这里讲的混凝土强度快速测定法,即混凝土在密封的金属试模中热烘养护的方法。因此法从加水拌和时算起到拆模试压为止,总共只需七个小时,故称为七小时强度法。它是根据混凝土试件七小时强度与二十八天标准养护强度的关系,由前者来推算后者强度的一种方法。这个方法比以往根据三天或七天强度来推算二十八天强度要及时得多,准确性也强些;比一般方法蒸养混凝土的强度来推算二十八天强度更为准确。用一般方法蒸养的混凝土,由 Here’s a quick method for measuring the strength of concrete, that is, the concrete in the sealed metal test mold hot curing methods. Therefore, the law from the time of adding water mixing demolition mold pressure test, a total of only seven hours, it is called the seven-hour intensity method. It is based on the strength of concrete specimens seven hours and twenty-eight days of the standard strength of the relationship between the former to calculate the strength of a method. This method is much more timely and more accurate than the past, based on three days or seven days’ intensity, for twenty-eight days. It is more accurate than the conventional method of steam curing concrete to calculate the intensity of twenty-eight days. By the general method of steam curing concrete, by