Strength and Ductility of HSC and SCC Slender Columns Subjected to Short-Term Eccentric Load

Data on tests of 60 eccentrically-loaded slender columns constructed of high-strength concrete (HSC), self-consolidating concrete (SCC), and traditional vibrated concrete are reported in this paper. All columns have cross sections of 100 x 100 mm (3.94 x 3.94 in.) and lengths of 2000 mm (78.8 in.). The main variables considered in the tests are the concrete strength, the longitudinal steel reinforcement ratio, and the load eccentricity. The attention is focused on the overall performance of columns: type of failure, cracking pattern, peak strength, and ductility. The tests showed that the qualitative behavior of the SCC columns was similar to the behavior of the traditional vibrated concrete columns. Different quantitative results were detected for peak strengths and ductility indexes. The SCC columns loaded with small eccentricity produced lower normalized peak strengths than the traditional vibrated columns both for normal-strength concrete and HSC. The types of failures showed that the SCC columns made of normalstrength concrete behave in a more ductile manner when compared with the other columns that were tested.