Andújar-Zengotita, Juan F.

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    Strength of mortar mixtures with added polymeric fibers extracted from recycled tires
    (2018) Andújar-Zengotita, Juan F.; Acosta-Costa, Felipe J.; College of Engineering; Cáceres-Fernández, Arsenio; Perales-Pérez, Oscar; Department of Civil Engineering; Ramón-Arroyo, José
    The problem of tire waste in Puerto Rico has become an increasing concern. The Island has been accumulating tires for years. These tires occupy unnecessary space and hold water that can be home for mosquitoes which represent health danger. On the other hand, tire recycling produces varied materials including rubber crumbs, steel fibers, and synthetic fibers which may be reused. The objective of this investigation was to evaluate the utilization of the recovered synthetic fibers as reinforcement for Portland Cement Concrete. To complete this evaluation, changes in properties such as compressive strength, shrinkage, and tensile strength of mortar mixtures reinforced with the synthetic fibers were evaluated. As the technology advances, the utilization of polymeric fibers to reinforce concrete in construction has increased over the past years. Some examples of commercial structural fibers are: STRUX® 85/50 Synthetic Macro Fiber Reinforcement, STRUX® 90/40 Synthetic Macro Fiber Reinforcement, and STRUX® BT50 Synthetic Macro Fiber Reinforcement. These fibers are used as textiles or individual fibers, substituting steel reinforcement. A special “ready-mix” is also produced in Puerto Rico with fiber reinforcement that claims to have better shrinkage resistance. This investigation focused in studying the possibility of using the recycled polymeric fiber in construction.