The Structural Engineer > Archive > Volume 64 (1986) > Issues > Issue 16 > An Experimental Investigation of Vertical Castellated Joints Between Large Concrete Panels
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An Experimental Investigation of Vertical Castellated Joints Between Large Concrete Panels

The shear resistance of castellated joints between large, precast concrete panels is investigated experimentally. A total of 23 specimens, with various configurations of castellation and joint properties, were tested. Results obtained are compared with available theoretical methods as well as design provkions given in CP1lO and the ACI Code. A prediction model is proposed, taking into consideration the combined effect of dowel action of the reinforcing bars and the shear resistance offered by the castellation. The model gave good agreement with experimental results as a reasonable lower-bound solution with a factor of safety of 1.08. It is concluded that the width of the joint and the width of the key have no effect on the shear resistance of the joint, whereas the depth and number of keys have a direct effect on the shear capacity. Hashim M.S. Abdul-Wahab