Reactive powder concrete for cable trough cover boards of railways

A cable groove cover and active powder technology, applied in the direction of electrical components, etc., can solve the problems of high cost, poor surface finish, and little promotion significance, and achieve the effects of low cost, reduced bone-to-glue ratio, and improved appearance quality

Inactive Publication Date: 2010-07-21
CHINA RAILWAY NO 17 BUREAU GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this kind of active powder concrete are po

Method used

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  • Reactive powder concrete for cable trough cover boards of railways

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The active powder concrete used for the cover plate of railway cable trough is composed of the following raw materials by weight (1 kg per part): 670 parts of P.II42.5 cement, 1120 parts of quartz sand, 162 parts of water, and 320 parts of RPC special admixture , 96 parts of steel fiber, 38 parts of polycarboxylate admixture.

[0023] The quartz sand adopts the quartz sand of Hebei Jinjing Mineral Powder Co., Ltd., and its silicon dioxide content is 99.74%. 0.63-0.315mm) 29%, fine-grained quartz sand (0.315-0.16mm) 15%.

[0024] The cement is Tangshan Jidong Cement Co., Ltd. "Dunshi" brand P.II42.5 cement;

[0025] The RPC admixture adopts the RPC special admixture produced by Beijing Qitian Chemical Co., Ltd.;

[0026] The steel fiber adopts the fine high-strength steel fiber produced by Tianjin Luqiao Baotai Technology Co., Ltd.;

[0027] The polycarboxylate admixture adopts RPC special polycarboxylate high-performance water reducer from Hebei Jinduo Building Mater...

Embodiment 2

[0032] The active powder concrete used for the cover plate of railway cable trough is composed of the following raw materials by weight (1 kg per part): 688 parts of P.II42.5 cement, 1150 parts of quartz sand, 150 parts of water, and 295 parts of RPC special admixture , 85 parts of steel fiber, 35.9 parts of polycarboxylate admixture.

[0033] The quartz sand adopts the quartz sand of Hebei Jinjing Mineral Powder Co., Ltd., and its silicon dioxide content is 99.74%. 0.63 ~ 0.315mm) 34%.

[0034] The cement is Tangshan Jidong Cement Co., Ltd. "Dunshi" brand P.II 42.5 cement;

[0035] The RPC admixture adopts the RPC special admixture produced by Beijing Qitian Chemical Co., Ltd.;

[0036] The steel fiber adopts the fine high-strength steel fiber produced by Tianjin Luqiao Baotai Technology Co., Ltd.;

[0037] The polycarboxylate admixture adopts RPC special polycarboxylate high-performance water reducer from Hebei Jinduo Building Material Technology Development Co., Ltd.

...

Embodiment 3

[0040] The active powder concrete used for the cover plate of the railway cable trough is composed of the following raw materials by weight (1 kg per part): 650 parts of P.II42.5 cement, 1200 parts of quartz sand, 140 parts of water, and 295 parts of RPC special admixture , 85 parts of steel fiber, 33 parts of polycarboxylate admixture.

[0041] The quartz sand adopts the quartz sand of Hebei Jinjing Mineral Powder Co., Ltd., and its silicon dioxide content is 99.74%. 0.63-0.315mm) 29%, fine-grained quartz sand (0.315-0.16mm) 15%.

[0042] The cement is Tangshan Jidong Cement Co., Ltd. "Dunshi" brand P.II42.5 cement;

[0043] The RPC admixture adopts the RPC special admixture produced by Beijing Qitian Chemical Co., Ltd.;

[0044]The steel fiber adopts the fine high-strength steel fiber produced by Beijing Fostar Rail Transit Technology Co., Ltd.;

[0045] The polycarboxylate admixture adopts RPC special polycarboxylate high-performance water reducer from Hebei Jinduo Build...

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Abstract

The invention provides reactive powder concrete (RPC) for cable trough cover boards of railways, and belongs to the technical field of building materials. In order to solve the problem of high construction cost of reactive powder concrete used for the conventional railway construction, the invention adopts a technical scheme that: the reactive powder concrete is prepared from the following raw materials in part by weight: 625 to 690 parts of cement, 1,120 to 1,200 parts of quartz sand, 140 to 162 parts of water, 295 to 320 parts of admixture special for the RPC, 85 to 140 parts of steel fiber and 33 to 38 parts of polycarboxy acid admixture with the solid content more than or equal to 30 percent through stirring, vibrating and curing. Compared with the conventional products, the reactive powder concrete can reduce cost by about 500 yuan/cubic meter.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to reactive powder concrete (RPC) for railway cable channel cover plates. Background technique [0002] Reactive powder concrete (RPC) is a new type of cement-based composite material with ultra-high compressive strength, high durability and high toughness. agent, steel fiber and supplemented by an appropriate maintenance system. The Chinese invention patent whose publication number is CN 101565288A discloses a kind of active powder concrete for railway bridge cover plate, which is composed of cement, silica fume, quartz sand, external admixture, steel fiber, admixture and water in a weight ratio of 650 to 700: 170-200: 1150-1200: 160-250: 140-150: 30-40: 135-160 are uniformly mixed, and the external admixture is fly ash or slag. The disadvantages of this active powder concrete are poor surface finish, high cost, and little promotional significance. Conten...

Claims

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Application Information

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IPC IPC(8): C04B28/00H02G3/04
CPCC04B28/02
Inventor 刘世安刘东红贾江海王玉池孟华梅曹志强吕现明徐保军
Owner CHINA RAILWAY NO 17 BUREAU GRP
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