How specific surface of cement tester cylinder leak check and test material layer for volume determination ?
Author: Anonymous June 9, 2009 [ Font : Default zoom ] I want to comment
Summary :
Tags : cylinder test material layer volume determination of specific surface of cement analyzer,
A: About as follows:
A ) the instrument leak check , follow these steps :
appropriate choice of glue Pusey , with plastic Pi Sese tight cylinder port .
pumping , so that the liquid level rise , until the liquid level rises at A barometer , closing piston .
The level drops situations, such as the liquid level within five minutes did not decrease , then the instrument does not leak , you should find out the cause of leaks and sealed .
2 ) Determination of the cylindrical specimen layer volume as follows:
Test Preparation before . Ready two with the same cylinder diameter neutral density and amount of mercury qualitative filter paper .
In the cylinder placed two perforated filter plate , and the cylinder is filled with mercury, the mercury surface with a thin glass plate is flush with the cylinder port .
pour mercury weighed to the nearest 0.05 g , measured repeated several times , so that the value unchanged so far.
Remove a filter from the cylinder , the cylinder specimen by adding an appropriate amount , and then remove the cover on top of a filter paper with pokers compacted specimen layer , the pressure to the required thickness of the support ring and the cylinder side was in contact , then flattened cylinder filled with mercury , mercury poured equally weighed , measured repeated several times , until constant weight until the mercury .
calculation . Cylinder test material layer volume V is calculated as follows :
            
Where : P1- filled cylinder when pressed specimen mercury quality, g ;
      P2- loaded specimen , the full cylinder mercury quality, g ;
     - The density of mercury at the test temperature , g / cm 3 ;