Mechanical Properties of Concrete Reinforced with Alkali-Resistant Glass Fibers and Polypropylene Fibers

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Lecture Notes in Civil Engineering


The addition of steel fibers improves the tensile and flexural strengths of plain concrete. However, steel fibers are prone to corrosion, affecting the performance of steel fiber reinforced concrete. This study investigates the mechanical properties of concrete reinforced with 1.5% alkali-resistant glass fibers (AR-GF) and 0.15% polypropylene fibers (PF) by volume of concrete. Ready-mix concrete was used to cast the concrete specimens. The concrete specimens were tested at the age of 28 days to determine the compressive, split tensile and flexural strengths of the alkali-resistant-glass fiber reinforced concrete (AR-GFRC) and polypropylene fiber reinforced concrete (PFRC) as compared to plain concrete (PC). Based on the results of the experimental program, the compressive strengths of the AR-GFRC and PFRC decreased, while the flexural strengths increased as compared to PC. The split tensile strength of AR-GFRC decreased, while the split tensile strength of PFRC increased as compared to PC.

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