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<p>Composite beam-and-block floor systems are widely used in residential and public buildings, yet their design is still governed by conservative assumptions that neglect the composite action between ceramic infill blocks and structural concrete. This study presents full-scale laboratory tests on four composite ribbed floor models with varying block–concrete interaction and with or without transverse ties. The results show that composite action significantly improves structural performance. In particular, the presence of both block–concrete cooperation and transverse ties increased the bending capacity by approximately 20% and extended the linear range of moment–deflection and strain relationships by about 15% compared to non-composite models. Moreover, the stabilization of the neutral axis at the block–concrete interface confirmed the beneficial effect of composite action on stiffness. These findings highlight hidden reserves in both ultimate and serviceability limit states and provide experimental evidence that challenges current design simplifications. Incorporating composite action into design practice could lead to more economical and reliable slab solutions, with transverse ties playing a crucial role in ensuring structural efficiency.</p>

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Experimental study of ceramic–concrete interaction in composite beam-and-block floor systems

  • 期刊论文

  • 发表日期：

    2026年2月26日

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  • Artur Piekarczuk,
  • Przemysław Więch,
  • Jarosław Szulc,
  • Aleksandra Mazurek,
  • Jacek Głodkiewicz,
  • Instytut Techniki Budowlanej

摘要

Composite beam-and-block floor systems are widely used in residential and public buildings, yet their design is still governed by conservative assumptions that neglect the composite action between ceramic infill blocks and structural concrete. This study presents full-scale laboratory tests on four composite ribbed floor models with varying block–concrete interaction and with or without transverse ties. The results show that composite action significantly improves structural performance. In particular, the presence of both block–concrete cooperation and transverse ties increased the bending capacity by approximately 20% and extended the linear range of moment–deflection and strain relationships by about 15% compared to non-composite models. Moreover, the stabilization of the neutral axis at the block–concrete interface confirmed the beneficial effect of composite action on stiffness. These findings highlight hidden reserves in both ultimate and serviceability limit states and provide experimental evidence that challenges current design simplifications. Incorporating composite action into design practice could lead to more economical and reliable slab solutions, with transverse ties playing a crucial role in ensuring structural efficiency.