Influence of Overheating Phenomenon on Bitumen and Asphalt Mixture Properties

Michał Sarnowski , Karol Kowalski , Jan Król , Piotr Radziszewski

Abstract

In the course of manufacturing, transport and installation, road bitumens and asphalt mixtures can be exposed to the impact of elevated process temperatures exceeding 240 °C. This mainly applies to the mixtures used for road pavements and bridge deck insulation during adverse weather conditions. The heating process should not change the basic and rheological properties of binders and the asphalt mixtures that to a degree cause the degradation of asphalt pavement durability. The work involved analyzing the properties of non-modified bitumens and SBS polymer modified bitumens, heated at temperatures of 200 °C, 250 °C and 300 °C for 1 h. Next, the asphalt mixtures were heated in the same temperatures. Based on the developed Overheating Degradation Index (ODI) it was demonstrated that polymer-modified bitumens were characterized by higher overheating sensitivity A(ODI) than non-modified bitumens, which was confirmed by mixture test results. Overheating limit temperatures T(ODI) were determined, which in the case of polymer-modified bitumens are up to 20 °C lower than for non-modified bitumens. When the temperature increases above T(ODI), loss of viscoelastic properties occurs in the material which causes, among other effects, a loss of resistance to fatigue cracking
Author Michał Sarnowski (FCE / IRB)
Michał Sarnowski,,
- The Institute of Roads and Bridges
, Karol Kowalski (FCE / IRB)
Karol Kowalski,,
- The Institute of Roads and Bridges
, Jan Król (FCE / IRB)
Jan Król,,
- The Institute of Roads and Bridges
, Piotr Radziszewski (FCE / IRB)
Piotr Radziszewski,,
- The Institute of Roads and Bridges
Journal seriesMaterials, ISSN 1996-1944, (A 35 pkt)
Issue year2019
Vol12
No4
Pages1-19
Publication size in sheets0.9
Keywords in English bitumen; asphalt mixture; overheating; SBS
ASJC Classification2500 General Materials Science
DOIDOI:10.3390/ma12040610
Languageen angielski
File
influence.pdf 5.22 MB
Score (nominal)35
ScoreMinisterial score = 35.0, 14-07-2019, ArticleFromJournal
Publication indicators Scopus Citations = 0; WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2017 = 1.285; WoS Impact Factor: 2017 = 2.467 (2) - 2017=3.325 (5)
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