Bronze-Brazed Joints for Sealing Rebar Penetrations of Electromagnetic Pulse Shields.
Final rept. Aug-Dec 71,
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS
Pagination or Media Count:
The objective of the study was to determine whether bronze brazing could be used to seal steel reinforcing bar penetrations through the electromagnetic pulse EMP shields of Perimeter Acquisition Radar Buildings PARB when such seal joints are required to withstand design loads without degradation of the EMP shielding properties or of the mechanical properties of the reinforcing bars. Initially, five tests were performed on three concrete-encased bars that represented full-scale penetrations of reinforcing bars No. 11, Grade 75 through 14-inch-thick steel plates that represented the EMP shield. After completion of each test, the concrete was removed from the brazed joint, and dye penetrant was used to examine the joint for cracking. Author
- Couplers, Fasteners and Joints