Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
A Synthesis of Asphalt Foaming Parameters and Their Association in Foamed Binder and Mixture Characteristics
Water injected foamed warm mix asphalt (WMA) accounts for about 90% of all WMA produced in last several years in the United States. This study aims for a documentation of recently developed asphalt foaming parameters and their correlation with foamed binder and mixture characteristics based on existing foamed WMA research. Incorporation of 1–3% water into hot binder stream at 141–171°C results in foamed asphalt binder through binder volume expansion and viscosity reduction, which is intended to improved coatability and workability. Foaming parameters: expansion ratio (ER), half-life (HL), surface area index (SAI), foamability index (FI), and collapse rate of semi-stable bubbles (k-value), together with foamed binder and mixture properties have been synthesized. Foaming water content (FWC) is found as a key parameter of foamed WMA practices. Optimization of FWC and subsequent evaluation of mixture properties shows that foamed asphalt mixtures exhibits equivalent or better performance as conventional hot mix asphalt (HMA).
A Synthesis of Asphalt Foaming Parameters and Their Association in Foamed Binder and Mixture Characteristics
Water injected foamed warm mix asphalt (WMA) accounts for about 90% of all WMA produced in last several years in the United States. This study aims for a documentation of recently developed asphalt foaming parameters and their correlation with foamed binder and mixture characteristics based on existing foamed WMA research. Incorporation of 1–3% water into hot binder stream at 141–171°C results in foamed asphalt binder through binder volume expansion and viscosity reduction, which is intended to improved coatability and workability. Foaming parameters: expansion ratio (ER), half-life (HL), surface area index (SAI), foamability index (FI), and collapse rate of semi-stable bubbles (k-value), together with foamed binder and mixture properties have been synthesized. Foaming water content (FWC) is found as a key parameter of foamed WMA practices. Optimization of FWC and subsequent evaluation of mixture properties shows that foamed asphalt mixtures exhibits equivalent or better performance as conventional hot mix asphalt (HMA).
A Synthesis of Asphalt Foaming Parameters and Their Association in Foamed Binder and Mixture Characteristics
Bairgi, Biswajit K. (Autor:in) / Tarefder, Rafiqul A. (Autor:in)
International Conference on Highway Pavements and Airfield Technology 2017 ; 2017 ; Philadelphia, Pennsylvania
Airfield and Highway Pavements 2017 ; 256-267
24.08.2017
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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