ASTM D7957/D7957M-22
Standard Specification for Solid Round Glass Fiber Reinforced Polymer Bars for Concrete Reinforcement

Standard No.

ASTM D7957/D7957M-22

Release Date

2022

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D7957/D7957M-22

Scope

1.1 This specification covers glass fiber reinforced polymer (GFRP) bars, provided in cut lengths and bent shapes and having an external surface enhancement for concrete reinforcement. Bars covered by this specification shall meet the requirements for geometric, material, mechanical, and physical properties described herein. 1.2 Bars produced according to this standard are qualified using the test methods and must meet the requirements given by Table 1. Quality control and certification of production lots of bars are completed using the test methods and must meet the requirements given in Table 2. 1.3 The text of this specification references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables) shall not be considered as requirements of the specification. 1.4 The following FRP materials are not covered by this specification: 1.4.1 Bars made of more than one load-bearing fiber type (that is, hybrid FRP). 1.4.2 Bars having no external surface enhancement (that is, plain or smooth bars, or dowels). 1.4.3 Bars with geometries other than solid, round cross sections. 1.4.4 Pre-manufactured grids and gratings made with FRP materials. 1.5 This specification is applicable for either SI (as Specification D7957M) or inch-pound units (as Specification D7957). 1.6 Units—The values stated in either SI units or inchpound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM D7957/D7957M-22 Referenced Document

• ASTM A615/A615M Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement*， 2022-07-01 Update
• ASTM C904 Standard Terminology Relating to Chemical-Resistant Nonmetallic Materials
• ASTM D2584 Standard Test Method for Ignition Loss of Cured Reinforced Resins
• ASTM D3171 Standard Test Methods for Constituent Content of Composite Materials
• ASTM D3878 Standard Terminology Composite Materials
• ASTM D570 Standard Test Method for Water Absorption of Plastics
• ASTM D7205/D7205M Standard Test Method for Tensile Properties of Fiber Reinforced Polymer Matrix Composite Bars
• ASTM D7617/D7617M Standard Test Method for Transverse Shear Strength of Fiber-reinforced Polymer Matrix Composite Bars*， 2024-04-21 Update
• ASTM D7705/D7705M Standard Test Method for Alkali Resistance of Fiber Reinforced Polymer (FRP) Matrix Composite Bars used in Concrete Construction
• ASTM D7913/D7913M Standard Test Method for Bond Strength of Fiber-Reinforced Polymer Matrix Composite Bars to Concrete by Pullout Testing
• ASTM D7914/D7914M Standard Test Method for Strength of Fiber Reinforced Polymer (FRP) Bent Bars in Bend Locations
• ASTM D792 Standard Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement
• ASTM E1356 Standard Test Method for Assignment of the Glass Transition Temperatures by Differential Scanning Calorimetry or Differential Thermal Analysis
• ASTM E2160 Standard Test Method for Heat of Reaction of Thermally Reactive Materials by Differential Scanning Calorimetry*， 2023-11-01 Update

ASTM D7957/D7957M-22 history

• 2022 ASTM D7957/D7957M-22 Standard Specification for Solid Round Glass Fiber Reinforced Polymer Bars for Concrete Reinforcement
• 2017 ASTM D7957/D7957M-17 Standard Specification for Solid Round Glass Fiber Reinforced Polymer Bars for Concrete Reinforcement