Geopolymers for Structural Ceramic Applications
Abstract
Geopolymers show promise in a variety of structural ceramic based application including refractory adhesives for ceramics and metals, thermal shock resistant molds, fiber reinforced composites, and as a precursor in the formation of pure ceramic phases such as leucite (KA1Si(sub 2)O(sub 6) and pollucite (CsA1Si(sub 2)O(sub 6) with tailorable porosity and thermal expansion. In this work, the scientific details of using geopolymers in these emerging areas were explored via mechanical and structural testing, and within an industrial setting. A variety of techniques including shear strength testing, microstructural analysis, laser scanning confocal microscopy, and X-ray analysis were to characterize fabricated materials. As adhesives, geopolymers were effectively used to bond low-carbon steel and borosilicate glass at ambient and elevated temperatures (450 degrees C). The steel/geopolymer bonds had shear strengths between 2 - 3 MPa while the borosilicate/geopolymer bond strength was undetermined; during testing, fracture occurred within the glass itself, not within the geopolymer bond or at the interlace.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 31, 2006
- Accession Number
- ADA463559
Entities
People
- Douglas C. Comrie