Active powder concrete and production technology for pouring fabricated component by active powder concrete

A reactive powder and concrete technology, applied in the field of concrete, can solve the problems of difficult to meet the requirements of mechanical properties, easy to produce cracks, difficult to guarantee product quality, etc., and achieve the effect of improving the utilization rate of molds, reducing viscosity, and uniform and reasonable grading.

Inactive Publication Date: 2018-11-16
湖北中力通新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Now the active powder concrete components on the market have improved performance compared with ordinary concrete components, but their mechanical properties are difficult to meet the requirements, and cracks are prone to occur, and the product quality is difficult to guarantee.

Method used

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  • Active powder concrete and production technology for pouring fabricated component by active powder concrete
  • Active powder concrete and production technology for pouring fabricated component by active powder concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] This embodiment provides a kind of reactive powder concrete, the mass of each component in unit cubic concrete content is: cement 680kg, silica fume 170kg, fly ash 150kg, quartz sand 1160kg, steel fiber 100kg, water reducer 20kg, water 190kg. Wherein, the diameter of the steel fiber is 0.18-0.22 mm, and the length of the steel fiber is 12-16 mm; the water reducing agent is a polycarboxylate water reducing agent with a water reducing rate greater than 30%.

[0029] Among them, the quartz sand is quartz sand with three particle sizes, namely: ultra-fine quartz sand with a particle size of 0.08mm-0.16mm, fine-grained quartz sand with a particle size of 0.17mm-0.315mm, and quartz sand with a particle size of The mass ratio of 0.316-0.63mm medium-sized quartz sand, ultra-fine-sized quartz sand, fine-sized quartz sand and medium-sized quartz sand is 15-25:65-75:5-15.

[0030] The reactive powder concrete of the present invention increases the consumption of quartz sand, and ...

Embodiment 2

[0046] This embodiment provides a kind of active powder concrete, the quality of each component in terms of unit cubic concrete content is: cement 700kg, silica fume 195kg, fly ash 165kg, quartz sand 1100kg, steel fiber 115kg, water reducer 22kg, water 185kg. Wherein, the diameter of the steel fiber is 0.18-0.22 mm, and the length of the steel fiber is 12-16 mm; the water reducing agent is a polycarboxylate water reducing agent with a water reducing rate greater than 30%.

[0047] Among them, the quartz sand is quartz sand with three particle sizes, namely: ultra-fine quartz sand with a particle size of 0.08mm-0.16mm, fine-grained quartz sand with a particle size of 0.17mm-0.315mm, and quartz sand with a particle size of The mass ratio of 0.316-0.63mm medium-sized quartz sand, ultra-fine-sized quartz sand, fine-sized quartz sand and medium-sized quartz sand is 15-25:65-75:5-15.

[0048] The reactive powder concrete of the present invention increases the consumption of quartz ...

Embodiment 3

[0060] This embodiment provides a kind of active powder concrete, the quality of each component in terms of unit cubic concrete content is: cement 660kg, silica fume 160kg, fly ash 180kg, quartz sand 1130kg, steel fiber 110kg, water reducer 18kg, water 195kg. Wherein, the diameter of the steel fiber is 0.18-0.22 mm, and the length of the steel fiber is 12-16 mm; the water reducing agent is a polycarboxylate water reducing agent with a water reducing rate greater than 30%.

[0061] Among them, the quartz sand is quartz sand with three particle sizes, namely: ultra-fine quartz sand with a particle size of 0.08mm-0.16mm, fine-grained quartz sand with a particle size of 0.17mm-0.315mm, and quartz sand with a particle size of The mass ratio of 0.316-0.63mm medium-sized quartz sand, ultra-fine-sized quartz sand, fine-sized quartz sand and medium-sized quartz sand is 15-25:65-75:5-15.

[0062] The reactive powder concrete of the present invention increases the consumption of quartz ...

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Abstract

The invention belongs to the technical field of concrete, and discloses active powder concrete. The active powder concrete comprises the following components by mass which is metered by taking unit cubic concrete content as a reference: 660-710 kg of cement, 160-200 kg of silicon ash, 150-180 kg of fly ash, 1100-1160 kg of quartz sand, 100-120 kg of steel fiber, 18-22 kg of a water reducer, and 180-200 kg of water. The mass ratio of ultrafine particle size quartz sand to fine particle size quartz sand and middle particle size quartz sand is 15-25:65-75:5-15. The invention also discloses a production technology for pouring a fabricated component by the active powder concrete. Three particle size types of quartz sands (an integral particle size is fine) are employed, quartz sand grading is uniform and reasonable, the particles with different materials can be better and mutually coated and embedded, and the aggregate compactness is increased, the fluidity of the papered active powder concrete is better, and the fabricated component has good flexural intensity.

Description

technical field [0001] The invention belongs to the technical field of concrete, and in particular relates to a production process of active powder concrete and its pouring prefabricated components. Background technique [0002] Reactive Powder Concrete (RPC for short) is a high-strength, high-performance concrete whose basic components include cement, mineral admixtures, quartz sand, steel fibers, superplasticizers and water. The basic preparation principle is: the preparation is based on the maximum density theoretical model, adopts the optimal particle gradation, and considers the physical and chemical reactions between particles, so that the internal defects (voids and micro-cracks) of the material are greatly reduced, and the internal microstructure of the concrete is improved. , so as to obtain ultra-high mechanical properties and durability. Compared with ordinary concrete components, the performance of active powder concrete components on the market has been improve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02C04B40/02C04B111/34
CPCC04B28/02C04B2111/343C04B2201/50C04B18/146C04B18/08C04B14/06C04B14/48C04B2103/302C04B40/0245
Inventor 付德明李从阳王喆
Owner 湖北中力通新材料有限公司
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