The hot central-plant recycling(HCPR)technology has been widely concerned by researchers in pavement engineering because of its excellent economic benefits and positive environmental outcomes.Over the last few years,t...The hot central-plant recycling(HCPR)technology has been widely concerned by researchers in pavement engineering because of its excellent economic benefits and positive environmental outcomes.Over the last few years,the application of HCPR technology in highway construction and maintenance has increasingly expanded.However,despite this wider adoption,critical issues concerning the composition of raw materials and performance-influencing factors of hot central-plant recycled asphalt mixtures(HCPRAM)necessitate careful consideration and deeper understanding.Therefore,conducting a detailed interpretation and systematic analysis of each component material and performance-influencing factors holds tremendous significance for advancing the design methodology,optimizing the production process,and enhancing the overall quality and durability of HCPRAM.This paper comprehensively reviews the current state-of-the-art research pertaining to the raw material composition and the crucial factors affecting the road performance of HCPRAM.Firstly,the functionality of recycled asphalt pavement(RAP)materials,virgin asphalt,virgin aggregates,rejuvenators,and fibers in the mixtures are introduced.Then,the influencing factors of the performance of HRAM are described in detail from both internal and external factors.Finally,the paper further discusses persistent challenges and knowledge gaps identified in the current research landscape of HCPR technology.Based on this critical analysis,pertinent recommendations are suggested to guide productive avenues for future research and development.展开更多
基金supported by the National Natural Science Foundation of China(grant number 52108394)the Key Research and Development Program of Shaanxi,China(grant number 2023-YBGY-491)+2 种基金the Spring Sunshine Program of the Ministry of Education of China(grant number 202200441)the Key Laboratory of Road and Traffic Engineering of the Ministry of Education,Tongji University(grant number K202307)the Fundamental Research Funds for the Central Universities,CHD(grant number 300102214209).
文摘The hot central-plant recycling(HCPR)technology has been widely concerned by researchers in pavement engineering because of its excellent economic benefits and positive environmental outcomes.Over the last few years,the application of HCPR technology in highway construction and maintenance has increasingly expanded.However,despite this wider adoption,critical issues concerning the composition of raw materials and performance-influencing factors of hot central-plant recycled asphalt mixtures(HCPRAM)necessitate careful consideration and deeper understanding.Therefore,conducting a detailed interpretation and systematic analysis of each component material and performance-influencing factors holds tremendous significance for advancing the design methodology,optimizing the production process,and enhancing the overall quality and durability of HCPRAM.This paper comprehensively reviews the current state-of-the-art research pertaining to the raw material composition and the crucial factors affecting the road performance of HCPRAM.Firstly,the functionality of recycled asphalt pavement(RAP)materials,virgin asphalt,virgin aggregates,rejuvenators,and fibers in the mixtures are introduced.Then,the influencing factors of the performance of HRAM are described in detail from both internal and external factors.Finally,the paper further discusses persistent challenges and knowledge gaps identified in the current research landscape of HCPR technology.Based on this critical analysis,pertinent recommendations are suggested to guide productive avenues for future research and development.
