Material characterization of geopolymer mortar for its beneficial use in composite construction
نویسندگان
چکیده
This paper investigates material properties of metakaolin/slag-based geopolymer mortar (GPM), relevant for composite action with conventional Portland cement-based concrete (PCC). GPM formulations different workability (soft and stiff-plastic consistencies) were developed characterized regard to their compressive tensile strength development over time, shrinkage behaviour during hardening under ambient conditions, as well thermal expansion. With the experimental data obtained, a coefficient expansion equations predicting calculated. The GPMs exhibited significant autogenous drying shrinkage. Additionally, high very early shrinkage, tested by new image correlation method, occurred immediately after setting dry conditions. Thereby, observed extent strongly depended on specimens’ thicknesses. Furthermore, basic characteristics enlightened compared PCC.
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ژورنال
عنوان ژورنال: RILEM technical letters
سال: 2021
ISSN: ['2518-0231']
DOI: https://doi.org/10.21809/rilemtechlett.2020.125