Development of fast curing bridge waterproofing systems.


Perform a fast waterproofing and the resurfacing of the drive way of a bridge, and enable a shorter timespan for the construction works, thus saving costs, traffic jams, and additional traffic management.


  • Sika Germany GmbH developed the innovative Sika HANV Rapid and Sika FLK Rapid systems which guarantee a very fast application of only 36 hours. HANV is an abbreviation that stands for the use of an open-pored-asphalt with subsequent saturation and sealing by an epoxy resin.
  • To show the customer benefits from using this quick solution from Sika for bridge waterproofing, the carbon footprint of the system was determined and compared to the benchmark solution. The results opposed to the CO2 emissions resulting from the traffic diversion. The economic costs from the systems and the traffic diversion were also evaluated.


Using Sika’s fast curing bridge repair systems, a bridge can be refurbished within one single weekend (three days) – with traditional systems a repair took three weeks. This short time span reduces the length of traffic diversions and prevents the environment from lots of CO2 emissions and noise.

Regarding the new, innovative systems it becomes clear that they have an obviously smaller carbon footprint than traditional systems. Together with the short construction time the systems provide a sustainable solution for the refurbishment of bridges.

The fast curing Sika HANV Rapid bridge waterproofing system brings several benefits:

  • The total carbon costs of the benchmark system already surpass those from the Sika HANV Rapid system after 2 days.
  • Compared to the benchmark scenario, the total economic costs from the Sika HANV Rapid system are compensated after 7 days.
  • Very short construction works duration.
  • Less dependency on the weather conditions.
  • Reduction of emissions, as well as noise.
  • Reduction of accident risks through increased shear and tensile bond.
  • Reduced long term maintenance due to increased bond.
Total Carbon Costs (System and Traffic Redirection)
Total Carbon Costs (System and Traffic Redirection)
Total Costs (System and Traffic Redirection)
Total Costs (System and Traffic Redirection)