论文部分内容阅读
作为一种应用最成功、范围最广、体量最大的建筑材料,混凝土材料与经济社会的快速发展密切相关,已成为人类社会文明的缩影与诠注。混凝土的耐久性直接关系到建筑物的服役寿命和安全。国内外由于混凝土耐久性破坏而造成的结构损毁屡见不鲜。据统计,美国混凝土基础工程的总价约为6万亿美元,但每年用于维修和重建的费用高达3000亿美元。在我国也同样存在这样的问题,混凝土路面受冻融
As one of the most successful, widest and most massive building materials, concrete material is closely related to the rapid economic and social development and has become a microcosm and annotation of human civilization. The durability of concrete is directly related to the service life and safety of the building. Structural damage caused by the destruction of concrete durability at home and abroad is not uncommon. According to statistics, the total cost of concrete infrastructures in the United States is about 6 trillion U.S. dollars, but the annual cost for repairs and reconstruction is as high as 300 billion U.S. dollars. In our country, there is the same problem, the concrete pavement is frozen and thawed