Impact of Asphalt Ageing on the Activity of Adhesion Promoters and the Moisture Susceptibility
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F16%3A00300047" target="_blank" >RIV/68407700:21110/16:00300047 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/68407700:21730/16:00300047
Výsledek na webu
<a href="http://www.sciencedirect.com/science/article/pii/S2352146516300667" target="_blank" >http://www.sciencedirect.com/science/article/pii/S2352146516300667</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.trpro.2016.05.066" target="_blank" >10.1016/j.trpro.2016.05.066</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Impact of Asphalt Ageing on the Activity of Adhesion Promoters and the Moisture Susceptibility
Popis výsledku v původním jazyce
Bitumen-aggregate adhesion is one of the crucial characteristics related to an asphalt mix. It affects the mix durability mainly in terms of its moisture susceptibility. Wide range of adhesion promoters is available to the market and can be used in regular practice, nevertheless usually only limited attention is paid to the long term activity (mainly the effective substances) and stability of the additives in the bitumen and the asphalt mix. Research done at the Czech Technical University in Prague is focused on studying the impact of differently aged asphalt mix using selected procedures defined in prEN 12697-52 as well as developing a self-defined procedure by applying the PAV equipment used since many years for long-term bitumen ageing. The results of aged mixtures were always compared to unaged control mixes. In parallel use of aged bitumen was assessed as well. The results were further compared to a simple adhesion test to get a more complex understanding of the activity of selected additives. In total more than 5 additives were selected and tested on one type of asphalt concrete with the application on a more hydrophilic aggregate type. Results gained during this experimental study are presented in the paper using as a criterion indirect tensile strength ratio determined either by EN 12697-12 or by modified procedure according to AASHTO T283. In parallel because of elevated temperatures used during ageing suitable covering of cylindrical test specimens was analyzed as well to avoid unnecessary deformations or even disintegration of the tested specimens. For this reason two types of protective collar were chosen – PVC and thin steel mash – in both cases fixed by plastic belts. It is assumed that steel mash can better simulate the effect of ageing keeping the envelope partly free for direct contact with hot air and pressure. Results of this comparison are presented in this paper as well.
Název v anglickém jazyce
Impact of Asphalt Ageing on the Activity of Adhesion Promoters and the Moisture Susceptibility
Popis výsledku anglicky
Bitumen-aggregate adhesion is one of the crucial characteristics related to an asphalt mix. It affects the mix durability mainly in terms of its moisture susceptibility. Wide range of adhesion promoters is available to the market and can be used in regular practice, nevertheless usually only limited attention is paid to the long term activity (mainly the effective substances) and stability of the additives in the bitumen and the asphalt mix. Research done at the Czech Technical University in Prague is focused on studying the impact of differently aged asphalt mix using selected procedures defined in prEN 12697-52 as well as developing a self-defined procedure by applying the PAV equipment used since many years for long-term bitumen ageing. The results of aged mixtures were always compared to unaged control mixes. In parallel use of aged bitumen was assessed as well. The results were further compared to a simple adhesion test to get a more complex understanding of the activity of selected additives. In total more than 5 additives were selected and tested on one type of asphalt concrete with the application on a more hydrophilic aggregate type. Results gained during this experimental study are presented in the paper using as a criterion indirect tensile strength ratio determined either by EN 12697-12 or by modified procedure according to AASHTO T283. In parallel because of elevated temperatures used during ageing suitable covering of cylindrical test specimens was analyzed as well to avoid unnecessary deformations or even disintegration of the tested specimens. For this reason two types of protective collar were chosen – PVC and thin steel mash – in both cases fixed by plastic belts. It is assumed that steel mash can better simulate the effect of ageing keeping the envelope partly free for direct contact with hot air and pressure. Results of this comparison are presented in this paper as well.
Klasifikace
Druh
J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
JM - Inženýrské stavitelství
OECD FORD obor
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Návaznosti výsledku
Projekt
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Návaznosti
S - Specificky vyzkum na vysokych skolach
Ostatní
Rok uplatnění
2016
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Transportation Research Procedia
ISSN
2352-1465
e-ISSN
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Svazek periodika
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Číslo periodika v rámci svazku
14
Stát vydavatele periodika
NL - Nizozemsko
Počet stran výsledku
10
Strana od-do
768-777
Kód UT WoS článku
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EID výsledku v databázi Scopus
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