Increasing the Content of Reclaimed Asphalt in Asphalt Mixture by using Rejuvenators

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F23%3A00366909" target="_blank" >RIV/68407700:21110/23:00366909 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1088/1755-1315/1196/1/012039" target="_blank" >https://doi.org/10.1088/1755-1315/1196/1/012039</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1755-1315/1196/1/012039" target="_blank" >10.1088/1755-1315/1196/1/012039</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Increasing the Content of Reclaimed Asphalt in Asphalt Mixture by using Rejuvenators

Popis výsledku v původním jazyce

Recycling pavements is beneficial on various levels, since using reclaimed asphalt (RA) has a positive effect on the economy and environmental protection at the same time. Removed old asphalt pavement is no longer considered as a waste material, which has to be landfilled, but a useful material for further applications. Leading to a reduction of the need for virgin materials and preserve the planet. At the start, RA was used for construction of embankments and unbound granular layers, later cold recycling became another effective solution. After years of experiments, the rate of RA has increased to reach even the 100 %. But typical RA content in hot asphalt mixtures is between 25 % to 40 %. The presence of RA in the asphalt mixture has a negative effect on the mixture properties. Two alternatives were used in order to soften the aged bitumen – use of softer binder or special additives, i.e., rejuvenators. This study evaluated the possibility of increasing the RA content (30 % and 50 %) in asphalt mixture by adding mainly bio-based alternative rejuvenators. Mechanical performance was evaluated by means of laboratory investigations for typical characteristics dedicated to durability, stiffness, and cracking potential.

Název v anglickém jazyce

Increasing the Content of Reclaimed Asphalt in Asphalt Mixture by using Rejuvenators

Popis výsledku anglicky

Recycling pavements is beneficial on various levels, since using reclaimed asphalt (RA) has a positive effect on the economy and environmental protection at the same time. Removed old asphalt pavement is no longer considered as a waste material, which has to be landfilled, but a useful material for further applications. Leading to a reduction of the need for virgin materials and preserve the planet. At the start, RA was used for construction of embankments and unbound granular layers, later cold recycling became another effective solution. After years of experiments, the rate of RA has increased to reach even the 100 %. But typical RA content in hot asphalt mixtures is between 25 % to 40 %. The presence of RA in the asphalt mixture has a negative effect on the mixture properties. Two alternatives were used in order to soften the aged bitumen – use of softer binder or special additives, i.e., rejuvenators. This study evaluated the possibility of increasing the RA content (30 % and 50 %) in asphalt mixture by adding mainly bio-based alternative rejuvenators. Mechanical performance was evaluated by means of laboratory investigations for typical characteristics dedicated to durability, stiffness, and cracking potential.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název statě ve sborníku

IOP Conference Series: Earth and Environmental Science, Volume 1196

ISBN

—

ISSN

1755-1315

e-ISSN

1755-1315

Počet stran výsledku

11

Strana od-do

1-11

Název nakladatele

IOP Publishing Ltd.

Místo vydání

Bristol

Místo konání akce

Thessaloniki

Datum konání akce

22. 3. 2023

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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