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Strain-dependent behaviour of cold recycled material mixtures in cyclic compression tests

Author(s): ORCID
ORCID
Medium: journal article
Language(s): English
Published in: Materials and Structures, , n. 4, v. 57
DOI: 10.1617/s11527-024-02366-2
Abstract:

The purpose of the study is to evaluate strain-dependent behaviour of Cold Recycled Material (CRM) mixtures using three frameworks typically applied for Hot Mix Asphalt (HMA): linear viscoelastic (LVE) limits; non-linearity directions; changes in rheological model parameters. To this aim, the complex modulus of three CRM mixtures with different bitumen-to-cement ratio (0.2, 0.6 and 1.8) was measured in cyclic compression mode, at increasing level of axial deformation (from 35 to 195 μstrain) and at three temperatures (4, 20 and 40 °C). CRM mixtures showed strong strain dependent behaviour, which does not fully comply with the LVE hypothesis. LVE limit framework is applicable, but strain limits for CRM are different from HMA. Linearity direction framework does not give unique trend, hence it is not applicable in the same way as it was developed for HMA. The most promising framework for further analysis is the change in rheological model parameters, but it requires high number of performed tests.

Structurae cannot make the full text of this publication available at this time. The full text can be accessed through the publisher via the DOI: 10.1617/s11527-024-02366-2.
  • About this
    data sheet
  • Reference-ID
    10784618
  • Published on:
    20/06/2024
  • Last updated on:
    20/06/2024
 
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