Abstract
In this paper we describe an experimental study of the expansive concrete filled steel tube using for the brace member of the energy dissipative braced frame structure. The results of the compression test of the expansive concrete in the tube may be summarized as follows : (1) The expansive concrete with Water/ (Cement+Silica fume+Expansive admixture) =30% and Ex/ (C+S+Ex) ≥55% has a very high expansive capacity. (2) The apparent axial initial stiffness of the expansive concrete with W/ (C+S+Ex) =30% in the tube is as same as the Young's modulus of the usual concrete without the expansive admixture.
Finally, we showed the compression design strength and condition of this brace member with the expansive concrete filled tube
