Resumo

MARQUEZ-DOMINGUEZ, Sergio et al. Soft Pre-stressed PET profiles as reinforcing fibers in structural elements made of concrete. Dyna rev.fac.nac.minas [online]. 2018, vol.85, n.206, pp.162-170. ISSN 0012-7353.  https://doi.org/10.15446/dyna.v85n206.71805.

The inclusion of pre-stressed PET profiles as reinforcing fibers in structural elements is proposed. The PET-profiles are placed in a unidirectional and bidirectional fiber matrix with soft pre-tensioned condition that they could have advantages in structural members made of concrete in some precise applications, for instance, road safety barriers. A universal machine (WDW-200E) is used to test PET-profiles with different width, knots and even other conditions. The desired PET profile is chosen and the concrete mixture is designed under the ACI standard guidance. Pre-stressed PET-profiles are included in wood molds shaped in beam-type and subsequently flexural strength is estimated. Furthermore, experimental tests results are presented for PET-profiles as structural reinforcement of beams made of concrete under pure flexural. Finally, a probabilistic model is used to estimate the PET contribution in terms of exceedance of the rupture modulus.

Palavras-chave : PET profiles; fiber matrix; beams-type; concrete; Pre-stress; PET fibers; probabilistic model.

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