CONDITION AND DEFINITION OF THE CONCRETE SURFACE FOR COATING CONCRETE CARRIAGEWAYS AND AREAS NOT USED BY VEHICLES

BESCHAFFENHEIT UND DEFINITION DER BETONOBERFLAECHE FUER DIE BESCHICHTUNG VON BETONFAHRBAHNEN UND NICHT BEFAHRENEN BAUTEILEN

THE USE OF SYNTHETIC RESIN MORTAR TO REPAIR SURFACE AND EDGE DAMAGE HAS SHOWN THAT THE SYNTHETIC RESIN MORTAR ADHERES TO THE CONCRETE, BUT THAT THE MORTAR PULLS AWAY WITH THE TOP LAYER OF THE CONCRETE, I.E. THE STRENGTH OF THE CONCRETE IS INSUFFICIENT TO ABSORB THE STRESSES WHICH OCCUR BETWEEN THE MORTAR AND THE CONCRETE. THE STRENGTH WHICH THE CONCRETE SURFACE MUST HAVE TO ENSURE THAT A COATING REMAINS PERMANENTLY ATTACHED TO IT WITHOUT THE SURFACE BEING DAMAGED IS TO BE INVESTIGATED AND DEFINED. IT IS ASSUMED THAT THE SAMPLES NEEDED FOR THE STUDIES CAN BE PRODUCED IN THE LABORATORY, SINCE IT IS IMPORTANT TO FIX LIMIT VALUES FOR GOOD AND BAD COATINGS IN ORDER TO TEST THE PRECISION OF SEPARATION OF THE PROCEDURE. SUBJECTING THE COATED SURFACE TO TENSILE TESTING IS NOT SUFFICIENTLY ACCURATE.