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Article

Preliminary Validation of Steel Slag-Aggregate Concrete for Rigid Pavements: A Full-Scale Study

1
Department of Civil Engineering, University of Burgos, 09001 Burgos, Spain
2
Department of Construction, University of Burgos, 09001 Burgos, Spain
3
Department of Civil, Environmental and Architectural Engineering (ICEA), University of Padua, 35131 Padua, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Chris Goodier
Received: 2 April 2021 / Revised: 16 April 2021 / Accepted: 20 April 2021 / Published: 22 April 2021
(This article belongs to the Special Issue Innovative Practices into Road Pavement Maintenance Management)
The high wear resistance and toughness of electric arc furnace slag (EAFS) means that this industrial by-product can successfully replace natural aggregate in hydraulic or bituminous concretes that withstand vehicle traffic. This article validates the use of concrete made with large amounts of EAFS for rigid pavements. Accordingly, three EAFS–concrete mixes made with metallic or synthetic fibers were designed. Their performance was studied through laboratory tests (compressive strength, modulus of elasticity, splitting tensile strength, and abrasion resistance) and field observations on full-scale slabs made with each of the studied mixes. All mechanical properties yielded adequate results for concrete for rigid pavements. The metallic fibers increased the strength and elastic stiffness by 7–10%, while the addition of synthetic fibers slowed the development of these properties over time. On the other hand, all the mixes allowed for a successful implementation of full-scale slabs, with none of them showing excessive deterioration after five years of exposure to the outdoor environment. Only minor cracking and some chips in the surface-treatment layer were detected. The strength development of the slabs and their slipperiness were adequate for use in high-speed pavements. The overall analysis of the results shows that concrete made with EAFS can be used in real rigid pavements. View Full-Text
Keywords: circular economy; sustainability; electric arc furnace slag; concrete for rigid pavements; siderurgic concrete; fiber-reinforced concrete; abrasion resistance; full-scale slab; outdoor environment; skid resistance circular economy; sustainability; electric arc furnace slag; concrete for rigid pavements; siderurgic concrete; fiber-reinforced concrete; abrasion resistance; full-scale slab; outdoor environment; skid resistance
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MDPI and ACS Style

Revilla-Cuesta, V.; Ortega-López, V.; Skaf, M.; Pasquini, E.; Pasetto, M. Preliminary Validation of Steel Slag-Aggregate Concrete for Rigid Pavements: A Full-Scale Study. Infrastructures 2021, 6, 64. https://0-doi-org.brum.beds.ac.uk/10.3390/infrastructures6050064

AMA Style

Revilla-Cuesta V, Ortega-López V, Skaf M, Pasquini E, Pasetto M. Preliminary Validation of Steel Slag-Aggregate Concrete for Rigid Pavements: A Full-Scale Study. Infrastructures. 2021; 6(5):64. https://0-doi-org.brum.beds.ac.uk/10.3390/infrastructures6050064

Chicago/Turabian Style

Revilla-Cuesta, Víctor, Vanesa Ortega-López, Marta Skaf, Emiliano Pasquini, and Marco Pasetto. 2021. "Preliminary Validation of Steel Slag-Aggregate Concrete for Rigid Pavements: A Full-Scale Study" Infrastructures 6, no. 5: 64. https://0-doi-org.brum.beds.ac.uk/10.3390/infrastructures6050064

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