Abstract
This experimental study has been projected on the method of the pressure input type permeability test for the reinforced concrete silo. The method of this permeability test at the reinforced concrete silo being cutoff defects was verified as a proper test method on condition that the test temperature and pressure was fixed. In this study, the results of average coefficient of permeability at this reinforced concrete silo being the controling and causing cracks has been confirmed of 10-10m/s and 10-11m/s.