据国外期刊报导,第二届国际混凝土冬季施工讨论会于1975年10月14～16日在莫斯科召开。讨论会由国际材料和结构试验研究协会主持,会上就以下4个专题进行讨论和交流:1.负温条件下混凝土凝结和硬化的机制;2.冰冻对混凝土不同龄期物理力学性质的影响;3.对结构物不采取人工加热时混凝土和钢筋混凝土的施工方法; According to foreign journals, the second International Concrete Winter Construction Seminar was held in Moscow from October 14th to 16th, 1975. The seminar was chaired by the International Association for Materials and Structural Testing and Research. The following four topics were discussed and exchanged: 1. The mechanism of concrete coagulation and hardening under negative temperature conditions; 2. The effect of freezing on the physical and mechanical properties of concrete at different ages 3. The construction method of concrete and reinforced concrete when the structure is not artificially heated;