Investigation of Concrete Properties with Natural & Recycled Aggregates
DOMAINConcrete Technology, Materials Engineering, Sustainability
TOOLS & TECHNIQUESUniversal Testing Machine (UTM), Ultrasonic Pulse Velocity (UPV) Meter, Abrams Slump Cone
Conducted for Properties of Concrete, this study evaluated the structural and physical performance of concrete produced with 50% recycled coarse aggregates (RCA) as a sustainable aggregate alternative.
Key Engineering Scope
- Mix Proportioning: Cast control batches with 100% natural coarse aggregates alongside test batches utilizing 50% recycled crushed concrete aggregates.
- Workability Testing: Evaluated fresh concrete workability via standard slump cone tests, documenting increased paste water demand from porous aggregate mortar.
- Compressive Strength Tests: Tested 7-day and 28-day cylinder compressive strengths on a Universal Testing Machine, mapping strength variations against control mixes.
- Non-Destructive UPV Testing: Conducted Ultrasonic Pulse Velocity measurements per ASTM C597 to inspect internal density, voids, and relative structural homogeneity.