The high temperature effect on the fiber reinforced self compacting concrete produced with milled pumice powder

In this thesis, high temperature effect was investigated in steel fiber reinforced self compacting concrete produced with milled pumice powder(MPP). For this purpose, %5, %10, %15, %20 ÖPT mixtures and control concrete, total of 5 series concrete samples were produced. The ratio of stell fibers, superplasticizer and water/powder material were kept constant in all blends. 60 pieces of 150 mm *150 mm *150 mm and 18 pieces of 100 mm * mm 100 * 100 mm cube specimens and 18 pieces of 100 mm * 100 * 350 mm beam specimens were poured to keep at different curing periods. UPV measurements and compressive strength experiments were performed after different curing periods of all blends. The specimens were exposed to high temperatures of 200 °C, 400 °C, 600 °C and 800 °C after 28 days of curing. After exposure to high temperature, compressive strengths and UPV measurements of the specimens were performed. Also, microscopic images of stell fibers in concrete were analyzed after high temperatures. After high temperatures; the decrease in the compressive strength of mixtures using MPP is higher than control mixtures. Reduction rates of all blends at UPV are close to each other. Even at highest temperatue value which is 800 °C disintegration did not occur.