An "injected" HR bolt is designed from a standard HR bolt on which modifications have been made. Bolts and washers are machined to allow resin injection into the spaces between the bolt and the hole walls of the assembled parts. After complete polymerization, the resin can transmit forces, between parts and bolts, by bearing resistance.
Design rules to be applied are given by the standard NF EN 1993-1-8. Execution rules are specified in the appendix of the standard NF EN 1090-2.
BOLT AFTER TIGHTENNING AND INJECTION
IMPLEMENTATION
Before injection of the resin, all bolts must be installed and tightened permanently according to their usual rules.
The injection of the resin is carried out via a nozzle positioned on the orifice of the hole located on the top of the head of the bolt. The injection must be conducted until the resin appears at the outer edge of the groove on the washer on the nut side.
TECHNICAL SUPPORT
For any hexagon Injection bolt project, SOFAST Technologie manufactures on request the dimensions that you need. The teams of SOFAST Technologie remain at your disposal to provide you with the necessary technical support.