Concrete building block possessing raw material containing shell-animal shells as aggregate and preparation method thereof

A technology of concrete blocks and shellfish, which is applied in the field of concrete blocks and its preparation, can solve the problems of single variety, secondary pollution of industrial waste, etc., and achieve the effects of low cost, wide sources, and strong construction adaptability

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

[0023] 1. Determine raw material quality benchmarks and control indicators:

[0024] (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% .

[0025] In the shell concrete block, the strength of the concrete block 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 particle size o...

Embodiment 2

[0047] Concrete scheme is with embodiment 1, difference is:

[0048] A concrete block whose raw materials contain shellfish shells as aggregates, which is prepared by mixing the following proportions: shell aggregates 36 kg, sand 469 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.

[0049]Take the shell aggregate, Portland cement and fly ash according to the ratio and mix them 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 to stir Mix for 30 minutes at a rotational speed of 160 r / min to obtain a slurry.

Embodiment 3

[0051] Concrete scheme is with embodiment 1, difference is:

[0052] A concrete block whose raw material contains shellfish shells as aggregates, which is prepared by mixing the following proportions: 38kg of shell aggregates, 460kg of sand, 120kg of fly ash, 370kg of Portland cement, and 146kg of water kg. 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.

[0053] Take the shell aggregate, portland cement and fly ash according to the ratio and mix them 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 to stir Mix for 30 minutes at a rotational speed of 150 r / min to obtain a slurry.

[0054] The shell aggregate concrete block product obtained in the above-mentioned embodiment has the following advantages after testing:

[0055] (1) ...

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Abstract

The invention relates to the field of building materials, and definitely relates to a concrete building block possessing a raw material containing shell-animal shells as an aggregate and a preparation method thereof. The concrete building block possessing the raw material containing shell-animal shells as the aggregate is prepared by adding proper amount of water into the following raw materials in parts by weight: 36-38 parts of shell aggregate, 460-469 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. 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 block whose raw material contains shellfish shells as aggregates and a preparation method thereof. Background technique [0002] Concrete blocks 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B14/28C04B18/08
CPCY02W30/91
Inventor 张焕张子琪严湘琦魏春雨
Owner ZHEJIANG UNIV
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