Abstract
This work briefly introduces geopolymers and some geopolymer composites having typical molar compositions of SiO 2/Al 2O 3 = 4, M 2O/SiO 2 = 0.3, and H 2O/M 2O =11, where M = Na, K, or Cs. As seen by SEM and TEM, the microstructure was a nanoparticulate (<10 nm) and nanoporous material having a nominal composition of 4SiO 2·Al 2O 3, cross-linked with cations from Na 2O, K 2O, or Cs 2O. Some structural geopolymer composites reinforced with stainless steel powder, basalt chopped fibers, and/or fiber weaves were prepared. Using six layers of natural basalt fiber weave reinforcements, the three-point bending strength and work of fracture of / in. 2 × 6 in. long bend bars were increased from an average of 2.75 to 10.25 MPa and from 0.05 to 21.82 kj/m 2, respectively.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 57-79 |
| Number of pages | 23 |
| Journal | Ceramic Engineering and Science Proceedings |
| Volume | 25 |
| Issue number | 1 |
| State | Published - 2004 |
| Event | 64th Conference on Glass Problems - Urbana-Champaign, IL, United States Duration: Oct 28 2003 → Oct 29 2003 |
ASJC Scopus subject areas
- Ceramics and Composites
- Materials Chemistry