ASTM specification for glass-fiber reinforced polymer bars for concrete reinforcement

A major barrier to the acceptance of FRP composite materials in civil engineering is the lack of standard materials. Non-standard and proprietary materials must be qualified for short- and long-term performance, using test methods and meeting requirements that may also lack standardization. In North America, ASTM D30.10 - Composites for Civil Structures, develops test methods and material standards for FRP materials. This paper reports on the recently approved ASTM Standard for Solid Round Glass FRP Bars for Concrete Reinforcement. The standard covers requirements on constituent materials, bar geometry and testing for physical, mechanical and durability properties. The paper outlines the material specification, introduces the dependent test methods that support the specification, and discusses possible future standardization efforts for FRP bars in ASTM D30.