Abstract
Research has been carried out on the feasibility of geogrids in concrete columns. The conventional way of confining via steel stirrups in circular columns was replaced with an alternative technique, geogrids being used as partially confining material along with steel stirrups. The reasons that have inspired such experimental research include that geo-grid encourage flexibility, are easy to handle (lighter in weight) and are economical compared to steel. A total of sixteen columns were cast that varied in terms of spacing of steel stirrups, type of concrete and geogrids used. The columns were subjected to axial load, their load-deformation curves were obtained, and parameters such as ultimate load, maximum axial deformation, secant stiffness, ductility and energy dissipation were evaluated and compared to the control specimen. The test results revealed that the application of geogrids having high tensile strength along with steel fibers showed comparable results for the strength parameters of columns, thus paving out the possibility of reinforcing columns in combination with geogrids and steel fibers.
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