Auxiliary curing method for cold weather concrete by electric heating tapes

A technology of electric heating belt and concrete, applied in the direction of ceramic molding machines, manufacturing tools, etc., can solve the problems of large components, inconvenient on-site use, high number of building floors, etc., and achieve high heating efficiency, energy saving, and less heat loss.

Inactive Publication Date: 2013-06-26
THE SECOND CONSTR ENG CO LTD OF CHINA CONSTR THIRD ENG BUREAU
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  • Abstract
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AI Technical Summary

Problems solved by technology

In order to prevent early freezing damage, it is usually required that the temperature of the concrete at the beginning of curing is

Method used

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  • Auxiliary curing method for cold weather concrete by electric heating tapes
  • Auxiliary curing method for cold weather concrete by electric heating tapes

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[0015] The present invention is described in detail below in conjunction with the accompanying drawings:

[0016] like figure 1 , figure 2 As shown, a winter concrete electric heating belt auxiliary maintenance method is characterized in that it is carried out according to the following steps: (1) firstly, the formwork is supported, and after the installation of the steel bars 2 of the cast-in-place concrete member 1 and the placement of the embedded parts and the welding work, in the current Lay the self-limiting temperature electric heating belt 3 in the cast-in-place concrete member 1 and fix it on the steel bar 2 with the fixing belt; according to the size, size and structural form of the cast-in-place concrete member, evenly and continuously arrange the self-limiting temperature electric heating belt in the cast-in-place concrete member ; The self-limiting temperature electric heating belt is placed in the concrete, and it is not allowed to contact the formwork; it is n...

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Abstract

The invention relates to an auxiliary curing method for cold weather concrete by electric heating tapes. The auxiliary curing method is characterized by comprising the following steps of: (1) supporting a mould plate firstly, and paving the electric heating tapes in a cast-in-situ member and fixing the electric heating tapes on steel bars by fixing tapes after the steel bars of the cast-in-situ member are installed and an embedded part is placed and welded; and (2) pouring the concrete after the electric heating tapes are detected to be intact, covering a heat-insulating material on the surface of the cast-in-situ member, electrifying the electric heating tapes after the covering of the heat-insulating material, and heating the concrete to keep the temperature of the concrete at 5-8 DEG C. According to the auxiliary curing method disclosed by the invention, because the self-temperature-control electric heating tapes are uniformly arranged in the concrete member, the concrete can be directly and uniformly heated with high efficiency; the heating mode is from inside to outside, so that the surface heat loss of the member is less, and energy is saved; the auxiliary curing method can be used in any construction site without the influences of the heights and the sizes of buildings; and the construction is simple and safe, and is less prone to electric shock accidents.

Description

technical field [0001] The invention belongs to the technical field of building construction and relates to an electric heating belt-assisted maintenance method for concrete in winter. Background technique [0002] If the concrete is attacked by negative temperature during the setting process, the hydration of the cement will be hindered, and the free water will start to freeze, and the volume will increase by 9%, which will cause the concrete to crack and seriously affect the quality of the concrete; If it is kept at room temperature for curing, although its strength can still increase, it can no longer recover to the level that has not been damaged by freezing; and the earlier it is frozen, the more difficult it will be to recover its strength later. Therefore, adopting proper maintenance methods to prevent early freezing is the key to ensure the quality of concrete construction in winter. In order to prevent early freezing damage, it is usually required that the concrete...

Claims

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Application Information

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IPC IPC(8): B28B11/24
Inventor 刘波向晖王绍东张行军但斌
Owner THE SECOND CONSTR ENG CO LTD OF CHINA CONSTR THIRD ENG BUREAU
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