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Resumo(s)
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.
Descrição
Palavras-chave
Mortar Compressive strength Fresh-properties Mineral fillers Selfcompacting concrete Spread test V-funnel test