Auxiliary curing method for cold weather concrete by electric heating tapes

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...

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 not lower than 5°C. Influenced by factors such as high height and large components, it is more and more inconvenient to use on site

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