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A kind of frost-resistant concrete and preparation method thereof

A concrete and crushed stone technology, applied in the field of concrete, can solve the problems of strength, toughness and stability, easy cracks, water seepage, damage to engineering facilities, etc., to achieve excellent anti-freezing performance, improve anti-freezing performance, and increase air content Effect

Active Publication Date: 2021-04-02
深圳市东大洋建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the alpine region, due to the harsh environment and large temperature differences, the concrete will go through repeated freezing and melting processes, and it is prone to cracks and water seepage, which seriously affects its strength, toughness and stability. Local tunnels, dams, hydropower stations and other engineering facilities cause serious damage, which will bring huge economic losses

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The present embodiment provides a kind of frost-resistant concrete, comprising the following components by mass: 383.5kg of cement, 1228.5kg of gravel, 1144kg of modified pottery sand, 214.5kg of silica powder, 292.5kg of fly ash, 97.5kg The slag powder of kg, the rosin soap of 0.39kg, the wood calcium powder of 5.2kg, the polyoxyindene resin sodium sulfonate of 6.5kg and the water of 214.5kg. Among them, rosin soap is a commercially available rosin air-entraining agent, and wood calcium powder and polyoxyindene resin sodium sulfonate are common commercially available calcium lignosulfonate water reducers and coumarone resin water reducers. agent.

[0031] The modified clay sand used in this example is prepared according to the following method: Portland cement is added to the sodium methyl siliconate solution with a mass percentage of 0.15% to obtain a modified solution. The quality of the Portland cement is sodium methyl siliconate The mass of the solution is 14.5%; ...

Embodiment 2

[0037]The difference between the present embodiment and the first embodiment is that the formula of the present embodiment includes the following components by mass: 360kg of cement, 1140kg of gravel, 1068kg of modified pottery sand, 204kg of silica powder, and 276kg of pulverized coal The slag powder of ash, 96kg, the sodium dodecylbenzenesulfonate of 0.48kg, the wood calcium powder of 3.6kg, the zeolite powder of 1.2kg, the polyoxyindene resin sodium sulfonate of 7.2kg and the water of 204kg.

[0038] The modified pottery sand used in this example is prepared according to the following method: Portland cement is added to the sodium methyl siliconate solution with a mass percentage of 0.15% to obtain a modified solution. The quality of the Portland cement is methyl silicon alcohol 10% of the mass of the sodium solution; put the pottery sand in the modified solution, soak it for 3 seconds, take it out and dry it in the air. The gravel used in this embodiment is composed of gra...

Embodiment 3

[0040] The difference between this example and Example 1 is that the formula of this example includes the following components by mass: 154kg of cement, 477.5kg of gravel, 450kg of modified pottery sand, 86kg of silica powder, 117.5kg of Fly ash, 41kg of slag powder, 0.1kg of rosin soap, 0.1kg of sodium alkylbenzene sulfonate, 0.1kg of triterpene saponins, 1.8kg of wood calcium powder, 0.48kg of zeolite powder, 3.72kg of polyoxygen Sodium indene resin sulfonate and 87.5 kg of water. Among them, triterpene saponins are common triterpene saponin air-entraining agents on the market.

[0041] The modified pottery sand used in this example is prepared according to the following method: Portland cement is added to the sodium methyl siliconate solution with a mass percentage of 0.15% to obtain a modified solution. The quality of the Portland cement is methyl silicon alcohol 8.3% of the mass of the sodium solution; put the pottery sand in the modified solution, soak it for 5s, take i...

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Abstract

The invention relates to frost-resistant concrete and a preparation method thereof, and belongs to the technical field of concrete. The adopted technical scheme is that the frost-resistant concrete isprepared from the following components in parts by weight: 295 to 320 parts of cement, 945 to 970 parts of gravels, 880 to 915 parts of modified pottery sand, 165 to 180 parts of silicon micro powder, 225 to 245 parts of coal ash, 75 to 90 parts of slag powder, 0.3 to 1.5 parts of an air entraining agent, 9 to 14.5 parts of a water reducing agent and 165 to 195 parts of water. The formula of thefrost-resistant concrete is simple, high in frost-resistant durability and suitable for being applied to various engineering projects in alpine areas.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to a frost-resistant concrete and a preparation method thereof. Background technique [0002] Concrete refers to the collective name of engineering composite materials that aggregate aggregates into a whole by cementitious materials. It is widely used in underground engineering, bridges, pools, water towers, culverts, tunnels, wharves, dams, hydropower stations and other engineering fields. In the alpine region, due to the harsh environment and large temperature differences, the concrete will go through repeated freezing and melting processes, and it is prone to cracks and water seepage, which seriously affects its strength, toughness and stability. Local tunnels, dams, hydropower stations and other engineering facilities cause serious damage, which will bring huge economic losses. [0003] In the prior art, the Chinese patent with publication number CN108164207A discloses a new t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B38/10C04B20/02C04B18/02C04B111/20
CPCC04B20/023C04B28/00C04B2111/29C04B2201/50C04B14/02C04B18/08C04B18/141C04B18/027C04B14/062C04B24/34C04B24/18C04B24/163C04B38/10C04B24/20C04B14/047C04B24/10
Inventor 黄惠玲
Owner 深圳市东大洋建材有限公司
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