Principal Investigator: Yan Xiao, Ph.D., PE, Assistant Professor of Civil Engineering
Co-Principal Investigator: James C. Anderson, Ph.D., Professor of Civil Engineering
Research Assistant: Armen Martirossyan
Funding: Carpenters / Contractors Cooperation Committee
Six one third scale high strength concrete columns have been tested
under eccentric compression. Ready mix concrete with cylinder
compressive strength of 10 ksi (69 MPa) and G60 (nominal yield
strength is 60 ksi or 414 MPa) reinforcing steel were used in
the specimens. Test results indicated that the ultimate axial
load and moment carrying capacities of the high strength concrete
columns exceeded the capacities predicted based on ACI stress
block. Improved prediction to the ultimate capacities of high
strength concrete columns can be achieved using stress-strain
model developed by the authors based on concentric axial loading
tests of a large number of high strength concrete stub columns.