RETRACTED: Strength Assessment and Bonding Study of Aluminum Short Fiber-Reinforced Gypsum Composites

In this study, tensile strength of gypsum-based composite with aluminum fibers up to 15 vol.% was studied. To increase the interfacial bond strength between fibers and matrix, aluminum fibers were anodized under different conditions. Single fiber pull-out tests were carried out to investigate the bond strength. The interface was examined by scanning electron microscope. The ability of the composites to withstand longitudinal tensile load was also studied by tensile tests of dog bone-shaped, randomly oriented fiber-reinforced gypsum. By the introduction of aluminum fibers in gypsum as a randomly oriented composite, considerable increment in the strength is achieved and the toughness of the composite improves significantly. Although, anodizing provides a considerable effect on pull out force via development of stronger interface with gypsum, it does not significantly affect the overall strength of the composite. A mathematical model has been developed to predict the strength of the composites with up to 15 ...