CRACK SENSITIVITY AT EARLY AGE FOR HIGH STRENGTH AND SUPER HIGH STRENGTH CONCRETE

摘要

One high strength and one super high strength concrete, based on the same constituent materials, have been tested with respect to early autogenous deformation, thermal dilation coefficient and stress build-up under full restraint during isothermal and realistic temperature developments. The results show very different early behavior, implying a need for very different precautions to control the early crack sensitivity in practical applications of the two concretes.