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Material for reducing cement and improving concrete strength

A concrete strength and cement technology, applied in the field of concrete, can solve problems such as impermeability, frost resistance, corrosion resistance and carbonation resistance deterioration, concrete quality not meeting the design requirements, increasing concrete shrinkage and deformation, etc. , to improve safety and anti-seepage effect, prevent alkali-aggregate reaction, and reduce cement content

Inactive Publication Date: 2021-02-19
衡阳市银利实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, the water-cement ratio is inversely proportional to the concrete strength. When the water-cement ratio remains unchanged, it is wrong to increase the amount of cement to increase the concrete strength. At this time, the workability of the concrete can only be increased, and the shrinkage and deformation of the concrete can be increased. , and the cement will cause a lot of environmental pollution problems during the preparation process. The cement industry is a large coal consumer. After coal combustion, a large amount of harmful gases such as carbon dioxide, sulfur dioxide, and nitrogen oxides are produced, causing greenhouse effect, acid rain, ozone layer destruction, and serious damage to nature. surroundings
The country's industrial policy is mainly manifested in the use of legal means to further restrict and eliminate shaft kiln cement and encourage the development of new dry process cement; implement large-scale operations and establish large-scale leading enterprises; implement sustainable development strategies and develop circular economy; but the amount of cement used If it is less, the strength of concrete will be reduced, the impermeability, frost resistance, corrosion resistance and carbonation resistance will be deteriorated, and the quality of concrete will not meet the design requirements.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A material for reducing cement and improving concrete strength, comprising the following raw materials in parts by weight: 5-10 parts of wood calcium, 3.5-6 parts of phenol, 20 parts of sodium methacrylate sulfonate, 20 parts of microsilica, hydroxypropyl 8-15 parts of methyl cellulose, 7 parts of bentonite, 10 parts of cyclohexane, 10 parts of defoamer, 4 parts of water reducing agent.

[0019] In this implementation, the defoaming agent is one or a mixture of two or more of tributyl phosphate, polyoxypropylene glyceryl ether, and emulsified silicone oil.

[0020] In this implementation, the bentonite is sodium-based bentonite.

[0021] In this implementation, the silica fume is composed of active glassy silica with a content of more than 85% and a small amount of calcium oxide, magnesium oxide, iron oxide, and aluminum oxide.

[0022] In this implementation, the model of the water reducer is JTB-101.

Embodiment 2

[0024] A material for reducing cement and improving concrete strength, comprising the following raw materials in parts by weight: 5-10 parts of wood calcium, 3.5-6 parts of phenol, 20 parts of sodium methacrylate, 0 parts of microsilica, hydroxypropyl 8-15 parts of methyl cellulose, 7 parts of bentonite, 10 parts of cyclohexane, 10 parts of defoamer, 4 parts of water reducing agent.

[0025] In this implementation, the defoaming agent is one or a mixture of two or more of tributyl phosphate, polyoxypropylene glyceryl ether, and emulsified silicone oil.

[0026] In this implementation, the bentonite is sodium-based bentonite.

[0027] In this implementation, the silica fume is composed of active glassy silica with a content of more than 85% and a small amount of calcium oxide, magnesium oxide, iron oxide, and aluminum oxide.

[0028] In this implementation, the model of the water reducer is JTB-101.

Embodiment 3

[0030] A material for reducing cement and improving concrete strength, comprising the following raw materials in parts by weight: 5-10 parts of wood calcium, 3.5-6 parts of phenol, 20 parts of sodium methacrylate, 16 parts of microsilica, hydroxypropyl 8-15 parts of methyl cellulose, 7 parts of bentonite, 10 parts of cyclohexane, 10 parts of defoamer, 4 parts of water reducer.

[0031] In this implementation, the defoaming agent is one or a mixture of two or more of tributyl phosphate, polyoxypropylene glyceryl ether, and emulsified silicone oil.

[0032] In this implementation, the bentonite is sodium-based bentonite.

[0033] In this implementation, the silica fume is composed of active glassy silica with a content of more than 85% and a small amount of calcium oxide, magnesium oxide, iron oxide, and aluminum oxide.

[0034] In this implementation, the model of the water reducer is JTB-101.

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PUM

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Abstract

The invention discloses a material for reducing cement and improving concrete strength. The material is characterized by comprising the following raw materials in parts by weight: 5-10 parts of calcium lignosulphonate, 3.5-6 parts of phenol, 20 parts of sodium methallyl sulfonate, 20-30 parts of silica fume, 8-15 parts of hydroxypropyl methyl cellulose, 7 parts of bentonite, 10 parts of cyclohexane, 10 parts of defoaming agent and 4 parts of water reducing agent. The invention relates to the technical field of concrete, and through silica fume and bentonite in the invention, the effect that the concrete needs less cement under the same strength is realized.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to a material for reducing cement and improving concrete strength. Background technique [0002] Concrete refers to the artificial stone made of cement as the main cementitious material, mixed with water, sand, stones, chemical admixtures and mineral admixtures when necessary, mixed in appropriate proportions, uniformly stirred, compacted and cured. Concrete is mainly divided into two stages and states: the plastic state before setting and hardening, that is, fresh concrete or concrete mixture; the hard state after hardening, that is, hardened concrete or concrete. [0003] One of the main indicators of concrete quality is the compressive strength. The compressive strength of concrete is directly proportional to the strength of the cement used in concrete. When the water-cement ratio is equal, the compressive strength of concrete prepared with high-grade cement is much higher than ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/42
CPCC04B40/0039C04B24/18C04B24/02C04B24/16C04B18/146C04B24/383C04B24/00C04B14/104C04B24/003C04B24/32C04B24/42C04B2103/302
Inventor 高翊杰
Owner 衡阳市银利实业有限公司