The Effect of Ageing on Selected Asphalt Binders
Vliv stárnutí na vybraná asfaltová pojiva
Authors
Supervisors
Reviewers
Editors
Other contributors
Journal Title
Journal ISSN
Volume Title
Publisher
České vysoké učení technické v Praze
Czech Technical University in Prague
Czech Technical University in Prague
Date
Abstract
Tato diplomová práce je zaměřena na vyhodnocení dat naměřených na asfaltu s penetrací 50/70 mm. Byly zvoleny dvě typy modifikací, dohromady tedy tři typy zkušebních vzorků (nemodifikovaný asfalt, RET modifikace s PPA a kombinace RET + SBS a PPA modifikace) a každá z těchto modifikací byla podrobena různým typům stárnutí (nezestárlý asfalt, RTFO, RTFO3x, PAV a RTFO6x). Pro objasnění reologických vlastností těchto modifikací při různých typech stárnutí byly provedeny empirické (penetrace, bod měknutí, vratná a silová duktilita) i výkonostní (DSR a BBR měření) normované materiálové zkoušky. Práce je zaměřena na vyhodnocení vlastností pojiva při kombinaci RET a SBS modifikace. Dalším úkolem této práce je diskuse na téma, zda je možné nahradit PAV stárnutí třemi cykly RTFO.
This paper discuss an evaluation of data measured on asphalt binder with penetration 50/70 at several states of ageing (non aged binder, RTFO, RTFO3x, PAV and RTFO6x). Different modified binders (base binder, RET and SBS + RET modification) were tested at each state of ageing. To determine the rheological properties of asphalt, performance tests (stiffness complex shear modulus measuring G*) and empirical tests (penetration test, ring and ball test, kinematic viscosity, force ductility and elastic recovery test) were performed. The thesis discusses the effect of combining RET and SBS modification with PPA, so it's evaluates each test performed for each type of modification and for each state of ageing. The paper also discusses the possibility to replace one cycle of PAV ageing with three cycles of RTFO, referred in this paper as RTFO3x.
This paper discuss an evaluation of data measured on asphalt binder with penetration 50/70 at several states of ageing (non aged binder, RTFO, RTFO3x, PAV and RTFO6x). Different modified binders (base binder, RET and SBS + RET modification) were tested at each state of ageing. To determine the rheological properties of asphalt, performance tests (stiffness complex shear modulus measuring G*) and empirical tests (penetration test, ring and ball test, kinematic viscosity, force ductility and elastic recovery test) were performed. The thesis discusses the effect of combining RET and SBS modification with PPA, so it's evaluates each test performed for each type of modification and for each state of ageing. The paper also discusses the possibility to replace one cycle of PAV ageing with three cycles of RTFO, referred in this paper as RTFO3x.