Innovative Precast Concrete Slabs Made from Recycled Concrete Reinforced with Frps for Stockyard Constructions
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Abstract
This research presents a concurrent engineering approach for designing precast concrete slat units (WU-ecoSLAT) made from recycled aggregate concrete reinforced with composite bars for pig slatted flooring. Precast slats are made from 100% recycled concrete aggregates to replace the natural coarse aggregate. A total of 12 test specimens were constructed and tested under four-point bending to assess the moment capacity of the WU-ecoSLAT units, compared to that of the commercially available slats. Based on the test results, it was found that the moment capacity of WU-ecoSLAT was higher than the commercial units by 3 times. Analytical and numerical studies were also carried out to investigate the load-carrying capacity of the WU-ecoSLAT units. Due to the nature of the opening of the slat unit, the analytical predicted moment capacities were less than the experimental values by up to 20%. However, when the concrete damage plasticity models were used in finite element analysis, numerical predictions were shown to agree well with the experimental values (by 5-10%).
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