MK-GGBS foams: Relation between mechanical parameters and morphological parameters
May 27-June 1, 2018
This study aims to link the thermomechanical properties of blended metakaolin-ground granulated blast furnace slag (MK-GGBS) foam concrete (FC) to their morphological parameters. The AAM FC matrix is composed of MK, GGBS and an alkaline solution. The binder is composed of 62.5% of MK, 12.5% of GGBS and 25% of dry extract of alkaline solution. Water came from the alkaline solution and additional water to reach a water/binder ratio of 0.36. The AAM paste was aerated with different H2O2 contents (1, 1.5 and 2%) and stabilized with surfactant. The surfactant content ranged from 0.002 to 0.05 %. Lightweight AAMs were obtained with density from 264 to 480 kg/m3. The analysis of the sectional view pictures revealed that AAMs FC porous structure is highly influenced by both H2O2 and surfactant contents. The H2O2 content modify the FC density while the surfactant content mostly modified the bubble distribution at a constant density.
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Martin Cyr, Gabriel Samson, Christophe Tenailleau, and Benjamin Duployer, "MK-GGBS foams: Relation between mechanical parameters and morphological parameters" in "International Conference on Alkali Activated Materials and Geopolymers: Versatile Materials Offering High Performance and Low Emissions", J. Provis, University of Sheffield C. Leonelli, Univ. of Modena and Reggio Emilia W. Kriven, Univ. of Illinois at Urbana-Champaign A. Boccaccini, Univ. of Erlangen-Nuremberg A. Van Riessen, Curtin University, Australia Eds, ECI Symposium Series, (2018). http://dc.engconfintl.org/geopolymers/65