快速评定新拌混凝土的质量能否达到原设计的要求,是混凝土质量管理当中一个十分重要的环节。正确测出水灰比,不仅可以避免在工程建设中发生混凝土质量事故,而且还可以在保证工程质量的前提下节省水泥。因此,近年来国内外很多科研人员都在积极地进行这方面的研究。其方法大体可分为物理法和化学法两种。其中,物理法难以消除粉料和外掺粉煤 Rapid assessment of the quality of fresh concrete can meet the original design requirements, concrete quality management is a very important link. Proper detection of water-cement ratio, not only to avoid the occurrence of concrete quality accidents in the construction, but also to ensure the quality of the project under the premise of saving the cement. Therefore, in recent years, many researchers at home and abroad are actively carrying out research in this area. The method can be divided into two kinds of physical and chemical methods. Among them, the physical method is difficult to eliminate the powder and mixed with pulverized coal