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Lightweight, high-strength and super-freezing and thawing resistant cement culture stone

A freeze-thaw-resistant, cultural stone technology, applied in the field of high-strength, lightweight, ultra-freeze-thaw-resistant cement cultural stone, can solve the problems of strength reduction, product drop, and affect the appearance of the wall, and achieve the improvement of freeze-thaw resistance Effect

Active Publication Date: 2012-07-04
南京大地建设集团绿色建筑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the internal structure of domestic artificial cultural stone products cannot form a good capillary structure.
In the event of freezing and thawing, the cracks will gradually penetrate each other, the strength will gradually decrease, and finally it will be completely lost, and the damaged product will easily fall from the outer wall, which will easily cause injury accidents
The structure of each product is different, and the degree of final powder erosion is different, which affects the appearance of the wall surface. If it needs to be replaced, the construction will be very difficult.

Method used

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  • Lightweight, high-strength and super-freezing and thawing resistant cement culture stone
  • Lightweight, high-strength and super-freezing and thawing resistant cement culture stone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 525 white Portland cement: 59%

[0043] Silica powder: 8%

[0044] Perlite: 11%

[0045] Yellow sand: 11%

[0046] Pumice: 7.5%

[0047] EPS foam particles: 2.4%

[0048] Water reducer: 0.8%

[0049] Add water and mix, and the production is completed after mold processing and maintenance. Its technical parameters: flexural strength 4.5MPa, compressive strength 18.5MPa, water absorption 8.6%, specific gravity 1.1~1.2kg / mm 3 Below, freeze-thaw test results: no change after more than 300 cycles.

Embodiment 2

[0051] 525 white Portland cement: 56%

[0052] Silica powder: 10%

[0053] Perlite: 10%

[0054] Yellow sand: 11%

[0055] Pumice: 7%

[0056] EPS foam particles: 2.4%

[0057] Water reducer: 0.65%

[0058] Add water and mix, and the production is completed after mold processing and maintenance. Its technical parameters: flexural strength 4MPa, compressive strength 17.5MPa, water absorption 9.2%, specific gravity 1.1~1.2kg / mm 3 Below, freeze-thaw test results: no change after more than 300 cycles.

Embodiment 3

[0060] 525 white Portland cement: 62%

[0061] Silica powder: 7%

[0062] Perlite: 10%

[0063] Yellow sand: 11%

[0064] Pumice: 8%

[0065] EPS foam particles: 2.8%

[0066] Water reducer: 0.9%

[0067] Add water and mix, and the production is completed after mold processing and maintenance. Its technical parameters: flexural strength 4.3MPa, compressive strength 19MPa, water absorption 10%, specific gravity 1.1~1.2kg / mm 3 Below, freeze-thaw test results: no change after more than 300 cycles.

[0068] The application of the proportion of this patent in artificial cultural stone solves the dead weight of cement cultural stone, and at the same time satisfies the requirement that the strength will not decrease under the condition of reducing the dead weight of the product. And greatly improve its frost resistance (freeze-thaw test results cycle 300 times without change) broaden the scope of application.

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Abstract

The invention relates to a lightweight, high-strength and super-freezing and thawing resistant cement culture stone. The cement culture stone consists of the following components in percentage by weight: 55 to 65 percent of 525 white silicate cement, 6 to 10 percent of silicon micro powder, 8 to 15 percent of perlite, 8 to 15 percent of yellow sand, 5 to 10 percent of pumice, 2 to 3 percent of EPS foam particles and 0.5 to 1 percent of water reducing agent. The cement culture stone overcomes the defects that the conventional cement culture stone has heavy weight and poor freezing and thawing resistance, is easy to fall from the outer wall surface and the like. Through the application of the silicon micro powder, polycarboxylic acid series efficient water reducing agent, EPS foam particlesand 525 white silicate cement, the freezing and thawing resistance of the cement culture stone is remarkably improved, the strength and lightweight requirements are met at the same time, particularlythe pore structure of the cement culture stone is improved, and the anti-freezing durability is remarkably improved.

Description

technical field [0001] The invention relates to a decorative product, in particular to a lightweight, high-strength, super freeze-thaw-resistant cement cultural stone. Background technique [0002] Artificial cement cultural stone is to use high-tech to reproduce the texture, color and texture of each natural stone material by artificial methods. It is widely used in indoor and outdoor decoration of buildings. However, at present, domestic artificial cement cultural stone is made of cement plus yellow sand and ceramsite. The product is heavy, which is not conducive to pasting the interior and exterior walls. After light weight is implemented, the strength will decrease; if it is applied to the exterior wall, its freeze-thaw resistance The man-made cement cultural stone will be damaged when it encounters freeze-thaw. The freeze-thaw damage is caused by the expansion pressure and osmotic pressure of the cement structure. During the freeze-thaw process of the water-saturated c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B14/04C04B24/26C04B16/08
CPCC04B2111/29C04B2111/802C04B28/04
Inventor 于国家张震东杜维艾诸国政杨安东
Owner 南京大地建设集团绿色建筑科技有限公司
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