Green concrete composite incorporating fly ash with high strength and fracture toughness

Based on the obtained results it can be concluded that, it is possible to make green concrete containing FA with high compressive strength and fracture toughness. The properties of composites with the additive of FA depend on the age of the concrete during tests. 20% additive of FA guarantees high fcm and KIcS in mature concretes. Moreover results of the KIcS and the fcm are convergent qualitatively.