The environmental damage caused by improper management of waste tires increased over the past years creating a relevant problem to be solved. In the field of civil engineering results possible to re-utilize the steel fiber and the rubber of the waste tires. In particular the concrete obtained by adding recycled steel fibers shows a good mechanical improvement of the brittle matrix, as a consequence it appears to be a promising candidate for both structural and non-structural applications. In the present experimental work, as a continuation of the research already performed in this field by the authors, the post-cracking performances of RFRC (Recycled Fiber Reinforced Concrete) were evaluated by means tests on flexural elements and slabs. The effectiveness of the recycled fibers was evaluated in comparison with the experimental data obtained for specimens realized with IFRC (Industrial Fiber Reinforced Concrete). All fresh and hardened proprieties of concrete mixes were experimentally estimated. The post-cracking behavior of the RSFRC, obtained by flexural tests, was comparable with that of ISFRC. RSFRC specimens showed good energy absorption and good residual strength after cracking. However, technological issues related to fibers production and concrete mixes preparation, must be still investigated and a wider research is still required to validate the interesting founds.

Steel fibers from waste tires as reinforcement in concrete: A mechanical characterization

CENTONZE, GIUSEPPE;LEONE, Marianovella;AIELLO, Maria Antonietta
2012-01-01

Abstract

The environmental damage caused by improper management of waste tires increased over the past years creating a relevant problem to be solved. In the field of civil engineering results possible to re-utilize the steel fiber and the rubber of the waste tires. In particular the concrete obtained by adding recycled steel fibers shows a good mechanical improvement of the brittle matrix, as a consequence it appears to be a promising candidate for both structural and non-structural applications. In the present experimental work, as a continuation of the research already performed in this field by the authors, the post-cracking performances of RFRC (Recycled Fiber Reinforced Concrete) were evaluated by means tests on flexural elements and slabs. The effectiveness of the recycled fibers was evaluated in comparison with the experimental data obtained for specimens realized with IFRC (Industrial Fiber Reinforced Concrete). All fresh and hardened proprieties of concrete mixes were experimentally estimated. The post-cracking behavior of the RSFRC, obtained by flexural tests, was comparable with that of ISFRC. RSFRC specimens showed good energy absorption and good residual strength after cracking. However, technological issues related to fibers production and concrete mixes preparation, must be still investigated and a wider research is still required to validate the interesting founds.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11587/365808
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 169
  • ???jsp.display-item.citation.isi??? 138
social impact