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GOMES, Paulo Cézar Correia et al. Mixture proportioning of high-strength self-compacting concrete using simple test methods. In: INTERNATIONAL CONFERENCE ON HIGH-PERFORMANCE CONCRETE, PERFORMANCE AND QUALITY OF CONCRETE STRUCTURES, 3., 2002, Recife. Anais… Recife, 2002.
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Número de Trabalhos: 7 (Com arquivo PDF disponíveis: 2)
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Dados do autor na base InfoHab:
Número de Trabalhos: 1 (Nenhum com arquivo PDF disponível)
Citações: Nenhuma citação encontrada
Índice h: Indice h não calculado  
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Abstract

In this study an experimental procedure for obtaining high-strength self-compacting concrete (HSSCC) is presented. The concrete is assumed to be a two-phase material consisting of paste and aggregates. The paste composition is defined based on experience with high strength concrete, and using the Marsh cone and mini-slump tests for optimizing the superplasticizer and filler dosages, respectively. The aggregate skeleton is optimized for the minimum void content in a dry uncompacted mix. The paste content is determined through tests on the fresh concrete for determining the self-compactability (i.e., flowability, passing ability and resistance against segregation) in addition to the compressive strength in the hardened state. The tests on the fresh concrete are the slump flow, V-funnel, L-box and a U-pipe. The components used in the concrete are high-strength cement, silica fume, a copolymer-based superplasticizer, limestone filler and crushed limestone aggregates (with a maximum size of 12 mm). An optimized self-compacting concrete with a 7-day compressive strength of 60 MPa has been obtained, with a w/c = 0.4, filler/cement dosage of 0.3 and a paste content of 38% by volume.
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