Abstract
The processing and mechanical properties of potassium-based geopolymer (K2O·Al2O3·4SiO 211H2O) composites containing 1/2 inch long basalt chopped fiber reinforcement have been evaluated and compared to previous data for 1/4 inch long basalt fiber reinforcement. Geopolymer composite test samples were hand fabricated at ambient temperature and cured in a constant humidity, 50°C temperature/humidity chamber. The effects of varying weight percent of fiber reinforcement and heat treatment temperature for fixed fiber content were examined in this study. Reinforcement by ten weight percent basalt chopped fibers significantly improved the room temperature average bend strength over that of pure geopolymer from roughly 2 MPa to 27 MPa. The composite was able to preserve 75% bend strength after heat treatment to 200°C and 12% strength after heat treatment to 600°C, with only five weight percent of fiber reinforcement. Addition of 1/2 inch long fibers showed 20-50% strength increases over the use of 1/4 inch fibers. A Weibull statistical analysis was performed showing a significant increase in reliability with increasing amounts of chopped basalt fiber reinforcement.
Original language | English (US) |
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Title of host publication | Developments in Strategic Materials and Computational Design III - A Collection of Papers Presented at the 36th International Conference on Advanced Ceramics and Composites, ICACC 2012 |
Pages | 31-42 |
Number of pages | 12 |
Volume | 33 |
Edition | 10 |
State | Published - 2013 |
Event | Developments in Strategic Materials and Computational Design III - 36th International Conference on Advanced Ceramics and Composites, ICACC 2012 - Daytona Beach, FL, United States Duration: Jan 22 2012 → Jan 27 2012 |
Other
Other | Developments in Strategic Materials and Computational Design III - 36th International Conference on Advanced Ceramics and Composites, ICACC 2012 |
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Country/Territory | United States |
City | Daytona Beach, FL |
Period | 1/22/12 → 1/27/12 |
ASJC Scopus subject areas
- Ceramics and Composites
- Materials Chemistry