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Chloride ion permeation resistant concrete and construction method thereof

A chloride ion penetration and concrete technology, which is applied in the processing of building materials, construction, building construction, etc., can solve the problems of durability only considering the (water) penetration level, different technical levels, and different control methods. To achieve the effect of improving the anti-chloride ion penetration performance, improving the overall strength, and improving the impermeability

Active Publication Date: 2020-07-14
浙江广天构件集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current raw materials of ready-mixed concrete have different sources, different technical levels, and different control methods. As the main control index, most of them only consider the single index of (water) penetration resistance in terms of durability.

Method used

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  • Chloride ion permeation resistant concrete and construction method thereof
  • Chloride ion permeation resistant concrete and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of concrete resistant to chloride ion penetration. The raw materials include the following components in parts by weight: 260 parts of cement, 70 parts of fly ash, 60 parts of mineral powder, 680 parts of yellow sand, 1080 parts of crushed stone, 150 parts of water, and silica fume 20 parts, 7 parts of water reducing agent, 10 parts of compacting agent; 2 The mass percentage is 99wt%, Al 2 o 3 The mass percentage is 0.5wt%, and the specific surface area is 25000-28000m 2 / kg; the compacting agent is a mixture of 20wt% nano cerium oxide, 20wt% nano magnesia, and 60wt% zirconium dioxide; the water reducer is a mixture of polycarboxylate, casein, acrylic acid, The mass ratio is 3:2:1.

[0031] The concrete in this example is prepared by the following method: first add yellow sand and part of the crushed stone to the mixer for mixing, then add cement, fly ash, mineral powder, compacting agent, microsilica fume and mix together, then add water and water reducer to ...

Embodiment 2

[0034] A kind of concrete resistant to chloride ion penetration. The raw materials include the following components in parts by weight: 260 parts of cement, 70 parts of fly ash, 60 parts of mineral powder, 680 parts of yellow sand, 1080 parts of crushed stone, 150 parts of water, and silica fume 20 parts, 7 parts of water reducing agent, 10 parts of compacting agent; 2 The mass percentage is 96wt%, Al 2 o 3 The mass percentage is 2wt%, and the specific surface area is 25000-28000m 2 / kg; the compacting agent is a mixture of 30wt% nano cerium oxide, 10wt% nano magnesia, 60wt% zirconium dioxide; the water reducer is a mixture of polycarboxylate, casein, acrylic acid, The mass ratio is 3:2:1.

[0035] The concrete in this example is prepared by the following method: first add yellow sand and part of the crushed stone to the mixer for mixing, then add cement, fly ash, mineral powder, compacting agent, microsilica fume and mix together, then add water and water reducer to contin...

Embodiment 3

[0038] A kind of concrete resistant to chloride ion penetration. The raw materials include the following components in parts by weight: 260 parts of cement, 70 parts of fly ash, 60 parts of mineral powder, 680 parts of yellow sand, 1080 parts of crushed stone, 150 parts of water, and silica fume 20 parts, 7 parts of water reducing agent, 10 parts of compacting agent; 2 The mass percentage is 98wt%, Al 2 o 3 The mass percentage is 0.5wt%, and the specific surface area is 25000-28000m 2 / kg; the compacting agent is a mixture of 20wt% nano cerium oxide, 10wt% nano magnesia, 70wt% zirconium dioxide; the water reducer is a mixture of polycarboxylate, casein, acrylic acid, The mass ratio is 3:2:1.

[0039] The concrete in this example is prepared by the following method: first add yellow sand and part of the crushed stone to the mixer for mixing, then add cement, fly ash, mineral powder, compacting agent, microsilica fume and mix together, then add water and water reducer to cont...

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Abstract

The invention belongs to the technical field of concrete building materials, and particularly relates to chloride ion permeation resistant concrete and a construction method thereof. The raw materialsof the chloride ion penetration resistant concrete comprise the following components in parts by weight: 250-280 parts of cement, 50-80 parts of fly ash, 50-60 parts of mineral powder, 620-700 partsof yellow sand, 1000-1200 parts of crushed stone, 120-190 parts of water, 15-28 parts of silica fume, 5-8 parts of a water reducing agent and 6-15 parts of a compacting agent. Through the filling andenhancing effects of the compacting agent and the silica fume and the adjustment of the water reducing agent and the modified fiber, the internal gap of the concrete is compactly filled, so that the chloride ion penetration resistance of the concrete is improved, the impermeability grade of the formed concrete is greater than or equal to P8, and the solid concrete is compact and smooth in surface,free of cracks and good in durability.

Description

technical field [0001] The invention belongs to the technical field of concrete building materials, and in particular relates to a chloride ion-resistant concrete and a construction method. Background technique [0002] Ready-mixed concrete is the transformation of concrete production from extensive production to intensive large-scale production. It has a relatively large advantage in the total output of concrete. At present, all housing construction projects and municipal projects use ready-mixed concrete. Ready-mixed concrete is usually cement, admixtures, aggregates, admixtures and water mixed in a predetermined proportion at the mixing station and then transported to the construction site. , The measurement is relatively accurate, but with the multi-functionalization of concrete engineering, the complexity of construction and application environment, and the optimization of resources and environment, people have put forward higher requirements for concrete materials. ...

Claims

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Application Information

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IPC IPC(8): C04B28/00E04G21/02E04G21/24
CPCC04B28/00E04G21/02E04G21/246C04B2111/00008C04B2111/20C04B2201/50C04B14/306C04B14/041C04B18/08C04B18/12C04B14/068C04B18/146C04B2103/302C04B24/122C04B22/12C04B22/08C04B22/148C04B22/085C04B22/142C04B22/06C04B22/149C04B12/04C04B22/126C04B22/066C04B22/064
Inventor 罗忠湘宋健民陈诚董伟伟
Owner 浙江广天构件集团股份有限公司
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