Laboratory Compaction Study and Mechanical Performance Assessment of Half-Warm Mix Recycled Asphalt Mixtures Containing 100% RAP

Marcobal Barranco, José Ramón and Lizárraga Lopez, José Manuel and Gallego Medina, Juan (2019). Laboratory Compaction Study and Mechanical Performance Assessment of Half-Warm Mix Recycled Asphalt Mixtures Containing 100% RAP. "Materials", v. 12 (n. 12); pp. 1-25. ISSN 1996-1944. https://doi.org/10.3390/ma12121992.

Description

Title: Laboratory Compaction Study and Mechanical Performance Assessment of Half-Warm Mix Recycled Asphalt Mixtures Containing 100% RAP
Author/s:
  • Marcobal Barranco, José Ramón
  • Lizárraga Lopez, José Manuel
  • Gallego Medina, Juan
Item Type: Article
Título de Revista/Publicación: Materials
Date: 21 June 2019
ISSN: 1996-1944
Volume: 12
Subjects:
Freetext Keywords: Half-Warm Mix Recycled Asphalt Mixtures, 100% Recycling, Curing Treatment, Stiffness Modulus, Rutting, Fatigue
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ingeniería Civil: Transporte y Territorio
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The use of low-carbon and energy-efficient paving technologies is gaining worldwide acceptance in recent years as a means to encourage commitment towards more sustainable pavement management practices. However, there still remain some technical gaps regarding mix design procedures for the half-warm mix asphalt (HWMA) mixtures' preparation and characterization in the laboratory. To this end, three different laboratory compaction methods (e.g., static load, Marshall impactor, and gyratory compactor) were selected and put into assessment to define the most suitable compaction test method for half-warm mix recycled asphalt (HWMRA) mixtures with 100% reclaimed asphalt pavement (RAP). Posteriorly, the effect of four-accelerated curing treatments (0, 24, 48, and 72 h) on the mixtures' mechanical performance was investigated. Then, advanced mechanical characterization of the mixture performance was conducted to quantify the indirect tensile strength (ITS), stiffness modulus, rutting, and four-point bending (4PB) fatigue test. Thus, based on the authors? findings, the HWMRA mixtures with 100% RAP and emulsified bitumen exhibited proper volumetric (e.g., air voids and density) and mechanical behavior in terms of moisture damage, ITS, stiffness modulus, rutting, and fatigue cracking. These findings encourage greater confidence in promoting the use of these sustainable asphalt mixes for their use in road pavements or urban streets.

More information

Item ID: 55584
DC Identifier: http://oa.upm.es/55584/
OAI Identifier: oai:oa.upm.es:55584
DOI: 10.3390/ma12121992
Official URL: https://www.mdpi.com/1996-1944/12/12/1992
Deposited by: Memoria Investigacion
Deposited on: 26 Jun 2019 15:21
Last Modified: 26 Jun 2019 15:21
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