Close the gap - A durability study of epoxy-basalt fiber composite rebar for concrete reinforcement

Yi Ling Ivan Liang, Huifeng Qian, Francisco De Caso, Antonio Nanni

Research output: Contribution to conferencePaperpeer-review

Abstract

Nonconventional rebar made by fiber-reinforced polymer (FRP) composite has been available to the industry for many years, mainly due to its unique value propositions, including: (a) high mechanical performance to weight ratio, and (b) corrosion free nature in those constructions exposed to harsh environments. Unfortunately, even nowadays, engineers have to adopt relative excessive safety factors when using FRP reinforcement because of the lack of durability-performance information. To address this need, this study presents laboratory results conducted at a Florida Department of Transportation approved testing facility. The tested bars were pultruded using epoxy-anhydride thermoset and basalt fibers. The durability performance was evaluated after an accelerated environmental treatment that involves a 90-day immersion in alkaline solution at 60 °C. Details, including testing method, specification, and promising outcomes are discussed in this paper.

Original languageEnglish (US)
StatePublished - 2020
Externally publishedYes
Event7th Composites and Advanced Materials Expo, CAMX 2020 - Virtual, Online
Duration: Sep 21 2020Sep 24 2020

Conference

Conference7th Composites and Advanced Materials Expo, CAMX 2020
CityVirtual, Online
Period9/21/209/24/20

Keywords

  • Basalt fibers
  • Composites
  • Concrete
  • Durability
  • Rebar

ASJC Scopus subject areas

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

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