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Concrete Filled Steel Columns (CFSC)
The CFSC system gas many advantages compared with the ordinary steel or the reinforced concrete system. One of the main advantages is the interaction between the steel column and concrete, local buckling of the steel column is delayed by the restraint of the concrete and the strength of concrete is increased by the confining effect of the steel column. Drying shrinkage and creep of the concrete are much smaller than in ordinary reinforced concrete.