100-Year Working Life for Post-Installed Chemical Fastenings

There is a global initiative to significantly improve the safety and sustainability of new or existing structures. This initiative covers different phases of the ‘design to construction timeline’ of a project.

The said drive resulted in the introduction of new design concepts, construction materials, enhanced value engineering, construction methods and standards. The infrastructure sector is one of the primary beneficiaries of such developments, which influenced post-installed chemical fasteners to undergo assessment improvements to meet such requirement.

Europe is at the forefront of assessing the performance of chemical fasteners for 100-year working life as made evident when EAD-330499-01-0601, a European Assessment Document (EAD) for chemical fasteners, was officially released. This 115-page EAD is a comprehensive document intricately detailing the scope, structure and procedure for assessing chemical fasteners-now including 100-year working life in the “Durability” tests. Since the performance of post-installed chemical fasteners is primarily dependent on their bond strengths, additional assessments as given below are linked to bond strength.

50-year working life	100-year working life
100,000 load cycles	200,000 load cycles
1,000 crack width cycling under load	2,000 crack width cycling under load
3-month sustained load test	6-month sustained load test

Wurth Chemical Fasteners with valid 100-year working life assessments

In Australia, most infrastructure projects require post-installed chemical fastener products to have valid assessments for 100-year working life, and Wurth carries two chemical fastener products that meet such requirement. Click on the product links below to download their assessment documents (European Technical Assessment).