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  <doc>
    <id>57157</id>
    <completedYear/>
    <publishedYear>2023</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>667</pageFirst>
    <pageLast>676</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>40</volume>
    <type>conferenceobject</type>
    <publisherName>Springer</publisherName>
    <publisherPlace>Cham</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">RILEM TC 281-CCC Working Group 6: Carbonation of alkali activated concrete—preliminary results of a literature survey and data analysis</title>
    <abstract language="eng">The current understanding of the carbonation of alkali-activated concretes is ham-pered inter alia by the wide range of binder chemistries used. To overcome some of the limitations of individual studies and to identify general correlations between their mix design parameters and carbonation resistance, the RILEM TC 281-CCC working group 6 compiled carbonation data for alkali-activated concretes and mortars from the literature. For comparison purposes, data for blended Portland cement-based concretes with a high percentage of SCMs (≥ 66 % of the binder) were also included in the database. A preliminary analysis of the database indicates that w/CaO ratio and w/b ratio exert an influence on the carbonation resistance of alkali-activated concretes but, contrary to what has been reported for concretes based on (blended) Portland cements, these are not good indicators of their carbonation resistance when considered individually. A better indicator of the carbonation resistance of alkali-activated concretes under conditions approxi-mating natural carbonation appears to be their w/(CaO + Na2O + K2O) ratio. Furthermore, the analysis points to significant shortcomings of tests at elevated CO2 concentrations for low-Ca alkali-activated concretes, indicating that even at a concentration of 1 % CO2, the outcomes may lead to inaccurate predictions of the carbonation coefficient under natural exposure conditions.</abstract>
    <parentTitle language="eng">Proceedings of the 75th RILEM Annual Week 2021: Advances in Sustainable Construction Materials and Structures</parentTitle>
    <identifier type="issn">2211-0852</identifier>
    <identifier type="issn">2211-0844</identifier>
    <identifier type="isbn">978-3-031-21734-0</identifier>
    <identifier type="isbn">978-3-031-21735-7</identifier>
    <identifier type="doi">10.1007/978-3-031-21735-7_72</identifier>
    <enrichment key="eventName">75th RILEM Annual Week</enrichment>
    <enrichment key="eventPlace">Mérida, Yucatán, Mexico</enrichment>
    <enrichment key="eventStart">30.08.2021</enrichment>
    <enrichment key="eventEnd">03.09.2021</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="date_peer_review">17.07.2023</enrichment>
    <author>Gregor Gluth</author>
    <author>X. Ke</author>
    <author>A. Vollpracht</author>
    <author>S. A. Bernal</author>
    <author>Ö. Cizer</author>
    <author>M. Cyr</author>
    <author>K. Dombrowski-Daube</author>
    <author>D. Geddes</author>
    <author>C. Grengg</author>
    <author>C. Le Galliard</author>
    <author>M. Nedeljkovic</author>
    <author>J. L. Provis</author>
    <author>Z. Shi</author>
    <author>L. Valentini</author>
    <author>B. Walkley</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Alkali-activated materials</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Durability</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Carbonation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Testing</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Concrete</value>
    </subject>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="institutes" number="">7 Bauwerkssicherheit</collection>
    <collection role="institutes" number="">7.4 Baustofftechnologie</collection>
    <collection role="themenfelder" number="">Infrastruktur</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>60936</id>
    <completedYear/>
    <publishedYear>2024</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>31</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>57</volume>
    <type>article</type>
    <publisherName>Springer Nature</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Report of RILEM TC 281-CCC: A critical review of the standardised testing methods to determine carbonation resistance of concrete</title>
    <abstract language="eng">The chemical reaction between CO2 and a blended Portland cement concrete, referred to as carbonation, can lead to reduced performance, particularly when concrete is exposed to elevated levels of CO2 (i.e., accelerated carbonation conditions). When slight changes in concrete mix designs or testing conditions are adopted, conflicting carbonation results are often reported. The RILEM TC 281-CCC ‘Carbonation of Concrete with Supplementary Cementitious Materials’ has conducted a critical analysis of the standardised testing methodologies that are currently applied to determine carbonation resistance of concrete in different regions. There are at least 17 different standards or recommendations being actively used for this purpose, with significant differences in sample curing, pre-conditioning, carbonation exposure conditions, and methods used for determination of carbonation depth after exposure. These differences strongly influence the carbonation depths recorded and the carbonation coefficient values calculated. Considering the importance of accurately determining carbonation potential of concrete, not just for predicting their durability performance, but also for determining the amount of CO2 that concrete can re-absorb during or after its service life, it is imperative to recognise the applicability and limitations of the results obtained from different tests. This will enable researchers and practitioners to adopt the most appropriate testing methodologies to evaluate carbonation resistance, depending on the purpose of the conclusions derived from such testing (e. g. materials selection, service life prediction, CO2 capture potential).</abstract>
    <parentTitle language="eng">Materials and Structures</parentTitle>
    <identifier type="doi">10.1617/s11527-024-02424-9</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-609364</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="date_peer_review">16.09.2024</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>S. A. Bernal</author>
    <author>Y. Dhandapani</author>
    <author>Y. Elakneswaran</author>
    <author>Gregor Gluth</author>
    <author>E. Gruyaert</author>
    <author>M. C. G. Juenger</author>
    <author>B. Lothenbach</author>
    <author>K. A. Olonade</author>
    <author>M. Sakoparnig</author>
    <author>Z. Shi</author>
    <author>C. Thiel</author>
    <author>P. Van den Heede</author>
    <author>H. Vanoutrive</author>
    <author>S. von Greve-Dierfeld</author>
    <author>N. De Belie</author>
    <author>J. L. Provis</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Concrete</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Cement</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Carbonation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Testing</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Standards</value>
    </subject>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="institutes" number="">7 Bauwerkssicherheit</collection>
    <collection role="institutes" number="">7.4 Baustofftechnologie</collection>
    <collection role="themenfelder" number="">Infrastruktur</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <collection role="themenfelder" number="">Green Intelligent Building</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/60936/Bernal et al - Mater Struct 2024.pdf</file>
  </doc>
</export-example>
