Tension stiffening is still a matter of discussion into the scientific community. The study of this phenomenon is also relevant in structural members made of fibre reinforced concrete. This paper aims at investigating tension stiffening by presenting tension-test results on reinforced concrete prisms having different sizes, reinforcement ratios, amount of fibres and concrete strength. The influence of fibres in determining a more distributed crack patterns, characterized by narrower and more closely cracks, will be discussed. It is worth noticing that the expected smaller crack widths in addition to a low concrete porosity (which strictly depends on the water/cement ratio) is of paramount importance for enhancing structural durability.
The effect of concrete strength on cracking of SFRC members
TIBERTI, Giuseppe;MINELLI, Fausto;PLIZZARI, Giovanni;
2013-01-01
Abstract
Tension stiffening is still a matter of discussion into the scientific community. The study of this phenomenon is also relevant in structural members made of fibre reinforced concrete. This paper aims at investigating tension stiffening by presenting tension-test results on reinforced concrete prisms having different sizes, reinforcement ratios, amount of fibres and concrete strength. The influence of fibres in determining a more distributed crack patterns, characterized by narrower and more closely cracks, will be discussed. It is worth noticing that the expected smaller crack widths in addition to a low concrete porosity (which strictly depends on the water/cement ratio) is of paramount importance for enhancing structural durability.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
