Investigation of leaching behavior of low alkaline cement in Horonobe underground water environment

Hitomi, Takashi*; Iriya, Keishiro*; Nakayama, Masashi 

In JAEA, HFSC (Highly Fly ash contained Silica-fume Cement) in which the calcium hydroxide of cement become pozzolana is developed. Dipping test with the solution which simulated groundwater environment of Horonobe was performed, and HFSC was shown as having high leaching resistance in comparison with OPC. In addition, whereas an invasion of chloride ion was seen in the whole of the sample in the OPC, in HFSC, an invasion was seen in only the part of leached area.