Recovery of Biomass Fly Ash and HDPE in Innovative Synthetic Lightweight Aggregates for Sustainable Geotechnical Applications

Daniela D. Porcino, Francesco Mauriello, Lucio Bonaccorsi, Giuseppe Tomasello, Emilia Paone and Angela Malara
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Daniela D. Porcino: Dipartimento di Ingegneria Civile, dell’Energia, dell’Ambiente e dei Materiali, Università “Mediterranea”, 89122 Reggio Calabria, Italy
Francesco Mauriello: Dipartimento di Ingegneria Civile, dell’Energia, dell’Ambiente e dei Materiali, Università “Mediterranea”, 89122 Reggio Calabria, Italy
Lucio Bonaccorsi: Dipartimento di Ingegneria Civile, dell’Energia, dell’Ambiente e dei Materiali, Università “Mediterranea”, 89122 Reggio Calabria, Italy
Giuseppe Tomasello: Dipartimento di Ingegneria Civile, dell’Energia, dell’Ambiente e dei Materiali, Università “Mediterranea”, 89122 Reggio Calabria, Italy
Emilia Paone: Dipartimento di Ingegneria Industriale (DIEF), Università di Firenze, Via di S. Marta, 3-50139 Firenze (FI), Italy
Angela Malara: Dipartimento di Ingegneria Civile, dell’Energia, dell’Ambiente e dei Materiali, Università “Mediterranea”, 89122 Reggio Calabria, Italy

Sustainability, 2020, vol. 12, issue 16, 1-16

Abstract: Sustainable development principles aim to re-utilize wastes to reduce their impact on the environment. In this context, the present contribution shows preliminary results on the preparation of innovative synthetic lightweight aggregates, starting from biomass-derived fly ash and high-density polyethylene (HDPE), to be used in geotechnical applications. The present work focuses on the manufacturing process of aggregate blends (including the selection of the right proportions of the two components) as well as on the relative determination of (i) physical–chemical properties (i.e., chemical composition, morphological analysis, mineral leachability, water absorption, specific gravity, grain size distribution); (ii) permeability features and (iii) mechanical properties (one-dimensional compression and shear strength behavior). The results, gathered from the new synthetic lightweight aggregates and compared with the corresponding ones obtained in a previous study conducted on natural and synthetic lightweight aggregates, appear promising for a potential utilization in geotechnical engineering.

Keywords: lightweight aggregates; recycling materials; HDPE; biomass fly ash; chemical and physical analyses; geotechnical characterization (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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