Articles liés à POLYMER MODIFIED ASPHALT CEMENTS: Characterization...

POLYMER MODIFIED ASPHALT CEMENTS: Characterization of Aged Bitumens for Recycling Purposes - Couverture souple

Daranga, Codrin

 
9783838310336: POLYMER MODIFIED ASPHALT CEMENTS: Characterization of Aged Bitumens for Recycling Purposes
Couverture souple
ISBN 10 : 3838310330 ISBN 13 : 9783838310336
Editeur : LAP Lambert Academic Publishing, 2009

Synopsis

This work describes the characterization of aged polymer modified bitumens to evaluate their potential for recycling. A tri-block co-polymer modified binder was selected and characterized using standard bitumen qualification techniques, i.e., the Superpave PG protocol. We developed a procedure to characterize the relative concentration of polymer in asphalt cements by gel permeation chromatography. Infrared spectrographic, thermogravimetric and rheological techniques were used to identify changes in the binder components as a result of aging. A correlation between field aging time and simulated aging by PAV was developed; PAV with humidity proved to be the best prediction. A comparison was established between the field aged materials and a series of lab aged binders. All binders were characterized with respect to their composition and rheological properties. In general, residual polymer was detected using gel permeation chromatography analysis except when extensive oxidative age hardening of the binder had occurred. Recycling of this material will require additives to restore the desired rheological properties to the binder blend.

Les informations fournies dans la section « Synopsis » peuvent faire référence à une autre édition de ce titre.

Présentation de l'éditeur

This work describes the characterization of aged polymer modified bitumens to evaluate their potential for recycling. A tri-block co-polymer modified binder was selected and characterized using standard bitumen qualification techniques, i.e., the Superpave PG protocol. We developed a procedure to characterize the relative concentration of polymer in asphalt cements by gel permeation chromatography. Infrared spectrographic, thermogravimetric and rheological techniques were used to identify changes in the binder components as a result of aging. A correlation between field aging time and simulated aging by PAV was developed; PAV with humidity proved to be the best prediction. A comparison was established between the field aged materials and a series of lab aged binders. All binders were characterized with respect to their composition and rheological properties. In general, residual polymer was detected using gel permeation chromatography analysis except when extensive oxidative age hardening of the binder had occurred. Recycling of this material will require additives to restore the desired rheological properties to the binder blend.

Biographie de l'auteur

Graduated in 1999 with a BS in chemical engineering. He obtained his PhD in 2005 in asphalt chemistry at Louisiana State University, under Dr. W. Daly, Dr. I. Negulescu, and Dr. L. Mohammad. Codrin currently conducts research in the Department of Civil & Environmental Engineering at the University of Wisconsin-Madison.

Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.

Éditeur
LAP Lambert Academic Publishing
Date d'édition
2009
Langue
anglais
ISBN 10 
3838310330
ISBN 13 
9783838310336
Reliure
Broché
Nombre de pages
104
Coordonnées du fabricant
non disponible
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