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
      • Ongoing Research Projects
      • Research Projects 2018-2022
      • Past Projects
    • 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
      • RepositoriUM
    • 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

    Comparative sustainability assessment of binary blended concretes using Supplementary Cementitious Materials (SCMs) and Ordinary Portland Cement (OPC)

    TitleComparative sustainability assessment of binary blended concretes using Supplementary Cementitious Materials (SCMs) and Ordinary Portland Cement (OPC)
    Publication TypePapers in International Journals
    Year of Publication2019
    AuthorsRahla K. M., Mateus, R., and Bragança, L.
    Abstract

    The process of manufacturing the Ordinary Portland Cement (OPC) is linked with potentially adverse consequences on the environment, as it consumes considerable quantities of resources and releases huge amounts of CO2 to the atmosphere. It is becoming more common to replace some proportion of OPC with by-products from other industries that once were considered as waste and sent to the landfills. Known as Supplementary Cementitious Materials (SCMs), these by-products are already being used as cement replacement materials at a growing pace in the construction sector. This results in reducing the potential environmental loads and, in some cases, improving the mechanical and durability properties of concretes. The aim of this research was to investigate the environmental, economic and functional performances of binary blended concretes containing Fly Ash (FA), Ground Granulated Blast-Furnace slag (GGBFS) and Silica Fume (SF) at different OPC substitution percentages. Using the MARS-SC method, the concretes were compared and ranked by their sustainability performances, based on a list of fifteen sustainability indicators. The results showed that concrete containing 40% of GGBFS was ranked as the most sustainable among the studied mixtures, as it presented the most suitable trade-offs to achieve the highest sustainability performance. Concrete with 15% of SF was ranked as the less sustainable, with a sustainability level lower than the conventional concrete. From a sustainability perspective, the optimum replacement ratio was found to be: 40% for GGBFS, 5% for SF, and 20% for FA, which means that exceeding that substitution ratio will probably lead to a binary blended concrete with a lower sustainability level.

    JournalJournal of Cleaner Production
    Volume220
    Pagination445-459
    Date Published2019-02-15
    PublisherELSEVIER
    ISSN0959-6526
    DOIhttps://doi.org/10.1016/j.jclepro.2019.02.010
    KeywordsBinary blended concretes, Fly ash (FA), Ground granulated blast-furnace slag (GGBFS), Silica fume (SF), Supplementary cementitious materials, Sustainability assessment
    RightsrestrictedAccess
    Peer reviewedyes
    Statuspublished
    • Google Scholar
    • BibTex
    • RTF
    • XML

    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 25 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