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Porous concrete composite material for wall

A technology of porous concrete and composite materials, applied in the field of concrete, can solve the problems of poor freeze-thaw resistance and durability, easy water absorption, reduced strength and thermal insulation performance, etc., and achieve high durability

Active Publication Date: 2020-12-08
邹发明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Porous concrete has the characteristics of light weight, thermal insulation, sound absorption and sound insulation, and is not fireproof and non-combustible. It is an energy-saving and thermal insulation material widely used in modern buildings. However, most of the existing concrete has high porosity and large surface free energy. , and it is easy to absorb water. After the concrete absorbs water, it will easily lead to an increase in drying shrinkage and a decrease in the bonding force with the plastering mortar. If this kind of concrete is used in building walls, it is prone to hollowing, mildew, cracking and large-scale shedding of the wall, which will seriously affect the wall. The appearance of the body and the service life; and the large amount of water absorption of concrete will also lead to the reduction of strength and thermal insulation performance, and the deterioration of freeze-thaw resistance and durability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The porous concrete composite material for walls provided in this embodiment includes the following raw material components in parts by weight: 100 parts of Portland cement, 300 parts of gravel, 50 parts of modified palygorskite powder, 60 parts of quartz sand, reinforced 35 parts of granules, 1 part of polypropylene fiber, 3 parts of rubber powder, 3 parts of oil-containing microcapsules, 1.5 parts of nano-silica, 1 part of carboxychitooligosaccharide, 0.5 parts of sodium stearate, 1 part of sodium dodecylsulfonate 0.5 parts of superplasticizer, 0.5 parts of polyethylene oxide, 0.2 parts of redispersible latex powder, and 60 parts of water.

[0027] In the present embodiment, the preparation method of described modified palygorskite powder comprises the following steps:

[0028] According to the mass volume ratio of 1g:0.5L, take palygorskite powder and place it in N,N-dimethylformamide, and ultrasonically disperse it for 10min to form a suspension. Add tartaric acid ...

Embodiment 2

[0043] The porous concrete composite material for walls provided in this embodiment includes the following raw material components in parts by weight: 120 parts of Portland cement, 320 parts of gravel, 70 parts of modified palygorskite powder, 100 parts of quartz sand, reinforced 40 parts of granules, 2 parts of polypropylene fiber, 4 parts of rubber powder, 4 parts of oil-containing microcapsules, 1.5 parts of nano-silica, 1 part of carboxychitooligosaccharide, 0.5 parts of sodium stearate, 1 part of sodium dodecylsulfonate 0.3 parts of superplasticizer, 0.5 parts of polyethylene oxide, 0.3 parts of redispersible latex powder, and 90 parts of water.

[0044] The components used in this example are the same as those in Example 1, only the dosage relationship of the components has been changed.

Embodiment 3

[0046] The porous concrete composite material for the wall provided in this embodiment includes the following raw material components in parts by weight:

[0047] 150 parts of Portland cement, 350 parts of gravel, 100 parts of modified palygorskite powder, 120 parts of quartz sand, 50 parts of reinforced particles, 2 parts of polypropylene fiber, 5 parts of rubber powder, 5 parts of oil-containing microcapsules, nano-dioxide 2 parts of silicon, 2 parts of carboxychitooligosaccharide, 1 part of sodium stearate, 0.5 part of sodium lauryl sulfonate, 0.3 part of water reducing agent, 0.7 part of polyethylene oxide, 0.5 part of redispersible latex powder, 100 parts of water share.

[0048] The components used in this example are the same as those in Example 1, only the dosage relationship of the components has been changed.

[0049] After pouring concrete specimens using the concrete composite materials of Examples 1 to 3, perform maintenance according to conventional curing metho...

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Abstract

The invention provides a porous concrete composite material for a wall. The porous concrete composite material comprises the following raw material components: 100-150 parts of cement, 300-350 parts of broken stone, 50-100 parts of modified palygorskite powder, 60-120 parts of quartz sand, 35-50 parts of reinforced particles, 1-2 parts of polypropylene fibers, 3-5 parts of rubber powder, 3-5 partsof oil-containing microcapsules, 1.5-2 parts of nano silicon dioxide, 1-2 parts of carboxyl chitosan oligosaccharide, 0.5-1 part of sodium stearate, 0.5-1 part of sodium dodecyl sulfate, 0.3-0.5 partof water reducing agent, 0.5-0.7 part of polyoxyethylene, 0.2-0.5 part of redispersible latex powder and 60-100 parts of water. By the adoption of the concrete material, a wall building which is compact in structure and high in impermeability, crack resistance, durability and compressive strength can be poured out.

Description

technical field [0001] The invention relates to the field of concrete, in particular to a porous concrete composite material for walls. Background technique [0002] Porous concrete has the characteristics of light weight, thermal insulation, sound absorption and sound insulation, and is not fireproof and non-combustible. It is an energy-saving and thermal insulation material widely used in modern buildings. However, most of the existing concrete has high porosity and large surface free energy. , and it is easy to absorb water. After the concrete absorbs water, it will easily lead to an increase in drying shrinkage and a decrease in the bonding force with the plastering mortar. If this kind of concrete is used in building walls, it is prone to hollowing, mildew, cracking and large-scale shedding of the wall, which will seriously affect the wall. The appearance of the body and the service life; and the large amount of water absorption of concrete will also lead to the reducti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B38/00C04B20/02C04B18/02C04B24/38C04B24/10C04B20/10C08B37/08C07H7/033C07H3/04C07H3/06C07H1/00C04B14/02C04B14/32C04B14/10C04B24/42C04B111/20C04B111/27C04B111/34
CPCC04B28/04C04B20/023C04B18/023C04B24/38C04B24/10C04B20/1066C08B37/003C07H7/033C07H3/04C07H3/06C07H1/00C04B2111/20C04B2111/27C04B2111/343C04B2201/52C04B14/102C04B14/02C04B14/06C04B16/0633C04B24/2611C04B24/42C04B14/062C04B24/085C04B24/16C04B2103/302C04B24/32C04B2103/0057C04B38/00C04B14/024C04B14/324C04B20/1007Y02W30/91
Inventor 邹发明
Owner 邹发明
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