Search results for "Plaster"

Experimental evaluation of plasters durability aimed at maintenance planning and scheduling

2011

The phase of building management has a strategic importance because of the necessary scheduling of maintenance during executive planning. Moreover, in order to obtain the greatest sustainability of the intervention, a reasonable duration of service life must be balanced with global quality-cost ratio. A contribution towards this objective is given by the reduction in the achievable resources and raw materials consumption through the improvement of the durability requirement of building and its parts. This is true even for the interventions on the existing public building stock, especially if there is lacking of maintenance planning and scheduling. This work, taking cues from a maintenance i…

Life Cycle Assessment and eco-design of building materials: the case study of a Sicilian cement plaster

2015

Buildings in the European Union (EU) account for the largest share of the total EU final energy consumption (42%), and greenhouse gas emissions (35%). Therefore, the reduction of energy use, the development of quality-oriented processes and the improvement of energy performance in the building sector are important measures needed to reduce greenhouse gas emissions and the energy dependency of the European Union from foreign countries. In this context, it is necessary to develop sustainable building products, with low energy and environmental impacts during their life cycle, from the extraction of raw material to the manufacturing, use and end-of-life. The main goal of the study is to define…

Introduzione

2020

Introduction to the volume "Una memoria fragile? Collezioni di calchi in gesso e il loro ruolo di eredità storica tra passato e presente / Fragile Erinnerung? Sammlungen von Gipsabgüsse als historisches Erbe in Vergangenheit und Gegenwart" (Leipzig 2020)

Il vandalismo sui gessi

2020

The article reads the vandalism against plaster casts in the context of a general misfortune of this educational medium. The author explores the question of the extent to which the movement Arte Povera has paved the way for the recovery of historical plaster cast collections.

Eracle e la cerva di Cerinea del Museo Archeologico “A. Salinas” di Palermo. Dall’originale ai calchi moderni per la didattica e l’arredo privato

2021

Il testo, partendo da un inedito calco in gesso patinato della prima metà del ‘900 rinvenuto sul mercato antiquario, analizza il gruppo bronzeo con Eracle e la cerva di Cerinea del Museo Archeologico “A. Salinas” di Palermo da cui è tratto (fine I sec. a.C. – I sec. d.C.), descrivendone il tipo iconografico e individuandone l’archetipo lisippeo, attraverso il raffronto con esempi di età imperiale, tardo-antica e medievale. L’opera, ritrovata a Pompei nel 1805, fu donata al Museo dell’Università di Palermo nel 1831 per la munificenza dei Borbón/Farnese, di cui si approfondiscono almeno due episodi di illuminata committenza artistica per la città durante il soggiorno di Ferdinando I re delle …

Validity and reliability of measurements of the parameters of smile aesthetics: a comparison between digital and plaster models

2020

This study aims to evaluate the validity and reliability of the TRIOS3 Color intraoral scanner (3Shape A/S, Copenhagen, Denmark) and its associated Ortho Analyzer™ software in measuring parameters of smile aesthetics compared with measurements on plaster casts. The study sample comprised plaster casts and digital models obtained from 30 subjects. Height (H), mesiodistal diameter (MDD) and connecting space (CS) of the anterior teeth were measured with a digital calliper on the plaster models and with the orthodontic software on the digital models. Validity was assessed using a 2-tailed paired t-test; the reliability of measurements for intra-examiner was evaluated with the Intra-class Correl…

Orthodontic study model : digital vs plaster model

2020

The T.r.u.e. Methodology and Software. Application and Method: Mural paintings in the Church of S. Maria della Catena in Palermo

2008

Poster presented at the International Conference and Workshop "Teaching Conservation/Restoration of Architectural Heritage, Goals, Contents and Methods", EAAE-ENHSA, Genova, 18-20 ottobre 2007.

L'intonaco Li Vigni nell'architettura del XX secolo a Palermo. Nuove conoscenze e applicazioni diagnostiche per la manutenzione

2013

Il saggio presenta lo studio degli intonaci formulati per imitare le pietre e i marmi naturali che si diffondono in Sicilia all’inizio del XX secolo ed evidenzia che le prime applicazioni e la diffusione delle nuove malte, anche nel resto dell’Italia, risentono delle sperimentazioni condotte in tutta l’Europa. Il contributo riassume i risultati di una rigorosa e capillare ricognizione tra i brevetti conservati presso l’Archivio Centrale dello Stato a Roma inerenti alle malte per il confezionamento dell’intonaco a “finta pietra”, ne analizza i contenuti in modo critico e pone in risalto i contatti culturali con le sperimentazioni dei materiali in atto nell’ambito dei grandi cantieri di resta…

Architectural technologies for life environment: Spent coffee ground reuse in lime-based mortars. A preliminary assessment for innovative green therm…

2022

Spent coffee ground, the residue obtained from the brewing process, is the primary unavoidable (inedible) waste from the coffee consumption. As coffee production and beverage consumption are increasing worldwide, a more sustainable waste management is required since the usual disposal in landfill is a liability to both humans and the environment. This paper is aimed at showing a possible alternative reuse of coffee ground wastes in novel green building materials intended for thermo-plastering applications in construction, in a circular economy context. Coffee waste was used in various percentages (up to 17.5%) to assess the engineering performance of the produced bio-composite mortars. The …