An Electric Heating Process for Concrete Construction in Winter

A concrete and electric heating technology, applied in the construction, building structure, construction material processing and other directions, can solve the problems of a large number of electric heating belts, unusable, electric heating belt damage, etc., to achieve low heat utilization rate and speed up the progress of the project , the effect of high heating efficiency

Active Publication Date: 2017-09-05
刘明瑞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has the following defects: 1. The electric heating band is preset in the cast-in-place component, and cannot be taken out after pouring the concrete. When the concrete of the cast-in-place component is heated, a large amount of electric heating band is needed, and the cost is higher; 2. . Lay the electric heating belt in the cast-in-place component and fix it on the steel bar with a fixing belt. The electric heating belt is difficult to lay, and the position of the electric heating belt will be affected when pouring concrete; Damage occurs, and the electric heating belt cannot be repaired and cannot be used after being damaged; 4. After the electric heating belt is detected to be intact, the electric heating belt is energized, and the heating time generally takes 5 to 8 days, because the electric heating belt is fixed on the steel bar through the fixing belt In the process of heating, once the electric heating belt leaks electricity, it will bring great safety hazards

Method used

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  • An Electric Heating Process for Concrete Construction in Winter
  • An Electric Heating Process for Concrete Construction in Winter
  • An Electric Heating Process for Concrete Construction in Winter

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0030] Such as Figure 1~5 As shown, during the construction of vertical cast-in-place components such as shear wall 1 and column 2, the shear wall reinforcement and column reinforcement are bound, and the shear wall formwork and column formwork are supported. Add vertical plastic pipe 3, the lower end is sealed to prevent water ingress, and the upper end is higher than about 5 ten centimeters of formwork, preferably ten centimeters, in case ingress of water enters ash. Cut the electric heating belt 4 into several sections whose length is shorter than the vertical plastic pipe 3, seal the lower end of each electric heating belt 3 with insulating tape, and then seal it with waterproof tape, and connect the upper end of each electric heating belt 3 in parallel with a wire 6 Connect the 220 volt power supply, seal the connection between the electric heating belt 3 and the wire 6 with insulating tape, and then seal it with waterproof tape, and seal the upper end of the vertical pl...

Embodiment 2

[0045] Such as Figure 5 with Image 6 As shown, during the construction of vertical cast-in-place components such as shear wall 1 and columns, the shear wall reinforcement and column reinforcement are bound, and the shear wall formwork and column formwork are supported, and a vertical Plastic pipe 3, the lower end outlet of the vertical plastic pipe 3 exposes the formwork, and two vertical plastic pipes 3 adjacent up and down are connected through a joint 9. The electric heating belt 4 is cut into several sections whose length is shorter than the vertical plastic pipe 3, and the lower end of each electric heating belt 4 is sealed with insulating adhesive tape, and then sealed with a waterproof adhesive tape. The upper end of the electric heating belt 4 is connected with a traction rope 10, The traction rope 10 is fixedly connected to the sealing member 11 (such as a sponge, etc.) at the upper end of the electric heating belt 4, and the lead wire 6 passes through the outlet o...

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Abstract

An electric heating process for concrete construction in winter, comprising the following steps: (1) tying steel bars of cast-in-place components, supporting templates, presetting plastic pipes in the cast-in-place components and fixing the plastic pipes; (2) placing electric wires in the plastic pipes Heating belt, pouring concrete, heating the concrete by energizing the electric heating belt, so that the temperature of the concrete is kept at 5℃~15℃. The electric heating belt heats the concrete of the cast-in-place components from the inside to the outside, the surface heat loss of the cast-in-place components is small, and energy is saved; and the electric heating belt does not directly contact the concrete, let alone the steel bars, that is, to avoid damage to the electricity during the concrete pouring process. It is not easy to cause electric shock accidents.

Description

technical field [0001] The invention relates to the technical field of winter construction heating of buildings, in particular to an electric heating process for concrete winter construction. Background technique [0002] The engineering construction specification stipulates: when the daily average temperature will drop below 5°C for 5 consecutive days, the engineering construction will enter the winter construction stage, and the engineering construction must be carried out in accordance with the requirements of winter construction, the construction of walls and plastering must be stopped, and the concrete pouring construction After taking measures, it can be carried out. However, during the low-temperature condensation process of concrete, the hydration of cement is hindered, which affects the growth of concrete strength; although the strength of concrete can increase when it is frozen in the early stage, it is difficult to meet the design requirements in the later stage. ...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): E04G21/02E04G21/24E04G21/28
Inventor刘明瑞杨林林赵兴峰郑福海刘梦军赵光司凤华刘皓
Owner刘明瑞