Impact of selected WMA additives on normal PMB used for a standardized SMA

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F16%3A00300062" target="_blank" >RIV/68407700:21110/16:00300062 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21730/16:00300062

Výsledek na webu

<a href="http://guarant.topinfo.cz/ee2016/download/proceedings/data/c351.html" target="_blank" >http://guarant.topinfo.cz/ee2016/download/proceedings/data/c351.html</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.14311/EE.2016.351" target="_blank" >10.14311/EE.2016.351</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Impact of selected WMA additives on normal PMB used for a standardized SMA

Popis výsledku v původním jazyce

WMA techniques are well known for many years, even if still not increasingly popular in Europe. In the Czech Republic so far these techniques – mainly different types of wax based additives and surfactants – were used for asphalt concrete and usually in combination with a normal pen grade (70/100 or 50/70). As part of an ongoing research the focus was laid on SMA mixes which are as in any other country used mainly as a top wearing course for pavements with highest loadings and life-time expectations. Even if it is still allowed to use normal distilled bitumen, the best effect is achieved if PMBs are applied. For this reason a typical mix design for SMA11 mix was selected and more than 15 different binders have been used divided in three groups – two where effect of different WMA additives was analysed on PMB 25/55-55 of two selected origins and last group containing a more modified binder (not for WMA) and a 50/70 binder modified by PPA. As WMA additives different waxes have been used, selected surfactants and a nano-based additive. Firstly all bituminous binders were analysed by empirical tests, dynamic viscosity, MSCR and frequency sweep test. Then the mixes were prepared with a temperature reduced by 20-25°C in comparison to reference mix, For all mixes voids content, stiffness, ITSR, rutting and crack propagation was analysed and will be summarized in the paper.

Název v anglickém jazyce

Impact of selected WMA additives on normal PMB used for a standardized SMA

Popis výsledku anglicky

WMA techniques are well known for many years, even if still not increasingly popular in Europe. In the Czech Republic so far these techniques – mainly different types of wax based additives and surfactants – were used for asphalt concrete and usually in combination with a normal pen grade (70/100 or 50/70). As part of an ongoing research the focus was laid on SMA mixes which are as in any other country used mainly as a top wearing course for pavements with highest loadings and life-time expectations. Even if it is still allowed to use normal distilled bitumen, the best effect is achieved if PMBs are applied. For this reason a typical mix design for SMA11 mix was selected and more than 15 different binders have been used divided in three groups – two where effect of different WMA additives was analysed on PMB 25/55-55 of two selected origins and last group containing a more modified binder (not for WMA) and a 50/70 binder modified by PPA. As WMA additives different waxes have been used, selected surfactants and a nano-based additive. Firstly all bituminous binders were analysed by empirical tests, dynamic viscosity, MSCR and frequency sweep test. Then the mixes were prepared with a temperature reduced by 20-25°C in comparison to reference mix, For all mixes voids content, stiffness, ITSR, rutting and crack propagation was analysed and will be summarized 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/TA04031255" target="_blank" >TA04031255: Vývoj funkčních asfaltových pojiv pro teplé asfaltové směsi se zvýšeným podílem asfaltového R-materiálu</a><br>

Návaznosti

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

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of 6th Eurasphalt & Eurobitume Congress,1st - 3rd June 2016

ISBN

978-80-01-05962-3

ISSN

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e-ISSN

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Počet stran výsledku

14

Strana od-do

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Název nakladatele

Czech Technical University

Místo vydání

Prague

Místo konání akce

Praha

Datum konání akce

1. 6. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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