Journal
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume 33, Issue 2, Pages 251-258Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2012.08.022
Keywords
Sintering; Mechanical properties; Ceramic; Geopolymer; Final microstructure
Categories
Funding
- Decommissioning, Immobilization and Management of Nuclear waste for Disposal (DIAMOND) consortium
- EPSRC
- EPSRC [EP/F055412/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/F055412/1] Funding Source: researchfish
Ask authors/readers for more resources
This research has investigated the mechanical properties and microstructure of metakaolin derived geopolymer mortars containing 50% by weight of silica sand, after exposure to temperatures up to 1200 degrees C. The compressive strength, porosity and microstructure of the geopolymer mortar samples were not significantly affected by temperatures up to 800 degrees C. Nepheline (NaAlSiO4) and carnegieite (NaAlSiO4) form at 900 degrees C in the geopolymer phase and after exposure to 1000 C the mortar samples were transformed into polycrystalline nepheline/quartz ceramics with relatively high compressive strength (similar to 275 MPa) and high Vickers hardness (similar to 350 HV). Between 1000 and 1200 degrees C the samples soften with gas evolution causing the formation of closed porosity that reduced sample density and limited the mechanical properties. (C) 2012 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available