The effect of basalt chopped fiber reinforcement on the mechanical properties of potassium based geopolymer

Sean S. Musil, Greg Kutyla, Waltraud M Kriven

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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 languageEnglish (US)
Title of host publicationDevelopments in Strategic Materials and Computational Design III - A Collection of Papers Presented at the 36th International Conference on Advanced Ceramics and Composites, ICACC 2012
Pages31-42
Number of pages12
Volume33
Edition10
StatePublished - 2013
EventDevelopments 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 2012Jan 27 2012

Other

OtherDevelopments in Strategic Materials and Computational Design III - 36th International Conference on Advanced Ceramics and Composites, ICACC 2012
CountryUnited States
CityDaytona Beach, FL
Period1/22/121/27/12

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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    Musil, S. S., Kutyla, G., & Kriven, W. M. (2013). The effect of basalt chopped fiber reinforcement on the mechanical properties of potassium based geopolymer. In 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 (10 ed., Vol. 33, pp. 31-42)