RT info:eu-repo/semantics/article
T1 Paving with Precast Concrete Made with Recycled Mixed Ceramic Aggregates: A Viable Technical Option for the Valorization of Construction and Demolition Wastes (CDW)
A1 Juan Valdés, Andrés
A1 García González, Julia
A1 Rodríguez Robles, Desirée
A1 Guerra Romero, Manuel Ignacio
A1 López Gayarre, Fernando
A1 De Belie, Nele
A1 Morán del Pozo, Julia María
A2 Ingenieria Agroforestal
K1 Ingeniería agrícola
K1 Ingeniería forestal
K1 Precast Paving Elements
K1 Recycled Concrete
K1 Recycled Mixed Ceramic Aggregates
K1 Mechanical
K1 Microstructural
K1 And Durability Characterization
AB materialsArticlePaving with Precast Concrete Made with RecycledMixed Ceramic Aggregates: A Viable TechnicalOption for the Valorization of Construction andDemolition Wastes (CDW)Andrés Juan-Valdés 1,* , Julia García-González 2, Desirée Rodríguez-Robles 3,Manuel Ignacio Guerra-Romero 1, Fernando López Gayarre 4, Nele De Belie 5and Julia M. Morán-del Pozo 11 Department of Agricultural Engineering and Sciencies, University of León, 24071 León, Spain;ignacio.guerra@unileon.es (M.I.G.-R.); julia.moran@unileon.es (J.M.M.-d.P.)2 Department of Agriculture and Feeding, University of La Rioja, 26006 Logroño, Spain;julia.garciag@unirioja.es3 Department of Agronomy and Forestry Engineering, University of Extremadura, 06007 Badajoz, Spain;desireerodriguez@unex.es4 Department of Construction, Campus de Gijón, University of Oviedo, 33203 Gijón, Spain; gayarre@uniovi.es5 Magnel Laboratory for Concrete Research, Ghent University, 9052 Ghent, Belgium; Nele.DeBelie@ugent.be* Correspondence: andres.juan@unileon.es; Tel.: +34-987-291000Received: 4 December 2018; Accepted: 18 December 2018; Published: 21 December 2018                 Abstract: This research aimed to prove the feasibility of producing two types of precast elementswidely used in construction, such as curbstones and paving blocks, using recycled concrete madewith a 50% substitution of the natural gravel by recycled mixed aggregates with a significant ceramiccontent (>30%). In order to prove the quality of such mass concrete recycled precast elements, twodifferent mixes were used: the first one was a conventional concrete mix provided by Prefabricadosde Hormigón Pavimentos Páramo S.L., one of the collaborating companies in this study, and theother was a mixture in which wt 50% of the natural coarse aggregates were substituted for recycledmixed aggregates ceramic (RMAc). This recycled aggregate is a heterogeneous mixture of unboundaggregates, concrete, ceramic, etc., used as a secondary recycled aggregate and commonly producedin a lot of recycling plants in many European countries. This material was supplied by Tecnologíay Reciclado S.L., the other collaborating company. Both mixtures were representative in order toestablish the comparative behavior between them, taking into account that smaller percentages ofreplacement of the natural with recycled aggregates will also produce good results. This percentage ofsubstitution represents a high saving of natural resources (gravel) and maintains a balanced behaviorof the recycled concrete, so this new material can be considered to be a viable and reliable optionfor precast mass concrete paving elements. The characterization of the recycled precast elements,covering mechanical, microstructural, and durability properties, showed mostly similar behaviorwhen compared to the analogous industrially-produced pieces made with conventional concrete.
PB MDPI
LK https://hdl.handle.net/10612/19339
UL https://hdl.handle.net/10612/19339
NO Juan Valdés, A.; García González, J.; Rodríguez Robles, D.; Guerra Romero, M. I.; López Gayarre, F.; De Belie, N.; Morán Del Pozo, J. M. (2018). Paving with Precast Concrete Made with Recycled Mixed Ceramic Aggregates: A Viable Technical Option for the Valorization of Construction and Demolition Wastes (CDW). Materials, 12(1), https://doi.org/10.3390/MA12010024
DS BULERIA. Repositorio Institucional de la Universidad de León
RD 30-jun-2024