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An Investigation on FRP-Stay-in-Place Concrete Composite System for Sustainable Construction

An Investigation on FRP-Stay-in-Place Concrete Composite System for Sustainable Construction In fiber-reinforced polymer-stay-in-place (FRP-SIP) system, the FRP is structurally integrated with concrete to use as a permanent formwork that also provides tensile reinforcement to the member. The present work investigated, experimentally and numerically, the complex behavior of FRP-SIP composite system with a commercially available pultruded glass FRP section as permanent formwork. Beam and slab specimens were prepared in the laboratory with the glass FRP as permanent formwork. Flexure tests were carried out in order to understand the influence of FRP as a stay-in-place member on the load–displacement response and failure modes of the system. It was observed that the beams under flexural loading had improved flexural capacity due to FRP-SIP and failed predominantly in shear mode. Along with shear failure, delamination of the FRP was also observed in some cases. The results revealed that FRP-SIP system was capable of providing adequate flexural reinforcements to the concrete structural members and thus showed the ability of replacing steel reinforcements. A three-dimensional finite element (FE) model was developed for the FRP-SIP concrete, which was capable of capturing the multifaceted behavior of the composite system. The FE model was validated with the experimental results of the present work and also with that obtained from the literature. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of The Institution of Engineers (India): Series A Springer Journals

An Investigation on FRP-Stay-in-Place Concrete Composite System for Sustainable Construction

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Publisher
Springer Journals
Copyright
Copyright © The Institution of Engineers (India) 2021
ISSN
2250-2149
eISSN
2250-2157
DOI
10.1007/s40030-021-00510-7
Publisher site
See Article on Publisher Site

Abstract

In fiber-reinforced polymer-stay-in-place (FRP-SIP) system, the FRP is structurally integrated with concrete to use as a permanent formwork that also provides tensile reinforcement to the member. The present work investigated, experimentally and numerically, the complex behavior of FRP-SIP composite system with a commercially available pultruded glass FRP section as permanent formwork. Beam and slab specimens were prepared in the laboratory with the glass FRP as permanent formwork. Flexure tests were carried out in order to understand the influence of FRP as a stay-in-place member on the load–displacement response and failure modes of the system. It was observed that the beams under flexural loading had improved flexural capacity due to FRP-SIP and failed predominantly in shear mode. Along with shear failure, delamination of the FRP was also observed in some cases. The results revealed that FRP-SIP system was capable of providing adequate flexural reinforcements to the concrete structural members and thus showed the ability of replacing steel reinforcements. A three-dimensional finite element (FE) model was developed for the FRP-SIP concrete, which was capable of capturing the multifaceted behavior of the composite system. The FE model was validated with the experimental results of the present work and also with that obtained from the literature.

Journal

Journal of The Institution of Engineers (India): Series ASpringer Journals

Published: Jan 30, 2021

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