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Spray-type ultrahigh-performance decorative concrete material and preparation method thereof

A decorative concrete, ultra-high-performance technology, applied in the field of building materials, can solve the problems of difficult to prepare complex multi-faceted and curved shape plates, unsatisfactory durability, easy deformation and cracking, etc., to achieve easy pumping and spraying, and bending strength. Low, good sag resistance

Active Publication Date: 2019-10-18
江苏澄筑建筑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the improvement of the public's aesthetic level, various landmark buildings with complex curved surfaces are highly respected. At this stage, GRC materials are mainly used as exterior decorative panels, but their performance is poor, and they are prone to deformation and cracking, and their durability is not satisfactory. Requirements for the same life as the building
Ordinary UHPC materials are difficult to form by spraying process, so it is difficult to prepare complex multi-faceted and curved-surface shaped plates

Method used

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  • Spray-type ultrahigh-performance decorative concrete material and preparation method thereof
  • Spray-type ultrahigh-performance decorative concrete material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Spray-type ultra-high-performance decorative concrete A is prepared from the following raw materials in parts by weight: 1200 parts of cement, 180 parts of mineral admixture, 560 parts of 15-20 mesh quartz sand, 320 parts of 45-50 mesh quartz sand, 210 parts of 400-500 mesh quartz powder, 120 parts of expansion agent, 12 parts of water reducer, 16 parts of early strength agent, 1.2 parts of defoamer, 10 parts of polymer emulsion, 12 parts of bentonite, 0.3 parts of hydroxyethyl cellulose, 0.06 parts of starch ether, 80 parts of alkali-resistant glass fiber, 2 parts of pigment, and 120 parts of water.

[0025] The cement uses white Portland cement with a strength grade of 52.5.

[0026] The mineral admixture is a mixture of S95 grade granulated blast furnace slag powder and white silica fume in a weight ratio of 80:20. The silicon dioxide content of white silica fume is not less than 92%.

[0027] The expansion agent is the concrete expansion agent model HP-CSA produce...

Embodiment 2

[0061] Spray-type ultra-high-performance decorative concrete B is prepared from the following raw materials in parts by weight: 1100 parts of cement, 100 parts of mineral admixture, 400 parts of 15-20 mesh quartz sand, 400 parts of 45-50 mesh quartz sand, 200 parts of 400-500 mesh quartz powder, 75 parts of expansion agent, 7.5 parts of water reducer, 10 parts of early strength agent, 2 parts of defoamer, 16 parts of polymer emulsion, 15 parts of bentonite, 0.15 parts of hydroxyethyl cellulose, 0.03 parts of starch ether, 100 parts of alkali-resistant glass fiber, 0 parts of pigment, and 100 parts of water.

[0062] The source and composition of cement, mineral admixture, quartz sand, expansion agent, water reducer, early strength agent, defoamer, polymer emulsion, bentonite, hydroxyethyl cellulose, starch ether and alkali-resistant glass fiber are the same Example 1.

[0063] The specific preparation method of spray-on ultra-high performance decorative concrete B comprises t...

Embodiment 3

[0070] Spray-type ultra-high-performance decorative concrete C is prepared from the following raw materials in parts by weight: 800 parts of cement, 300 parts of mineral admixture, 450 parts of 15-20 mesh quartz sand, 300 parts of 45-50 mesh quartz sand, 400 parts of 400-500 mesh quartz powder, 50 parts of expansion agent, 10 parts of water reducer, 20 parts of early strength agent, 2 parts of defoamer, 20 parts of polymer emulsion, 10 parts of bentonite, 0.35 parts of hydroxyethyl cellulose, 0.07 parts of starch ether, 80 parts of alkali-resistant glass fiber, 3.5 parts of pigment, and 150 parts of water.

[0071] The source and composition of cement, mineral admixture, expansion agent, water reducer, early strength agent, defoamer, polymer emulsion, bentonite, hydroxyethyl cellulose and starch ether are the same as in Example 1.

[0072] The specific preparation method of spray-on ultra-high performance decorative concrete C comprises the following steps:

[0073] (1) Put t...

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Abstract

The invention provides a spray-type ultrahigh-performance decorative concrete material and a preparation method thereof, and relates to the technical field of building materials. The concrete materialis prepared from the following raw materials: 800-1300 parts of cement, 100-300 parts of a mineral admixture, 400-600 parts of quartz sand of 15-20 meshes, 300-400 parts of quartz sand of 45-50 meshes, 200-400 parts of quartz powder of 400-500 meshes, 50-150 parts of an expansive agent, 6-15 parts of a water reducing agent, 5-25 parts of an early strength agent, 1-2.5 parts of a defoamer, 5-20 parts of a polymer emulsion, 8-20 parts of bentonite, 0.1-0.4 part of hydroxyethyl cellulose, 0.02-0.1 part of starch ether, 70-110 parts of alkali-resistant glass fiber, 0-10 parts of pigment and 90-160 parts of water. The ultrahigh-performance decorative concrete material has high mechanical properties, can be sprayed for construction, and has easy pump transfer and spray and good anti-sagging performance.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a spray-coated ultra-high performance decorative concrete material and a preparation method thereof. Background technique [0002] Ultra-high performance concrete (UHPC) has ultra-high mechanical properties and excellent durability. Using UHPC decorative panels instead of various coatings can greatly reduce the maintenance cost of buildings and improve the decorative effect of buildings. Therefore, it is more and more popular with the public. [0003] Due to the improvement of the public's aesthetic level, various landmark buildings with complex curved surfaces are highly respected. At this stage, GRC materials are mainly used as exterior decorative panels, but their performance is poor, and they are prone to deformation and cracking, and their durability is not satisfactory. Requirements for the same lifespan as the building. However, ordinary UHPC materials are dif...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B111/82
CPCC04B28/04C04B2111/00155C04B2111/82C04B2201/50C04B2201/52C04B18/141C04B18/146C04B14/06C04B2103/0068C04B2103/302C04B24/04C04B24/32C04B24/2641C04B14/104C04B24/383C04B24/38C04B14/42C04B2103/54
Inventor 曹亢王磊徐志刚张克
Owner 江苏澄筑建筑科技有限公司
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