Author: Varol KOÇ
Publishing Date: 2006
Volume 21 Issue 3_4
Mod‐I elements which produced from normal strength concrete are tested under eccentric compressive loads parallel to the cantilever axes. Loads are applied having eccentricties of e=c/5 and e=c/10 eccentric where c is cantilever width. Specimens are produced having t=30, 40 and 50 mm in constant thickness, three different series and geometrically similar in other two dimensions with the ratio of 1:2:4. Each series have two different specimens to be loaded with two different load eccentricity and each element in each series are prepared as three units. Each series include 9 elements and three series include 27 elements. Total of 54 units specimens are produced and tested for two different load eccentricity. Two horizontal and one vertical displacements are measured at each experiment and opening displacements are obtained for adding to horizontal displacements for each cantilever ends. Test results are analysed by size effect and the parameters of size effect are found by drawing bi‐ logarithmic graphics for each series. Energy absorbed capacities are obtained for each specimen by utilizing from the load‐ horizontal displacement curve.
Key Words: ” Fracture mechanic; concrete size effect; mod‐I failure; double cantilever beams”