This review synthesises recent evidence on elastic properties of high performance recycled concrete from a materials to structure perspective. At comparable strength, static elastic modulus decreases with increasing recycled coarse aggregate. Typical pena

This review synthesises recent evidence on elastic properties of high performance recycled concrete from a materials to structure perspective. At comparable strength, static elastic modulus decreases with increasing recycled coarse aggregate. Typical penalties are about 0 to 10% at 0 to 30% replacement, about 5 to 20% at 30 to 60% replacement, and about 15 to 30% at 60 to 100% replacement. Low water to binder ratio with silica fume or slag improves the interfacial transition zone and reduces the loss. Dynamic modulus from resonance or ultrasonic methods exceeds static values by about 5 to 15% at 28 days under similar moisture. Poisson ratio is usually about 0.16 to 0.23. Fibres do not raise modulus at equal strength but can moderate losses at high replacement. The review compares empirical, micromechanics, numerical representative volume element and data driven models, and proposes a concise reporting and validation protocol to support serviceability focused design.