Details

Autor(en) / Beteiligte

• Scorza, Daniela
• Ronchei, Camilla
• Vantadori, Sabrina
• Zanichelli, Andrea

Titel

Size-effect independence of hybrid fiber-reinforced roller-compacted concrete fracture toughness

Ist Teil von

• Composites. Part C, Open access, 2022-10, Vol.9, p.100306, Article 100306

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2022

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• •A micromechanical model is used to simulate HyFR-RCC fracture behavior.•The MTPM is applied to numerical load-CMOD curves to compute the fracture toughness.•Numerical results and experimental data, taken from literature, are compared.•RCC specimens with different sizes are numerically simulated.•Fracture toughness size-effect independence is proved. The present paper aims to prove the size-effect independence of Hybrid Fiber-Reinforced RCC (HyFR-RCC) fracture toughness determined through the Modified Two-Parameter Model (MTPM). A micromechanical numerical model is applied to simulate the fracture behavior of seven series of single edge-notched specimens, made of both plain-RCCs and FR-RCCs (single and hybrid reinforcements), subjected to three-point bending. The MTPM is applied to the numerical load vs CMOD curves to compute the fracture toughness. A comparison with experimental values, available in the literature, is performed. Therefore, RCC specimens with different sizes are numerically simulated and the fracture toughness is analytically determined through the MTPM, proving the size-effect independence.