REPORT NO. UCB/EERC-83/19 AUGUST 1983 PB84-1S2G20 EARTHQUAKE ENGINEERING RESEARCH CENTER EFFECTS OF BOND DETERIORATION ON HYSTERETIC BEHAVIOR OF REINFORCED CONCRETE JOINTS by F.e. FlliPPOU E.P. POPOV V.V. BERTERO Report to the National Science Foundation COLLEGE OF ENGINEERING UNIVERSITY OF CALIFORNIA • Berkeley, California REPRODUCED BY NATIONAL TECHNICAL INFORMAliON SERVICE u. S. DEPARTMENT OF COMMERCE SPRINGFIELD. VA. 22161