305
Views
3
CrossRef citations to date
0
Altmetric
Articles

Viscoelastic behaviour of asphalt modified by grafted tri-block copolymers: predictions of fractional rheological models

, , &
Pages 730-744 | Received 11 Jan 2013, Accepted 09 Jul 2014, Published online: 04 Sep 2014
 

Abstract

Blends of asphalt with three maleic anhydride-modified triblock copolymers are prepared and analysed in detail for potential use in pavement construction. These blends are compared with those made with the copolymers without chemical modification. The use of grafted polymers improves the conventional properties of blends made with the asphalt and precursor polymers, such as penetration, softening point, storage stability at high temperature and the rheological properties. In addition, blends made with the chemically modified polymers present biphasic morphology with improved dispersion and interconnected phases. Semi-empirical models corresponding to a constitutive equation with fractional derivatives are proposed to predict the linear viscoelastic properties of the blends using few parameters for each temperature. The fractional Kelvin, fractional standard linear solid and fractional Maxwell models are shown to predict appropriately the linear viscoelastic properties from 25 to 75°C at frequencies from 0.1 to 100 rad/s.

Log in via your institution

Log in to Taylor & Francis Online

PDF download + Online access

  • 48 hours access to article PDF & online version
  • Article PDF can be downloaded
  • Article PDF can be printed
USD 61.00 Add to cart

Issue Purchase

  • 30 days online access to complete issue
  • Article PDFs can be downloaded
  • Article PDFs can be printed
USD 225.00 Add to cart

* Local tax will be added as applicable

Related Research

People also read lists articles that other readers of this article have read.

Recommended articles lists articles that we recommend and is powered by our AI driven recommendation engine.

Cited by lists all citing articles based on Crossref citations.
Articles with the Crossref icon will open in a new tab.