Search results for "Recycle"

Environmental sustainability and energy assessment of bituminous pavements made with unconventional materials

2019

The increasing sensibility towards the questions related to climate change has made the scientists and technicians aware of the need to incorporate the principles of sustainable development into the road construction sector. In this view, recycled materials in road pavements and technologies to decrease the overall carbon footprint have become more and more important. Based on the ISO14040 series, the overall purpose of this study is calculating, by means of a systemic approach, the life-cycle energy and the carbon footprint of road pavement solutions. To this aim, several alternatives in terms of bituminous mixtures (warm mix asphalt, reclaimed asphalt pavements, waste plastics) were consi…

FORMULATION OF LIME MORTARS BASED ON NATURAL FIBERS AND WASTE MATERIALS FOR MORE SUSTAINABLE BUILDINGS

2019

Nowadays sustainability is one of the main concept in building construction, both considering energy saving buildings and life cycle assessment of building materials. According to these considerations, in this work the use of recycled and waste materials to produce a binder and the use of a natural fiber as reinforcement are investigated to obtain a sustainable mortar. Particularly, lime is obtained by kilning waste marble slurry from marbles quarries in western Sicily; pozzolanic aggregate is obtained by grinding glass powder from urban waste collection; natural fibers come from a widespread grass: Ampelodesmos Mauritanicus also known as diss. Scanning electron microscopy and helium picnom…

Repeated Load Triaxial Testing of Recycled Excavation Materials Blended with Recycled Phyllite Materials

2022

Recycled Excavation Materials (REM) are becoming viable alternative construction resources due to their economic benefits. However, REM may be composed of weak rocks, e.g., phyllites, limiting the use in a base layer. The present paper attempts to further the knowledge of the mechanical performance of REM by performing Repeated Load Triaxial Tests (RLTT). REM are mixed with Recycled Phyllite Materials (RPM) in systematic blends of 0%, 25%, 50%, and 100%. The batches’ resilient modulus (MR) and permanent deformation (PD) characteristics were assessed to establish the maximum RPM allowed into REM while maintaining the required performance. Hicks and Monismith’s and Uzan’s mo…

Re-think, Re-load, Re-cycle: Mediterranean Urban Metamorphosis

2013

Metamorphosis is the new and powerful keyword in time of crisis. We are not undergoing a mere -even though dramaticpassing situation, but we are living in a crisis which requires a metamorphosis of the ecological, cultural, economic, social and political systems to get out of it other than we were when entering it. The metamorphosis will have to be mainly urban, because we are now in the Urban Age in which more than half the population live and work in cities, at levels exceeding 80% in Europe. The city, as the predominant form of inhabiting, is invested with the “responsibility” of producing innovative, more sustainable, intelligent and creative life styles, able of generating the innovati…

Re-cyclical Urbanism. Visions, Paradigms and Projects for the Circular Metamorphosis

2017

The European Commission has clearly stated that more intelligent, sustainable and competitive development requires a paradigm shift in which the territory is construed as a primary resource, considered the holder of “development cells”, which are too often underused or mystified with regard to their real potential for use (EC, Directorate-General for Research and Innovation, 2012). Cities designed and built on land rent — on which Italy set a benchmark — need to be replaced with cities of social and cultural profitability, value creation and jobs production. Cities that recycle already-used land to avoid energy waste, smarter cities — not just technologically, but also wiser and more sentie…

Evaluating the effect of mineralogy and mechanical stability of recycled excavation materials by Los Angeles and micro-Deval test

2021

This paper presents the findings of the mechanical performance of recycled excavation materials (REM). The aim was to document the stable performance of REM and to suggest its suitability for unbound applications. Test operations were performed at different schedules with the Los Angeles (LA) and micro-Deval (MD) test machine. X-ray diffraction (XRD) analysis was performed to examine the effect of mineralogy on the performance of REM. The results showed that REM showed consistent LA performance, but significant variations were observed in MD values. XRD results showed that up to 20% of chlorite and mica minerals had no influence on the LA performance of REM.

Formulation of agricultural films by using of the recycled polymers: resistance to the photo-oxidation

2008

RE-CYCLE ITALY. PMO RE-VERSE. Non c'è forma che non si trasformi. Palermo, città come esperimento.

2014

Non c’è forma che non si trasformi, titolava così “Il Sole 24 Ore” un articolo di Anna Li Vigni , studiosa di estetica, apparso nel luglio del 2011. Mi pare una formulazione emblematica per dare l’incipit a questa mia breve nota, ad introduzione di una attività di che vedrà impegnati studiosi, architetti e studenti intorno a temi e questioni che troveranno un campo di indagine privilegiato nel territorio di Palermo. Palermo quindi città come esperimento, in particolare una sua porzione significativa e strategica per il suo sviluppo: il sistema della Costa Sud, da Sant’Erasmo alla borgata marinara di Aspra. Il tema del fronte mare rappresenta per la grande metropoli siciliana un luogo paradi…

Performance-based characterization of recycled polymer modified asphalt mixture

2021

Due to the introduction of secondary materials, the asphalt mixtures to be designed and tested in our laboratories are constantly becoming much more complex than traditional asphalt mixtures making difficult to use conventional laboratory procedure and/or predict expected results. This study proposes a comprehensive characterization of asphalt mixture modified with recycled polymer compound by using both wet and dry process proposing adjustments to laboratory mixing and sample compaction procedure. Accordingly, three AC20 Hot Asphalt Mixture (HMA) were designed and their conventional and performance related properties were assessed by looking at a) Indirect Tensile test (ITS) a) moisture da…

Towards storage-stable high-content recycled tyre rubber modified bitumen

2018

The addition of crumb rubber particles as bitumen modifier can be currently considered as a well-established alternative to conventional polymers for bitumen modification. However, Recycle Tyre Rubber (RTR) modified binders still present drawbacks such as poor mix workability and hot storage stability. Within this study the authors try unlocking the full potential of devulcanised tyre rubber-heavy oils blend, named Liquid Rubber (LR), by exploring the possibility of tailoring recycled polymer modified bitumen with unconventional high-content of RTR and designed to overcome the above mentioned technological problems of RTR modified bitumen while keeping its advantages. Results show that LR-b…