论文部分内容阅读
混凝土和钢筋混凝土结构施工中,常会遇到混凝土强度的换算和推算问题。现介绍其常用方法。一、混凝土强度的换算如已知混凝土的 nd 强度,需要推算28 d 标准龄期的强度,或另一个龄期的强度等;或已知标准养护28 d龄期的强度,需要推算出 nd龄期的强度等。由大量的试
Concrete and reinforced concrete construction, often encounter the conversion and calculation of concrete strength problems. Now introduce its common method. First, the conversion of concrete strength Known concrete nd strength, the need to calculate the 28-day standard age strength, or another age strength; or known standard conservation 28d age strength, need to calculate the age of nd Period of intensity and so on. By a large number of tests