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Anti-freezing treatment method for concrete structure foundation in severe cold region

A technology of concrete structure and treatment method, which is applied in basic structural engineering, protection devices, buildings, etc., can solve the problems of using materials, preparation methods without specific regulations and quantitative index requirements, etc., and achieves frost heave thickness. It is easy to guarantee and has a good use effect. , to achieve convenient effect

Inactive Publication Date: 2012-07-18
CHINA RAILWAY FIRST GRP CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, in the design of concrete structures in severe cold regions, although the problem of anti-freeze heaving of the foundation has been raised, there are no specific regulations and quantitative index requirements for the materials used, preparation methods, etc., and asphalt oil residue is often used for anti-freezing swelling treatment

Method used

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  • Anti-freezing treatment method for concrete structure foundation in severe cold region
  • Anti-freezing treatment method for concrete structure foundation in severe cold region

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Embodiment Construction

[0030] Such as figure 1 The antifreeze treatment method for the foundation of a concrete structure in a severe cold area includes the following steps:

[0031] Step 1. Bonding layer construction: first heat the asphalt at a temperature of 100°C to 150°C until the heated asphalt is completely melted and dehydrated; after that, apply the melted and dehydrated asphalt to the treated concrete evenly with brushing equipment On the outer surface of the structure foundation, after the asphalt painted on the outer surface of the treated concrete structure foundation is cooled to form a film, a completed bonding layer is obtained.

[0032] The asphalt is an asphalt material with a penetration of 10-15 (0.1mm) at 25°C, a ductility of not less than 1.5cm at 15°C and a softening point of not less than 95°C.

[0033] When actually carrying out the construction of the bonding layer, the asphalt is first heated at a temperature of 130°C to 150°C, and the heated asphalt is completely melted ...

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Abstract

The invention discloses an anti-freezing treatment method for a concrete structure foundation in a severe cold region. The anti-freezing treatment method includes steps of 1, construction of an adhesion layer; 2, construction of a frost heaving preventing layer; and 3, backfilling of the foundation. The construction of the adhesion layer includes steps of heating asphalt to a completely melted state, dehydrating the asphalt, uniformly coating the asphalt on the outer surface of the treated concrete structure foundation, and cooling to form a membrane so that the adhesion layer is obtained. The construction of the frost heaving preventing layer includes steps of 201, stewing mixture materials of a frost heaving preventing layer, heating asphalt to a completely melted state, dehydrating the asphalt, adding asbestos powder in the asphalt, uniformly stirring the asphalt, adding talcum powder in the asphalt, and then uniformly stirring the asphalt so as to obtain the mixture materials of the frost heaving preventing layer; and 202, coating the mixture materials of the frost heaving preventing layer. The mass ratio of the asphalt, the asbestos powder and the talcum powder is 1.0+ / -0.01:0.34+ / -0.02:0.11+ / -0.02. The anti-freezing treatment method has simple steps, is low in investment cost, convenient in construction, fine in anti-freezing treatment effect, can effectively relieve or eliminate damage to the structure foundation due to frost heaving force, and increases the structure of a structure, and the frost heaving preventing quality can be guaranteed easily.

Description

technical field [0001] The invention belongs to the technical field of construction of concrete structures in severe cold regions, and in particular relates to an antifreeze treatment method for foundations of concrete structures in severe cold regions. Background technique [0002] At present, in many areas of our country, the foundation of some concrete structures is affected by frost heave, solution settlement, etc., resulting in deformation, displacement, damage of concrete structures, affecting or losing the use function of structures, and even safety accidents, thus causing great harm to the country and the people. cause great loss. Therefore, solving the problem of anti-frost heave of concrete structures and reducing or eliminating the damage and deformation of concrete structures caused by frost heave can effectively improve and enhance the safety and performance of concrete structures, which has great scientific value and practical significance. In recent years, in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D31/14
Inventor 白杨军王崇新汤勇杨义轩朱汝威张伟鹏
Owner CHINA RAILWAY FIRST GRP CO LTD
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