6533b82bfe1ef96bd128cdc2
RESEARCH PRODUCT
The effect of prolonged storage time on asphalt rubber binder properties
Caio SantosLiseane Padilha ThivesDavide Lo PrestiPaulo PereiraJorge C. Paissubject
Materials science0211 other engineering and technologies02 engineering and technologyAsphalt rubberNatural rubberRheologyEngenharia e Tecnologia::Engenharia Civil021105 building & constructionDigestion timeGeneral Materials ScienceCrumb rubberComposite materialCivil and Structural EngineeringCrumb rubberScience & TechnologyBuilding and Construction021001 nanoscience & nanotechnologyAsphaltvisual_art:Engenharia Civil [Engenharia e Tecnologia]visual_art.visual_art_mediumStorage stabilityAsphalt rubber Digestion time Storage stability Rheology Scanning electron microscopy Crumb rubber0210 nano-technologyRheologyScanning electron microscopydescription
Abstract This study wants to provide fundamental understanding of prolonged storage time on asphalt rubber binder properties by performing an investigation on the variation of conventional properties, rheology and morphology of four asphalt rubbers maintained at 180 °C in low shear for different digestion/storage times up to 48 h. The analysed asphalt rubbers were manufactured by combining two different asphalt binder grades, pen 35/50 and pen 50/70, with both cryogenic and ambient crumb rubber. Results have shown that keeping asphalt rubber agitated at the above mentioned processing conditions, up to 48 h, is significantly detrimental when an ambient crumb rubber is used, while it seems not to negatively affect the asphalt rubber produced with cryogenic rubber crumbs. Instead, no remarkable change is recorded when asphalt rubbers are produced with the same rubber type and by changing the base asphalt binders, namely pen 35/50 and pen 50/70.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-06-20 |