The objective of this study is to explore the physical and mechanical behaviour of concretes comprising four different ratios of recycled fine(RF),namely(5%,10%,15%and 20%)along with that of a reference concrete(Cref-...The objective of this study is to explore the physical and mechanical behaviour of concretes comprising four different ratios of recycled fine(RF),namely(5%,10%,15%and 20%)along with that of a reference concrete(Cref-0%),under three different heating-cooling cycles(200℃,400℃ and 600℃).The thermal properties of concrete during heating and cooling(20℃-600℃-20℃)were also investigated.It was determined that the physical properties(mass loss and ethanol porosity)of recycled concrete(RC)with 5%of recycled fine(RC-5%)were similar to those of Cref-0%.At ambient temperatures,the higher the ratio of recycled fines,the lower the residual compressive strength and residual elastic modulus of the recycled concrete.After thermal loading at 600℃,the residual mechanical properties of all types of concrete were equivalent,regardless of the content recycled fine.展开更多
基金funded by Pack Ambition International(PAI)of the Rhône-Alpes and Auvergne Region,FRANCE.
文摘The objective of this study is to explore the physical and mechanical behaviour of concretes comprising four different ratios of recycled fine(RF),namely(5%,10%,15%and 20%)along with that of a reference concrete(Cref-0%),under three different heating-cooling cycles(200℃,400℃ and 600℃).The thermal properties of concrete during heating and cooling(20℃-600℃-20℃)were also investigated.It was determined that the physical properties(mass loss and ethanol porosity)of recycled concrete(RC)with 5%of recycled fine(RC-5%)were similar to those of Cref-0%.At ambient temperatures,the higher the ratio of recycled fines,the lower the residual compressive strength and residual elastic modulus of the recycled concrete.After thermal loading at 600℃,the residual mechanical properties of all types of concrete were equivalent,regardless of the content recycled fine.
