6533b82cfe1ef96bd128f47f

RESEARCH PRODUCT

A new procedure to determine the rheological properties of RAP binder and corresponding bituminous blends

Augusto Cannone FalchettoDavide Lo PrestiMichael P. WistubaCristina RiccardiAna Jiménez Del Barco CarriónMassimo Losa

subject

Materials science0211 other engineering and technologiesModulus02 engineering and technologyMortarsRAP binderBack calculationVoigt modelRheologyAsphalt pavement021105 building & construction0502 economics and businessGeneral Materials ScienceComposite materialDSRRAP binder DSR Mortars Nielsen model Voigt model Back-calculationCivil and Structural Engineering050210 logistics & transportation05 social sciencesBack-calculation; DSR; Mortars; Nielsen model; RAP binder; Voigt model; Civil and Structural Engineering; Building and Construction; Materials Science (all)Building and ConstructionBack-calculationNielsen modelAsphaltKelvin–Voigt materialDynamic shear rheometerMaterials Science (all)Mortar

description

Abstract In this paper, a new and simple approach to estimate the rheological properties of Reclaimed Asphalt Pavement (RAP) binder is proposed to overcome the limitations of the conventional extraction procedure. This method is based on Dynamic Shear Rheometer tests performed on mortars composed of RAP fine fraction and virgin binder, together with a new back-calculation solution. The properties of the bituminous blends of virgin and RAP binders are obtained with a modified Nielsen model. The Voigt model is then successfully used to estimate complex modulus and phase angle of the RAP binder from the properties of the back-calculated binder blend. This procedure would prevent the need of RAP binder extractions to determine its properties, which is time-consuming and might modify the actual binder characteristics.

yearjournalcountryeditionlanguage
2017-11-01Construction and Building Materials
https://doi.org/10.1016/j.conbuildmat.2017.07.204