| 英文摘要 |
This paper reports on testing of twenty beam-end specimens (ASTM A944) for bond behaviors between deformed reinforcements and concrete. Three grades of deformed reinforcements with yield stresses of 420, 550, and 690 MPa and five types of concrete with compressive strengths of 28, 49, 70, 85, and 100 MPa were used. This study was designed to investigate the influence of steel grade on the development length in tension stipulated in the American Concrete Institute (ACI) 318-19 Code. Fifteen of the twenty specimens underwent the concrete splitting anticipated in the ACI 318 code. The results demonstrated that the modification factor for steel grade using the development length in tension specified in the ACI 318-19 Code need not be considered；the ACI 318-14 Code provides sufficiently conservative results. |
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