随着建筑物不断向高层的发展,其基础结构也随之增大,为减小结构截面和自重,必须采用高性能混凝土(如北海国贸大厦、香格里拉大饭店、怡海大厦、海洋石油大厦、国际金融大厦、中玉大酒店、海富大厦等)。配制高性能混凝土因水泥用量较大,势必增加混凝土收缩,结构可能受到破坏。有关规范对普通混凝土最大伸缩缝间 With the continuous development of high-rise buildings, the basic structure also increases. In order to reduce the structural cross-section and self-weight, high-performance concrete (such as Beihai International Trade Building, Shangri-La Hotel, Yihai Building, Offshore Oil Building, International Finance Building, Zhongyu Hotel, Haifu Building, etc.). The preparation of high performance concrete due to the larger amount of cement is bound to increase the shrinkage of concrete, the structure may be damaged. Relevant norms on the general expansion joints between the largest concrete