在混凝土施工中,时常会出现一些质量问题。如何检测混凝土强度等指标,并力求检测方法的科学性与准确性,一直为技术人员所关注。本文就中国金融大厦的工程实例,介绍超声——回弹综合法及超声脉冲穿透法等混凝土检测方法,以供参考。 大厦第27层框架混凝土浇筑后,发现在第28层楼板表面浮有小块腐烂木块,小木块是混在砂子中进入的,数量虽很少,但是否会对混凝土强度产生 In concrete construction, there are often some quality problems. How to detect concrete strength and other indicators, and strive to test the scientific and accuracy of the method, has been of concern to the technical staff. In this paper, the concrete examples of the China Financial Building are introduced, and the concrete methods such as ultrasonic-rebound springback method and ultrasonic pulse penetration method are introduced for reference. After the concrete of the 27th floor of the building was poured, it was found that small pieces of rotted wood were floating on the surface of the 28th floor slab. The small wooden blocks were mixed in the sand, but the amount was very small, but it would produce concrete strength.