Structural/constructional element for floor systems

A structural element, comprising:

• a base portion (1) and a connecting central pin (2), characterized by, the base portion (1) being hollow and having a lengthwise extending interior defined by a lower wall, a juxtaposed upper wall and a pair of side walls, the interior having a rectangular cross-section and having an internal reinforcement defined by a zig zag shaped ribbing (18) that zig zags from side to side between the side walls in the interior of the base portion, and a connecting chamber (10) having a circular shape which provides connectivity between the base portion and the connecting central pin (2) so that a cross-section of the pin (2) corresponds to the circular shape of the chamber (10) between the internal reinforcement, an upper surface (3) of the structural element is provided with longitudinal grooves (4) with a depth of up to 2 mm and width up to 5 mm, and is composed of one or more of a modified polymer, elastomeric material based on rubber mixtures, of which foundation is monomer ethylene-propylene-diene or natural rubber or styrene-butadiene rubber, a combination of the natural rubber/styrene-butadiene rubber, further based thermoplastic elastomers, whose base is monomer ethylene-propylene-diene or polypropylene/monomer ethylene-propylene-diene or polyvinylchloride, or further based thermoplastic vulcanizates, whose base is monomer ethylene-propylene-diene and polyethylene or natural or synthetic rubber, modified by polyethylene or polypropylene, wherein India rubber mixtures based on monomer ethylene-propylene-diene consist of 20 to 50% vol. monomer ethylene-propylene-diene, 0.5 to 2% vol. vulcanizing agent, 20 to 50% vol. fillers and 20 to 50% softeners;
• rubber mixtures based on natural rubber consist of 20 to 50% vol. styrene-butadiene rubber, 0.5 to 50% vol. fillers, 20 to 50% vol. softeners, 0.5 to 2% vulcanizing agent, up to 1% vol. of stearin and up to 2% vol. of antioxidants, up to 2% vol. of accelerators;
• rubber mixtures based on styrene-butadiene rubber consist of 20 to 50% vol. styrene-butadiene rubber, 0.5 to 2% vol. vulcanizing agent, 20 to 50% vol. fillers and 20 to 50% vol. softeners;
• rubber mixtures based on natural rubber/styrene-butadiene rubber consist of 20 to 50% vol. mixtures of natural rubber and styrene-butadiene rubber, 0.5 to 2% vol. vulcanizing agent, 20 to 50% vol. fillers and 20 to 50% vol. softeners;
• thermoplastic elastomers based on monomer ethylene-propylene-diene;
• thermoplastic elastomers based on the mixture of polypropylene/monomer ethylene-propylene-diene;
• thermoplastic elastomers based on polyvinylchloride;
• and thermoplastic vulcanizates based on monomer ethylene-propylene-diene.