现场砼检测中“行标”和“地标”的差异

Analysis of the Differences between the Trade Criteria and the Local Criteria in the On-the-spot Concrete Test

现场砼回弹法测强中，国家行业标准和江苏省地方标准存有不同，故而分析了地标在应用中的不足之处，并建议“地标”在修订时，对均方差规定一个限值，以便公正、合理地推定砼强度。

Admittedly, there are differences between the Trade standard of China and the Local standard of Jiangsu province in testing concrete compressive strength by Rebound Method. In this paper, with some live examples analyzed, the disadvantages of the local standard in actual application are pointed out. This paper also suggests that when revising the local standard, there should be a limit formulated for standard deviation to determine the concrete compressive strength reasonably.