V2I10P27

Compressive Strength Study of Recycle Aggregate

Chous Lahaji Sufiyan Bin Obed^1*,  A. B. Vawhale²

Abstract

The Construction and demolition (C&D) waste output has been greatly influenced by the ongoing increase in construction activities and rapid urbanization. Although disposing of this material presents significant environmental issues, its composition—mostly concrete debris—offers significant possibilities for recycling as aggregates in the creation of fresh concrete. In order to support sustainable building practices, the current study focuses on the efficient use of recycled aggregates to create long-lasting M25 grade concrete. To determine their suitability, recycled aggregates that were purchased from ten distinct locations throughout Ch. Sambhajinagar were described. These aggregates have a lower specific gravity and a higher water absorption rate due to attached mortar, which negatively impacts compressive strength. This was addressed by proposing and testing a workable technique for removing adhered mortar. Recycled aggregates were used in experimental studies at percentages of 0%, 50%, 60%, and 100% in place of natural aggregates. After testing concrete examples, it was discovered that using the mix design approach created in this work, replacing 60% of the natural aggregate with recycled aggregate with a maximum size of 20 mm produced the required compressive strength.

Keywords:

Concrete, Compressive strength, Strength, RCA