Nondestructive test & Assessment Ⅳ

[1315] EFFECTS OF INNER MOISTURE OF COVERCRETE ON SURFACE WATER ABSORPTION TEST AND AIR PERMEABILITY TEST

Van Toan NGO¹, Akira HOSODA², Satoshi KOMATSU², Norihiro IKAWA³ (1.Yokohama National University, 2.横浜国立大学, 3.Hachiyo Consultant Company)

Keywords:air permeability、moisture content、relative humidity、Surface Water Absorption Test、含水率、相対湿度、表面吸水試験、透気試験

Effects of moisture content in many kinds of moisture profiles of concrete on Surface Water Absorption Test (SWAT) and on Torrent air permeability test were investigated. Moisture content was measured by two surface moisture meters, and electric resistance was measured by embedded sensors at several depths. It was found in some cases that water absorption resistance p600 and air permeability kT showed smaller values though the surface moisture content was small enough, which might have been due to inner high moisture content.