LONG-TERM BEHAVIOUR OF EPOXY RESINS IN CONCRETE CONSTRUCTION

LANGZEITVERHALTEN VON EPOXIDHARZEN IM BETONBAU

THE RESEARCH PROJECT IS BEING CARRIED OUT JOINTLY WITH THE INSTITUTE OF CONSTRUCTION RESEARCH IN AACHEN, AND IS CONCERNED WITH THE CONTINUANCE OF SYSTEMATIC STUDIES OF THE LONG-TERM BEHAVIOUR OF EPOXY RESIN ADHESIVE MORTARS FOR CONCRETE, AND STRUCTURAL SYNTHETIC EPOXY RESIN MORTARS AND CONCRETE. PRELIMINARY TESTS ARE BEING FINANCED BY THE GERMAN CONCRETE ASSOCIATION. THE STUDIES ARE BEING UNDERTAKEN WITH A RESIN OF KNOWN MIX DESIGN WHICH CAN BE SUPPLIED BY VARIOUS MANUFACTURERS. THIS MEANS THAT THE APPLICABILITY OF THE RESULTS OF THE TESTS IS INDEPENDENT OF SPECIAL MANUFACTURING METHODS. LONG-TERM FATIGUE TESTS LASTING UP TO 16 YEARS ARE BEING CARRIED OUT WITH CEMENT MORTAR PRISMS WHICH ARE BEING EXPOSED TO FOUR DIFFERENT ENVIRONMENTAL CONDITIONS (NORMAL CLIMATE, HEAT, WATER, AND OPEN-AIR WEATHERING). OTHER LONG-TERM STUDIES ON SYNTHETIC RESIN MORTARS ARE ANTICIPATED; THESE SHOULD PROVIDE DATA ON BEARING CAPACITY AND DEFORMATION BEHAVIOUR IN RELATION TO TEMPERATURE AND THE DURATION OF TEMPERATURE EFFECTS. FURTHER STUDIES ARE TO BE MADE WITH METHODS BY MEANS OF WHICH THE CRITICAL TEMPERATURE OF THE SYNTHETIC RESIN/ AGGREGATE SYSTEM CAN BE DETERMINED. SEE ALSO IRRD RESEARCH PROJECT NO. 700919.