A construction method for pouring concrete in high-cold and high-altitude areas in winter

Abstract

The invention discloses a construction method of concrete, particularly discloses a construction method for pouring concrete in a high cold high-altitude area in winter and belongs to the technical field of civil construction design. The construction method is convenient to construct and operate and capable of conducting continuous heat preservation on poured concrete. Before pouring operation of the concrete is conducted, a layer of heat preservation layer with thickness not smaller than 2.5 cm is adhered to the inner side of an erected and qualified concrete pouring template, and then pouring, solidification and molding and heat preservation of the concrete in a follow-up curing period are conducted.

Description

technical field [0001] The invention relates to a concrete construction method, in particular to a construction method for pouring concrete in high-cold and high-altitude regions in winter, and belongs to the technical field of civil engineering construction design. Background technique [0002] In the construction of concrete engineering, the selection of thermal insulation measures is not only related to the development of the early strength of concrete, but also affects the internal temperature rise of concrete and the generation of surface cracks. If the thermal insulation performance is insufficient, the concrete may be frozen and affect its performance. At the same time, it will cause rapid water loss and dry shrinkage cracks; if the thermal insulation performance is too high, the maximum temperature of the concrete will rise, and it may suffer from "cold shock" during formwork removal. temperature cracks. However, in high-cold and high-altitude areas, winter generall...

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Problems solved by technology

[0004] This method is more commonly used in general areas, but in winter construction in high-cold and high-altitude areas, it is difficult to ensure the insulation effect of the insulation coil or insulation on the upper surface of the concrete germ layer. The loss is relatively serious, and rain, snow and construction water are easy to seep into the formwork, forming ice when the temperature is extremely low at night or when the temperature drops suddenly, destroying the performance of concrete and forming concrete defects; The method is time-consuming, labor-intensive and less safe. At the same time, from the removal of the formwork to the completion of pasting the thermal insulation material, the thermal insulation is not continuous during this process, and it is easy to cause the concrete to suffer from "cold shock" and cause cracks