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TitleSteel fibre reinforced self-compacting concrete for grid foundations of single-family houses
Author(s)Alves, Nuno
Barros, Joaquim A. O.
Nunes, Ângela
Lourenço, Lúcio
KeywordsSteel fibre reinforced self-compacting concrete
Flexural and shear reinforcement
Material nonlinear analysis
Post-cracking tensile behaviour
Issue date2012
PublisherUniversidade do Minho
Abstract(s)This paper describes the preliminary studies carried out in the scope of an applied research project for the design and construction of Steel Fibre Reinforced Self-Compacting Concrete (SFRSCC) grid foundations for single-family houses. Adopting a constitutive model for the simulation of the post-cracking behaviour of fibre reinforced concrete, and modelling a complete typical singlefamily house by taking into account the soil-structure interaction, it was estimated the post cracking residual tensile strength for the SFRSCC to be developed. The aimed SFRSCC was prepared in a concrete mix plant, and standard specimens, ½ scale beam prototypes and a ¼ scale grid prototype were cast. To take into account, in the design context, the fibre distribution and orientation that can occur in grid foundations, core samples were extracted from distinct locations and depths in these beams, and the stress-crack width relationship, σ-w, was experimentally assessed. Based on the obtained σ-w curves, and using a cross-section layer model, the flexural capacity of the grid foundation was evaluated. The obtained results show the suitability of SFRSCC for this type of structures.
TypeConference paper
AccessOpen access
Appears in Collections:ISISE - Comunicações a Conferências Internacionais

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