Asphalt pavement is a key component of highway infrastructures in China and worldwide.In asphalt pavement design and condition assessment,the modulus of the asphalt mixture layer is a crucial parameter.However,this pa...Asphalt pavement is a key component of highway infrastructures in China and worldwide.In asphalt pavement design and condition assessment,the modulus of the asphalt mixture layer is a crucial parameter.However,this parameter varies between the laboratory and field loading modes(i.e.,loading frequency,compressive or tensile loading pattern),due to the viscoelastic property and composite structure of the asphalt mixture.The present study proposes a comprehensive frequency-based approach to correlate the asphalt layer moduli obtained under two field and three laboratory loading modes.The field modes are vehicular and falling weight deflectometer(FWD)loading modes,and the laboratory ones are uniaxial compressive(UC),indirect tensile(IDT),and four-point bending(4PB)loading modes.The loading frequency is used as an intermediary parameter for correlating the asphalt layer moduli under different loading modes.The observations made at two field large-scale experimental pavements facilitate the correlation analysis.It is found that the moduli obtained via laboratory 4PB tests are pretty close to those of vehicular loading schemes,in contrast to those derived in UC,IDT,and FWD modes,which need to be adjusted.The corresponding adjustment factors are experimentally assessed.The applications of those adjustment factors are expected to ensure that the moduli measured under different loading modes are appropriately used in asphalt mixture pavement design and assessment.展开更多
Asphalt pavement is currently one of the main components in the construction of roads and bridges.However,from a practical point of view,various quality problems are prone to occur in the surface layer of asphalt pave...Asphalt pavement is currently one of the main components in the construction of roads and bridges.However,from a practical point of view,various quality problems are prone to occur in the surface layer of asphalt pavement,which will lead to the poor overall quality of road and bridge projects.Therefore,it should be applied reasonably.Advanced testing technologies are used to test the mixture quality,compaction,segregation,thickness,and other aspects of the asphalt pavement surface layer,so as to improve the quality of the asphalt pavement surface layer,and then improve the overall quality of road and bridge construction.Therefore,this paper mainly analyzes the technologies for asphalt pavement surface layer testing in road and bridge engineering construction.展开更多
基金The study was supported by the National Key R&D Program of China(No.2018YFB1600100)the National Natural Science Foundation of China(Grant No.5210081231)the Postdoctoral Science Foundation of China(Nos.BX2021216 and 2021M702479).
文摘Asphalt pavement is a key component of highway infrastructures in China and worldwide.In asphalt pavement design and condition assessment,the modulus of the asphalt mixture layer is a crucial parameter.However,this parameter varies between the laboratory and field loading modes(i.e.,loading frequency,compressive or tensile loading pattern),due to the viscoelastic property and composite structure of the asphalt mixture.The present study proposes a comprehensive frequency-based approach to correlate the asphalt layer moduli obtained under two field and three laboratory loading modes.The field modes are vehicular and falling weight deflectometer(FWD)loading modes,and the laboratory ones are uniaxial compressive(UC),indirect tensile(IDT),and four-point bending(4PB)loading modes.The loading frequency is used as an intermediary parameter for correlating the asphalt layer moduli under different loading modes.The observations made at two field large-scale experimental pavements facilitate the correlation analysis.It is found that the moduli obtained via laboratory 4PB tests are pretty close to those of vehicular loading schemes,in contrast to those derived in UC,IDT,and FWD modes,which need to be adjusted.The corresponding adjustment factors are experimentally assessed.The applications of those adjustment factors are expected to ensure that the moduli measured under different loading modes are appropriately used in asphalt mixture pavement design and assessment.
文摘Asphalt pavement is currently one of the main components in the construction of roads and bridges.However,from a practical point of view,various quality problems are prone to occur in the surface layer of asphalt pavement,which will lead to the poor overall quality of road and bridge projects.Therefore,it should be applied reasonably.Advanced testing technologies are used to test the mixture quality,compaction,segregation,thickness,and other aspects of the asphalt pavement surface layer,so as to improve the quality of the asphalt pavement surface layer,and then improve the overall quality of road and bridge construction.Therefore,this paper mainly analyzes the technologies for asphalt pavement surface layer testing in road and bridge engineering construction.
