Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.6/585
Título: Parameters for Self-compacting Concrete Mortar Phase
Autor: Oliveira, Luiz António Pereira de
Nepomuceno, Miguel Costa Santos
Palavras-chave: Mortar
Compressive strength
Fresh-properties
Mineral fillers
Selfcompacting concrete
Spread test
V-funnel test
Data: 28-Abr-2010
Resumo: This paper reports an experimental study on the mortar phase for selfcompacting concrete. A series of mortars were produced with similar flow properties, measured by spread and v-funnel tests, adequate to produce self-compacting concrete. The water content and the modified carboxylic superplasticizer dosage were determined experimentally for each mortar. Different percentages of cement replacement materials were used in binary blends, each one combining one of the two types of cement with one of the three mineral additions selected: limestone powder, granite filler and fly ash. Each of the binary blends of powders was combined in five different proportions in volume with the fine aggregate (Vp/Vs). Mortars were tested for compressive strength at 28 days age and this value was related to the water/cement ratio, the percentage of replacement materials, and Vp/Vs parameter. The analysis revealed the possibility of establishing adequate mortar parameters to obtain simultaneously the self-compactability and the required compressive strength of self-compacting concrete.
URI: http://hdl.handle.net/10400.6/585
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