Study of the effect of four warm mix asphalt additives on bitumen modified with 15% crumb rubber

Rodríguez Alloza, Ana María and Gallego Medina, Juan and Pérez Díaz, Juan Ignacio (2013). Study of the effect of four warm mix asphalt additives on bitumen modified with 15% crumb rubber. "Construction and building materials", v. 43 ; pp. 300-308. ISSN 0950-0618. https://doi.org/10.1016/j.conbuildmat.2013.02.025.

Description

Title: Study of the effect of four warm mix asphalt additives on bitumen modified with 15% crumb rubber
Author/s:
  • Rodríguez Alloza, Ana María
  • Gallego Medina, Juan
  • Pérez Díaz, Juan Ignacio
Item Type: Article
Título de Revista/Publicación: Construction and building materials
Date: June 2013
ISSN: 0950-0618
Volume: 43
Subjects:
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ingeniería Civil: Hidráulica y Energética [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Due to a growing concern over global warming, the bituminous mixture industry is making a constant effort to diminish its emissions by reducing manufacturing and installation temperatures without compromising the mechanical properties of the bituminous mixtures. The use of mixtures with tyre rubber has demonstrated that these mixtures can be economical and ecological and that they improve the behaviour of the pavements. However, bituminous mixtures with a high rubber content present one major drawback: they require higher mixing and installation temperatures due to the elevated viscosity caused by the high rubber content and thus they produce larger amounts of greenhouse gas emissions than conventional bituminous mixtures. This article presents a study of the effect of four viscosity-reducing additives (Sasobit®, Asphaltan A®, Asphaltan B® and Licomont BS 100®) on a bitumen modified with 15% rubber. The results of this study indicate that these additives successfully reduce viscosity, increase the softening temperature and reduce penetration. However, they do not have a clear effect on the test for elastic recovery and ductility at 25 °C.

More information

Item ID: 29454
DC Identifier: http://oa.upm.es/29454/
OAI Identifier: oai:oa.upm.es:29454
DOI: 10.1016/j.conbuildmat.2013.02.025
Official URL: http://www.sciencedirect.com/science/article/pii/S0950061813001426
Deposited by: Memoria Investigacion
Deposited on: 26 Jun 2014 11:37
Last Modified: 01 Jul 2015 22:56
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