2-DIMENSIONAL SHAPE ANALYSES OF THE CONCRETE CRACK SURFACES INTRODUCED BY VARIOUS KINDS OF STRESS : A basic study on shape properties of the concrete crack surface Part 2

Abstract

Four series of experiments are performed using each five concrete specimens, in which cracks are introduced by tension, splitting, bending moment and shear force. These crack surfaces are measured to take its 3-dimensional images by laser beam setup. And then these images are analyzed with the 2-dimensional crack shape method. Appropriately the results show that 1) Crack by tension and crack by splitting have a similar tendency toward incline and depth of the surface, 2) Crack by bending moment and crack by shear force have a deeper crack band than that by tension or splitting