Influence of aging on oil rejuvenated binder

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F17%3APU122493" target="_blank" >RIV/00216305:26110/17:PU122493 - isvavai.cz</a>

Result on the web

<a href="http://www.ttp.net/978-3-0357-1033-5.html" target="_blank" >http://www.ttp.net/978-3-0357-1033-5.html</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.737.528" target="_blank" >10.4028/www.scientific.net/KEM.737.528</a>

Result language

angličtina

Original language name

Influence of aging on oil rejuvenated binder

Original language description

The presence of aged binder in asphalt mixtures containing high amount of Reclaimed Asphalt Pavement (RAP) is the main reason why the technology of oil rejuvenation (modification) was introduced. When the recycling rate generally exceeds 25 %, it is essential to modify aged binder characteristics in order to guarantee that asphalt mixture performance remains the same as in the case of the virgin mixture. Reclaimed asphalt binder is much stiffer compared to the virgin binder and therefore it is perceived to be susceptible to cracking at low temperatures. The aim of this study is to compare various oil modifiers and evaluate their effects on rheological characteristics before and after the aging. Four different oils were blended together with an artificially aged binder in concentrations which ensure that resulting blends have similar properties as the virgin reference binder. The effect of aging during the production process was simulated by the RTFOT (Rolling Thin Film Oven Test) procedure, long term aging was then simulated by modified RTFOT test with prolonged exposition period. The blends performance assessment was carried out by the frequency sweep test on the Dynamic Shear Rheometer (DSR) and by the evaluation of the critical temperatures on the Bending Beam Rheometer (BBR). The results indicate that addition of oil rejuvenators did not negatively influence binder stiffness at higher temperatures and at the same time enhanced its properties at low temperatures significantly. However, due to the aging effect the difference between stiffness critical temperature and m-value critical temperature increase considerably which might indicate decreasing colloidal stability and lower ability to relax induced stresses.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20102 - Construction engineering, Municipal and structural engineering

Project

<a href="/en/project/LO1408" target="_blank" >LO1408: AdMaS UP – Advanced Building Materials, Structures and Technologies</a><br>

Continuities

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

Publication year

2017

Confidentiality

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

Article name in the collection

Engineering Materials and Technology

ISBN

978-3-0357-1033-5

ISSN

1013-9826

e-ISSN

—

Number of pages

7

Pages from-to

528-534

Publisher name

Trans Tech Publications Ltd

Place of publication

neuveden

Event location

Phuket

Event date

Oct 14, 2016

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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