Abstract
The new artificial lightweight aggregate, whose properties have both higher strength and lower water absorption ratio than ordinary lightweight aggregates, has been developed recently.
It was studied on seismic performance and deformation capacity of reinforced concrete column, which were made by high-strength concrete used by varied high performance aggregates with different specific gravity in the case of the column received under axial and shear force combined with bending force.
As a result, maximum stress of specimen were the same stress under the same compressive strength of concrete, but deformation capacity and failure pattern of concrete indicated different failure behaviors as specific gravity (strength) of aggregate were different, so it affected behaviors of concrete after maximum stress.
Axial strain of lightweight concrete specimen were decreased, because young’s modulus of concrete increased as specific gravity of aggregate were weighted, and the strain were bigger than which of normal concrete.
