Title:
Tensile Strength of Welded Splices of QST Reinforcing Bars
Author(s):
Vitaliy V. Degtyarev
Publication:
Materials Journal
Volume:
104
Issue:
1
Appears on pages(s):
95-102
Keywords:
reinforcement; steel; tensile strength
DOI:
10.14359/18500
Date:
1/1/2007
Abstract:
An analysis of test data on tensile strength of Grade 500 (characteristic yield strength fy = 500 N/mm2 [73 ksi]) quench and self tempered (QST) bars welded by six different welding processes is presented. Equations for calculating tensile strength of the welded QST bars are developed. The equations are based on a nonlinear regression analysis of the test data and reflect the effect of carbon equivalent (CE) value of steel, bar diameter, and tensile strength of the bar before welding on the strength of the welded bars. It was shown that a minimum CE value is necessary to provide a required tensile strength of the welded QST bars. The minimum CE values were determined based on the developed equations for the bars with diameters from 8 to 40 mm [0.31 to 1.57 in.].