In 1973, FKK made its debut in the Construction industry by producing bridge bearings. The building sector represents a core market, particularly as far as rubber and plastic products are concerned. The objective for this market is to meet the substantial demands of customers. Below is a non-exhaustive list of products launched for this sector.
Fixed and sliding bearings made of natural, artificial rubber (neoprene); Rubber, polyurethane-tensioned and panel screens; Porous Vulkollan® bearings; Rubber and plastic seals for doors and windows
Elastomer bearings are rectangular prismatic or cylindrical parts made of vulcanized rubber. They contain steel sheets for reinforcement. They are mounted on bridge or viaduct abutments or building foundations and serve as a constructional component protecting bridges against heat, vibration and other similar adverse conditions as well as seismic and acoustic impacts.
Besides bridge and viaduct abutments, elastomeric bearings are also used for the seismic isolation of buildings. Elastomeric bearings are mounted in building foundations according to essential technical principles in an aim to protect the buildings against earthquakes and other forms of seismic events. Moments and loads formed during an earthquake or a seismic event are absorbed by the bearings so that any potential damage to the building is minimized. Seismic isolation procedures for the building may be performed during the construction progress. Moreover, this application is also useful for buildings with strategical, historical, cultural, military and chemical significance as well as buildings requiring conservation and older buildings. FKK also manufactures sound isolation bearings for TV and radio stations.
Bearings are classified in two groups according to the type of elastomer used in the construction: CHLOROPRENE rubber bearings (CR) and NATURAL rubber bearings (NR) are non-standard variants used in certain cases; and Ethylene-propylene rubber (EPDM) Butyl rubber bearings (U.R.) Chlorobutyl rubber bearings (C.I.I.R..).
One of the crucial advantages of elastomeric bearings is their simplicity. Thanks to seamless deformation of rubber under horizontal forces, a wide range of rubber parts are successfully in automotive, maritime, construction and many other induıstries. Rubber components also have a wide application range including the protection of buildings against damage induced by earth movements, seismic practices, pipeline systems and bridges.
Thanks to their compressible nature, elastomeric bearings have the capability of balancing both static and dynamic loads.
Due to their design, elastomeric bearings can move in all horizontal directions whereas mechanical bearings are deprived of such a constructional freedom.
In addition to the abovementioned advantages, elastomeric bearings also show a high compliant performance. The relatively high resistance of elastomer mixtures to aeging (for instance rubber such as neoprene)and maintenaince-free composition demanding no greasing, cleaning and painting are other sign of its compliance.