Browsing Naturwissenschaftliche Fakultät by Subject "X ray diffraction analysis"

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Microstructure and mechanical, physical and structural properties of sustainable lightweight metakaolin-based geopolymer cements and mortars employing rice husk

Riyap, H.I.; Bewa, C.N.; Banenzoué, C.; Tchakouté, H.K.; Rüscher, C.H.; Kamseu, E.; Bignozzi, M.C.; Leonelli, C. (Abingdon : Taylor and Francis Ltd., 2019)

This work focuses on an in-depth investigation of the formation of pores in the structure of lightweight geopolymer cements and mortars using rice husk as a foaming agent. The hardener used in this study was sodium waterglass. ...
Nanocrystalline versus microcrystalline Lo2O:B2O 3 composites: Anomalous ionic conductivities and percolation theory

Indris, Sylvio; Heitjans, Paul; Roman, H. Eduardo; Bunde, Armin (College Park, ML : American Physical Society, 2000)

We study ionic transport in nano- and microcrystalline (1−x)Li2O:xB2O3 composites using standard impedance spectroscopy. In the nanocrystalline samples (average grain size of about 20 nm), the ionic conductivity σdc increases ...
Water resistance and thermal behavior of metakaolin-phosphate-based geopolymer cements

Nobouassia Bewa, Christelle; Tchakouté, Hervé K.; Fotio, Daniel; Rüscher, Claus H.; Kamseu, Elie; Leonelli, Cristina (Abingdon : Taylor and Francis Ltd., 2018)

The main target of this work was to investigate the thermal behavior and water resistance of geopolymer cement made from metakaolin as an aluminosilicate source using phosphoric acid solution (10 M) as a hardener. The ...

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