Description

PC strands are becoming widely acceptable as a roof support system in underground mining applications for their superior strength and flexibility. Laboratory testing was completed to evaluate the tensile and shear strength of individual wires and completely wound PC-strand cables. Both smooth wires and the recent anchorage enhancement innovation of indentation were evaluated and compared. The results demonstrate that the difference between smooth and indented wires is statistically insignificant, and that indentation does not adversely affect strand properties and performance.