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Concrete brick taking shell-animal shells as coarse aggregate and preparation method thereof

A technology of concrete and shellfish, which is applied in the field of concrete bricks and its preparation, can solve the problems of secondary pollution of industrial waste and single variety, and achieve the effects of increased durability, low cost, and light weight

Active Publication Date: 2015-04-08
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, industrial waste has problems such as secondary pollution and single variety.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1. Determine raw material quality benchmarks and control indicators:

[0025] (1) Shell aggregate: the shell aggregate of the present invention is a mixed aggregate, which is obtained by stirring and drying the following components in mass fraction: square ring rib snail shell (commonly known as snail) 40% ± 5 %, Bobu Dongfeng snail shell (commonly known as yellow snail) 20% ± 2%, warty lychee snail shell (commonly known as spicy snail, bitter snail) 20% ± 2%, single-toothed snail shell (commonly known as sesame snail) 20% ± 2% .

[0026] In the shell concrete brick body, the strength of the concrete brick body will be reduced when the shell particles with a larger particle size are used. The test shows that the maximum particle size of the shell should be limited to less than 25 mm. Considering the engineering design strength level and the characteristics of various shell mixed aggregates, it is most appropriate to choose the mixed shell aggregate with a maximum parti...

Embodiment 2

[0049] Concrete scheme is with embodiment 1, difference is:

[0050] A concrete brick body with shellfish shells as coarse aggregate, which is prepared by mixing the following proportions: shell aggregate 32 kg, fishing net 20 kg, sand 412 kg, fly ash 128 kg, portland cement 375 kg, water 151 kg. The composition of the shell aggregates: 45% of square ring snail shells, 18% of wavebe Dongfeng snail shells, 18% of verrucous lychee snail shells, and 19% of single tooth snail shells.

[0051] Take the shell aggregate, fishing net, Portland cement and fly ash according to the ratio and mix for 20 minutes at a stirring speed of 80r / min, then add sand and mix for 10 minutes at a stirring speed of 80r / min, and finally add an appropriate amount of water Mix at a stirring speed of 160 r / min for 30 minutes to obtain a slurry.

Embodiment 3

[0053] Concrete scheme is with embodiment 1, difference is:

[0054] A concrete brick body with shellfish shells as coarse aggregate, which is prepared by mixing the following proportions: shell aggregate 30 kg, fishing net 25 kg, sand 410 kg, fly ash 120 kg, silicate 370 kg of cement and 146 kg of water. The composition of shell aggregates: 35% of square ring snail shells, 18% of wavebe Dongfeng snail shells, 18% of verrucous lychee snail shells, and 19% of single tooth snail shells.

[0055] Take the shell aggregate, fishing net, Portland cement and fly ash according to the ratio and mix for 20 minutes at a stirring speed of 65r / min, then add sand and mix for 10 minutes at a stirring speed of 80r / min, and finally add an appropriate amount of water Mix at a stirring speed of 150 r / min for 30 minutes to obtain a slurry.

[0056] The shell aggregate concrete brick body product that above-mentioned embodiment makes has the following advantages after testing:

[0057] (1) The ...

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Abstract

A concrete brick taking shell-animal shells as coarse aggregate is mainly prepared by adding proper amount of water into the following raw materials in parts by weight: 28-32 parts of shell aggregate, 20-25 parts of a fishing net, 405-412 parts of sand, 120-128 parts of fly ash, and 370-375 parts of portland cement. The shell aggregate is a mixed aggregate of natural snail shells with different dimensions, and the fishing net is fragments which is obtained by performing crushing processing on waste fishing nets and has the maximum width no more than 1 cm. The concrete brick product is high in strength, light in self weight and strong in construction adaptability, and has the advantages of sound insulation, thermal insulation and the like at the same time because of addition of the shell aggregate. Some islands are far from mainland, high-quality construction materials and construction teams are difficult to obtain, so the manner of using local materials is well accepted, and the local characteristics of islands are be fully embodied.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a concrete brick body with shellfish shells as coarse aggregate and a preparation method thereof. Background technique [0002] Concrete bricks are commonly used building materials. As we all know, cement concrete is composed of cement, coarse aggregate (pebble, gravel), fine aggregate (sand), admixture (may be mixed or not), admixture (may be mixed or not mixed) and water etc. composition. Industrial and domestic wastes are used in the following ways in cement production: (1) as cement mixture materials, such as granulated blast furnace slag, steel slag, fly ash, volcanic ash, etc.; (2) as cement raw materials, such as shale, sludge, (3) as fuel, such as coal gangue, waste glass fiber reinforced plastics, etc. [0003] At present, the consumption of sand and gravel in my country has reached 9.4 billion tons, and the natural resources of natural sand and gravel are being exhau...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/04
CPCY02W30/91
Inventor 张焕严湘琦张子琪魏春雨
Owner ZHEJIANG UNIV
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