一、概述提高工业与民用建筑结构混凝土的强度是改善建筑技术的主要方向之一,也是节约能源和资源的重要措施。根据苏联建筑经济科学研究所的研究,在承重结构中,用600号代替300～400号混凝土,可节约混凝土约40％,节约钢材约39％,降低造价20～35％。每提高强度100号,每 I. Overview Enhancing the strength of industrial and civil building structures Concrete is one of the main directions for improving building technology, and it is also an important measure for saving energy and resources. According to the study of the Soviet Institute of Building Economics, in the load-bearing structure, the use of 600 instead of 300 to 400 concrete can save about 40% of concrete, save about 39% of steel, reduce the cost of 20 to 35%. Each increase the intensity of 100, each