Filling Ability and Passing Ability of Self-Consolidating Concrete

The authors discuss the influence of three key parameters of mixture composition of self-consolidating concrete (SCC) on SCC's passing and filling abilities by studying composite factorial design through statistical models, a part of Europe's "Testing SCC" project. High-range water-reducing admixture (HRWRA) and water dosages and coarse aggregate volume were study parameters. Derived statistical model responses were blocking ratio (L-box), Orimet flow time, V-funnel flow time, T60, T50, and slump flow. After adding the first water, test retention was also measured 30 minutes later and again 60 minutes later. For mixtures made with 220 to 360 L/cu m (5.97 to 9.76 cu ft/cu yd) of coarse aggregates, 3.8 to 5.8 kg/cu m (570 to 970 mL/100 kg of binder) of HRWRA, and 188 to 208 L/m3 (317 to 350 lb/cu yd) of water, the models were valid. The authors discuss using such models to achieve a good balance between passing and filling abilities and concrete mixture optimization. Model usefulness is highlighted using examples of isoresponse surfaces showing coupled and single effects of mixture parameters on blocking ratio, Orimet flow time, V-funnel flow time, T60, T50, and slump flow. Various trade-offs between derived responses affecting passing and filling abilities and mixture parameters are also illustrated.

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  • Authors:
    • Sonebi, Mohammed
    • Grunewald, Steffen
    • Walraven, Joost
  • Publication Date: 2007

Language

  • English

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Filing Info

  • Accession Number: 01049912
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 3 2007 9:06AM