Structural Behavior of Self-Compacting Reinforced Concrete One-Way Slab with Recycled Glass or Plastic as A Fine Aggregate Under Repeated Loads

Abstract

This paper deals with an experimental study on the structural performance of one-way slabs made of self-consolidation concrete (SCC) with waste plastic and glass as partial substitutes for fine aggregate. A substitution ratio of 33% was employed, and six slab samples measuring 700 mm by 100 mm by 1700 mm, with uniform reinforcement, were categorized into two groups, each including three samples. The initial group underwent static loading, and the subsequent group was subjected to repeated loading. Subsequently, they underwent testing, and the effect of the research factors was examined. The results indicate that the structural behavior of slabs, containing waste as a fine aggregate, is comparable to that performance slab with regular fine aggregates under monotonic and repeated loading. During static loading, the maximum load exhibited a reduction of about 0-3.33% alongside a decline in stiffness. The findings of the specimens submitted to repeated load exhibited variety; the maximum load was reduced by 13.46% with recycled plastic, while the slab with recycled glass increased by 5.77%. All samples exposed to repeated load demonstrated a diminished in ultimate load, stiffness, and ductility. relative to those exposed to monotonic load; slabs using recycled plastic showed a 22.41% decrease in load failure.