CAJ | 학술논문

研究了不同养护制度对超高性能纤维增强水泥基复合材料（ UHPFRCC）微观结构和宏观性能的影响，并揭示了用不同的养护制度制备性能符合要求的超高性能纤维增强水泥基复合材料的可能性。制备了一种基准的UHPFRCC，研究了3种养护制度下UHPFRCC的力学性能及短期耐久性能。此外，通过结合运用电子扫描电镜（ SEM）和压汞法（ MIP），测试了3种养护制度下UHPFRCC的微观结果。研究结果揭示了不同的养护制度对UHPFRCC微观结构的影响以及微观结构对材料宏观性能的影响机制。热养护和蒸汽养护3 d与标准养护90 d的UHPFRCC具有相近的力学性能和耐久性。但是，热养护的UHPFRCC具有相对较差的抗氯离子渗透性能。
연구료불동양호제도대초고성능섬유증강수니기복합재료（ UHPFRCC）미관결구화굉관성능적영향，병게시료용불동적양호제도제비성능부합요구적초고성능섬유증강수니기복합재료적가능성。제비료일충기준적UHPFRCC，연구료3충양호제도하UHPFRCC적역학성능급단기내구성능。차외，통과결합운용전자소묘전경（ SEM）화압홍법（ MIP），측시료3충양호제도하UHPFRCC적미관결과。연구결과게시료불동적양호제도대UHPFRCC미관결구적영향이급미관결구대재료굉관성능적영향궤제。열양호화증기양호3 d여표준양호90 d적UHPFRCC구유상근적역학성능화내구성。단시，열양호적UHPFRCC구유상대교차적항록리자삼투성능。
This study investigates the influence of different curing regimes on the microstructure and macro properties of ultra-high performance fiber reinforced cementitious composite UHPFRCC and aims to discover whether it is possible to produce qualified UHPFRCC using different curing regimes. A control mix of UHPFRCC is prepared.The mechanical performance and the short-term durability of the UHPFRCC matrix under three curing regimes are studied.In addition the microstructures of the UHPFRCC matrix with different curing conditions are analyzed by combining scanning electron microscopy SEM and mercury intrusion porosimetry MIP . The results explore how different UHPFRCC curing regimes affect its microstructure and how the microstructure affects its macro behavior.Heat and steam curing for 3 d is succeeded to produce the UHPFRCC with nearly the same mechanical properties and durability as those of the 90 d standard curing. However the heat cured UHPFRCC does not show great resistance to chloride-ion penetration.