Experimental Investigation of Concrete Filled PVC Tube Columns Confined By Plain PVC SocketN. Jamaluddin, A. A. Azeez, N. Abd Rahman, A. N. Attiyah, M. H. Wan Ibrahim, N. Mohamad and S. H. AdnanMATEC Web Conf., 103 (2017) 02006DOI: https://doi.org/10.1051/matecconf/201710302006