Bond Performance of Mild Reinforcing Steel in Fiber Reinforced Cement-Limiting Concrete (FRCLC)
Journal Title: International Journal of Engineering and Science Invention - Year 2018, Vol 7, Issue 6
Abstract
Due to the emissions created during the production of cement, researchers have been developing new mix designs with less cement and comparable performance. One such mix design is called fiber reinforced cement-limiting concrete (FRCLC). FRCLC uses a lower paste volume, replacement of cement with fly ash, and polypropylenefibers to obtain comparable fresh and hardened properties to conventional concrete. This study focuses on the bond performance of FRCLC when compared to anOklahoma Department of Transportation Class AA conventional concrete (CC) mix design. Two different FRCLC mix designs were tested. The first, EcoBridge-Crete 1 (EBC1), contains 0.5 lb/yd3 of micro-fibers. The second, Eco-Bridge-Crete 2 (EBC2), had the same dosageof micro-fibers as EBC1, along with 3.0 lbs./yd3 of macro-fibers. All concrete mixes tested used 20% replacement of cement with Class C fly ash. Beam splice test specimens were used to evaluate the bond performance. Test results showed that EBC1 had comparable bond strengths to the CC mix design, while EBC2 was much weaker in bond.
Authors and Affiliations
Trevor J. Looney, Jeffery S. Volz
Keywords
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