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混凝土壩的冷却,随着我国水利建设的发展,逐渐成为施工中的一个重点问题。作者在有关埋设水管冷却一文(参考资科1)中,曾指出近十余年来世界各国筑壩的趋势是较多的采用在混凝土拌制成熟料前对拌和水及骨料的预冷,与局部采用埋设水管冷却相配合。我国近几年的水壩建设,从佛子嶺壩夏季施工中对砂石料喷水降温及拌和水内加冰(在气温34°～38℃,水温29°～33℃时加冰,将水温降至14°～22℃,使混凝土的出机和入仓温度,由不作上述措施的32°～34℃,降至28°～31℃)开始预冷,到最近
Concrete dam cooling, with the development of China’s water conservancy construction, has gradually become a key issue in construction. In the paper on cooling of buried pipes (Ref. 1), the author pointed out that the trend of dams in various countries in the world in the past decade or so has been more pre-cooled with mixing of water and aggregate before the concrete is used to process clinker , And local use of embedded water pipe cooling match. During the dam construction in recent years in our country, the cooling of sand and gravel water and ice in the mixing water during the summer construction of Foziling Dam (ice is added when the temperature is between 34 ° C and 38 ° C and the water temperature is between 29 ° C and 33 ° C) To 14 ° ~ 22 ℃, so that the concrete out of the machine and warehousing temperature, from 32 ° ~ 34 ℃ do not make the above-mentioned measures, down to 28 ° ~ 31 ℃) began to pre-cooling, to the nearest