Search results for "building"
showing 10 items of 1985 documents
Convolution-based ensemble learning algorithms to estimate the bond strength of the corroded reinforced concrete
2022
Reinforced concrete bond strength deterioration is one of the most serious problems in the construction industry. It is one of the most common factors impacting structural deterioration and the major cause of premature decadence of reinforced concrete structures. Therefore, developing an accurate model with the lowest variance and high reliability for the bond strength of corroded reinforced concrete is very important. The current work evaluates the efficiency of convolution-based ensemble learning algorithms. To address these issues, convolution-based ensemble learning models are developed using a database collected from the previous experimental studies of relative bond strength for corro…
Use of fiber-section beam elements for modelling the monotonic flexural response of RC jacketed columns
2021
Abstract The use of reinforced concrete (RC) jacketing is a common technique for retrofitting existing RC columns with poor structural performances. Literature studies highlighted that the relative slip occurring at the interface between the new and the old concrete can affect substantially the flexibility and the strength of the retrofitted member. For this reason, several interface treatments are usually applied, aiming to induce a monolithic behaviour to the column. However, despite the commonness of RC jacketing, a limited number of studies investigated numerical modelling strategies for including these phenomena, especially with reference to the development of numerical models for desi…
The need for internships and school practices as a method of bridging the gap between education and industry in Romania
2017
Abstract This paper presents the current situation of school practice and internships as ways of reducing the gap between the labor market and education. In the first part, there is highlighted the current situation of Romania comparing with other European countries when it comes about graduates finding a job in their field of studies. Among the biggest issues encountered by a young graduate we see that "Lack of experience” play a big role in not finding a proper job in our country after graduation. So the need to reduce this problem is vital in order to ease finding a job in the studies areas for graduates. A list of advantages is presented to encourage internships/school practice among th…
Lit environments quality: A software for the analysis of luminance maps obtained with the HDR imaging technique
2013
Abstract Energy performance of lighting systems has assumed a significant role in the assessment of buildings’ consumptions and consequently lighting design is aimed to reduce installed power but at the same time to achieve an excellent lighting quality both for visual and health purposes. Lighting design is nowadays essentially based on illuminance values on visual tasks and surrounding areas, but today designers’ and researchers’ interest is focused on the analysis of luminance maps obtained through video luminance meters or with numeric simulation tools. Luminance maps availability focus the attention on a more accurate study of the light reaching the eyes (luminance), rather than on the…
Effect of operating conditions and feedstock composition on the properties of manganese oxide or quartz charcoal pellets for the use in ferroalloy in…
2020
peer-reviewed The full text of this article will not be available until the embargo expires on the 26/12/2021 This study investigates the effect of heat treatment temperature on the properties of charcoal composite pellets used for the reduction of ferroalloys. The heavy fraction of biooil was used as a binder for the charcoal ore pellet preparation. The effect of heat treatment temperature on the pellet shrinkage was related to the degree of reduction which varied with feedstock and ore composition. The results showed that the size and shape of the charcoal pellets were not affected by the biooil devolatilization. Manganese charcoal pellets showed higher electrical resistance during pyroly…
ARCHITECTURE AND PHOTOVOLTAICS. Strategies, technologies and novel components for the building envelope
Il principale obiettivo della tesi ha riguardato lo studio di strategie e tecnologie per l’integrazione del fotovoltaico negli edifici, con particolare attenzione verso le tecnologie solari di terza generazione, e la successiva definizione di un componente multifunzionale innovativo per l’involucro edilizio integrato con Dye-sensitized Solar Cells (DSC). Nella prima parte del lavoro, la ricerca si è concentrata sull’analisi del mercato del Building Integrated Photovoltaics (BIPV), sottolineando differenze, limiti e potenzialità di ciascuna tecnologia fotovoltaica. Particolare attenzione, inoltre, è stata rivolta a un numero consistente di casi studio, ossia edifici di nuova costruzione o in…
Safety as design requirement in the intervention on architectural and building heritage
2012
Nel progetto e nell’ intervento di recupero e manutenzione è fondamentale tener conto dei requisiti di sicurezza dell’edificio, dei beni in esso contenuti e dei fruitori al fine di operare, in ambito tecnologico, scelte idonee al controllo prestazionale del sistema edilizio. Questo ambito tematico è stato proposto negli ultimi anni quale linea di ricerca in un contesto attento all’evoluzione metodologica dell’intervento sull’esistente costruito. La sicurezza già identificata nelle classe esigenziale/classe di requisiti per il progetto del nuovo necessita, però, nell’intervento sull’esistente del confronto con le caratteristiche di vulnerabilità del patrimonio costruito. Essa presuppone, com…
Aspetti tecnologici per il riuso: contributi al dibattito
2016
Qui il taglio della trattazione sul riuso della Centrale Enel Tifeo è legato alle questioni tecnologiche sia pure in un’accezione ampia che declina sia le tecniche ambientali che le tecnologie connesse agli edifici e alle costruzioni. Una lettura disciplinare, certamente parziale e limitata, che non vuole mancare però di individuare fattori comuni e temi di dibattito di più ampio respiro. Si tenta questa analisi con una struttura di tre paragrafi, parzialmente correlati a scale di problemi: il contesto e il lotto, quale area di dominio; l’involucro, soprattutto considerato per l’edificio dei turbo-alternatori; l’ambiente indoor e gli spazi interni in edifici dalla spazialità estremamente pa…
The Role of Local Administrations in the Energy Retrofit of Public Buildings: a Case Study
2022
Recent regulations, and related incentives, concerning urban sustainability issued at European and national level place particular attention on improving the energy and environmental performance of buildings. In this sense, a particular focus has been placed on public buildings (offices, schools, hospitals, etc..), being these centers of gravitation of social life. Among the EU strategies on this matter is an initiative called Sustainable Energy and Climate Action Plan (SECAP), through which local administrators, based on the knowledge of their territory, are called to establish appropriate energy strategies and commit to achieving their targets within the timeframe set by the EU. The prese…
The European Standards for Energy Efficiency in Buildings: an analysis of the Evolution with Reference to a Case Study
2019
The improvement of the energy efficiency of building stocks represents an important contribution for the reduction of the energy consumption in the European Union (EU), along with the decrease of greenhouse gases emissions. In this aim both the public administrations and the technical experts need reliable calculation methodology to assess buildings’ energy performance. In this framework, despite the recent publication of the Standard EN ISO 52016, that deeply modifies the approach to the energy building simulation by introducing a new hourly dynamic calculation model, the current normative framework (EN ISO 13790) will maintain its validity until the incorporation of the new Standard in th…