Aktivní norma | Vydána: 01.09.2023

ASTM A981/A981M-23

Standard Test Method for Evaluating Bond Strength for 0.600-in. [15.24-mm] Diameter Seven-Wire Steel Strand, Grade 270 [1860], Used in Prestressed Ground Anchors

Dostupné jazyky: Anglicky

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Podrobné informace

Označení: ASTM A981/A981M-23

Datum vydání: 01.09.2023

Stran: 4

Země: Americká technická norma

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Anotace

This test method deals with the standard procedures for establishing the relative bond strength of Grade 270 prestressing steel strands of specified diameter in cement grout as used in prestressed ground anchors for evaluating the effects of manufacturing practices on bond strength. The bond strength values obtained shall not be used to design the bond strength of ground anchors that depend on field conditions. This test method is not intended to be used as a bond test for pretensioned concrete applications. The test specimen shall be cut from standard production coils and shall not be wiped or cleaned. Pull test shall be made in accordance with the method.

Keywords:
bond strength test, prestressed ground anchors, seven-wire strand (tendon) ,, ICS Number Code 77.140.65 (Steel wire, wire ropes and link chains)

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