GFRP hollow-core bars as reinforcement of concrete beams

Guillermo Claure, Francisco De Caso y Basalo, Antonio Nanni

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations


The use of glass-fiber-reinforced-polymer (GFRP) composites as internal reinforcement (re-bars) for concrete structures has proven to be an alternative to traditional steel reinforcement due to significant advantages such as magnetic transparency and, most importantly, corrosion resistance equating to durability advantages and structural life extension. The number of projects in recent years using GFRP re-bars has increased dramatically. Typically, the GFRP re-bars are similar to the steel counterparts having external deformations to bond to concrete, as well as solid circular cross-section. Circular GFRP re-bars with a hollow-core have also become available. They offer the advantage of increasing the effective cross-sectional area that is engaged to carry load since fibers at the center of a solid cross-section are not due to shear lag. Additionally, they offer a larger surface area for improved bond. This paper presents an evaluation of the structural behavior of GFRP hollow-core bar reinforced concrete beams that showed to be comparable to members reinforced with solid GFRP bars. Also, design guidelines as per ACI 440.1R are shown to be applicable to GFRP hollow-core bar reinforcement.

Original languageEnglish (US)
Title of host publicationCAMX 2014 - Composites and Advanced Materials Expo: Combined Strength. Unsurpassed Innovation.
PublisherThe Composites and Advanced Materials Expo (CAMX)
StatePublished - 2014
EventComposites and Advanced Materials Expo: Combined Strength. Unsurpassed Innovation., CAMX 2014 - Orlando, United States
Duration: Oct 13 2014Oct 16 2014


OtherComposites and Advanced Materials Expo: Combined Strength. Unsurpassed Innovation., CAMX 2014
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Mechanics of Materials
  • Renewable Energy, Sustainability and the Environment
  • Aerospace Engineering
  • Materials Science(all)


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