INFLUENCE OF WATER-REDUCING AND SET-RETARDING ADMIXTURES ON CREEP OF LIGHTWEIGHT AGGREGATE CONCRETE

TEST RESULTS ON THE INFLUENCE OF TWO ADMIXTURES, ONE BELONGING TO CLASS 3, THE OTHER TO CLASS 1 OF THE A.S.T.M. CLASSIFICATION, ON CREEP OF LIGHTWEIGHT AGGREGATE CONCRETE ARE PRESENTED. IT IS SHOWN THAT A CONSIDERABLE INCREASE IN CREEP MAY RESULT, BUT THE CREEP DEFLECTION RECOMMENDATIONS OF A.C.I. ARE CONSERVATIVE FOR LIGHTWEIGHT AGGREGATE CONCRETE. DATA ON TEE INFLUENCE OF ADMIXTURES ON THE ELASTIC DEFORMATION OF CONCRETE ARE ALSO GIVEN. /CRIC/FESR/RRL/A/