In　recent　years,　the　utilization　of　high　performance　concrete　has　been　the　interests　of　the　structural　engineers　and　researchers.　As　a　high　performance　concrete,　self-consolidating　concrete　(SCC)　is　a　highly　flowable　concrete　that　can　fill　formwork　without　any　mechanical　vibration.　SCC＇s　unique　property　gives　it　significant　economic,　constructability　and　engineering　advantages.　The　aim　of　this　paper　is　thus　an　attempt　to　study　the　possibility　of　using　thin-walled　hollow　structural　steel　(HSS)　columns　filled　with　very　high　strength　SCC.　Tests　on　28　HSS　columns　filled　with　very　high　strength　SCC　were　conducted,　where　the　main　parameters　varied　are:　(1)　section　types,　circular　and　square;　(2)　slenderness　ratio,　from　12　to　120;　and　(3)　load　eccentricity　ratio,　from　0　to　0.6.　Comparisons　are　made　with　predicted　column　strengths　using　the　existing　codes　such　as　AISC,　EC4　and　DBJ13-51-2003.　(C)　2007　Elsevier　Ltd.　All　rights　reserved.