A study about rheological and mechanical properties of self-compacting concrete with pumice powder used as filler additive is here presented. Self-Compacting Concrete shows its peculiar characteristics in green condition. Many researches have been developed with particular reference to its rheological characteristics and with particular attention towards the techniques of self-compacting properties assessment. Other studies have been aimed at the mechanical aspects of self-compacting concrete, by investigating the SCC properties obtained by means of fillers and/or additives that deeply influence the mechanical characteristics of the material. In fact, particularly important in concrete mix-design is the type and the amount of fillers with respect to water and cement: this amount has great influence not only on self-compacting properties (fluidity, segregation, etc…), but also on the mechanical characteristics of the mixture. Volcanic materials such as white pumice have pozzolanic properties, so that it is possible to use pumice powder in making SCC with a double effect: on one hand as filler and on another hand as a pozzolanic element in the mixture. It is here presented a study about SCC characteristics when white pumice powder is used as filler with or instead of silica fumes or flying ashes. SCC properties, which are here investigated through standard testing methodologies, regard both rheological and mechanical aspects, in order to evaluate the behaviour of the mixture during casting and later on, with different times of concrete curing.

Rheological and Mechanical Properties of Self CompactingConcrete with Pumice Powder

RECUPERO, Antonino
2006-01-01

Abstract

A study about rheological and mechanical properties of self-compacting concrete with pumice powder used as filler additive is here presented. Self-Compacting Concrete shows its peculiar characteristics in green condition. Many researches have been developed with particular reference to its rheological characteristics and with particular attention towards the techniques of self-compacting properties assessment. Other studies have been aimed at the mechanical aspects of self-compacting concrete, by investigating the SCC properties obtained by means of fillers and/or additives that deeply influence the mechanical characteristics of the material. In fact, particularly important in concrete mix-design is the type and the amount of fillers with respect to water and cement: this amount has great influence not only on self-compacting properties (fluidity, segregation, etc…), but also on the mechanical characteristics of the mixture. Volcanic materials such as white pumice have pozzolanic properties, so that it is possible to use pumice powder in making SCC with a double effect: on one hand as filler and on another hand as a pozzolanic element in the mixture. It is here presented a study about SCC characteristics when white pumice powder is used as filler with or instead of silica fumes or flying ashes. SCC properties, which are here investigated through standard testing methodologies, regard both rheological and mechanical aspects, in order to evaluate the behaviour of the mixture during casting and later on, with different times of concrete curing.
2006
9788889972069
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11570/1722635
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