Researcher discusses fallout of epoxy-coated-rebar case

Article Abstract:

The court vindicated Engr Kenneth Clear of charges filed against him by the Concrete Reinforcing Steel Institute (CRSI). Clear had revised his opinion on the effectiveness of epoxy-coated rebar in a report submitted to CRSI but the latter claimed that Clear did not perform someof the tests for the research. Clear maintains that epoxy-coated rebars do not guarantee long-term protection and that this can be achieved through combination systems. Clear criticized companies that sue researchers when findings do not suit the company's goals and stressed the need for standards for expert witnesses.

Evaluation, Cases, Engineers, Epoxy coatings, Clear, Kenneth

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Glass rebar's growing pains

Article Abstract:

The search for noncorrosive rebars has turned the attention of civil engineers to consider glass fiber-reinforced polymer (GFRP). GFRP is a well-accepted material already in use in Japan and Europe. The lack of guidelines for using GFRP has delayed the utilization of the material in the US. It exhibits high tensile strength, very high fatigue resistance and magnetic transparency. These attributes make them ideal rebar materials for reinforced concrete structures.

All Other Plastics Product Manufacturing, Fabricated Structural Metal Manufacturing, Miscellaneous metal work, Reinforced Plastics NEC, Fabricated Reinforcing Bars, Plastics industry, Maintenance and repair, Reinforced plastics, Reinforced concrete, Fiber, Fiber reinforced concrete, Corrosion resistant materials

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Composites becoming viable rebar alternative

Article Abstract:

Engineering firms have started using composites as reinforcing bars. The technology has been used by the aerospace industry for years but it is a new development in the civil engineering sector. The advantages of using composites include its weight, which is only one-fourth of steel, its tensile strength, its resistance to corrosion and its thermal expansion rates. Its first application as rebar was at the Kennedy Mansion, West Palm Beach, FL, in 1996.

Engineering services, Engineering firms, Composite materials

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