• Mohd Kashif Khan
• Khwaja Fahad ahmad

With the advancement of technology, the construction industry has witnessed enormous change in the production of concrete and construction materials. Such materials have helped the community to produce structures that consume less energy, environmentally friendly. However, old buildings that didn't follow the latest technology are no longer considered to have previous qualities. As a result, many researchers have continued to investigate different types of materials that can use in strengthening and rehabilitate ageing of concrete structures and render them safe from any type structural failure. Retrofitting is the process of addition of new features or modification to the old structures and bridges, i.e. it reduces the damage vulnerability of an existing structure due to seismic activities. It also improves the sustainability of the structure. Retrofit of columns is needed when the load carried by the column is increased due to either increase the number of floors or due to mistakes in the design. It is the best solution to strengthen such structures without replacing them. Fiber wrapping is also a type of retrofitting which gives encasement to the concrete which enhances the strength and ductility of concrete columns are generally used. From past extensive researches, I found that many scholars have done an experimental study as well as numerical study for strengthening of columns with help of various materials as well as various software. In this paper, a new technique for the strengthening of concrete columns is adopted. The columns were wrapped by Glass Fibre reinforced polymer (GFRP) and Aramid fibre reinforced polymer (AFRP) with two rounds. The reference column were name as (C1) which is the initial column and are repaired columns by SCC and wrapped by Glass fabric and Aramid fabric, A total of twelve Short concrete column specimens have been cast. From that six columns were tested under failure and then repaired the dismantle column with Self Compacting Concrete (SCC), from that three columns were wrapped with Glass fiber fabric (GFRP) and rest of three were wrapped with Aramid fiber fabric (AFRP), and the six fresh columns were wrapped by GFRP and AFRP by epoxy .The core dimensions of all the columns are same which is 125 mm * 125 mm * 450 mm. The experimental results show that the compressive strength of the columns can increase by wrapping of fabrics which may imparts strength to the columns. Keywords: - Self Compacting Concrete, Strengthening, Short column, Glass Fiber Fabric (GFRP), Aramid Fiber Fabric (AFRP), Wrapping.

Self Compacting Concrete, Strengthening, Short column, Glass Fiber Fabric (GFRP), Aramid Fiber Fabric (AFRP), Wrapping.

"An Experimental Study on the Strength of Retrofitted Short Column", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 4, page no.452-460, April-2019, Available :http://www.jetir.org/papers/JETIR1904I75.pdf

"An Experimental Study on the Strength of Retrofitted Short Column", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 4, page no. pp452-460, April-2019, Available at : http://www.jetir.org/papers/JETIR1904I75.pdf