Assembly concrete prefabricated wallboard material using ettringite as template agent

A prefabricated wallboard and concrete technology, applied in building materials, building components, buildings, etc., to achieve the effects of high durability, good material compatibility, and low cost of raw materials

Inactive Publication Date: 2017-05-24
ANHUI XINRUI HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] On the other hand, the strength of wall insulation materials currently available in the market, such as aerated concrete and foam concrete, are generally lower than MU7.5. Most of the foam concrete, insulation mortar, rock wool board, perlite board, polystyrene board , polyurethane foam, phenolic resin board and other strengths are generally lower than 0.5MPa

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Dissolve 6.0kg of aluminum sulfate in 20.0kg of water to prepare an aluminum sulfate solution, and dissolve 2.2kg of quicklime in 20.0kg of water to prepare lime water. Put the lime water in the container, slowly add the aluminum sulfate solution under the condition of stirring at 200r / min until the pH value is 7.0, and obtain the translucent ettringite colloid. The premixed dry material is prepared and mixed as follows: Portland cement 35.0kg, fine sand 38.0kg, vitrified microspheres 8.0kg, clay ceramsite 15.0kg, zeolite powder 1.0kg. Add 0.5 kg of polypropylene fiber and 0.1 kg of shrinkage reducer to the prepared ettringite colloid, and stir for 3 minutes to obtain a premixed wet material. Then add the premixed dry ingredients and continue to stir for 5 minutes. The resulting concrete slurry is poured into molds to make bricks. After 28 days of natural curing, the dry density of the obtained sample is 1070kg / m 3 , strength 18MPa, thermal conductivity 0.18w / m·k.

Embodiment 2

[0026] Dissolve 6.5kg of aluminum sulfate in 20.0kg of water to prepare an aluminum sulfate solution, and dissolve 2.3kg of quicklime in 20.0kg of water to prepare lime water. Put the lime water in the container, slowly add the aluminum sulfate solution under the condition of stirring at 500r / min until the pH value is 7.2, and obtain the translucent ettringite colloid. The premixed dry material is prepared and mixed as follows: Portland cement 40.0kg, fine sand 50.0kg, vitrified microbeads 8.0kg, pebbles 40.0kg, shale ceramsite 20.0kg, silicon micropowder 1.2kg. Add 1.0 kg of glass fiber and 0.1 kg of waterproofing agent to the prepared ettringite colloid, and stir for 5 minutes to obtain a premixed wet material. Then add the premixed dry ingredients and continue to stir for 8 minutes. The resulting concrete slurry is poured into molds to form panels. After soaking in water for 28 days, the dry density of the obtained sample is 1310kg / m 3 , strength 25MPa, thermal conductiv...

Embodiment 3

[0028] Dissolve 4.0kg of aluminum sulfate in 20.0kg of water to prepare an aluminum sulfate solution, and dissolve 1.4kg of quicklime in 20.0kg of water to prepare lime water. Put the aluminum sulfate solution in the container, and slowly add lime water while stirring at 1150r / min, until the pH value is 7.5, and the translucent ettringite colloid is obtained. The premixed dry material is prepared and mixed as follows: 12.0kg of sulphoaluminate cement, 20.0kg of fine sand, 15.0kg of expanded pearl, 15.0kg of shale ceramsite, and 0.8kg of silica fume. Add 1.0 kg of brucite fiber and 0.1 kg of retarder to the prepared ettringite colloid, and stir for 6 minutes to obtain a premixed wet material. Then add the premixed dry ingredients and continue to stir for 4 minutes. The resulting concrete slurry is poured into molds to make special-shaped components. After 14 days of natural curing, the dry density of the obtained sample is 950kg / m 3 , strength 15MPa, thermal conductivity 0.1...

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Abstract

The invention discloses an assembly concrete prefabricated wallboard material using ettringite as a template agent and particularly relates to a three-dimensional network cellular structure using the ettringite colloid as the template agent and uniform in water phase. By adding a colloidal gel material, a fine aggregate, a coarse aggregate, an admixture and an additive, novel concrete having a uniform cellular structure and meanwhile having bearing capability and a heat preservation function is prepared. The assembly concrete prefabricated wallboard material has the advantages of light weight, high strength and low heat conductivity coefficients, can be prefabricated into bricks, building blocks and boards and parts such as assembled stairs, wall boards, floor slabs, balcony boards and roof boards, can be also cast on a construction site, is compatible with an existing aerated concrete production process, a foaming concrete production process and a common concrete prefabricating production process, is conductive to transformation and upgrading of traditional concrete industry and has the remarkable practical significance on domestic housing industrialization and development of green building concrete materials.

Description

technical field [0001] The invention relates to the field of building concrete materials, in particular to an assembled concrete prefabricated wall panel material using ettringite as a formwork agent. Background technique [0002] With the rapid development of housing industrialization and green buildings in China, new requirements are put forward for high-performance new wall materials, especially the demand for load-bearing and thermal insulation integrated products with both load-bearing capacity and good thermal insulation performance is particularly urgent . [0003] The national standard GB50368-2005 "Code for Residential Construction" clearly stipulates that the strength grade of concrete for residential structures should not be lower than C20; the strength of load-bearing masonry materials in residential structures should meet the following requirements: sintered ordinary bricks, sintered porous bricks, steamed The strength grade of pressed lime sand bricks and auto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04E04C2/04
CPCC04B28/04C04B2201/20C04B2201/32C04B2201/50E04C2/044C04B22/142C04B14/06C04B14/22C04B18/027C04B14/047C04B16/0633C04B14/18C04B14/02C04B14/062C04B14/42C04B2103/65C04B14/185C04B18/146C04B14/46C04B2103/22
Inventor 桂新辉
Owner ANHUI XINRUI HEAVY IND
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