Details

Autor(en) / Beteiligte

• Skvara, F
• Kopecky, L
• Nemecek, J
• Bittnar, Z

Titel

MICROSTRUCTURE OF GEOPOLYMER MATERIALS BASED ON FLY ASH

Ist Teil von

• Ceramics (Praha), 2006-01, Vol.50 (4), p.208-215

Erscheinungsjahr

2006

Link zum Volltext

Quelle

EZB Free E-Journals

Beschreibungen/Notizen

• A geopolymer prepared by brown coal fly ash alkali activation contained mainly structures of the types AlQ4(4Si)and SiQ4(3Al) and SiQ4(2-3Al). A temporary phase with different composition was not found between the geopolymer and aggregate as it is in concretes made from Portland cement. The geopolymer composition was almost the same in the close nearness even in the geopolymer matrix. The elastic modulus evaluated for the mixed geopolymeric and C-S-H phase by means of nanoindentation was 36.1 plus or minus 5.1 GPa. Such a result is comparable (a little higher) to ordinary Portland cement pastes. 28 refs.