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一、混凝土以至一切水泥基材料具有下列显著特征1.混凝土是当代最大宗人造材料。混凝土建筑物年投资远远超过2千亿美元(1978年美国统计)。2.本世纪以来有大量实践经验与科技成果,尤以50～70年代发展较快,至今仍拥有较大的科技力量。3.亟待解决的混凝土科学技术问题很多,尤其是耐久性问题,带来的损失与生产中的浪费均属惊人,影响很大而且持久。
1. Concrete and all cement-based materials have the following distinctive features: 1. Concrete is the largest manmade material in the world. The annual investment in concrete buildings is far in excess of 200 billion U.S. dollars (Statistics of the United States, 1978). 2. Since the beginning of this century, there have been a lot of practical experiences and scientific and technological achievements, especially in the 50s and 70s, and they still have large scientific and technological forces. 3. There are many concrete problems in concrete science and technology that need to be solved. In particular, durability issues, losses caused by production and wastes in production are all striking and have great impact and are long-lasting.