<b>Flat slabs strengthened to punching with carbon fiber reinforced polymer (CFRP) dowels

Authors

  • Helder Luiz da Silva Rodrigues Universidade Federal do Pará
  • Priscila Moreira da Silva Universidade Federal do Pará
  • Dênio Ramam Carvalho de Oliveira Universidade Federal do Pará

DOI:

https://doi.org/10.4025/actascitechnol.v37i4.27116

Keywords:

flat slab, structural strengthening, punching, CFRP.

Abstract

This paper presents results of punching tests carried out in four reinforced concrete flat slabs, one of them without shear reinforcement and others strengthened with CFRP dowels. Slabs were 1000 mm square meters and 60 mm thick and were subjected to mid span loadings until failure. The strengthening arrangements were radial and cruciform, varying the number of layers of CFRP dowels. The results presented include vertical displacements, strain on steel and concrete, ultimate loads and failure mode, as well as estimation of resistance based on the Brazilian standards. It was observed significant improvement on punching resistance of the strengthened slabs when compared to the reference slab, highlighting the good performance for the strengthening system evaluated.

 

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Author Biography

Dênio Ramam Carvalho de Oliveira, Universidade Federal do Pará

Professor Associado da UFPA e Permanente do curso de mestrado e doutorado em engenharia civil da UFPA. Pesquisador de produtividade  do CNPq e  consultor da CAPES para avaliações de cursos de pós-graduação. Atua na área de estruturas de concreto nas ênfases de cisalhamento, torção e reforço estrutural, além do desenvolvimento de novos materiais e técnicas construtivas inovadores.

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Published

2015-10-01

How to Cite

Rodrigues, H. L. da S., Silva, P. M. da, & Oliveira, D. R. C. de. (2015). <b>Flat slabs strengthened to punching with carbon fiber reinforced polymer (CFRP) dowels. Acta Scientiarum. Technology, 37(4), 323–330. https://doi.org/10.4025/actascitechnol.v37i4.27116

Issue

Vol. 37 No. 4 (2015)

Section

Civil Engineering

License

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