液态氮冷却混凝土不是一个新鲜概念,已经提出二十多年。用这种方法生产混凝土的成套设备在意大利也用了十年多。澳大利亚从一九七四年就利用液态氮冷却混凝土,而且用于大大小小的各种工程,尤其用于河坝工程中。大家知道,冷混凝土在气候炎热或它本身温度高时,强度就减小;坍落度下降 Liquid nitrogen cooling of concrete is not a new concept and has been proposed for more than two decades. Complete sets of equipment for producing concrete in this way have also been used in Italy for more than a decade. Australia used liquid nitrogen to cool concrete since 1974, and it was used in a variety of projects, large and small, especially in river dam projects. As we all know, when cold weather is hot or its own temperature is high, the strength of the cold concrete decreases; the slump decreases.