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Study on air-pipe cooling effect and cooling strategy of mass reinforced concrete wall
Fei Yan1, Zhenyi Luo2, Yan Geng3
1School of Civil Engineering, Hunan University of Science and Technology, Xiangtan, China. yanfei@hnust.edu.cn.
Abstract:
The artificial cooling of mass concrete during reconstruction is essential for preventing structural cracking due to hydration heat. For tanks and other mass post-tensioned prestressed concrete structures, pre-cooled air can be injected into prestressed rebar pipes to facilitate concrete cooling. This air-pipe cooling method eliminates the need for special cooling pipes embedded within the concrete. Thermos-fluid-solid coupling finite element (FE) models were used to assess the temperature distribution and cracking risk in mass concrete walls. The heat transfer coefficient at the concrete-pipe-air interface and its influence factors were researched in this paper. Multiple cooling strategies have been proposed, and comparative analyses have been conducted to identify the most effective cooling approach.
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