ASTM A1081/A1081M - 21

Standard Test Method for Evaluating Bond of Seven-Wire Steel Prestressing Strand

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1.1 This test method describes procedures for determining the bond of seven-wire steel prestressing strand. The bond determined by this test method is stated as the tensile force required to pull the strand through the cured mortar in a cylindrical steel casing. The result of the test is the tensile force measured on the loaded-end of the strand corresponding to a movement of 0.1 in. [2.5 mm] at the free-end of the strand.1.2 This test method is applicable either in inch-pound units (as Test Method A1081) or SI units (as Test Method A1081M).1.3 The values stated in either inch-pound units or in SI units are to be regarded separately as standard. Within the text, SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the test method.1.4 This standard does not purport to address all of the safety concerns, if an

Antal sider: 5

Internationale relationer :

ICS: 77.140.65 - Stålwire, ståltov og stålkæder

Varenummer: A006025