Search results for "ARCHITETTURA TECNICA"
showing 10 items of 478 documents
Timbrel vaults in Sicily. Constructive techniques and intervention methodologies
2017
Tra le tante tipologie di volte riscontrate sul territorio siciliano finalizzate a coniugare economia e leggerezza senza perdere in sicurezza, vengono in questo studio analizzate quelle costituite da due, tre o quattro fogli di mattoni sottili uniti con gesso (volte realine secondo la definizione locale). Non si hanno notizie certe sull’origine di queste volte che, probabilmente introdotte dall’area iberica in Sicilia nella prima metà del XVIII secolo, evidenziano come un sistema costruttivo importato da aree geografiche spesso molto distanti possa essere reinterpretato in funzione dei materiali disponibili e della cultura edilizia locale. Ciò ha in più occasioni determinato soluzioni origi…
Il destino delle cupole, tra crolli, demolizioni, consolidamenti e ricostruzioni_The destiny of domes, through collapses, demolitions, reinforcements…
2017
Le cupole sono sempre state opere di grande impegno costruttivo e di sperimentazione statica. L’ardita realizzazione o il semplice mancato crollo delle stesse rendeva celebre il progettista e la fabbrica in cui la cupola veniva inserita (spesso anche in un secondo momento, rispetto al primigenio nucleo), allo stesso modo i frequenti collassi ed i dissesti ne segnavano gli insuccessi e le qualità, sia nelle ricostruzioni che nei consolidamenti. Se il sisma costituiva il pericolo maggiore, non minore era il rischio correlato alla costruzione malfatta, prassi costante in aree marginali, che veniva spesso mascherata da finiture di alta qualità. I frequenti disastri fin dall’epoca post-rinascime…
PASSIVE SYSTEMS FOR BUILDINGS INDOOR COMFORT
2016
The paper shows the preliminary studies for the University Campus ZEB Energy realization in Palermo. The particular location in the Mediterranean basin has required careful planning to resolve the problems related to high temperatures and humidity. For this reason has been employed strategies, elements and building materials that meet the requirements of sustainability and energy savings provided by law, in order to build a new building energy self-sufficient. The University of Palermo had the need to create new spaces to be used as classrooms for different types of education and especially of a space for conferences and conventions. This type of spaces is usually very energy eater because …
I borghi interni in Sicilia: recupero dell’identità e strategie di valorizzazione
2021
La promozione di studi e ricerche volti al recupero e alla valorizzazione delle aree interne marginali e dei centri minori, indirizzati a supportare Regioni, Comuni e cittadinanza locale, estremamente utili all’individuazione di soluzioni più opportune per lo sviluppo sostenibile e la valorizzazione di luoghi e architetture, ha suggerito la ricerca che in questo saggio si vuole illustrare, rivolta a investigare – in prima battuta e in termini generali – i caratteri identitari dell’area montana interna siciliana delle “Madonie” e nel dettaglio, invece, il borgo “Pusterna” del comune di Petralia Sottana. Si verificheranno, per quest’ultimo, i livelli di comfort indoor raggiungibili nell’ambit…
The effects of solar radiation in archaeological sites
2013
Ruined walls, paving and decorative elements of archaeological sites are mainly composed of materials with chemical, physical and biological degradation problems that are primarily due to environmental factors. The conservation of archaeological finds requires a protection against these factors. Solar radiation may constitute one of those causes of deterioration. In recent decades the use of glass to cover archaeological sites has been more and more widespread (Fig. 1). The purpose of those glass covers is to reconcile the need of the display capabilities with the preservation of the remains. In general, a protective cover structure determines new conditions that must be carefully controlle…
Novel biomass fly ash-based geopolymeric mortars using lime slaker grits as aggregate for applications in construction: Influence of granulometry and…
2019
Abstract This work discusses the influence of the aggregate granulometry and the binder/aggregate ratio on the engineering properties of novel green geopolymeric mortars. Two wastes generated by a Portuguese Kraft pulp industry are employed to manufacture the material: lime slaker grits (used as aggregate) and biomass fly ash (to partially replace the metakaolin − 70 wt% substitution). The novel geopolymeric mortars could find innovative applications as sustainable construction materials. The studied mix design foresees the use of several grits granulometric ranges and ratios binder/aggregate to discuss workability, water sorptivity, and mechanical performance of the novel mortars. To date,…
Prove per la caratterizzazione fisica di malte di calce idraulica naturale e semi-idrauliche
2009
The essay analizes some mechanical and physical properties of natural hydraulic lime and semi-hydraulic mortars. Those are both made according to traditional formulas and pre-mixed in factory. Particularly, this study provides results of flexural and compression tests, as well as water absorption tests due to capillary action. Tests are carried out in accordance with european standard, even in relation with specificities of examined materials.
A sustainable replacement for TiO2 in photocatalyst construction materials: Hydroxyapatite-based photocatalytic additives, made from the valorisation…
2018
The use of waste materials and by-products in building materials is of increasing importance to improve sustainability in construction, as is the incorporation of photocatalytic materials to both combat atmospheric pollution and protect the structures and façades. This work reports the innovative use of photocatalytic hydroxyapatite (HAp) based powders, derived from Atlantic codfish bone wastes, as an additive to natural hydraulic lime mortars. HAp is the main component of bone, and hence is non-toxic and biocompatible. This is the first time that such a calcium phosphate-based photocatalyst, or indeed any fish/marine derived wastes, have been added to building materials. A key factor is th…
Torre tecnologica e percorsi dell’acqua: un possibile sistema di fruizione
2020
L'articolo presenta i risultati di un esercizio laboratoriale condotto con gli studenti del Corso di Laurea magistrale LM4 in Ingegneria edile - Architettura. L’idea parte dalla reinterpretazione delle torri piezometriche, utilizzate per mettere in pressione l’acqua proveniente dai canali sotterranei che irrorano la Conca d'Oro di Palermo e la Fossa della Garofala. L’originaria torre tronco piramidale a base quadrata è stata opportunamente modificata nella forma e nella funzione, svuotata all’interno in modo da consentirvi l'accesso. Chi entra potrà sostare, godere dell’ombreggiamento e della frescura prodotta da un sistema di raffrescamento evaporativo collocato nella parte sommitale della…
Sustainable Renovation Framework: Introducing three levels of Integrated Design Process Implementation and Evaluation
2017
Future sustainable building renovation is a balance between the economic and environmental impacts related to the desired social activities facilitated by the renovated building. A review of recent research has revealed that the present efforts on sustainable objectives fulfilment in renovation projects are not sufficient. This paper investigates processes and frameworks in building renovation. It aims to deal with simplification of the existing complexity due to involvement of various types of stakeholders, sustainability criteria and potential renovation technologies in design process. Moreover, it facilitates understanding of the design process implementation through identification of th…