Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Improving the Mechanical Properties of Cold Mix Asphalt Mixtures Reinforced by Natural and Synthetic Fibers
The enhancement of the performance of flexible pavements by reinforcing asphalt mixtures is considered valuable because of the negative environmental conditions and heavy loads pavements endure resulting in the unsatisfactory performance of conventional mixtures. This research investigates the mechanical properties of cold mix asphalt (CMA) mixtures reinforced by natural (coir) and synthetic (glass) fibers, the main aim being to develop and optimise a high performing CMA mixture for use as a surface course, incorporating natural and synthetic fibers, which could be used in place of hot mix asphalt (HMA) in any situation. Laboratory investigations were performed to measure and evaluate the mechanical properties of reinforced and unreinforced mixtures with different fiber types, contents and lengths. These investigations included the indirect tensile stiffness modulus test, uniaxial creep test, wheel tracking tests and water sensitivity in terms of indirect tensile strength. The results revealed a considerable improvement in the mechanical properties of CMA specifically because of the high stiffness and tensile strength properties of the fibers used. Due to these improvements, rutting resistance and structural resistance to distress occurring in asphalt pavements and pavements service life, may be enhanced.
Improving the Mechanical Properties of Cold Mix Asphalt Mixtures Reinforced by Natural and Synthetic Fibers
The enhancement of the performance of flexible pavements by reinforcing asphalt mixtures is considered valuable because of the negative environmental conditions and heavy loads pavements endure resulting in the unsatisfactory performance of conventional mixtures. This research investigates the mechanical properties of cold mix asphalt (CMA) mixtures reinforced by natural (coir) and synthetic (glass) fibers, the main aim being to develop and optimise a high performing CMA mixture for use as a surface course, incorporating natural and synthetic fibers, which could be used in place of hot mix asphalt (HMA) in any situation. Laboratory investigations were performed to measure and evaluate the mechanical properties of reinforced and unreinforced mixtures with different fiber types, contents and lengths. These investigations included the indirect tensile stiffness modulus test, uniaxial creep test, wheel tracking tests and water sensitivity in terms of indirect tensile strength. The results revealed a considerable improvement in the mechanical properties of CMA specifically because of the high stiffness and tensile strength properties of the fibers used. Due to these improvements, rutting resistance and structural resistance to distress occurring in asphalt pavements and pavements service life, may be enhanced.
Improving the Mechanical Properties of Cold Mix Asphalt Mixtures Reinforced by Natural and Synthetic Fibers
Shanbara, Hayder Kamil (Autor:in) / Ruddock, Felicite (Autor:in) / Atherton, William (Autor:in)
International Conference on Highway Pavements and Airfield Technology 2017 ; 2017 ; Philadelphia, Pennsylvania
Airfield and Highway Pavements 2017 ; 102-111
24.08.2017
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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