initial setting time การใช้

Initial setting time
Abstract : the cause of underwater concrete reinforcing cage up - floating accident is improper operation , such as loose - placement of reinforcing cage , fast - drawing of conduct pipe , improper embedded depth of conduct pipe ; and the poor quality of concrete , for example , the slump , sand percentage , adhesiveness and initial setting time don " t meet requirement
The cause of underwater concrete reinforcing cage up - floating accident is improper operation , such as loose - placement of reinforcing cage , fast - drawing of conduct pipe , improper embedded depth of conduct pipe ; and the poor quality of concrete , for example , the slump , sand percentage , adhesiveness and initial setting time don " t meet requirement
In order to study the direct relation between oil - base drilling fluid performance and cement job quality , a new developed evaluation method ( artificial core method ) was adopted ; the effects of the oil - base drilling fluid system and its main components on the shear cementing strengths of the first and second interfaces in cementing operation were investigated ; and those of the different mix slurry ratios on the gel strength , initial set time , final set time of slurry and the compressive strength of bond cement were examined too