Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preliminary experience with improved asphalt cement specifications in the City of Kingston, Ontario, Canada
HighlightsAcceptance testing for HMA is best done on extracted and recovered asphalt cement.Both DENT and EBBR tests are highly sensitive to the quality and durability of the asphalt cement.Implementation of DENT and EBBR for material acceptance provides improved grading.Phase angle is a property that deserves further investigation for specification grading.Recycling of REOB, RAP and RAS must be controlled in the interest of sustainability.
AbstractThe City of Kingston in Ontario, Canada, has implemented improved asphalt cement specifications, implemented double-edge-notched tension (DENT) and extended bending beam rheometer (EBBR) tests on paving contracts, and set reasonable acceptance criteria. Several contracts from 2009 and 2010 showed unanticipated, premature and excessive cracking, possibly due to contamination or overheating of the asphalt mix, or other issues unforeseen during the pavement design process. However, more recent contracts investigated for this study are expected to perform well, highlighting the importance of testing the asphalt cement recovered from the loose mix and of using appropriate specification tests and acceptance criteria.
Preliminary experience with improved asphalt cement specifications in the City of Kingston, Ontario, Canada
HighlightsAcceptance testing for HMA is best done on extracted and recovered asphalt cement.Both DENT and EBBR tests are highly sensitive to the quality and durability of the asphalt cement.Implementation of DENT and EBBR for material acceptance provides improved grading.Phase angle is a property that deserves further investigation for specification grading.Recycling of REOB, RAP and RAS must be controlled in the interest of sustainability.
AbstractThe City of Kingston in Ontario, Canada, has implemented improved asphalt cement specifications, implemented double-edge-notched tension (DENT) and extended bending beam rheometer (EBBR) tests on paving contracts, and set reasonable acceptance criteria. Several contracts from 2009 and 2010 showed unanticipated, premature and excessive cracking, possibly due to contamination or overheating of the asphalt mix, or other issues unforeseen during the pavement design process. However, more recent contracts investigated for this study are expected to perform well, highlighting the importance of testing the asphalt cement recovered from the loose mix and of using appropriate specification tests and acceptance criteria.
Preliminary experience with improved asphalt cement specifications in the City of Kingston, Ontario, Canada
Ding, Haibo (Autor:in) / Tetteh, Nathaniel (Autor:in) / Hesp, Simon A.M. (Autor:in)
Construction and Building Materials ; 157 ; 467-475
20.09.2017
9 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
AASHTO , American association of state transportation and highway officials , CTOD , critical crack tip opening displacement , DENT , double-edge-notched tension , EBBR , extended bending beam rheometer , HMA , hot-mix asphalt , MTO , Ministry of Transportation of Ontario , PAV , pressure aging vessel , REOB , recycled engine oil bottoms , RAP , reclaimed asphalt pavement , RAS , reclaimed asphalt shingles , RTFO , rolling thin film oven , SB , styrene-butadiene type polymer modifier , Asphalt cement specification , Double-edge-notched tension (DENT) test , Critical crack tip opening displacement (CTOD) , Extended bending beam rheometer (EBBR) test , Rheological phase angle , Thermoreversible aging , Thermal cracking , Fatigue cracking
| British Library Online Contents | 2017
| British Library Online Contents | 2017
| British Library Online Contents | 2017