:Rheological properties of self compacting concrete have been investigated and compared with those of normal concretes with same strength. Compressive strength and elastic modulus evolution with time have been monitored along a period of time of about six months. Creep strains have been recorded at two different stress levels, 35 percent and 55 percent of compressive strength. Shrinkage behavior of two mixes has been also investigated both in drying and sealed conditions. The experimental results confirm that the greater amount of fine particles increases significantly shrinkage and creep deformation of self compacting concretes. Comparison with MC90 and EC2 provisions suggests that a recalibration process is required.
A comparison between long term properties of self compacting concretes and normal vibrated concretes with same strength / C. Mazzotti; M. Savoia; C. Ceccoli. - STAMPA. - (2005), pp. 523-528. (Intervento presentato al convegno Concreep 7 tenutosi a Nantes, Francia nel 12-14 settebre 2005).
A comparison between long term properties of self compacting concretes and normal vibrated concretes with same strength
MAZZOTTI, CLAUDIO;SAVOIA, MARCO;CECCOLI, CLAUDIO
2005
Abstract
:Rheological properties of self compacting concrete have been investigated and compared with those of normal concretes with same strength. Compressive strength and elastic modulus evolution with time have been monitored along a period of time of about six months. Creep strains have been recorded at two different stress levels, 35 percent and 55 percent of compressive strength. Shrinkage behavior of two mixes has been also investigated both in drying and sealed conditions. The experimental results confirm that the greater amount of fine particles increases significantly shrinkage and creep deformation of self compacting concretes. Comparison with MC90 and EC2 provisions suggests that a recalibration process is required.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
