An Experimental Study on the Effects of Polycarboxylate Superplasticizer on the Fluidity Properties of Cement Pastes with POFA

POFA를 혼입한 시멘트 페이스트의 유동특성에 폴리카르본산계 감수제가 미치는 영향에 관한 실험적 연구

Palm Oil Fuel Ash(POFA),which is burned in palm oil factories to get energy and gathered, has been studied in many countries due to its chemical properties. However POFA has high value of LOI and lots of pores on its particle surface. Therefore, in this study, POFA's fluidity were confirmed by mini-slump test and plastic viscosity test. Through the results, fluidity of POFA reduced according to the replacement ratio of POFA because of high value of LOI and its pores on surface and plastic viscosity of POFA increased. In addition, when superplasticizer was added, fluidity increased due to the steric effect of polycarboxylate superplasticizer.