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Light-weight high-performance concrete for fabricated building and preparation method of light-weight high-performance concrete

A high-performance concrete and construction technology, applied in the field of concrete, can solve problems such as poor crack resistance, insufficient toughness, and self-heavy weight, and achieve the effect of enhancing impermeability, reducing construction difficulty, and reducing self-compacting

Active Publication Date: 2022-04-05
山西黄河前沿新材料研究院有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a lightweight high-performance concrete for prefabricated buildings and its preparation method, so as to solve the shortcomings of ordinary prefabricated concrete such as heavy weight, insufficient toughness, and poor crack resistance, and to improve the load capacity and earthquake resistance of the structure. performance, reduce hoisting and transportation costs, and reduce construction strength

Method used

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  • Light-weight high-performance concrete for fabricated building and preparation method of light-weight high-performance concrete
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  • Light-weight high-performance concrete for fabricated building and preparation method of light-weight high-performance concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1 A kind of lightweight high-performance concrete for prefabricated buildings, its preparation method is as follows:

[0047] Step 1. Preparation of solid waste ultra-light ceramsite:

[0048] Weigh 20 parts of bauxite tailings, 40 parts of red mud, 40 parts of kaolin tailings, 0.15 parts of foaming agent SiC, and 28 parts of water by weight, put them into a granulator to make green balls after mixing, put the green balls into Dry in an oven at 110°C for 2 hours and then cool down. Put the dried green balls into a box-type electric furnace, raise the temperature to 600°C, keep it at 600°C for 10 minutes, and then continue to heat up to 1120°C at a rate of 10°C / min. Roast for 30 minutes and cool down to obtain solid waste ultra-light ceramsite, the gradation of which is 3-5mm: 5-8mm: 8-15mm = 4.2:4.5:1.3.

[0049] Step 2 compound ultrafine powder:

[0050] Take nano-CaCO with an average particle size ≤ 0.1 μm 3 , microbead ultrafine fly ash with an average ...

Embodiment 2

[0058] Embodiment 2 A kind of lightweight high-performance concrete for prefabricated buildings, its preparation method is as follows:

[0059] Step 1 Preparation of solid waste ultra-light ceramsite:

[0060] Weigh 20 parts of bauxite tailings, 40 parts of red mud, 40 parts of kaolin tailings, 0.15 parts of foaming agent SiC, and 28 parts of water by weight, put them into a granulator to make green balls after mixing, put the green balls into Dry in an oven at 110°C for 2 hours and then cool down. Put the dried green balls into a box-type electric furnace, raise the temperature to 600°C, keep it at 600°C for 10 minutes, and then continue to heat up to 1120°C at a rate of 10°C / min. After roasting for 30 minutes, cool down to obtain solid waste ultra-light ceramsite, the gradation of which is 3-5mm:5-8mm:8-15mm=4.2:4.5:1.3.

[0061] Step 2 compound ultrafine powder:

[0062] Take nano-CaCO with an average particle size ≤ 0.1 μm 3 , microbead ultrafine fly ash with an average...

Embodiment 3

[0070] Embodiment 3 A kind of lightweight high-performance concrete for prefabricated buildings, its preparation method is as follows:

[0071] Step 1 Preparation of solid waste ultra-light ceramsite:

[0072] Weigh 20 parts of bauxite tailings, 40 parts of red mud, 40 parts of kaolin tailings, 0.15 parts of foaming agent SiC, and 28 parts of water by weight, put them into a granulator to make green balls after mixing, put the green balls into Dry in an oven at 110°C for 2 hours and then cool down. Put the dried green balls into a box-type electric furnace, raise the temperature to 600°C, keep it at 600°C for 10 minutes, and then continue to heat up to 1120°C at a rate of 10°C / min. After roasting for 30 minutes, cool down to obtain solid waste ultra-light ceramsite. Its gradation is 3~5mm: 5~8mm: 8~15mm=4.2:4.5:1.3.

[0073] Step 2 compound ultrafine powder:

[0074] Take nano-CaCO with an average particle size ≤ 0.1 μm 3 , microbead ultrafine fly ash with an average parti...

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Abstract

The invention belongs to the technical field of concrete, and particularly discloses lightweight high-performance concrete for a prefabricated building and a preparation method of the lightweight high-performance concrete. Each cubic meter of the concrete comprises the following raw materials by weight: 300-350 kg of cement, 160-200 kg of compound ultrafine powder, 300-350 kg of shale pottery sand, 300-450 kg of solid waste ultralight ceramsite, 4-7 kg of a polycarboxylic acid superplasticizer, 0.5-7 kg of fibers and 100-200 kg of water, the special compound ultrafine powder is prepared, and the solid waste ultralight ceramsite is subjected to surface modification and other operations to achieve the purpose of the invention. The concrete prepared by the invention has the advantages of light dead weight, sufficient toughness, good crack resistance, heat preservation, noise reduction and the like, does not need to vibrate during forming, can improve the loading capacity and anti-seismic property of the structure, reduces the hoisting and transportation cost and reduces the construction strength, and is environment-friendly, low-carbon and energy-saving concrete.

Description

technical field [0001] The invention belongs to the technical field of concrete, and in particular relates to a lightweight high-performance concrete for prefabricated buildings and a preparation method thereof. Background technique [0002] In recent years, with the socio-economic development and the acceleration of urbanization, the construction industry has advanced at an unprecedented speed, the height, span and complexity of buildings have continued to increase, the consumption of concrete has become increasingly large, and concrete is also moving towards high The performance direction continues to evolve. With the introduction of environmental protection policies such as energy conservation, emission reduction and sustainable development in urban construction, prefabricated building construction has gradually become the development trend of building industrialization. [0003] Although concrete itself has many advantages such as high compressive strength, it inevitabl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B38/08C04B18/02C04B20/10C04B111/40C04B111/28C04B111/20C04B111/52
CPCY02W30/91
Inventor 王郭勇张影刘锦钏刘力源张恒基刘哲赵璇陈帅张岩乐晓瑞
Owner 山西黄河前沿新材料研究院有限公司
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