The Achilles heel in regular FRP structures (sandwiches) was always formed by "delamination", debonding of skin and core. This delamination problem occurs mainly after impact, followed by fatigue (with bridges for example an impact damage followed by passages with a wheel print). To solve this problem, the InfraCore ® technology has been developed. This is a technology with which delamination is not possible.
The above problem has been appointed by the Dutch government 15 years ago and prevented the use of regular sandwiches within the infrastructure. This while FRP as material is very suitable for construction purposes (strong, light and maintenance free).
In the beginning of this century, the InfraCore® technology has been developed to solve this problem. This is a technology in which the advantages of a sandwich construction (in particular stiffness) are combined with the impossibility of delamination.
After solving the delamination problem, the way was cleared for fiber-reinforced plastics to find their way in Infrastructure. In 2007 the InfraCore ® technology was successfully introduced with a 25 long cycle bridge in Dronten, The Netherlands.
After introduction, the technology has been validated in many ways and the sector has fully embraced FRP and its advantages (there are hundreds of bridges and lock gates realized). The Dutch Government by its Highway Agency (Rijkswaterstaat) is now even actively promoting FRP within the Dutch infra-sector and abroad.