Study Of Influence Of Mineral Admixtures On Crushing And Buckling Load Of Columns

A.Kumar, K.Sita Hemanth

Glass fibre reinforced polymer (GFRP) Rebar’s has an innovative material it’s been a potential application in construction practices due to its high tensile strength, corrosive resistance ease in its applications and relatively simple construction technique. To tap such potential, the existing body of knowledge on GFRP must be expanded to provide a proper basis for officials to add this method of construction to the provisions of the building code. This thesis aims to add to that body of knowledge through experimental investigation on performance of Glass fibre reinforced rebars in compression members. Load carrying capacities of long and short columns reinforced longitudinally with glass fibre reinforced polymer rebar and laterally with steel rebar’s were compared with steel reinforcement. in this research. Test series consisted of 6 columns having 150 Ø mm diameter and 2000 mm in length of 3 long columns, and 660 mm length of 3 short columns The main study in this program is on replacing the longitudinal reinforcement partially with GFRP rebars and cement replaced by 20% with ground granulated blast furnace slag(GGBS). Comparing such differently reinforced column with fully steel reinforced and GFRP reinforced columns. Load carrying capacities and failure behaviours of columns were observed by experimental investigation and compared with theoretical values. And the circular column behaviour analysed with help of P-M interaction diagrams. Ductility Factor also find out for short columns. From the obtained results, it is observed that the replacement in longitudinal reinforcement partially with GFRP rebars in short & long columns show the higher load carrying capacities. And the failure of the column is changed for both the short &long columns.