This study investigated the effect of surface water on concrete substrate on adhesive strength in tension of very high flowable SBR-modified cement mortar. Polymer cement ratio(P/C) were 10, 20, 30, 50 and 75% and the weight ratio of fine aggregate to cement were 1:1 and 1:3. The specimens obtained with different P/C and C:F were characterized by unit weight, flow test, crack resistance and adhesion test. Three selected specimens among these tested specimens were studied about the effect of surface water evenly sprayed on concrete substrate on adhesive strength.

• 김두기(군산대학교 토목공학과 교수, 공학박사, 기술사) | Kim, Dookie
• 도정윤(군산대학교 환경건설연구소 연구교수, 공학박사) | Do, Jeongyun