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  <doc>
    <id>58736</id>
    <completedYear/>
    <publishedYear>2023</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>360</pageFirst>
    <pageLast>363</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>III</volume>
    <type>conferenceobject</type>
    <publisherName>Thailand Concrete Association</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Carbonation of concrete with SCMs: a data analysis by RILEM TC 281-CCC</title>
    <abstract language="eng">The RILEM TC 281–CCC "Carbonation of concrete with supplementary cementitious materials" is studying the effect of supplementary cementitious materials (SCMs) on natural and accelerated carbonation of blended cements. In this context a large database with carbonation depths over time has been set-up with currently 910 concrete and mortar mixes, which have been tested at different curing conditions. The collected data includes information on chemical composition and physical properties of the raw materials, on mix-design, compressive strength, curing and carbonation testing conditions. Data for a large variety of binders (with up to 94 % SCMs) and mix designs (with w/b ratios ranging from 0.26 to 0.75) were collected from the literature and unpublished material testing projects. Natural carbonation was recorded for several years in many cases, and indoor as well as outdoor results are included. However, in this contribution only lab conditions are considered. Carbonation kinetics are investigated considering the binder composition and mix design. Furthermore, the accuracy of accelerated carbonation testing is evaluated. As described in literature, the w/CaOreactive-ratio is a decisive factor for carbonation resistance but curing and exposure conditions influence the results as well. Even with identical test conditions, the scatter is very large.</abstract>
    <parentTitle language="eng">16th International Congress on the Chemistry of Cement 2023 (ICCC2023)</parentTitle>
    <identifier type="url">https://www.iccc-online.org/fileadmin/gruppen/iccc/proceedings/ICCC16_2023_Vol_III.pdf</identifier>
    <enrichment key="eventName">16th International Congress on the Chemistry of Cement 2023 (ICCC2023)</enrichment>
    <enrichment key="eventPlace">Bangkok, Thailand</enrichment>
    <enrichment key="eventStart">18.09.2023</enrichment>
    <enrichment key="eventEnd">22.09.2023</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>A. Vollpracht</author>
    <author>C. Thiel</author>
    <author>Z. Zhao</author>
    <author>Y. A. Villagrán Zaccardi</author>
    <author>G. P. Cordoba</author>
    <author>Gregor Gluth</author>
    <author>H. Vanoutrive</author>
    <author>E. Gruyaert</author>
    <author>A. Kanellopoulos</author>
    <author>R. Mi</author>
    <author>N. De Belie</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Carbonation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Supplemetary cementitious materials</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Blended cement</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="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Graue Literatur</collection>
  </doc>
  <doc>
    <id>61438</id>
    <completedYear/>
    <publishedYear>2024</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>33</pageLast>
    <pageNumber/>
    <edition/>
    <issue>9</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: insights into factors affecting the carbonation rate of concrete with SCMs revealed from data mining and machine learning approaches</title>
    <abstract language="eng">The RILEM TC 281–CCC ‘‘Carbonation of concrete with supplementary cementitious materials’’ conducted a study on the effects of supplementary cementitious materials (SCMs) on the carbonation rate of blended cement concretes and mortars. In this context, a comprehensive database has been established, consisting of 1044 concrete and mortar mixes with their associated carbonation depth data over time. The dataset comprises mix designs with a large variety of binders with up to 94% SCMs, collected from the literature as well as unpublished testing reports. The data includes chemical composition and physical properties of the raw materials, mix-designs, compressive strengths, curing and carbonation testing conditions. Natural carbonation was recorded for several years in many cases with both indoor and outdoor results. The database has been analysed to investigate the effects of binder composition and mix design, curing and preconditioning, and relative humidity on the carbonation rate. Furthermore, the accuracy of accelerated carbonation testing as well as possible correlations between compressive strength and carbonation resistance were evaluated. One approach to summerise the physical and chemical resistance in one parameter is the ratio of water content to content of carbonatable CaO (w/CaOreactive ratio). The analysis revealed that the w/CaOreactive ratio is a decisive factor for carbonation resistance, while curing and exposure conditions also influence carbonation. Under natural exposure conditions, the carbonation data exhibit significant variations. Nevertheless, probabilistic inference suggests that both accelerated and natural carbonation processes follow a square-root-of-time behavior, though accelerated and natural carbonation cannot be converted into each other without corrections. Additionally, a machine learning technique was employed to assess the influence of parameters governing the carbonation progress in concretes.</abstract>
    <parentTitle language="eng">Materials and Structures</parentTitle>
    <identifier type="issn">1871-6873</identifier>
    <identifier type="issn">1359-5997</identifier>
    <identifier type="doi">10.1617/s11527-024-02465-0</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-614388</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="date_peer_review">04.11.2024</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>A. Vollpracht</author>
    <author>Gregor Gluth</author>
    <author>B. Rogiers</author>
    <author>I. D. Uwanuakwa</author>
    <author>Q. T. Phung</author>
    <author>Y. Villagran Zaccardi</author>
    <author>C. Thiel</author>
    <author>H. Vanoutrive</author>
    <author>J. M. Etcheverry</author>
    <author>E. Gruyaert</author>
    <author>S. Kamali-Bernard</author>
    <author>A. Kanellopoulos</author>
    <author>Z. Zhao</author>
    <author>I. M. Martins</author>
    <author>S. Rathnarajan</author>
    <author>N. De Belie</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Carbonation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Supplementary cementitious materials</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 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/61438/Vollpracht et al - Mater Struct 2024.pdf</file>
  </doc>
</export-example>
