ASTM D7958 / D7958M - 17

    Standard Test Method for Evaluation of Performance for FRP Composite Bonded to Concrete Substrate using Beam Test

    Active Standard ASTM D7958 / D7958M | Developed by Subcommittee: D30.10

    Book of Standards Volume: 15.03


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    Significance and Use

    5.1 This test method serves as a means for uniformly preparing and testing standard specimens suitable for being subject to environmental conditioning and subsequently used to evaluate FRP-bonded-to-concrete system performance, and evaluating and reporting the results.

    5.2 This test method is intended for use in the laboratory.

    5.3 The comparison of results from this test method conducted on identical specimens subject to different environmental conditioning protocols can be used to evaluate the effects of environmental exposure on the bond performance of FRP systems.

    1. Scope

    1.1 This test method describes the apparatus and procedure for evaluating the performance of wet lay-up or pultruded Fiber-Reinforced Polymer (FRP) composite systems adhesively bonded to a flat concrete substrate. The test determines the maximum force that an FRP system can bear before detaching from a concrete beam tested in flexure. Failure will occur along the weakest plane within the system composed of the FRP composite, adhesive, and concrete substrate.

    1.2 This test method is used for assessment and comparison of FRP systems subject to environmental conditioning. This test method is not intended for job approval or product qualification purposes.

    1.3 This test method is intended for use with adhesive-applied FRP systems and is appropriate for use with FRP systems having any fiber orientation or combination of ply orientations comprising the FRP composite, although the test condition only considers forces in the direction parallel to the beam longitudinal axis.

    1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.

    1.4.1 Within the text, the inch-pound units are shown in brackets.

    1.5 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.

    1.6 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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    C31/C31M Practice for Making and Curing Concrete Test Specimens in the Field

    C33/C33M Specification for Concrete Aggregates

    C39/C39M Test Method for Compressive Strength of Cylindrical Concrete Specimens

    C42/C42M Test Method for Obtaining and Testing Drilled Cores and Sawed Beams of Concrete

    C78 Test Method for Flexural Strength of Concrete (Using Simple Beam with Third-Point Loading)

    C125 Terminology Relating to Concrete and Concrete Aggregates

    C150/C150M Specification for Portland Cement

    C192/C192M Practice for Making and Curing Concrete Test Specimens in the Laboratory

    C511 Specification for Mixing Rooms, Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the Testing of Hydraulic Cements and Concretes

    C617 Practice for Capping Cylindrical Concrete Specimens

    D883 Terminology Relating to Plastics

    D3039 Test Method for Tensile Properties of Polymer Matrix Composite Materials

    D3878 Terminology for Composite Materials

    D7565 Test Method for Determining Tensile Properties of Fiber Reinforced Polymer Matrix Composites Used for Strengthening of Civil Structures

    E4 Practices for Force Verification of Testing Machines

    E6 Terminology Relating to Methods of Mechanical Testing

    E122 Practice for Calculating Sample Size to Estimate, With Specified Precision, the Average for a Characteristic of a Lot or Process

    E251 Test Methods for Performance Characteristics of Metallic Bonded Resistance Strain Gages

    E456 Terminology Relating to Quality and Statistics


    Referencing This Standard
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    DOI: 10.1520/D7958_D7958M-17

    Citation Format

    ASTM D7958 / D7958M-17, Standard Test Method for Evaluation of Performance for FRP Composite Bonded to Concrete Substrate using Beam Test, ASTM International, West Conshohocken, PA, 2017, www.astm.org

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