Home
Home
    • Home
    • About us
      • About CTAC
      • Organization
      • Regulation
    • People
      • Members
      • Positions available
    • Research
      • Vision
      • Research Areas
        • Construction Materials and Technologies
        • Hydraulics and Environment
        • Territory
      • Research projects
      • Research Projects 2013-2018
    • Facilities
      • Construction Materials and Technologies
      • Hydraulics and Environment
      • Territory
    • Publications
      • All
      • Books
      • Book Chapters
      • Papers in Scientific Journals
      • Conference Comunications
      • PhD Thesis
      • Masters Thesis
      • Journal
    • Education
      • Doctoral Programme Infrarisk
      • Doctoral Programme in Civil Engineering
      • Doctoral Programme in Eco Construction and Rehabilitation
      • Doctoral Programme of Solid Waste Management and Treatment
      • International Doctorate in Sustainable Built Environment
        • International Doctorate in Sustainable Built Environment
      • Master's Degree in Civil Engineering
      • Master's Degree in Sustainable Built Environment
      • Master's Degree in Urban Engineering
      • Master´s Degree in Sustainable Construction and Rehabilitation
    • Partners
    • Events
    • News
    • SITAC
    Filter

    Publications

    Papers in International JournalsChapters/ Papers in International BooksChapters/ Papers in National BooksCommunications in International ConferencesCommunications in National ConferencesMSc ThesesBooksProceedingsPatentsTechnical/ Scientific ReportsPhD Theses
    @conference {2441,
    	title = {Study of double windows efficiency in order to improve sound insulation in buildings},
    	journal = {SBE Series 16 - Brazil \& Portugal},
    	volume = {1},
    	year = {2016},
    	month = {2016-09-07 00:00:00},
    	pages = {343},
    	address = {Vit{\'o}ria, Brazil},
    	abstract = {

    The aim of this research is to evaluate sound insulation behavior of double windows, when windows, when a second window is placed upon a previous one, keeping an air layer between them. This was done through standard tests carried out at the insulation chamber of the Acoustics Laboratory of Federal University of Santa Maria in accordance with international norms ISO 10140-2 and ISO 717-1. First, low air hermetic windows were duplicated, each one having Rw = 18 dB. Second, good air hermetic windows were duplicated. The objective, through this technique, was to find out sound insulation improvement of double windows under the two mentioned circumstances. It was verified that low air hermetic double window obtained Rw = 26 dB, with an increase of 8 dB in relation to just one window of the same typology. In relation to good air hermetic double window, a Rw final of 37 dB was obtained, considering that the increase in sound insulation depends on the initial performance of the first installed window. The gain in insulation in the second instance was between 4 to 8 dB, mainly in relation to low and medium frequencies. Therefore, it was possible to quantify which sound insulation improvement could be done on fa{\c c}ades employing the technique of double windows in order to contribute to the improvement and quality of buildings in Brazil.

    }, keywords = {Acoustics, Double windows, Sound insulation}, url = {http://sbe16.civil.uminho.pt/app/?s=Study+of+double+windows+efficiency+in+order+to+improve+sound+insulation+in+buildings\&submit=Search}, author = {Oliveira, M. and Bragan{\c c}a, L. and Paix{\~a}o, D. and Santos, J. P.} }

    About CTAC

    The Centre for Territory, Environment and Construction (CTAC) is a research unit of the School of Engineering of University of Minho (UMinho), recognised by the “FCT – Fundação para a Ciência e Tecnologia” (Foundation for Science and Technology), associated to the Department of Civil Engineering (DEC), with whom it shares resources and namely human resources.

    Currently CTAC aggregates 24 researchers holding a PhD of which 20 are faculty professors of the Civil Engineering Department. Read more


    Watch the CTAC Institutional Video

    Journal

    Research Areas of Competence

    Construction Materials and Technologies
    Hydraulics and Environment
    Territory

    News

    Contact us

    Centro de Território, Ambiente e Construção
    Escola de Engenharia da Universidade do Minho
    Campus de Azurém
    4800-058 Guimarães, Portugal

    Phone: + 351 253 510 200 (517 206)
    Fax: + 351 253 510 217

    Email: geral@ctac.uminho.pt


    Copyright 2014 CTAC Research Group in Territory, Environment and Construction
    Website Credits