1998 Volume 4 Issue 6 Pages 7-12
This paper deals with filling capabilities of concretes injected into CFT columns. Bibliographies related to current CFT injection technologies were widely reviewed and the filling capability was analyzed. Based on this background, normal and high-fluidity concretes were injected into two types of steel tubular columns, and effects of the type of concrete on the injection height in the steel columns were studied. The filling capability of concretes became more satisfactory when the high-fluidity concrete was used at a low water-cement ratio, and greatly influenced by the opening area of diaphragm with respect to the cross section of the steel columns.
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