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Influence of added water and fly ash content on the characteristics, properties and early-age cracking sensitivity of alkali-activated slag/fly ash concrete cured at ambient temperature.

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Title: Influence of added water and fly ash content on the characteristics, properties and early-age cracking sensitivity of alkali-activated slag/fly ash concrete cured at ambient temperature.
Authors: Rodrigue, Alexandre1 alexandre.rodrigue.3@ulaval.ca, Duchesne, Josée1 Josee.Duchesne@ggl.ulaval.ca, Fournier, Benoit1 benoit.fournier@ggl.ulaval.ca, Bissonnette, Benoit1 Benoit.Bissonnette@gci.ulaval.ca
Source: Construction & Building Materials. May2018, Vol. 171, p929-941. 13p.
Subjects: Portland cement, Compressive strength, Fly ash, Concrete construction, Cement
Abstract: For an appropriate air void system, good mechanical properties and low porosity/microcracking in alkali-activated binder systems, appropriate slag/fly ash proportioning, water and admixture contents are needed. Air entraining admixture dosages of up to 10 times the recommended dosage were necessary to obtain minimal air void properties similar to what is needed for normal portland cement concretes subjected to freezing conditions. Increasing added water resulted in increasing absorption and decreasing crack counts in concrete. Increasing fly ash contents resulted in increasing absorption and decreasing early-age crack counts. Increasing both added water and fly ash content resulted in less autogenous shrinkage. [ABSTRACT FROM AUTHOR]
Copyright of Construction & Building Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 129152955
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Influence of added water and fly ash content on the characteristics, properties and early-age cracking sensitivity of alkali-activated slag/fly ash concrete cured at ambient temperature.
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  Data: <searchLink fieldCode="AR" term="%22Rodrigue%2C+Alexandre%22">Rodrigue, Alexandre</searchLink><relatesTo>1</relatesTo><i> alexandre.rodrigue.3@ulaval.ca</i><br /><searchLink fieldCode="AR" term="%22Duchesne%2C+Josée%22">Duchesne, Josée</searchLink><relatesTo>1</relatesTo><i> Josee.Duchesne@ggl.ulaval.ca</i><br /><searchLink fieldCode="AR" term="%22Fournier%2C+Benoit%22">Fournier, Benoit</searchLink><relatesTo>1</relatesTo><i> benoit.fournier@ggl.ulaval.ca</i><br /><searchLink fieldCode="AR" term="%22Bissonnette%2C+Benoit%22">Bissonnette, Benoit</searchLink><relatesTo>1</relatesTo><i> Benoit.Bissonnette@gci.ulaval.ca</i>
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  Data: <searchLink fieldCode="JN" term="%22Construction+%26+Building+Materials%22">Construction & Building Materials</searchLink>. May2018, Vol. 171, p929-941. 13p.
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  Data: <searchLink fieldCode="DE" term="%22Portland+cement%22">Portland cement</searchLink><br /><searchLink fieldCode="DE" term="%22Compressive+strength%22">Compressive strength</searchLink><br /><searchLink fieldCode="DE" term="%22Fly+ash%22">Fly ash</searchLink><br /><searchLink fieldCode="DE" term="%22Concrete+construction%22">Concrete construction</searchLink><br /><searchLink fieldCode="DE" term="%22Cement%22">Cement</searchLink>
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  Label: Abstract
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  Data: For an appropriate air void system, good mechanical properties and low porosity/microcracking in alkali-activated binder systems, appropriate slag/fly ash proportioning, water and admixture contents are needed. Air entraining admixture dosages of up to 10 times the recommended dosage were necessary to obtain minimal air void properties similar to what is needed for normal portland cement concretes subjected to freezing conditions. Increasing added water resulted in increasing absorption and decreasing crack counts in concrete. Increasing fly ash contents resulted in increasing absorption and decreasing early-age crack counts. Increasing both added water and fly ash content resulted in less autogenous shrinkage. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Construction & Building Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1016/j.conbuildmat.2018.03.176
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      – Code: eng
        Text: English
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        Type: general
      – SubjectFull: Compressive strength
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      – SubjectFull: Fly ash
        Type: general
      – SubjectFull: Concrete construction
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      – SubjectFull: Cement
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      – TitleFull: Influence of added water and fly ash content on the characteristics, properties and early-age cracking sensitivity of alkali-activated slag/fly ash concrete cured at ambient temperature.
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              Text: May2018
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