Screening of Low Clinker Binders, Compressive Strength and Chloride Ingress

Mette Rica Geiker, Klaartje De Weerdt, Sergio Ferreiro Garzón, Mads Mønster Jensen, Björn Johannesson, Alexander Michel

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Abstract

This paper reports an initial screening of potential new binders for concrete with reduced CO2-emission. Mortars cured saturated for 90 days are compared with regard to a) compressive strength of mortars with similar water-to-binder ratio, and b) chloride ingress in similar design strength mortars exposed to seawater. The reference used was a binder composition typical for a Danish ready mixed concrete for aggressive environments and strength class C35/45. Based on the present investigation and assumptions up to around 15% reduction in CO2 emission from binder production might be obtained without compromising the 90 days compressive strength and resistance to chloride ingress in marine exposure by using selected alternative binders.
Original languageEnglish
JournalNordic Concrete Research
Volume57
Pages (from-to)23-38
ISSN0800-6377
Publication statusPublished - 2017

Keywords

  • Cement
  • Chlorides
  • CO2-emission
  • Supplementary cementitious materials (SCM)

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