Main image: The refurbishment process was completed with the application of Sika® Antisol® E acting as a curing membrane to the surface of the concrete, to reduce water loss and prevent shrinkage.
Mediterranean Shipping Company, better known as MSC, required berth repairs to its new docking site situated next to the new passenger terminal in the Durban harbour.
Since the scope of the project involved removing and replacing 42 bollards, and thereafter to remove and replace 21 fenders, several specialists were engaged. The primary specialist was Engineering Projects and Naval Architecture, who designed and planned the project. The specialist work was done by the main contractors, Stefanutti Stocks Coastal, together with the subcontractors, Structural Maintenance and Holmes Cutting and Coring. The project and quality managers were sourced from Turner and Townsend.
Once the installation of the bollards was complete, Stefanutti Stocks Coastal rehabilitated the existing concrete around the bollards. This was done using SikaGrout®-212 and a joint sealant system comprising of Sika® Primer-3N and Sikaflex® PRO-3 i. These construction joints required a joint sealant system to seal all recesses and cavities. The use of these products created a neat, uniform look around each bollard and allowed for movement between the old and new substrates.
Thereafter the so-called “dead-man anchor block” needed to be rebuilt 20m inside of the main key wall, and here a surface retarder, Sika® Rugasol®-2 Liquid, was used to prevent the concrete from setting. To ensure that the berth wall was structurally sound, three new anchoring rods were installed between the dead-man’s anchor and the bollards.
Despite the unique conditions, and unexpected challenges of this project, Sika’s specialised products ensured success.