Post-peak behaviour of composite column using a ductile lightweight aggregate concrete
Document Type
Article
Publication Date
2-18-2021
Abstract
Oil palm shell (OPS) concrete filled steel tube (CFT) columns are acknowledged to be a new type of sustainable composite column. In this type of column, the conventional coarse aggregate was partially replaced with OPS lightweight aggregate to provide a green composite column. This type of CFT column showed higher energy absorption and flexibility compared to CFT columns with normal weight concrete. This research studied the effect of the strength of OPS concrete on the axial compressive behaviour of CFT columns for two grades of OPS concretes. The behaviour was comparable to that of CFT columns with two grades of normal concrete. The results showed that the CFT columns with OPS concrete achieved a new post-peak behaviour. The experimental results of the axial compressive load were compared with the estimation of two international standards. EC4-1994 and ACI318-14 showed a reliable and conservative estimation of the axial load capacity of CFT columns, respectively.
Keywords
Composite column, Post-peck behaviour, Ductile lightweight aggregate, CFT column, Oil palm shell lightweight concrete, Agricultural waste material
Divisions
Architecture
Publication Title
International Journal of Concrete Structures and Materials
Volume
15
Issue
1
Publisher
SpringerOpen
Publisher Location
ONE NEW YORK PLAZA, SUITE 4600, NEW YORK, NY, UNITED STATES