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알칼리 자극제 혼입 고로슬래그 미분말의 공극구조 및 미소수화열 분석
박지웅 ( Park Ji-woong ),박희곤 ( Park Hee-gon ),김우재 ( Kim Woo-jae ),이건철 ( Lee Gun-cheol ) 한국건축시공학회 2017 한국건축시공학회 학술발표대회 논문집 Vol.17 No.2
In this study, fundamental properties by pore structure and heat of microhydration test were determined. As a result of pore structure analysis, BS(AA) specimen showed showed the maximum peak value of significantly lower incremental intrusion than the maximum peak value of incremental intrusion at smaller pore size than that of BS. As a result of heat of microhydration test, the maximum heating value was in the order of OPC > BS > BS(AA), and initial drying shrinkage and compressive strength of BS(AA) were expected to be improved.
박용규 ( Park Yong-kyu ),주은희 ( Joo Eun-hi ),이건철 ( Lee Gon-cheol ),변항용 ( Byun Hang-yong ),우종완 ( Woo Jong-wan ),한천구 ( Han Cheon-goo ) 한국구조물진단유지관리공학회 2005 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.9 No.2
This study investigates the strain properties of cement mortar and concrete. The test showed the elasticity modulus of cement mortar indicated 1.6~2.6(×10<sup>4</sup>MPa) and that of concrete exhibited 1.8~2.7(×10<sup>4</sup>MPa). The elasticity modulus became smaller, as the mixture proportion, W/C ratio and fluidity increased. The mortar exhibited two times bigger value of length strain ratio than concrete, and the increase of mixture proportion and W/C ratio resulted in growth of strain ratio. Moreover, higher shrinkage-reducing was shown, as slump flow and slump increase. Thermal expansion coefficients of mortar was 10~13.4με/℃ and that of concrete was 9~11με/℃, respectively. An increase of mixture proportion and W/C ratio provided the high thermal expansion coefficients, but increase of slump flow and slump did not possibly affect the thermal expansion coefficients.
박용규(Park Yong-Kyu),주은희(Joo Eun-Hi),이건철(Lee Gon-Cheol),변항용(Byun Hang-Yong),우종완(Woo Jong-Wan),한천구(Han Cheon-Goo) 한국구조물진단유지관리학회 2005 한국구조물진단학회 학술발표회논문집 Vol.9 No.2
This study investigates the strain properties of cement mortar and concrete. The test showed the elasticity modulus of cement mortar indicated 1.6~2.6(×10⁴㎫) and that of concrete exhibited 1.8~2.7(×10⁴㎫). The elasticity modulus became smaller, as the mixture proportion, W/C ratio and fluidity increased. The mortar exhibited two times bigger value of length strain ratio than concrete, and the increase of mixture proportion and W/C ratio resulted in growth of strain ratio. Moreover, higher shrinkage-reducing was shown, as slump flow and slump increase. Thermal expansion coefficients of mortar was 10~13.4με/℃ and that of concrete was 9~11με/℃. respectively. An increase of mixture proportion and W/C ratio provided the high thermal expansion coefficients, but increase of slump flow and slump did not possibly affect the thermal expansion coefficients.