DYWIDAG Corrosion Protection System DYNA Protect®
The corrosion protection tapes DYNA Protect®-B and DYNA Protect®-C are wrapped helically onto the surface of the installed tension members.
The optimal working method for this procedure can be chosen according to local conditions.
Preparation of the cable surface
The surface of the tension member that is to be protected by the corrosion protection system DYNA Protect® must be dry and free of loose parts. The corrosion protection tape DYNA Protect®-B can then be applied directly to the blank, galvanized or coated steel.
In general, it is sufficient to clean the surface by rotating brushes which are driven along the tension member, e.g. by means of a special transport unit. In order to increase the adhesion of the corrosion protective tape at both ends of the protection area, the butyl rubber based DYNA Protect®-P primer may be painted onto the surface of the tension member. No additional measures are required for intermediate length.
The tapes are applied by a hand operated wrapping device which is led around the tension member. This method is suitable for smaller objects if the access to the wrapping area is possible. It can also be used for repair purposes.
The tapes are applied by an automatic wrapping device especially developed for this application. This device drives the tension member up automatically. Thus, no putting up of scaffoldings in the area to be wrapped or any further equipment, such as working platforms or lifts are required.
Special provisions, such as protection against vandalism in the superstructure area, can be offered according to local conditions and requirements.
Stainless steel sheathings are suitable for the corrosion protective wrapping above the superstructure.
Tests and Supervision
The corrosion protection system DYNA Protect® was checked for its corrosion protection properties and its long-term durability in extensive tests at the material testing institute of the University of Stuttgart. For all relevant sectors, it complied with or even exceeded the requested values of the TL/TP-KOR-cables/ RKS-cables bulletin. Excellent results were achieved for factors such as condensation resistance or the evaluation of permeability to water vapor.
Even at the impact of salty mist, no corrosion was found beneath the wrapped tapes. Artificial weathering with irradiation by xenon lamps and ultraviolet rays showed no change whatsoever at the polyethylene surface. Thus, the durability of material and colour was proved.
Corrosion protection tapes are subject to an external supervision by the certification authority DVGW.
Please note: This webpage serves basic information purposes only. Technical data and information provided herein shall be considered non-binding and may be subject to change without notice. We do not assume any liability for losses or damages attributed to the use of this technical data and any improper use of our products. Should you require further information on particular products, please do not hesitate to contact us.