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킬른더스트를 사용한 콘크리트의 강도 및 내구특성에 관한 연구
김기정(Kim Ki-Jeong),차천수(Lee Yong Sung),김성수(Li Bai Shou),손성운(Yoon Gi-Won),한천구(Han Cheon-Goo) 한국구조물진단유지관리학회 2003 한국구조물진단학회 학술발표회논문집 Vol.- No.-
In this study, the properties of fresh and hardened concrete, and durability are discussed when cement kiln dust is replaced for cement and fine aggregate. According to the results, slump and air content of concrete, in which CKD is used, decreases remarkably due to an increase of viscosity and filling of the pores. Compressive strength increases due to filling of the pores and reduction of air content in comparison with plain concrete. In the case of replacement of CKD for fine aggregate, drying shrinkage and neutralizing depth of concrete show the similar tendency to plain concrete, but in the case of replacement of CKD for cement, they increase in comparison with plain concrete. When CKD is used in concrete, relative dynamic elastic modulus diminishes in all case due to reduction of air content.
킬른더스트를 사용한 콘크리트의 강도 및 내구특성에 관한 연구
김기정 ( Kim¸ Ki-jeong ),차천수 ( Lee¸ Yong Sung ),김성수 ( Li¸ Bai Shou ),손성운 ( Yoon¸ Gi-won ),한천구 ( Han¸ Cheon-goo ) 한국구조물진단유지관리공학회 2003 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.7 No.1
In this study, the properties of fresh and hardened concrete, and durability are discussed when cement kiln dust is replaced for cement and fine aggregate. According to the results, slump and air content of concrete, in which CKD is used, decreases remarkably due to an increase of viscosity and filling of the pores. Compressive strength increases due to filling of the pores and reduction of air content in comparison with plain concrete. In the case of replacement of CKD for fine aggregate, drying shrinkage and neutralizing depth of concrete show the similar tendency to plain concrete, but in the case of replacement of CKD for cement, they increase in comparison with plain concrete. When CKD is used in concrete, relative dynamic elastic modulus diminishes in all case due to reduction of air content.