Impact of laboratory ageing on properties of warm mix asphalt with high reclaimed asphalt content

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F19%3A00326479" target="_blank" >RIV/68407700:21110/19:00326479 - isvavai.cz</a>

Result on the web

—

DOI - Digital Object Identifier

—

Result language

angličtina

Original language name

Impact of laboratory ageing on properties of warm mix asphalt with high reclaimed asphalt content

Original language description

Lately there are various environmental trends permeating into road constructions. Use of reclaimed materials, lowering the manufacturing and compaction temperature, elimination of emissions, etc. This study presents 13 different warm mix asphalt variants with up to 50 % reclaimed asphalt (RA). The compared asphalt mixtures differed in amount of used RA (0%, 30% and 50%), in the gradation of used paving grade bitumen (50/70 or 70/100) and in applied warm mix asphalt additives or used techniques. Used additives were based on silanes and on different types of waxes (FT paraffin, amide wax, PE wax). Additionally foamed bitumen technology was applied as well. The asphalt mixtures were sampled during the trial section paving. The asphalt mixtures were compacted by impact compactor (according to EN 12697-33) and alternatively by gyratory compactor (EN 12697-30). The specimens were tested and then subjected to artificial laboratory ageing according to prEN 12697-52. The test specimens were stored in the oven with constant circulation of air at temperature of 85 °C for 5 days. Additionally another set of specimens was prepared and subjected to ageing at 85 °C for 10 days. The test results for virgin, 5 days aged and 10 days aged specimens were compared to evaluate the influence of additives on ageing of the asphalt mixture. Determined tests were stiffness modulus, resistance to crack propagation (SCB test) and flexural strength.

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20101 - Civil engineering

Project

<a href="/en/project/TE01020168" target="_blank" >TE01020168: Centre for Effective and Sustainable Transport Infrastructure (CESTI)</a><br>

Continuities

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

Publication year

2019

Confidentiality

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

Article name in the collection

10th Malaysian Road Conference & Exhibition 2018

ISBN

—

ISSN

1757-899X

e-ISSN

1757-899X

Number of pages

10

Pages from-to

1-10

Publisher name

IOP Publishing

Place of publication

London

Event location

Kuala Lumpur

Event date

Oct 29, 2018

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

—