Recycled Plastic and Cork Waste for Structural Lightweight Concrete Production
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AuthorParra Costa, Carlos José; Sánchez, Eva; Miñano Belmonte, Isabel; Benito Saorín, Francisco Javier; Hidalgo Torrano, Pilar
Knowledge AreaEcologíalTecnologías del Medio Ambiente
SponsorsThis research was funded by the Spanish Ministerio de Economia y Competitividad, through the Spanish Centre for Industrial Technological Development (CDTI), grant number IDI-20141102 granted to Cementos La Cruz S.L. The authors of this paper wish to express their gratitude to Cementos La Cruz, S.L. for their interest and support. Special thanks to Gabriel A. Ros, laboratory technician of the Technical University of Cartagena, Spain, for his invaluable assistance in carrying out the assays.
Bibliographic CitationParra C, Sánchez EM, Miñano I, Benito F, Hidalgo P. Recycled Plastic and Cork Waste for Structural Lightweight Concrete Production. Sustainability. 2019; 11(7):1876. https://doi.org/10.3390/su11071876
KeywordsRecycled plastic aggregate
Recycled cork aggregate
The use of waste materials as lightweight aggregates in concrete is highly recommended in seismic risk areas and environmentally recommended. However, reaching the strength needed for the concrete to be used structurally may be challenging. In this study four dosages were assayed: the first two-specimen had high cement content (550 and 700 kg/m(3) respectively), Nanosilica, fly ash and superplasticizer. These samples were high performance, reaching a strength of 100 MPa at 90 days. The other two mixtures were identical but replaced 48% of the aggregates with recycled lightweight aggregates (30% polypropylene, 18.5% cork). To estimate its strength and durability the mixtures were subjected to several tests. Compression strength, elasticity modulus, mercury intrusion porosimetry, carbonation, attack by chlorides, and penetration of water under pressure were analyzed. The compression strength and density of the lightweight mixtures were reduced 68% and 19% respectively; nonetheless, both ...
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