Journal
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
Volume 103, Issue 2, Pages 779-783Publisher
WILEY
DOI: 10.1111/jace.16835
Keywords
akali activation; geopolymers; mechanical properties; thermal analysis
Categories
Funding
- National Natural Science Foundation of China [51874222]
- Major Technical Innovation Project of Hubei Province [2018ACA157]
- Wuhan University of Technology [2018YS-052]
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The main purpose of this study is to develop a user-friendly one-part geopolymer using vanadium tailing (VT). Geopolymeric precursor consists of activated VT and metakaolin that can react directly with water to form geopolymers. The roasting temperature plays an important role in the VT activation, which affects the compressive strength of the final geopolymer. The geopolymer with accepted compressive strength, that is 29.0 MPa after 7 days curing in ambient condition, can be prepared using VT after thermal activation at appropriate temperature (400-600 degrees C). As the roasting temperature is increased to 700 degrees C, the VT is molten and sintered and the ability of providing alkaline and Si4+ is drastically weakened, which results in a poor compressive strength geopolymer.
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