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(Automatic translation)

Influence of temperature and manufacturing lime content in bituminous mixtures aging: a real case

Hugo Daniel Bianchetto
Associate Professor Area Communication Routes
National Technological University Faculty Regional Avellaneda (Argentina)
Professional Assistant, Laboratory Road Pavement and Engineering (LaPIV)
Faculty of Engineering, National University of La Plata,
Red Ibero-Latin American Highway Research

Alfredo Ignacio ASURMENDI
LMA Servicios Industriales, La Plata Graduate Assistant Communication Pathways National Technological University, Avellaneda Regional School (Argentina)

ABSTRACT
The aging of asphalt mixtures manifests itself in transformation processes experienced by the bituminous binder and is one of the causes of the failure of the pavement.

An effective way to delay the onset of this deterioration factor is active fillers including calcium mineral mixtures origin, as they improve their physicochemical properties benefiting the resistance to aging.

This paper presents the results of a real case of production and laying of an asphalt mixture dense in Buenos Aires are analyzed, varying its composition (with and without the contribution of hydrated lime as filler) and using two different manufacturing temperatures, to assess the influence of these variables on the short term aging experienced.

KEYWORDS:
asphalt mix, bituminous binder, aging, filler, active filler, hydrated lime, critical filler concentration, paving, urban paving.

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