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Chemical curing agent for maintaining concrete product and maintaining method

A technology of concrete products and curing agents, applied in the field of chemical curing agents, can solve problems such as unsatisfactory technical and application requirements, and achieve the effects of improving compactness and mechanical properties, improving mechanical properties and durability, and enhancing bonding performance

Active Publication Date: 2014-05-21
北京联绿技术集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the concrete products obtained by using the existing curing treatment methods have more or less defects in different aspects such as cracking tendency, mechanical properties, durability, volume stability and production cost, especially cannot meet the requirements of today's concrete products to deal with industrial waste. technology and application requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) The composition of the chemical curing agent I for concrete products: by weight percentage, including 90% aluminum sulfate crystals and 10% red mud;

[0018] (2) Before using the chemical curing agent, temporarily mix 90% aluminum sulfate crystals and 10% red mud, and prepare and use it every day according to the consumption.

[0019] (3) Conservation of concrete products:

[0020] Heat the chemical curing agent I at 770°C heat source in the curing room, after the chemical curing agent I forms a uniform steam atmosphere, put the demoulded C50 concrete product into the curing room, and obtain the finished concrete product after curing; compare using the chemical curing of the present invention And do not use the different manufacturing method of chemical curing, measure and use the concrete product flexural strength of chemical curing of the present invention to improve from 8 MPa to 10 MPa, improve about 25%; The volume change of concrete reduces to 0.00015% from 0....

Embodiment 2

[0022] (1) The composition of the chemical curing agent II for concrete products: by weight percentage, including 70% aluminum sulfate crystals and 30% red mud;

[0023] (2) Before using the chemical curing agent, temporarily mix 70% aluminum sulfate crystals and 30% red mud, and prepare and use it every day according to the consumption.

[0024] (3) Conservation of concrete products:

[0025] Put the C50 concrete product prepared by iron ore tailings sand for demoulding into the curing room, compare the different manufacturing methods using chemical curing of the present invention and not using chemical curing, and record the flexural strength of the concrete product using chemical curing from 5 MPa Increase to 8 MPa, an increase of about 60%; the volume change of concrete products decreased from 0.00064% to 0.00035%, about 45%; the carbonation depth of concrete products decreased from 0.4cm to 0.23cm, about 43%.

Embodiment 3

[0027] (1) The composition of the chemical curing agent III for concrete products: by weight percentage, including 80% aluminum sulfate crystals and 20% red mud;

[0028] (2) Before using the chemical curing agent, temporarily mix 80% aluminum sulfate crystals and 20% red mud, and prepare and use it every day according to the consumption.

[0029] (3) Conservation of concrete products:

[0030] The demoulding 10MPa concrete product prepared with coal gangue is put into the curing room, and the different manufacturing methods using chemical curing of the present invention and not using chemical curing are compared, and the flexural strength of the concrete product using chemical curing is improved from 3 MPa to 4.6 MPa, an increase of about 53%; the compressive strength of concrete products increased from 10.2 MPa to 11.5 MPa, an increase of about 13%, and the volume change of concrete decreased from 0.00029% to 0.00014%, about 52%. The carbonation depth of concrete products i...

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Abstract

The invention provides a chemical curing agent for maintaining a concrete product. The chemical curing agent is prepared from the following raw materials by weight percent: 70-90% of aluminum sulfate crystal and 10-30% of red mud. By adopting the chemical curing agent disclosed by the invention, the maintenance effect of the concrete product can be further significantly improved on the basis of the prior art. A maintaining method of the concrete product of applying the chemical curing agent is also provided by the invention. By adopting the method, the mechanical property and the durability of the concrete product prepared from industrial waste can be obviously improved.

Description

technical field [0001] The invention relates to a chemical curing agent for curing concrete products and a curing method. Background technique [0002] At present, concrete products are widely used, and the research on using concrete products to treat industrial waste has received extensive attention. However, concrete products have a high tendency to crack, low performance indicators of concrete products made of industrial waste, poor volume stability of concrete products, and low durability in use, which greatly limit their application in concrete engineering. [0003] Experiments and research data at home and abroad show that the performance of concrete products will be improved to a certain extent after reasonable maintenance treatment. At present, the production and maintenance methods of concrete products at home and abroad mainly include: adding water curing method, spraying waterproof film curing method, covering straw mat, plastic film curing method, steam curing m...

Claims

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Application Information

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IPC IPC(8): C04B22/14C04B40/00
Inventor 王建黔尚百雨马雪英李建勇程东惠
Owner 北京联绿技术集团有限公司