碾压混凝土压实容重的检测及控制

Checking and Controlling of Compacted Density of Roller Compacted Concrete

利用核子密度仪进行碾压混凝土压实容重的检测及控制，在山西省汾河二库大坝得以很好应用，取得显著效果。

In this paper,that the noticeable effect has been obtained by using the nuclear density meter for checking and controlling of compacted density of roller compacted concrete in the Fenhe Reservoir Ⅱ is introduced. The following contents are mainly included:instrument,preparation(such as rating)before using the instrument(nuclear density meter)and checking and controlling the compacted density. The relation between lasting time of measuring and error in measurement of the instrument was given through comparative test for selecting the measuring time in site,neither long nor short. For quality controlling,the upper limit and the lower limit of the compacted density were also calculated.