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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Bergh, Wim Van Den
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2022Thermal performance of a controllable pavement solar collector prototype with configuration flexibilitycitations
- 2021Introducing an improved testing method to evaluate the fatigue resistance of bituminous mortars
- 2021Investigation of the effect of short-term ageing on rejuvenated reclaimed asphalt binder
- 2021Exploring the oxidative mechanisms of bitumen after laboratory short- and long-term ageingcitations
- 2021Influence of soft binder and rejuvenator on the mechanical and chemical properties of bituminous binderscitations
- 2020Cementitious binders and reclaimed asphalt aggregates for sustainable pavement base layerscitations
- 2020Experimental investigation of the oxidative ageing mechanisms in bitumencitations
- 2018Recycling. In : Testing and Characterization of Sustainable Innovative Bituminous Materials and Systemscitations
- 2017The influence of mixture composition, adhesion promotor and compaction degree on the groove stability of grooved Marshall asphaltcitations
- 2016Identification of pavement material properties using a scanning laser Doppler vibrometercitations
Places of action
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article
Cementitious binders and reclaimed asphalt aggregates for sustainable pavement base layers
Abstract
Reclaimed asphalt pavement (RAP) has been increasingly used in the past few decades as a replacement of natural aggregates in pavement layers. However, low replacement level is employed, and consequently, large quantities of RAP are still left unused. Researchers often neglect foundation pavement layers, but it has higher prospects to consume recycled materials due to their increased thickness. RAP has inferior prop-erties compared to natural aggregates; therefore, cementitious binders are used to produce a (sub)base layer using high volumes of RAP. This paper reviews the use of RAP aggregates with cementitious materials for pavement foundation layers. Special attention is given to the use of alkali-activated materials (AAM) as a binder in substitution for Portland cement (PC). This review discussed the properties of fresh and hardened RAP in cementitious matrices, as well as changes in the microstructure. The biggest challenge on the use of RAP on both systems, RAP-PC and RAP-AAM, is the bond issues caused by the presence of asphalt on the surface of the aggregates. Some researches addressed how physical or chemical pre-treatments to the RAP could improve the adherence to the paste, but few studies focused on the optimisation of the binder. A literature survey indicated that an optimised mix design, durability studies and life cycle assessment (LCA) are important research needs towards the development of RAP-AAM. Despite the lack of research evidence, RAP-AAM is a promising solution for foundation pavement layers. (C) 2020 Elsevier Ltd. All rights reserved.