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GLASS FIBRE REINFORCED PRECAST CONCRETE CONTAINING HIGH CONTENT POZZOLANIC MATERIALS
Glass fiber reinforced concrete (GFRC) is a composite construction material widely used as a precast exteriorelement in the construction industry. GFRC is generally composed of mixture of cement, sand, water andglass fiber. Cement production causes high energy consumption and CO2 emissions, which has negativeimpacts on the environment. Therefore, in this study, the effect of using high amount of fly ash and blastfurnace slag from industrial waste materials instead of cement is investigated. The cement was replaced by flyash and blast furnace slag in different ratios and the fresh, physical and mechanical properties of 6 differentGFRC mixes were investigated. In addition, SEM micrographs were taken after the bending test to analyze themicrostructure of GFRC. Test results showed that the workability of mixtures was modified by pozzolanaddition. Fly ash improved the workability of GFRC matrix, however synergistic effect of fly ash and slagtend to insignificantly affect the workability. The water absorption of mixtures was found as 11±3% and thedensities varied between 1910 and 2000 kg/m3. Substitution of cement with fly and slag reduced the early ageflexural strength of the mixtures, the increase in fiber content resulted in improved flexural strength and thehighest strength was observed in C100F0S0G4 mix as 12.2 MPa.
GLASS FIBRE REINFORCED PRECAST CONCRETE CONTAINING HIGH CONTENT POZZOLANIC MATERIALS
Glass fiber reinforced concrete (GFRC) is a composite construction material widely used as a precast exteriorelement in the construction industry. GFRC is generally composed of mixture of cement, sand, water andglass fiber. Cement production causes high energy consumption and CO2 emissions, which has negativeimpacts on the environment. Therefore, in this study, the effect of using high amount of fly ash and blastfurnace slag from industrial waste materials instead of cement is investigated. The cement was replaced by flyash and blast furnace slag in different ratios and the fresh, physical and mechanical properties of 6 differentGFRC mixes were investigated. In addition, SEM micrographs were taken after the bending test to analyze themicrostructure of GFRC. Test results showed that the workability of mixtures was modified by pozzolanaddition. Fly ash improved the workability of GFRC matrix, however synergistic effect of fly ash and slagtend to insignificantly affect the workability. The water absorption of mixtures was found as 11±3% and thedensities varied between 1910 and 2000 kg/m3. Substitution of cement with fly and slag reduced the early ageflexural strength of the mixtures, the increase in fiber content resulted in improved flexural strength and thehighest strength was observed in C100F0S0G4 mix as 12.2 MPa.
GLASS FIBRE REINFORCED PRECAST CONCRETE CONTAINING HIGH CONTENT POZZOLANIC MATERIALS
Amed, Bahadur (author) / Kabay, Nihat (author)
2019-05-31
Article (Journal)
Electronic Resource
English
DDC:
690
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