this study, size effect of concrete members subjected to the axial load and bending moment is investigated using a series of C-shaped specimens of which test procedure is similar to those of Hognestad, Hanson, and McHemy. test variable is a…
this study, size effect of concrete members subjected to the axial load and bending moment is investigated using a series of C-shaped specimens of which test procedure is similar to those of Hognestad, Hanson, and McHemy. test variable is a size ratio of specimens(!: 1/2: 1/4) at the concrete compressive strength of 50 MPa Test results show that the compression strength at failure decreases as the size of specimen increases, that is, the size effect law is present. Mooel equation is derived using regression analyses with experimental data; it is that they perform better than Bazant' s model Additionally, it is observed that there is a slight increase in elastic modulus and relative decrease in corresponding to the maximum stress of C-shaped specimens compared to those of cylindrical sooc1mens. Further experimental study will changing of concrete compressive strength to determine its effect at the other strength.