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五钠土建工程中,混凝土、钢筋混凝土的工程量浩大,且多数用在比较重要的结构部位.因此,对混凝土的合格条件掌握好坏,是对我厂土建工程作出正确验收评价的关键之一.1979年,国家建工总局对10个省市的混凝土强度进行了统计调查,参加调查的单位有77个,取得统计资料473份,得到的结论是;施工现场的混凝土约有30%属于不合格的劣等混凝土.”说明问题相当严重.
In the five-sodium-soil civil engineering project, the concrete quantities and reinforced concrete projects are vast, and most of them are used in more important structural parts. Therefore, it is one of the keys to the correct acceptance evaluation of the civil engineering works of our factory that the qualified conditions of the concrete are good or bad. In 1979, the State Construction and Construction Administration conducted a statistical survey on the concrete strength of 10 provinces and cities. There were 77 participating in the survey and 473 statistical data were obtained. The conclusion is that about 30% of the concrete on the construction site is not classified. Qualified inferior concrete." The problem is quite serious.