Crack control method for mass concrete adopting phase-change material

Abstract

The invention provides a crack control method for mass concrete adopting a phase-change material, and belongs to the technical field of construction engineering. The crack control method is characterized by comprising steps as follows: step one, a heat exchange water circulation system is arranged in the construction position; step two, phase-change concrete is poured on a heat absorption assembly of the heat exchange water circulation system; step three, the concrete is poured, and the inner temperature of the concrete is controlled by the heat exchange water circulation system; the heat exchange water circulation system comprises the head absorption assembly and water storage pools, the heat absorption assembly comprises heat exchange water pipes and heat exchange metal sheets, the water storage pools comprise a cold water storage pool and a hot water storage pool, the heat exchange metal sheets are arranged on the heat exchange water pipes, one end of each heat exchange water pipe is connected with the cold water storage pool through a water inlet pipe, and the other end of each heat exchange pipe is connected with the hot water storage pool through a water outlet pipe. According to the crack control method for the mass concrete adopting the phase-change material, the structure is simple, the cost is low, the inner temperature of the concrete can be effectively controlled, and accordingly, concrete cracks are prevented.

Description

Technical field: [0001] The invention belongs to the technical field of construction engineering, and in particular relates to a large-volume concrete crack control method using phase change materials. Background technique: [0002] With the rapid development of my country's economy and the continuous acceleration of urbanization, large-scale buildings continue to increase. Among them, the foundations of high-rise buildings, large bridge piers, and concrete structures of caps are relatively large, and mass concrete construction is becoming more and more common. Mass concrete structure, which has the characteristics of thick structure, large volume, dense steel bars, large amount of concrete pouring, and high construction technology requirements. One of the keys to the success or failure of mass concrete structure construction is how to take practical technical measures to prevent cracks. The surface cracking of mass concrete in the construction process directly affects the ...

AI Technical Summary

Problems solved by technology

However, during the cooling process of the water pipe, the temperature gradient of the concrete close to the pipe wall is very large, which can cause considerable tensile stress, especially in the post-cooling process of the mass concrete, which may lead to serious serious problems in the upper part of the structure detached from the foundation restraint area. through the crack

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