Influence of reclaimed asphalt content on asphalt mix characteristics doped by selected rejuvenators

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F15%3A00232730" target="_blank" >RIV/68407700:21110/15:00232730 - isvavai.cz</a>

Výsledek na webu

<a href="http://crcnetbase.com/isbn/978-1-138-02866-1" target="_blank" >http://crcnetbase.com/isbn/978-1-138-02866-1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1201/b18538-1" target="_blank" >10.1201/b18538-1</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Influence of reclaimed asphalt content on asphalt mix characteristics doped by selected rejuvenators

Popis výsledku v původním jazyce

The application of increased quantities of reclaimed material in asphalt mixes is a trend whose importance has been growing steadily in recent years. Along with this approach it is needed to find solutions in which reactivated bitumen in the reclaimed asphalt pavement (RAP) will not have any negative impacts on mixture durability. The durability can be affected primarily by the rate of degradation of bitumen contained in the RAP. An important aspect is therefore the quantity of the reclaimed asphalt added to the asphalt mix. For the assessment of these effects in combination with selected types of rejuvenators and their influence on asphalt properties, asphalt concrete AC11 was selected as a suitable representative. Three levels of RAP in the AC mix were proposed: 20 %; 35 % and 50 %. From the perspective of chemical additives, rejuvenators of a new product series developed by a Czech refinery, as well as existing Italian or German products were selected. Further Indian and U.S. additives were applied which are used mostly in the field of warm mix asphalt. Last but not least industrially produced binder for mixes with high RAP proportion was assessed as well. The additives were appropriately combined with the selected RAP contents. Various percentages of the additives were applied and different combinations created with varying quantities of additional new bituminous binder. The mixes were compared to one another according to the tests commonly applied in the Czech Republic (mainly moisture susceptibility, stiffness determination, rutting test and assessment of behaviour in low tem-perature range). The results of the conduced laboratory study are presented in this paper.

Název v anglickém jazyce

Influence of reclaimed asphalt content on asphalt mix characteristics doped by selected rejuvenators

Popis výsledku anglicky

The application of increased quantities of reclaimed material in asphalt mixes is a trend whose importance has been growing steadily in recent years. Along with this approach it is needed to find solutions in which reactivated bitumen in the reclaimed asphalt pavement (RAP) will not have any negative impacts on mixture durability. The durability can be affected primarily by the rate of degradation of bitumen contained in the RAP. An important aspect is therefore the quantity of the reclaimed asphalt added to the asphalt mix. For the assessment of these effects in combination with selected types of rejuvenators and their influence on asphalt properties, asphalt concrete AC11 was selected as a suitable representative. Three levels of RAP in the AC mix were proposed: 20 %; 35 % and 50 %. From the perspective of chemical additives, rejuvenators of a new product series developed by a Czech refinery, as well as existing Italian or German products were selected. Further Indian and U.S. additives were applied which are used mostly in the field of warm mix asphalt. Last but not least industrially produced binder for mixes with high RAP proportion was assessed as well. The additives were appropriately combined with the selected RAP contents. Various percentages of the additives were applied and different combinations created with varying quantities of additional new bituminous binder. The mixes were compared to one another according to the tests commonly applied in the Czech Republic (mainly moisture susceptibility, stiffness determination, rutting test and assessment of behaviour in low tem-perature range). The results of the conduced laboratory study are presented in this paper.

Druh

D - Stať ve sborníku

CEP obor

JM - Inženýrské stavitelství

OECD FORD obor

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Projekt

<a href="/cs/project/TE01020168" target="_blank" >TE01020168: Centrum pro efektivní a udržitelnou dopravní infrastrukturu (CESTI)</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název statě ve sborníku

Bituminous Mixtures and Pavements VI

ISBN

978-1-138-02866-1

ISSN

—

e-ISSN

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Počet stran výsledku

10

Strana od-do

551-560

Název nakladatele

Taylor & Francis/Balkema

Místo vydání

Leiden

Místo konání akce

Thessaloniki

Datum konání akce

10. 6. 2015

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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