高炉スラグ微粉末を混入した高強度コンクリートの塩分浸透性状

―EPMAを利用した塩化物イオン濃度分布の測定―

抄録

As a part of the research on application of blast-furnace slag to prestressed concrete, chloride ion penetration of the high strength concrete used blast-furnace slag was examined paying attention to wet curing period. Besides, in order to measure detailed distribution of the chloride ion concentration, we propose an approach with EPMA technique and it compared with the former method. As the result, concrete mixed with ground granulated blast-furnace slag increased the concentration of chloride ion near the surface of concrete, but decreased its penetration to inside. Furthermore, by EPMA technique, it is possible to compute detailed distribution of chloride ion concentration and it has checked that use of EPMA was significant in the evaluation of chloride ion concentration on the surface of concrete, while there are some errors about an absolute value.