Study on Rejuvenators and Their Effect on Performance Characteristics of an Asphalt Concrete Containing 30% Reclaimed Asphalt

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F22%3A00358027" target="_blank" >RIV/68407700:21110/22:00358027 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1007/978-3-030-79801-7_4" target="_blank" >https://doi.org/10.1007/978-3-030-79801-7_4</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/978-3-030-79801-7_4" target="_blank" >10.1007/978-3-030-79801-7_4</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Study on Rejuvenators and Their Effect on Performance Characteristics of an Asphalt Concrete Containing 30% Reclaimed Asphalt

Popis výsledku v původním jazyce

The use of reclaimed asphalt has become a common practice and necessity in many developed countries whereas there are several options how to deal with elevated content of such material. Well-developed are solutions where reclaimed asphalt is cold fed by up to 20 %. Higher portions of reclaimed asphalt are still challenging and need additional focus to become a regularly used standard. Quite common in last few years has been the use of rejuvenators, which are special chemical compounds helping to partly restore the degraded bitumen and secure sufficient performance behavior of asphalt mix containing higher portions of reclaimed asphalt. Recent study focused on use of several market-established rejuvenators and some newly developed variants, which are predominantly based on renewable materials. A typical asphalt concrete AC16 has been selected and 30 % virgin aggregate was replaced by reclaimed asphalt of 0/8 mm grading. A scenario with 50 % reclaimed asphalt was assessed too but is not part of this paper. Rejuvenators were added in a content between 5-7 % of the degraded bitumen content present in the reclaimed asphalt. Functional tests have been performed focusing on water susceptibility, deformation behavior (stiffness) and resistance to crack propagation. At the same time bitumen extracted from the reclaimed asphalt was mixed with rejuvenator and selected bitumen tests were performed to find or confirm potential relations between binder and asphalt mix behavior.

Název v anglickém jazyce

Study on Rejuvenators and Their Effect on Performance Characteristics of an Asphalt Concrete Containing 30% Reclaimed Asphalt

Popis výsledku anglicky

The use of reclaimed asphalt has become a common practice and necessity in many developed countries whereas there are several options how to deal with elevated content of such material. Well-developed are solutions where reclaimed asphalt is cold fed by up to 20 %. Higher portions of reclaimed asphalt are still challenging and need additional focus to become a regularly used standard. Quite common in last few years has been the use of rejuvenators, which are special chemical compounds helping to partly restore the degraded bitumen and secure sufficient performance behavior of asphalt mix containing higher portions of reclaimed asphalt. Recent study focused on use of several market-established rejuvenators and some newly developed variants, which are predominantly based on renewable materials. A typical asphalt concrete AC16 has been selected and 30 % virgin aggregate was replaced by reclaimed asphalt of 0/8 mm grading. A scenario with 50 % reclaimed asphalt was assessed too but is not part of this paper. Rejuvenators were added in a content between 5-7 % of the degraded bitumen content present in the reclaimed asphalt. Functional tests have been performed focusing on water susceptibility, deformation behavior (stiffness) and resistance to crack propagation. At the same time bitumen extracted from the reclaimed asphalt was mixed with rejuvenator and selected bitumen tests were performed to find or confirm potential relations between binder and asphalt mix behavior.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/8JCH1002" target="_blank" >8JCH1002: Sdružené rejuvenační účinky u zestárnutého asfaltového pojiva z asfaltového recyklátu s využitím aditiv z bio-odpadů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Advances on Road Infrastructure and Mobility: Proceedings of the 18th International Road Federation World Meeting & Exhibition

ISBN

978-3-030-79800-0

ISSN

2366-3405

e-ISSN

—

Počet stran výsledku

11

Strana od-do

46-56

Název nakladatele

Springer International Publishing AG

Místo vydání

Cham

Místo konání akce

Dubai

Datum konání akce

8. 11. 2021

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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