To evaluate the durability characteristics of low permeable concrete using ground granulated blast-furnace slag with fineness 4,650 cm2/g, carbonation depth was measured. From the test results, persisting period of that was calculated. And it was found that carbonation depth of concrete was proceed 29.5 mm for 100 years.

• 송태협(한국건설기술연구원 연구위원, 공학박사) | Song, Tae Hyeob
• 박지선(한국건설기술연구원, 전임연구원, 박사수료) | Park, Ji Sun 교신저자