Title : STUDY OF VARIATION OF SCHMIDT HAMMER REBOUND NUMBER WITH PASTE VOLUME AND COARSE AGGREGATE SIZE IN CONCTRTE
Authors : Dipesh Majumdar, Tilak Mitra, Mitul De Mazumder
Publication : 8 - 10, October 2015
Volume : 2
Pages :
Price : 250
Abstract : Smith Hammer is a very popular and simple test to ascertain in situ strength of concrete. This paper represents the experimental investigation done to understand the change of Schmidt Hammer rebound number with the variation of concrete paste volume and size of coarse aggregate used. Concrete mixes are prepared with water to cement ratio varying from 0.40 to 0.45, cement content in the range of 300 to 450 kg/m3 and with graded aggregate of nominal size varying from 10 mm to 40 mm. Slump test, Schmidt hammer test and 28 days cube compressive strength tests were carried out on the prepared mixes. Results of Schmidt Hammer rebound number decreases with increasing aggregate size and it is independent of cement paste volume.