Strengthening of compression member by ferrocement with high performance mortar - Jacketing technique

External strengthening using Jacketing technique can suitably use for increasing the Axial and shear strength of RC square Column [1]. This paper includes an experimental investigation for studying the effectiveness and suitability of high performance ferrocement mortar mixes as a retrofitting material and its use as jacket for square columns. The experimental programme included development of high performance ferrocement mortar mix by adding 10% of silica fumes and 1% of super plasticiser and its use in retrofitting of square column specimens which were either intact or distressed earlier to certain level [2]. The experimental programme consisted of testing 2 controlled specimens and 6 retrofitted specimens initially distressed to 80-85% of theoretical stress level, repairing, and retrofitting prior to testing. The control specimens were of dimension 100mmx100mm and 500 mm height, cast in M30 conventionally vibrated concrete, reinforced longitudinally with four bars of 8 mm diameter and six lateral ties of 6 mm diameter as transverse reinforcement [3]. Three different mixes proportions of 1:1.5, 1:2, 1:3, were used for jacketing around the columns. The jacket was reinforced with mild steel welded wire mesh 50 mm x 50 mm made of 1.16 mm diameter wire. The retrofitted specimens were tested after 28 days of curing. Carbon Fibre Reinforced Polymer (CFRP) Sheet is provided at top and bottom of the specimens. And then the results are compared at the end the Retrofitted specimen of 1:1.5 Ferrocement mix has more Load carrying capacity than other Ferrocement mix when compared with controlled of 8.85%. (C) 2020 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the International Conference on Advanced Materials Behavior and Characterization.