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Quasi-static cyclic tests on super-lightweight EPS concrete shear walls Seyed Amin Mousavi a,⇑, Seyed Mehdi Zahrai b,c, Asghar Bahrami-Rad d a School of Civil Engineering, University of Tehran, Tehran, Iran b Center of Excellence for Engineering and Management of Civil Infrastructures, School of Civil Engineering, Faculty of Engineering, The University of Tehran, Tehran, Iran c University of Ottawa, Ont., Canada d Department of Civil and Environmental Engineering, AmirKabir University of Technology, Tehran, Iran a r t i c l e i n f o Article history: Received 13 May 2013 Revised 1 February 2014 Accepted 3 February 2014 Keywords: JK wall Lightweight concrete Low strength concrete EPS concrete Cyclic test Shear wall a b s t r a c t This study introduces a new emerging structural system, called JK system, which uses JK walls as its main structural elements. JK wall, first proposed by Joseph Kiefer, is a kind of shear wall constructed with lowstrength/ super-lightweight Expanded Polystyrene (EPS) concrete and reinforced by JK panel, JK stiffener and some additional steel rebars. The study experimentally examines behavior of three JK wall specimens with different reinforcement and level of gravity loads under quasi-static cyclic loading. Obtained results indicate that JK walls can sustain large ductility demands accompanied by stable hysteresis loops. All specimens are also numerically investigated in order to obtain a reliable analytical tool. In this paper, it is shown that a low-strength concrete, currently recognized as a nonstructural material, can be used as a structural concrete having a satisfactory behavior. Finally, a seven story building with JK system is considered to numerically study the above claim. However, more studies are still required to fully capture all short and long term features of structural EPS concrete elements. Engineering Structures 65 (2014) 62–75 منبع: [Hidden Content] دانلود: [Hidden Content] iiG1ypg_.pdf