Three specific in- situ tests to assess the water permeability and air permeability of the surface layer of concrete were examined. Test methods for permeability are the rapid water permeability by author's method, the rapid air permeability, and rapid water absorption applying Figg's method. Experimental studies on these test method examined the influences such as distance between testing points, surface sealing, maximum size of coarse aggregate and moisture content, on specific parameters obtained in three different in-situ tests. Variations of specific parameters were also analyzed and the availability of these tests to assess the permeability of surface layer of concrete was mentioned.
