STRESS-STRAIN BEHAVIOUR OF VARIOUS CONSTRUCTION MATERIALS

SPANNUNGS-DEHNUNGSVERHALTEN VERSCHIEDENER BAUSTOFFE

THE STRESS-STRAIN BEHAVIOUR OF LIGHT WEIGHT CONCRETE MADE FROM EXPANDED SLATE AGGREGATES AND PEARLITE CONCRETE WAS TESTED ON PRISMATIC TEST PIECES 15 X 15 X 60 CM. LIGHT WEIGHT CONCRETE MADE FROM EXPANDED SLATE AGGREGATES (BERWILITE): WITH A COMPRESSION STRENGTH BETA (P) = 280 KP/SQ CM THE AVERAGE TENSILE STRENGTH AT THE CENTRE WAS 18.0 KP/SQ CM AND THE E-MODULUS CA. 130000 KP/SQ CM. THE TRANSVERSE STRAIN VALUE VARIED BETWEEN 0.15 AND 0.22. PERLITE CONCRETE: THE PRISM STRENGTH VARIED BETWEEN 24 AND 80 KP/SQ CM. THE ASSOCIATED E-MODULUS WAS BETWEEN 21000 AND 43100 KP/SQ CM. THE CENTRAL TENSILE STRENGTH WAS CA. 5 KP/SQ CM. THE SHRINKAGE VALUE WAS 1.85/1000 AFTER 6 MONTHS. THE CREEP DEFORMATIONS AFTER 6 MONTHS AMOUNTED TO 480% OF THE ELASTIC COMPRESSION.