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ASTMD 7205 Standard Test Method for Tensile Properties of Fiber Reinforced Polymer Matrix Composite

ASTMD 7205 Standard Test Method for Tensile Properties of Fiber Reinforced Polymer Matrix Composite

Designation:D7205/D7205M–06

Standard Test Method for

Tensile Properties of Fiber Reinforced Polymer Matrix Composite Bars1

This standard is issued under the?xed designation D7205/D7205M;the number immediately following the designation indicates the year of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon(e)indicates an editorial change since the last revision or reapproval.

1.Scope

1.1This test method determines the quasi-static longitudinal tensile strength and elongation properties of?ber reinforced polymer matrix(FRP)composite bars commonly used as tensile elements in reinforced,prestressed,or post-tensioned concrete.

N OTE1—Additional procedures for determining tensile properties of polymer matrix composites may be found in test methods D3039/ D3039M and D3916.

1.2Linear elements used for reinforcing Portland cement concrete are referred to as bars,rebar,rods,or tendons, depending on the speci?c application.This test method is applicable to all such reinforcements within the limitations noted in the method.The test articles are referred to as bars in this test method.In general,bars have solid cross-sections and a regular pattern of surface undulations and/or a coating of bonded particles that promote mechanical interlock between the bar and concrete.The test method is also appropriate for use with linear segments cut from a grid.Speci?c details for preparing and testing of bars and grids are provided.In some cases,anchors may be necessary to prevent grip-induced damage to the ends of the bar or grid.Recommended details for the anchors are provided in Annex A1.

1.3The strength values provided by this method are short-term static strengths that do not account for sustained static or fatigue loading.Additional material characterization may be required,especially for bars that are to be used under high levels of sustained or repeated loading.

1.4This standard does not purport to address all of the safety problems,if any,associated with its use.It is the responsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.

1.5The values stated in either SI units or inch-pound units are to be regarded separately as standard.Within the text,the inch-pound units are shown in brackets.The values stated in each system are not exact equivalents;therefore,each system must be used independently of the http://www.sqlbou.tw/doc/076799630b4e767f5acfcea5.html bining values from the two systems may result in nonconformance with the standard.

2.Referenced Documents

2.1ASTM Standards:2

A615/A615M Speci?cation for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement

D792Test Methods for Density and Speci?c Gravity(Rela-tive Density)of Plastics by Displacement

D883Terminology Relating to Plastics

D3039/D3039M Test Method for Tensile Properties of Polymer Matrix Composite Materials

D3171Test Methods for Constituent Content of Composite Materials

D3878Terminology for Composite Materials

D3916Test Method for Tensile Properties of Pultruded Glass-Fiber-Reinforced Plastic Rod

D5229/D5229M Test Method for Moisture Absorption Properties and Equilibrium Conditioning of Polymer Ma-trix Composite Materials

E4Practices for Force Veri?cation of Testing Machines E6Terminology Relating to Methods of Mechanical Test-ing

E83Practice for Veri?cation and Classi?cation of Exten-someter System

E122Practice for Calculating Sample Size to Estimate, With a Speci?ed Tolerable Error,the Average for a Characteristic of a Lot or Process

E456Terminology Relating to Quality and Statistics

E1012Practice for Veri?cation of Test Frame and Speci-men Alignment Under Tensile and Compressive Axial Force Application

E1309Guide for Identi?cation of Fiber-Reinforced Polymer-Matrix Composite Materials in Databases

E1434Guide for Recording Mechanical Test Data of Fiber-Reinforced Composite Materials in Databases

E1471Guide for Identi?cation of Fibers,Fillers,and Core

1This test method is under the jurisidiction of ASTM Committee D30on Composite Materials and is the direct responsibility of Subcommittee D30.05on Structural Test Methods.

Current edition approved March15,2006.Published April2006.

2For referenced ASTM standards,visit the ASTM website,http://www.sqlbou.tw/doc/076799630b4e767f5acfcea5.html ,or contact ASTM Customer Service at [email protected]://www.sqlbou.tw/doc/076799630b4e767f5acfcea5.html .For Annual Book of ASTM Standards volume information,refer to the standard’s Document Summary page on the ASTM website.

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Copyright by ASTM Int'l (all rights reserved); Thu Sep 7 12:49:06 EDT 2006

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