Abstract
This study investigates the suitability of utilizing Self-Compacting Concrete (SCC) as a repair material for concrete structures. Various SCC mixtures were formulated with different compositions, including 100% cement, 30% limestone fillers, 40% blast furnace slag, and 10% silica fume. The fresh properties, such as fluidity, deformability, and stability, were evaluated to optimize the SCC mixtures for repair applications. The mechanical properties, including compressive strength, tensile strength, and elastic modulus, were assessed and compared to vibrated ordinary concrete (VOC). Additionally, the bond strength between the SCC repair material and the existing concrete substrate was investigated using simulated repair specimens subjected to indirect tensile bond and splitting tensile bond tests. The results demonstrated the superior mechanical performance of SCC compared to VOC, with higher compressive and tensile strengths. Furthermore, the incorporation of mineral additives, such as limestone fillers, slag, and silica fume, enhanced the mechanical properties and bond strength of the SCC mixtures. The study highlights the potential advantages of using SCC over VOC for concrete repair applications, offering improved mechanical performance and adhesion characteristics.
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