Automatic air-cooling system for early-age crack control in concrete. Issue 5 (24th October 2018)

• Record Type: Journal Article
• Authors: Li, Xiongyan; Geng, Yan; Xue, Suduo; Li, Jinguang; Song, Yanjie; Kang, Guangbo
• Is Part Of: Proceedings of ICE. Volume 172:Issue 5(2019)
• Page Start: 58
• Page End: 64
• Publication Date: 2018-10-24
• Subjects: concrete technology & manufacture -- field testing & monitoring -- thermal effects; Civil engineering -- Periodicals; 624
• DOI: 10.1680/jcien.18.00036
• Languages: English
• ISSNs: 0965-089X

Abstract

Abstract : Early-age heat-induced cracking is a potentially fatal problem for critical concrete structures such as liquefied natural gas storage tanks. This paper reports on a novel automatic air-cooling system designed to solve the problem. The system was designed following a series of air-cooling experiments in China on concrete walls during the first 72 h after casting. An air velocity of approximately 12 m/s appears to provide effective cracking control for ambient air temperatures up to 30°C, while the optimal cooling segment length was found to be approximately 14 m. The paper aims to provide a reference for the application of air cooling for any large-scale concrete structures at risk of early-age cracking.