ANALYSIS OF HARDENED CONCRETE

ANALYSE VON ERHAERTETEM BETON

IN CONNECTION WITH THE REVISION OF DIN 52170 "MIXTURE RATIO AND BINDER CONTENT OF HARDENED MORTAR AND CONCRETE" DIFFERENT METHODS FOR DETERMINING THE CONCRETE COMPOSITION ARE CHECKED. FROM THE PREVIOUSLY EXISTING RESULTS IT IS SHOWN THAT THE CEMENT CONTENT OF A CONCRETE CAN ONLY BE DETERMINED TO ABOUT + OR - 10 % (RELATIVE) ACCURACY WHEN INSOLUBLE AGGREGATE IS PRESENT. IF THE AGGREGATES ARE SOLUBLE A CEMENT CONTENT IS FOUND WHICH IS ABOUT 20 % (RELATIVE) TOO HIGH.