This paper reports the usefulness of nanoindentation as a characterization and monitoring tool for studying thermal behaviour of Geopolymer materials. The influence of the manufacturing process of Na-Geopolymers in their micromechanical properties and thermal behaviour has been studied. Two types of metakaolin-based geopolymer panels with almost identical composition were prepared by injection and pouring methods. Micro-mechanical properties of the two samples exposed to high temperatures up to 1000 degrees C were studied by nanoindentation technique, supplemented by X-ray diffraction (XRD), Nuclear magnetic resonance (NMR), Thermogravimetric analysis (TGA) and Microscopy. Remarkable differences in micro-mechanical properties and thermal behaviour between the two samples were found. Statistical nanoindentation has been successfully used to provide information about the micro-mechanical properties of different phases in the material and their volume distributions.
|Title of host publication||NANOTECHNOLOGY IN CONSTRUCTION 3, PROCEEDINGS|
|Editors||Z. Brittnar, P.J.M. Bartos, J. Nemecek, V. Smilauer, J. Zeman|
|Publication status||Published - 2009|
Belena, I., & Zhu, W. (2009). Nanoindentation Study of Na-Geopolymers Exposed to High Temperatures. In Z. Brittnar, P. J. M. Bartos, J. Nemecek, V. Smilauer, & J. Zeman (Eds.), NANOTECHNOLOGY IN CONSTRUCTION 3, PROCEEDINGS (pp. 169-174). Spring-Verlag London. https://doi.org/10.1007/978-3-642-00980-8_22