Construction and demolition(C&D)waste has seriously affected the ecological environment.The utilization of C&D waste resources can greatly alleviate this problem,and it is an important way to help achieve the ...Construction and demolition(C&D)waste has seriously affected the ecological environment.The utilization of C&D waste resources can greatly alleviate this problem,and it is an important way to help achieve the goal of zero carbon in 2050.In this study,insulation concrete blocks were developed with recycled aggregates,cement,fly ash as main raw materials,expanded polystyrene(EPS)insulation boards as block insulation filling material,and selfdeveloped construction waste composite activator,interface enhancer,surface modifier and other additives.Through experimental research and performance test analysis,the best mix ratio of the product and the mechanism of each additive were proved.The experimental results showed that the insulation concrete block prepared under the conditions of recycled aggregates sand ratio of 45%,active activator Na_(2)SO_(4)content of 0.15%and fly ash content of 30%has the best performance and meets the relevant standards.展开更多
The urban regeneration lies on closed loops of energy,materials,information.The aim of case study is to evaluate and support policies of urban regeneration.The topic of the study is the control of waste flow made by t...The urban regeneration lies on closed loops of energy,materials,information.The aim of case study is to evaluate and support policies of urban regeneration.The topic of the study is the control of waste flow made by the C&D(construction&demolition)activities involving the urban district.Each building produces a continuous flow of wastes during its predicted service life.This flow is mainly due to small building sites that generate small amount of wastes.In this way the collection,recycle and reuse material can be less accurate.In a regeneration perspective the reused and/or recycled part must be maximized.The study develops a GIS(geographic information system)based model for the assessment of the maintenance workloads of wastes produced.Coming from the data available by the public authorities and the survey on sites,the research group has carried out evaluation of the amount of wastes for building envelope,interior refurbishment of apartments,roads and parking lots.The output is a raw estimation of the C&D wastes by the maintenance and refurbishment of an urban district in Turin based on real evaluation of works needed.展开更多
基金This work was supported by Science and technology project of housing and urban-rural Development Department of Shandong Province(2018)and Shandong Provincial Social Science Planning Research Project(20CGLJ13).
文摘Construction and demolition(C&D)waste has seriously affected the ecological environment.The utilization of C&D waste resources can greatly alleviate this problem,and it is an important way to help achieve the goal of zero carbon in 2050.In this study,insulation concrete blocks were developed with recycled aggregates,cement,fly ash as main raw materials,expanded polystyrene(EPS)insulation boards as block insulation filling material,and selfdeveloped construction waste composite activator,interface enhancer,surface modifier and other additives.Through experimental research and performance test analysis,the best mix ratio of the product and the mechanism of each additive were proved.The experimental results showed that the insulation concrete block prepared under the conditions of recycled aggregates sand ratio of 45%,active activator Na_(2)SO_(4)content of 0.15%and fly ash content of 30%has the best performance and meets the relevant standards.
文摘The urban regeneration lies on closed loops of energy,materials,information.The aim of case study is to evaluate and support policies of urban regeneration.The topic of the study is the control of waste flow made by the C&D(construction&demolition)activities involving the urban district.Each building produces a continuous flow of wastes during its predicted service life.This flow is mainly due to small building sites that generate small amount of wastes.In this way the collection,recycle and reuse material can be less accurate.In a regeneration perspective the reused and/or recycled part must be maximized.The study develops a GIS(geographic information system)based model for the assessment of the maintenance workloads of wastes produced.Coming from the data available by the public authorities and the survey on sites,the research group has carried out evaluation of the amount of wastes for building envelope,interior refurbishment of apartments,roads and parking lots.The output is a raw estimation of the C&D wastes by the maintenance and refurbishment of an urban district in Turin based on real evaluation of works needed.
