In the present paper, the results of an experimental campaign concerning the rheological properties of hardened self-compacting concrete are presented. Four mixes of self-compacting concrete have been employed, with different compressive strength. Strength levels have been selected to cover the range of application from cast-in-place to prestressed structures. For each mix, compressive strength and elastic modulus evolution with time have been monitored over a period of about one year. Creep tests have also been performed at two different stress levels, 35% and 55% of compressive strength, and at two different ages at loading (7 and 28 days). The influence of concrete strength, stress level and aging have been observed. Finally, experimental data are compared with international standard provisions.
COMPARISON BETWEEN LONG TERM PROPERTIES OF SELF COMPACTING CONCRETES WITH DIFFERENT STRENGTH / Mazzotti C.; Ceccoli C.. - ELETTRONICO. - (2008), pp. 1-6. (Intervento presentato al convegno SCC 2008: Challenges and Barriers to Application The third North American Conference on the Design and Use of Self-Consolidating Concrete tenutosi a Chicago nel 10-12 Ottobre 2008).
COMPARISON BETWEEN LONG TERM PROPERTIES OF SELF COMPACTING CONCRETES WITH DIFFERENT STRENGTH
MAZZOTTI, CLAUDIO;CECCOLI, CLAUDIO
2008
Abstract
In the present paper, the results of an experimental campaign concerning the rheological properties of hardened self-compacting concrete are presented. Four mixes of self-compacting concrete have been employed, with different compressive strength. Strength levels have been selected to cover the range of application from cast-in-place to prestressed structures. For each mix, compressive strength and elastic modulus evolution with time have been monitored over a period of about one year. Creep tests have also been performed at two different stress levels, 35% and 55% of compressive strength, and at two different ages at loading (7 and 28 days). The influence of concrete strength, stress level and aging have been observed. Finally, experimental data are compared with international standard provisions.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
