Search results for "PAV"

Factors affecting fish assemblages associated with gas platforms in the Mediterranean Sea

2013

Abstract Understanding the role played by offshore platforms in marine ecosystems is acquiring increasing importance worldwide. In this work, underwater visual census techniques were applied to describe spatial and temporal patterns of fish assemblages associated with extractive platforms. Data were collected during three seasons according to the following spatial factors: Location (Adriatic and Ionian Seas), Depth (0–6 m and 12–18 m) and Distance from the platform (external and internal). Both univariate and multivariate analyses showed highly significant differences for each factor assessed in this study, as well as for the interaction among said factors. Results indicated that artificial…

AllBack2Pave: Towards a sustainable recycling of asphalt in wearing courses

2017

Nowadays, asphalt plant technologies allow producing asphalt mixtures incorporating up to 100% reclaimed asphalt. Unfortunately policies are still behind technology and in order to suggest guidelines for a widespread use for surface courses, road managers feel the need of having a deeper understanding of optimised design strategies, information related to the handling in asphalt plants and on the performance of these mixes. This paper provides the summary of the main results and the details of the main idea behind “AllBack2Pave 2013–2015” a two-years, 500 K€ project funded by the CEDR Transnational Road Research project that evaluated the feasibility of going towards 100% recycling of aspha…

Indagine di laboratorio sulla permeabilità dei conglomerati bituminosi aperti

2010

I conglomerati bituminosi aperti utilizzati nelle pavimentazioni drenanti-fonoassorbenti devono garantire in opera precise e specifiche prestazioni in termini di conducibilità idraulica e rifrazione acustica, la cui quantificazione è demandata a indagini da effettuare “a posteriori” sulla sovrastruttura già realizzata. Questa prassi, registrata e regolata dai principali e più significativi Capitolati speciali per opere stradali, mostra un notevole limite qualora si voglia stabilire “a priori” il livello di prestazione del conglomerato, misurando il valore della grandezza in esame - per esempio la permeabilità - già in ambito di laboratorio e progettando di conseguenza la miscela, intervenen…

Rolling resistance and traffic delay impact on a road pavement life cycle carbon footprint analysis

2017

The application of Life Cycle Assessment (LCA) to road pavements has been continuously evolving and improving over the last years, however there are several limitations and uncertainties in the introduction of some components in the framework, such as road pavement rolling resistance—in terms of pavement surface properties—and traffic delay during maintenance activities. This paper analyses the influence of methodological assumptions and the model used to estimate the increased emissions for traffic delay and road pavement rolling resistance on the results of an LCA. The Greenhouse Gases (GHG) emissions related to these two phases of a pavement LCA will be calculated for a UK case study, us…

Interpreting Life Cycle Assessment results of bio-asphalt pavements for more informed decision-making

2020

Due to emerging climate challenges, engineers are looking to replace the conventional asphalt pavements by utilizing bio-materials combined with Reclaimed Asphalt (RA). However, there is insufficient record in the literature assessing their environmental performance. This study addresses the analysis of the results obtained from a life cycle assessment exercise of asphalt pavements containing bio-materials and RA within their binder courses, developed within the BioRePavation project. The aim is to analyze the environmental benefits achieved, by means of hotspot mapping and sensitivity analysis of the most impactful factors of their lifecycles. Two alternatives are compared to a conventiona…

Evaluation of porous asphalt hydrological performances through rainfall-runoff modelling by EPA SWMM

2023

Over the last few decades, the increase in extreme weather events has caused urban floods to become more and more frequent, with increased risks for road users. Among the different types of pavement structures, permeable pavements (PPs) can effectively increase the hydraulic resilience of the cities since they are specifically designed for reducing runoff by allowing water to infiltrate and be discharged into the soil and/or by drains. This study aims at evaluating the hydrological performance of a Porous Asphalt (PA) using numerical simulations for a case study carried out using EPA SWMM (Storm Water Management Model) software. Several simulations have been carried out, considering differe…

AN INTEGRATED MODEL TO EVALUATE TECHNICAL ENVIRONMENTAL AND ECONOMIC SUSTAINABILITY OF ROAD PAVEMENT

The unconditional exploitation of environmental resources, the emission of xenobiotic substances in nature and resulting pollution from the development of human activities have led, over time, to serious repercussions on the environment. Therefore these effects weigh on economic and social development. The need to deal with environmental issues and their relationship with economic development has led to the definition of sustainable development concept . The concept of sustainability combines three fundamental aspects which can not be separated, namely environmental, economic and social. The increasing sensitivity towards these socio-economic issues has driven research towards new fronts, u…

Una scatola di luce, un gioco di sguardi

2015

Il padiglione progettato dall’architetto siciliano con la collaborazione dell’artista Erich Demetz è un vero manifesto dei principi fondativi del suo fare architettura. Attraverso la luce, il cubo diventa luogo di sosta e meditazione da una parte; e di contemplazione del paesaggio dall’altra The pavilion designed by the Sicilian architect with the collaboration of the artist Erich Demetz is an actual manifesto of the fundamental principles he uses in his architecture. By means of light, the cube becomes a place for rest and meditation on one hand, and for contemplation of the landscape on the other

Il PAV di Torino, un parco in movimento

2013

Nella “liquidità” contemporanea, la possibilità di una cura dell’afasia diffusa impone un ripensamento che coincide con la parola ri-uso, nella sua accezione di recupero di senso, traduzione, riconversione. In una parola trasformazione. In una poetica del riuso, nella sua accezione di ritorno alla vita e trasformazione, s’inserisce il PAV - Parco Arte Vivente di Torino, con la sua architettura semi-ipogea. Attraverso l'esperienza del PAV, centro sperimentale di arte contemporanea, si analizza il ruolo del museo nei processi di trasformazione urbana. In contemporary "liquidity," the possibility of a cure for widespread aphasia imposes a rethinking that coincides with the word re-use, in its …

A grid of material and immaterial laboratories for supporting the sustainability of transportation: the RESET project in Sicily

2015

Transportation is a crucial sector, to be suitably approached in order of getting human activities in more environmentally sustainable paths. In fact, in developing, as well in less developing, countries people and freights mobility are responsible of important amount of pollutant emissions and are cause of significant levels of energy consumptions. In this paper, a Sicilian regional project is presented, aiming at establishing an interconnected grid of material and immaterial laboratories. These laboratories, that are devoted at inducing more virtuous behaviors in the transportation policies, are constituted by equipment and software tools, mainly located in the region’s universities, acti…