Experimental Study On Seismic Performance Of Low Recycled Aggregate Concrete Shear-walls

With the rapid development of China’s construction industry, the growing demand ofconstruction materials, construction waste discharge has been also increasing. In order toalleviate the resource and environmental issues resulting from this, a lot of researchers andscholars did some study on the recycle concrete and its regeneration techniques. Therecycled concretes are made of the waste concrete, waste brick, waste mortar, and theresidue after crushing, screening, milling, processing, and according to a certain proportionand level with mixed into the recycled aggregate concrete, by replacing some or all of thenatural bone material. Currently, the recycled aggregate concrete technology is consideredthe most effective measures to solve the problem of waste concretes.Reinforced concrete shear wall is widely used in China’s high-rise buildings becauseof it’s better horizontal and vertical load-carrying abilities, it’s the most effective lateralforce resisting member in high-rise building structures. The study of seismic performancesof recycled concrete shear walls definitely has some important theoretical significance forthe recycled concrete construction applications.This paper designs manufactured three low replacement ratio of100%recycledaggregate concrete shear walls, with the depth-width ratio of1.0for all three, samereinforcement and different axial compression ratios, by taking the low-reversed cyclicloading and with reference to relevant theories and codes, such as the failure pattern,load-carrying ability, ductility, stiffness and energy dissipation and so forth, we did studyand analyze the seismic performance of low concrete shear-wall. The experiment showsthat axial compression ratio of recycle shear wall is an important factor to the load-carryingability. With the axial compression ratio increases increase, the stiffness and load-carryingcapacity increased, but the ductility and energy dissipation ability decrease decreased, andseismic performance also declined at the same time.With finite element software ABAQUS for the numerical simulation to calculatespecimen stress maps of concrete and reinforcement compared with the experimentalresults, the results showed indicated, the numerical simulation of specimens yielding forms,and the ultimate load and failure patterns agreed well with that of experimental results...