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Color recycled concrete for producing decorative blocks

A color regeneration and concrete technology, applied in the field of building materials, to achieve the effects of good impermeability, rapid strength development and low product cost

Active Publication Date: 2012-11-07
SHANGHAI TRENDZONE CONSTRUCTION DECORATION GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But because at present recycled coarse aggregate and recycled fine aggregate are still difficult to be accepted by most ready-mixed concrete enterprises, therefore, the inventor thinks that recycled coarse aggregate and recycled fine aggregate are used for the production of various concrete blocks in advance a new invention

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A colored recycled concrete for the production of decorative blocks, in parts by weight, 100 parts by weight of quick-hardening sulfoaluminate cement, 30 parts calcined coal gangue, 15 parts fly ash, 3 parts calcium carbide slag, 0.001 parts salicylic acid, and 300 parts recycled coarse aggregate , Regenerated fine aggregate 200, red pigment 15, yellow pigment 0, blue pigment 0, naphthalene superplasticizer 0.4, cellulose fiber 0.1, glass fiber 0.2. After adding water accounting for 5.5% of the weight of the product and stirring evenly, the Viber consistency is 20s, the initial setting time is 52 minutes, and the final setting time is 75 minutes. Red after hardening. The 1d compressive strength is 16.5MPa, the 3d compressive strength is 28.3MPa, the 28d compressive strength is 32.2MPa, the impermeability grade is P8, and the shrinkage rate is 0.042%. The 390mm×190mm×190mm hollow block produced with this colored recycled concrete has a strength grade of MU10 when the po...

Embodiment 2

[0053] A colored recycled concrete for the production of decorative blocks, in parts by weight, 100 parts of rapid hardening sulfoaluminate cement, 60 parts of calcined coal gangue, 40 parts of fly ash, 12 parts of calcium carbide slag, 0.02 parts of salicylic acid, and 500 parts of regenerated coarse aggregate , Recycled fine aggregate 360, red pigment 0, yellow pigment 15, blue pigment 0, naphthalene superplasticizer 1.5, cellulose fiber 0.45, glass fiber 0.60. After adding water accounting for 7.0% of the weight of the product and stirring evenly, the Viber consistency is 16s, the initial setting time is 1h10min, and the final setting time is 1h35min. It turns yellow when hardened. The 1d compressive strength is 19.0MPa, the 3d compressive strength is 31.2MPa, the 28d compressive strength is 34.4MPa, the impermeability grade is P9, and the shrinkage rate is 0.030%. The 390mm×190mm×190mm hollow block produced with this colored recycled concrete has a strength grade of MU15 ...

Embodiment 3

[0055] A colored recycled concrete for the production of decorative blocks, in parts by weight, 100 parts by weight of rapid-hardening sulfoaluminate cement, 40 parts calcined coal gangue, 35 parts fly ash, 8 parts calcium carbide slag, 0.0016 salicylic acid, and 400 parts recycled coarse aggregate , Regenerated fine aggregate 310, red pigment 0, yellow pigment 0, blue pigment 15, naphthalene superplasticizer 1.1, cellulose fiber 0.35, glass fiber 0.40. After adding water accounting for 7.5% of the weight of the product and stirring evenly, the Viber consistency is 22s, the initial setting time is 1h20min, and the final setting time is 1h50min. It turns blue when hardened. The 1d compressive strength is 16.3MPa, the 3d compressive strength is 27.6MPa, the 28d compressive strength is 31.0MPa, the impermeability grade is P7, and the shrinkage rate is 0.043%. The 390mm×190mm×190mm hollow block produced with this colored recycled concrete has a strength grade of MU10 when the por...

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Abstract

The invention belongs to the technical field of building materials and particularly relates to color recycled concrete for producing decorative blocks. The color recycled concrete consists of fast hardening sulphate aluminum cement, calcined coal gangue, pulverized fuel ash, carbide slag, salicylic acid, recycled coarse aggregate, recycled fine aggregate, a red pigment, a yellow pigment, a blue pigment, a naphthalene-series high-efficiency water reducing agent, cellulose fiber and glass fiber. The fast hardening sulphate aluminum cement is used to replace silicate-series cement, the calcined coal gangue, the pulverized fuel ash and the carbide slag are taken as gelled materials and the recycled coarse aggregate and the recycled fine aggregate produced by the processing of waste concrete are used. Three pigments with basic colors are adopted, so that various other colors can be obtained by mixing the pigments according to a design requirement. The concrete of the invention has the advantages of easy molding, rapid intensity development, high compressive strength, high permeability resistance, low contractibility rate, uniform color, waste recycling, energy conservation, reduction in consumption, capability of meeting the strategy requirement of sustainable development of construction industry and good market prospect.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to colored recycled concrete for producing decorative blocks. Background technique [0002] With the rapid improvement of my country's national economic level, the construction industry has higher and higher requirements for the performance of building materials. It is more and more common to use concrete decorative blocks for the walls of residential quarters, roofs and floors of buildings, square walls, and protective slope embankments. The types of concrete decorative blocks tend to be diversified, such as colored blocks, split blocks, chiseled blocks, brushed striped blocks, polished blocks, Peng-shaped blocks, molded blocks, and exposed blocks. Material blocks, imitation old blocks, glazed blocks, perforated lattice blocks, etc. have all been successfully produced and applied in our country. [0003] With the demolition of old buildings in cities or the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/36C04B18/16C04B14/42C04B16/06
CPCC04B2111/82C04B2111/34C04B28/06C04B2111/00293C04B2103/302Y02W30/91C04B14/42C04B18/06C04B18/08C04B18/141C04B18/167C04B18/24C04B20/0096C04B24/06C04B24/226C04B2103/54
Inventor 孙振平杨正宏高峰
Owner SHANGHAI TRENDZONE CONSTRUCTION DECORATION GROUP CO LTD
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