Impact of selected rejuvenators on performance-based characteristics of asphalt concrete mix with 50 % of reclaimed asphalt

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F15%3A00232811" target="_blank" >RIV/68407700:21110/15:00232811 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Impact of selected rejuvenators on performance-based characteristics of asphalt concrete mix with 50 % of reclaimed asphalt

Popis výsledku v původním jazyce

Application of increased amounts of reclaimed asphalt pavement (RAP) in asphalt mixtures is a trend, whose importance has been increasingly followed in recent years. Along with this approach it is needed to find solutions in which reactivated bitumen in reclaimed asphalt will not have negative impact on the overall durability of the mixture. The durability can be affected primarily by the rate of degradation of bituminous binder in RAP. To evaluate the effect of different rejuvenators (vegetable or oil based) on the characteristics of asphalt mixture (asphalt concrete) with RAP an ACsurf 11+ with 50 % reclaimed asphalt material was designed. For the laboratory mixtures rejuvenators Reju (newly developed Czech types), Italian additive IT and German additive ST were applied. Further, the warm-mix additive ET and industrially produced ready to use binder for high content of RAP RE were used. These additives were added in varying contents in order to verify their effectiveness on the mixture. Selected rejuvenators were applied with different content of new binder. In certain mixtures the recycled material was preheated to a lower temperature (used temperature was 130°C) in order to observe effect of this aspect of manufacturing of asphalt mixtures. The mixtures were compared to each other according to the tests commonly used in the Czech Republic. It was primarily the determination of resistance against water immersion, determination of stiffness, the wheel tracking test and assessment of behaviour in low temperature range which was under focus. The results of the laboratory study are presented in the paper.

Název v anglickém jazyce

Impact of selected rejuvenators on performance-based characteristics of asphalt concrete mix with 50 % of reclaimed asphalt

Popis výsledku anglicky

Application of increased amounts of reclaimed asphalt pavement (RAP) in asphalt mixtures is a trend, whose importance has been increasingly followed in recent years. Along with this approach it is needed to find solutions in which reactivated bitumen in reclaimed asphalt will not have negative impact on the overall durability of the mixture. The durability can be affected primarily by the rate of degradation of bituminous binder in RAP. To evaluate the effect of different rejuvenators (vegetable or oil based) on the characteristics of asphalt mixture (asphalt concrete) with RAP an ACsurf 11+ with 50 % reclaimed asphalt material was designed. For the laboratory mixtures rejuvenators Reju (newly developed Czech types), Italian additive IT and German additive ST were applied. Further, the warm-mix additive ET and industrially produced ready to use binder for high content of RAP RE were used. These additives were added in varying contents in order to verify their effectiveness on the mixture. Selected rejuvenators were applied with different content of new binder. In certain mixtures the recycled material was preheated to a lower temperature (used temperature was 130°C) in order to observe effect of this aspect of manufacturing of asphalt mixtures. The mixtures were compared to each other according to the tests commonly used in the Czech Republic. It was primarily the determination of resistance against water immersion, determination of stiffness, the wheel tracking test and assessment of behaviour in low temperature range which was under focus. The results of the laboratory study are presented in the 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

Proceedings of 11th Conference on Asphalt Pavements for Southern Africa (CAPSA 2015)

ISBN

978-1-874968-69-6

ISSN

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e-ISSN

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Počet stran výsledku

7

Strana od-do

279-285

Název nakladatele

Southern African Bitumen Association

Místo vydání

Pinelands - Western Cape

Místo konání akce

Sun City

Datum konání akce

16. 8. 2015

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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