Heating apparatus enabling convenience for winter concrete construction

Abstract

A heating apparatus enabling convenience for winter concrete construction comprises a water tank, a heater and an automatic water supplement valve are arranged inside the water tank, a water outgoing line and a water return line are mounted outside the water tank, both connections of the water outgoing line and water return line with the water tank are fitted with check valves, the connection of the water outgoing line with the water tank is further provided with a water pump, at least one branch pipe is mounted between the water outgoing line and the water return line, one end of every branch pipe is connected to the water outgoing line through a water incoming valve, the other end of every branch pipe is connected to the water return line through a water return valve, and the middle of each branch pipe is bent into a position where concrete will be poured. In the pre-curing period of concrete, cement hydration is accelerated by heating the inside of the concrete, hydration heat of the concrete is maintained, concrete strength is promoted to rise above anti-freezing critical strength quickly, and the concrete is protected from freezing damage; early strength of the concrete is effectively improved, a forceful guarantee is provided for engineering quality, maintenance time is shortened, construction progress is quickened, and maintenance cost is saved.

Description

technical field [0001] The invention belongs to the technical field of concrete construction, in particular to a heating device for concrete construction in winter, which is used for concrete maintenance in winter construction. Background technique [0002] Concrete for winter construction is a general term for construction concrete in cold climates. According to the relevant regulations in the current national standard "Winter Construction Regulations for Construction Engineering" (JGJ104.97): According to the local temperature data for many years, the daily average outdoor temperature has been stably lower than When the temperature is 5°C, winter construction measures should be taken for concrete structure engineering, and antifreeze measures should be taken in time for the sudden drop in temperature. Construction in any season in northern areas and high altitude areas can be called winter construction concrete as long as the above conditions are met. Concrete maintenance...

AI Technical Summary

Problems solved by technology

Such methods that have been applied in the industry all transfer heat through air and steam on the concrete surface. Compared with water heating, due to the small specific heat capacity of the medium, the heat exchange through air is far less energy efficient than water.

Moreover, the thermal conductivity of concrete is poor, and it is difficult to control the overall temperature of concrete from external heating, which may cause internal stress due to temperature gradients generated by internal and external temperature differences, affecting the durability of components

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