the market applications are less; cast-in-place foam concrete is widely used as thermal insulation and sound insulation cushions for fl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B28/04C04B111/40
CPCC04B28/00C04B28/04C04B2111/40C04B2201/20C04B2201/32C04B2201/50C04B14/06C04B18/141C04B18/08C04B18/146C04B22/064C04B14/045C04B16/0633C04B2103/302C04B2103/44C04B2103/465C04B2103/0068
Inventor 刘会泉成晓光
Owner 山东亮普建材科技有限公司
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