Rigid-flexible composite pavement has gained significant popularity in recent decades.This paper provides a comprehensive review of the research progress concerning rigid-flexible composite pavement,aiming to promote ...Rigid-flexible composite pavement has gained significant popularity in recent decades.This paper provides a comprehensive review of the research progress concerning rigid-flexible composite pavement,aiming to promote its application and address key issues while identifying future directions.The design theory and methodology of rigid-flexible composite pavement are discussed,followed by a description of its structural and mechanical behavior characteristics.The load stress,temperature stress,and their interactive effects between the asphalt layer and the rigid base were analyzed.It is clarified that the asphalt layer serves a dual role as both a“functional layer”and a“structural layer”.Typical distresses of rigid-flexible composite pavement,which primarily occur in the asphalt layer,were discussed.These distresses include reflective cracking,top-down cracking,rutting,and compressive-shear failure.Generally,the integrity of the rigid base and the interlaminar bonding conditions significantly impact the performance and distress of the asphalt layer.The technology for enhancing the performance of rigid-flexible composite pavement is summarized in three aspects:asphalt layer properties,rigid base integrity,and interlaminar bonding condition.The study concludes that developing high-performance pavement materials based on their structural behaviors is an effective approach to improve the performance and durability of rigid-flexible composite pavement.The integrated design of structure and materials represents the future direction of road design.展开更多
In sandwich structures,lightweight cellular materials as the core hold the face sheets far away from the neutral axis to maximize the bending performance of the structure.Honeycomb materials as a major type of lightwe...In sandwich structures,lightweight cellular materials as the core hold the face sheets far away from the neutral axis to maximize the bending performance of the structure.Honeycomb materials as a major type of lightweight cellular materials have been widely applied in various fields,including aerospace,vehicle,marine,architecture and mechanical engineering,due to reliable mechanical properties and excellent designability.Using fiber-reinforced composites is an efficient method to develop ultralight honeycomb materials with superior mechanical behaviors.In recent years,fiber-reinforced composite honeycomb materials possessing lightweight and excellent mechanical performances have attracted noticeable attention to replacing traditional aluminum honeycombs and Nomex honeycombs.Compared to metal,polymer and Nomex paper,fiber-reinforced composites possess various merits,such as high specific stiffness and specific strength,excellent fatigue property,corrosion resistance and high-temperature resistance.Thus,the applications of fiber-reinforced honeycomb material for sandwich core have unlimited potential in hypersonic vehicles,long-range rockets,cargo vessels and protective systems.Although the fact that attention has been rapidly increasing,there is a lack of comprehensive reviews of new advances in the field of fiber-reinforced composite honeycomb materials.In this review,new advances reported by different scientists in the field of fiber-reinforced honeycomb materials have been reviewed and analyzed to provide an in-depth overview and knowledge for beginners in the field of ultralightweight and high-performance composite sandwich architectures.The challenges and prospects for the development of fiberreinforced honeycomb materials have also been presented.展开更多
基金This manuscript is supported by the National Key Research and Development Program of China(Grant No.2021YFB2601000)the National Natural Science Foundation of China(Grant Nos.52278437,52008044)+2 种基金the Natural Science Foundation of Hunan Province(Grant No.2022JJ40479)the Science and Technology Innovation Program of Hunan Provincial Department of Transportation(Grant No.202236)the Changsha Outstanding Innovative Youth Training Program Project(Grant No.kq2306009).
文摘Rigid-flexible composite pavement has gained significant popularity in recent decades.This paper provides a comprehensive review of the research progress concerning rigid-flexible composite pavement,aiming to promote its application and address key issues while identifying future directions.The design theory and methodology of rigid-flexible composite pavement are discussed,followed by a description of its structural and mechanical behavior characteristics.The load stress,temperature stress,and their interactive effects between the asphalt layer and the rigid base were analyzed.It is clarified that the asphalt layer serves a dual role as both a“functional layer”and a“structural layer”.Typical distresses of rigid-flexible composite pavement,which primarily occur in the asphalt layer,were discussed.These distresses include reflective cracking,top-down cracking,rutting,and compressive-shear failure.Generally,the integrity of the rigid base and the interlaminar bonding conditions significantly impact the performance and distress of the asphalt layer.The technology for enhancing the performance of rigid-flexible composite pavement is summarized in three aspects:asphalt layer properties,rigid base integrity,and interlaminar bonding condition.The study concludes that developing high-performance pavement materials based on their structural behaviors is an effective approach to improve the performance and durability of rigid-flexible composite pavement.The integrated design of structure and materials represents the future direction of road design.
基金supported by the National Natural Science Foundation of China(Grant No.11572100)Program for Outstanding Young Scholars in Harbin Institute of Technology+1 种基金Natural Science Foundation of Heilongjiang Province(Grant No.YQ2019A003)the Science and Technology on Advanced Composites in Special Environment Laboratory and Young Elite Scientist Sponsorship Program by China Association of Science and Technology(Grant No.YESS20160190)。
文摘In sandwich structures,lightweight cellular materials as the core hold the face sheets far away from the neutral axis to maximize the bending performance of the structure.Honeycomb materials as a major type of lightweight cellular materials have been widely applied in various fields,including aerospace,vehicle,marine,architecture and mechanical engineering,due to reliable mechanical properties and excellent designability.Using fiber-reinforced composites is an efficient method to develop ultralight honeycomb materials with superior mechanical behaviors.In recent years,fiber-reinforced composite honeycomb materials possessing lightweight and excellent mechanical performances have attracted noticeable attention to replacing traditional aluminum honeycombs and Nomex honeycombs.Compared to metal,polymer and Nomex paper,fiber-reinforced composites possess various merits,such as high specific stiffness and specific strength,excellent fatigue property,corrosion resistance and high-temperature resistance.Thus,the applications of fiber-reinforced honeycomb material for sandwich core have unlimited potential in hypersonic vehicles,long-range rockets,cargo vessels and protective systems.Although the fact that attention has been rapidly increasing,there is a lack of comprehensive reviews of new advances in the field of fiber-reinforced composite honeycomb materials.In this review,new advances reported by different scientists in the field of fiber-reinforced honeycomb materials have been reviewed and analyzed to provide an in-depth overview and knowledge for beginners in the field of ultralightweight and high-performance composite sandwich architectures.The challenges and prospects for the development of fiberreinforced honeycomb materials have also been presented.
