Özet:

The contribution of glass fiber and concrete structure ensures the achievement of superior mechanical and chemical properties for macro-scale structural applications. These materials are also known as "Cam Fiber Added Beton (CFKB)" today. Although many studies have been conducted to illuminate the structure-specific relationships in CFKB materials, focusing on microscopic characteristics to better understand the role of fiber in the concrete matrix is still a difficult goal today. Thus, the purpose of this study is to reveal the behavior of commercial glass fiber in the obtained concrete structures, with the help of a scaned electron microscope technique. For this purpose, the broken surfaces of CFKB samples are characterized by the use of a high-rise field scanning electron microscope (FESEM, Carl Zeiss Supra 50VP), which contains an energy-driven X-ray spectrometer (EDXS, Oxford Instruments 7430) running at 30 kV by variable pressure (VP) method. Reflecting electron (BSE) shows the general micro-structure of the CFKB material. After all, the irregular distribution of Zrca-rich glass fiber in the main calcium-based silicate concrete matrix phases has been clearly detected and the situation has also been confirmed by EDX analysis. Furthermore, weak bonds between the stages of glass fiber and matrix have been observed. In fact, this unexpected microbuilding development can be considered as a visible proof of the non-microscopic techniques, for example; simultaneous differential thermal analysis (DTA) / thermal gravimetric analysis (TGA) and Fourier conversion infrared spectroscopy (FTIR) and the existing very thin polymer coating determined on the fiber surfaces of the water disadvantage (hydrophobic) trend.

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