Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
PREDICTED DESIGN THICKNESS OF MODIFIED HMA LAYER FOR FLEXIBLE HIGHWAY PAVEMENT
The major reason for using asphalt mixture modifiers is to improve the performance of asphalt pavement to meet the requirement under prevailing stresses from traffic loading and environment effects and to reduce the pavement thickness. Structural thickness design of asphalt pavement layers is a function of many factors; one of the most important of them is the elastic modulus (E) of the asphalt mix. E values may be estimated directly in a laboratory by test, or indirectly by correlation with other tests like Marshall Stability. Additionally, E of hot mixture asphalt is used to estimate the layer relative strength coefficient (a) that is used to estimate the Structural Number parameter (SN), which allows for determining the required layer thickness. The major objective of this research is to predate a statically model to estimate the effect of asphalt modification on the layer thickness. 75 specimens of control and modified HMA for surface are designed and tested according to Marshall Method with optimum asphalt cement content (4.8%) and different types and contents of available modifiers.
PREDICTED DESIGN THICKNESS OF MODIFIED HMA LAYER FOR FLEXIBLE HIGHWAY PAVEMENT
The major reason for using asphalt mixture modifiers is to improve the performance of asphalt pavement to meet the requirement under prevailing stresses from traffic loading and environment effects and to reduce the pavement thickness. Structural thickness design of asphalt pavement layers is a function of many factors; one of the most important of them is the elastic modulus (E) of the asphalt mix. E values may be estimated directly in a laboratory by test, or indirectly by correlation with other tests like Marshall Stability. Additionally, E of hot mixture asphalt is used to estimate the layer relative strength coefficient (a) that is used to estimate the Structural Number parameter (SN), which allows for determining the required layer thickness. The major objective of this research is to predate a statically model to estimate the effect of asphalt modification on the layer thickness. 75 specimens of control and modified HMA for surface are designed and tested according to Marshall Method with optimum asphalt cement content (4.8%) and different types and contents of available modifiers.
PREDICTED DESIGN THICKNESS OF MODIFIED HMA LAYER FOR FLEXIBLE HIGHWAY PAVEMENT
Al-khafaji, Fatimah Fahem (Autor:in)
16.02.2017
Kufa Journal of Engineering; Vol 8, No 1 (2017): Kufa Journal of Engineering ; 2523-0018 ; 2071-5528
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
DDC:
621
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