Search results for " Recycle"
showing 10 items of 35 documents
Environmentally appraising different pavement and construction scenarios: A comparative analysis for a typical local road
2015
Abstract The aim of this work is to carry out a comparative analysis of environmental impacts for different scenarios of a typical local road. Life Cycle Assessment (LCA) is the modeling tool used to quantify and characterize comparative environmental impacts. In carrying out this specific application of the LCA, different road construction techniques were considered with regards to the whole structure and compared in order to identify the best alternative in terms of environmental sustainability. So far, in fact, typical LCA frameworks of roads have focused on recycled materials for pavement layers only, thus neglecting study of the materials used in the embankment or in the subgrade. In t…
Into the world of e-waste: mobility among e-scrappers in Nigeria
2017
AbstractIn the management of e-waste, mobility of e-scrappers plays a pivotal role, especially in e-waste acquisition and sales of extracted materials. This research examines the relationship between e-scrappers and the locations of their work by analysing the influence of environmental and social factors on their mobility behaviour in Nigeria. A qualitative analysis of video material collected from 29 male e-scrappers in Nigeria between 2014 and 2015 reveals that e-waste has inherent properties that intermittently mobilise e-scrappers to search for recyclable and valuable electronic trash. Applying the new mobilities paradigm and the new materialism theory, we present that e-scrappers’ mob…
Recommendation of RILEM TC237-SIB: protocol for characterization of recycled asphalt (RA) materials for pavement applications
2018
This recommendation proposes an experimental protocol to characterize Recycled Asphalt (RA) materials. The guidelines presented in this document are based on the results of a Round Robin Test (RRT) organized by the RILEM Technical Committee 237-SIB “Testing and characterization of sustainable innovative bituminous materials and systems” and provide information on the testing procedure, data analysis and indications for the preparation of a test report.
6th Workshop on The New Boundaries of Structural Concrete 2022 University of Salento – ACI Italy Chapter
2022
Geopolymer cement is a viable alternative to ordinary cement in order to significantly reduce the emission of carbon dioxide related to the construction of concrete structures. Being made up of waste materials, geopolymer cement also helps to limit the use of new raw materials, leading to a considerable reduction of the environmental impact of the construction industry. During the last years, the use of Geopolymer Recycled Aggregate Concrete (GRAC) in structural members has been studied in several recent experimental research in which the behavior of either the material or structural member was investigated. A review paper will be done critically to compile the present research on the use o…
Impact of nanoparticles on the environmental sustainability of polymer nanocomposites based on bioplastics or recycled plastics – A review of life-cy…
2022
Adding nanoparticles to a host polymer can lead to performance improvements that can be twice as beneficial to the environment: first, sustainable nanocomposites based on bioplastics or recycled plastics could replace ubiquitous petroleum-based polymers; second, substantial plastic saving could be achieved by profiting from the superior specific properties of the nanocomposites. Nevertheless, the inherent environmental burden of nanoparticles can compromise the expected benefits. Here we address the controversial issue of the environmental sustainability of “green” polymer nanocomposites based on bioplastics and recycled plastics. A critical review of life-cycle assessment studies regarding…
Particle size based recovery of phosphorus from combined peat and wood fly ash for forest fertilization
2016
Abstract Correlations between the concentrations of P, K, and As with particle size in fly ash from power plants were examined with a viewpoint to obtain fractions suitable for forest fertilization. Fly ash samples from several CHP plants were fractionated by using four sieves and the five fractions were analyzed by ICP-OES; it was found that both P and K are concentrated in smallest size (
From Buildings' End of Life to Aggregate Recycling under a Circular Economic Perspective: A Comparative Life Cycle Assessment Case Study
2021
The demolition of buildings, apart from being energy intensive and disruptive, inevitably produces construction and demolition waste (C&Dw). Unfortunately, even today, the majority of this waste ends up underexploited and not considered as valuable resources to be re-circulated into a closed/open loop process under the umbrella of circular economy (CE). Considering the amount of virgin aggregates needed in civil engineering applications, C&Dw can act as sustainable catalyst towards the preservation of natural resources and the shift towards a CE. This study completes current research by presenting a life cycle inventory compilation and life cycle assessment case study of two buildin…
Palermo Blue/Green Gateway. Nove porte per la knowledge city
2015
Il saggio esplora le trasformazioni della linea di costa dell'area metropolitana di Palermo e traccia linee ed indirizzi di trasformazione legate alla rigenerazione di nove porti intesi come nuove porte di accesso alla città stessa. Il saggio presenta l'ipotesi di trasformazione e rigenerazione urbana ed architettonica che l'autore ha elaborato in occasione della candidatura di Palermo a Capitale Europea della Cultura per il 2019, in qualità di membro della cabina di regia e del coordinamento scientifico della candidatura. Lo scritto porta avanti una ipotesi teorica e di ricerca fondata sulla postproduzione urbana e architettonica e sulla knowledge city come tema trainante per la rigenerazi…
Il confronto delle idee. Visioni progettuali per un recupero possibile (The comparision of ideas. Design concepts for a possible recovery)
2016
Il saggio dà conto e avanza una sintesi dell'esperienza di ricerca attuata nell'ambito del Dipartimento di Architettura dell'Università di Palermo e finalizzata all'individuazione di possibili scenari e di visioni progettuali per il recupero del complesso della centrale termoelettrica "Tifeo" di Augusta, significativa opera di Giuseppe Samonà. La ricerca sottolinea come progetto architettonico e progetto di paesaggio risultino (anche in questo caso) inscindibili e legati da stringenti refluenze reciproche: restauro dell’edificio e “restauro” del paesaggio si presentano come azioni concorrenti e interagenti, mirate verso un unico obiettivo comune, che può attuarsi solo attraverso una rifless…
Re_Power station: una ricerca per la Centrale di Augusta
2016
Lo scritto descrive le modalità dell'impostazione data al lavoro di ricerca sulla centrale "Tifeo" di Augusta, condotto nell'ambito del Dipartimento di Architettura dell'Università di Palermo e di concerto con l'ENEL. La ricerca era finalizzata alla definizione di una ricerca di base per lo studio di fattibilità del recupero della Centrale di Augusta, con l’obiettivo di definire alcuni possibili scenari progettuali entro cui intervenire, anche attraverso specifici progetti di architettura. L’ipotesi di lavoro attorno a cui ci si è mossi, che si è fondata sull’impostazione metodologica assunta negli anni dal Dottorato di ricerca in Architettura/Progettazione Architettonica, ha visto il proge…