Abstract:

In this study, physical and mechanical properties of concretes produced by using different fiber types were investigated. In the production of concrete, the water / cement ratio was kept as 0.55 and the cement amount was kept constant as 300 kg/m3. As aggregate, 0-4mm crushed sand and 4-16mm crushed stone aggregate were used. Basalt and carbon were selected as fiber type and 0.5%, 1%, 1.5% and 2% by volume were added to the concrete. Concrete samples with dimensions of 100x100x100mm for compressive strength and Archimedes weighing, 100x100x350mm for determination of flexural strength and 71x71x71mm for abrasion test were produced. Concrete samples were subjected to Archimedes, ultrasounds, abrasion, bending and pressure tests. The concrete samples were cured in the standard curing pool for 7 and 28 days after being taken from the mold. The compressive strength of the concretes filled on the 7th day were measured. The physical properties of the samples that were completed after 28 days such as water absorption percentage, porosity and unit volume weight, weight losses in bending test were determined and their flexural and compressive strengths were measured. Water absorption and porosity values increased with increasing fiber ratio. When the ultrasound transition rates were examined, it was observed that the samples using basalt fiber were higher than the concretes using carbon fiber. It has been observed that basalt fiber has more resistance than carbon in mechanical strength and abrasion resistance.

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