Behavior of rc concrete specimen wrapped by ferrocement composites
By: Ghogare, A. V
.
Contributor(s): Kondraivendhan, B.
Publisher: Thane ACC LTD 2023Edition: Vol.97(12), Dec.Description: 30-36p.Subject(s): ARCHITECTURE GENERAL (AR-GEN)Online resources: Click here
In:
Indian Concrete Journal - ICJSummary: Strengthening present structures has become an important segment of the construction industry due to various considerations such as alteration in the corrosion of reinforcement, bad quality of construction, and change in loading conditions. Also, the structures required to improve to new design requirements. So, strengthening existing systems has gained the serious focus of researchers worldwide during past some decades. An experimental study was conducted on reinforced concrete specimens to investigate the comparative performance of reinforced concrete specimens wrapped with ferro cement (Ferro-CM) and Ferro-Geopolymer (Ferro-GPM) composites under axial loading. Parameters such as column cross-sectional shape, L/d ratio (4.33 and 2), no. of ferrocement layers, and wrap thickness were taken as variables for this investigation. Experimental results revealed that the loadcarrying performance reduces as the aspect ratio increases. Furthermore, short column exhibits more load-carrying capability than slender columns for the same cross-sectional area. Similarly, wrap thickness, i.e., the number of layers of ferro mesh, enhances the load-carrying capacity compared to unwrapped column specimens. From the experimental results, it can be stated that the columns specimen wrapped with ferro-geopolymer considerably gain strength compared to the wrapped conventional ferrocement composites. The first crack come into sight near the top corner and travel vertically, disconnecting the wire mesh from the mortar layer, later failure happened of the core concrete specimen.
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Strengthening present structures has become an important segment of the construction industry due to various considerations such as alteration in the corrosion of reinforcement, bad quality of construction, and change in loading conditions. Also, the structures required to improve to new design requirements. So, strengthening existing systems has gained the serious focus of researchers worldwide during past some decades. An experimental study was conducted on reinforced concrete specimens to investigate the comparative performance of reinforced concrete specimens wrapped with ferro cement (Ferro-CM) and Ferro-Geopolymer (Ferro-GPM) composites under axial loading. Parameters such as column cross-sectional shape, L/d ratio (4.33 and 2), no. of ferrocement layers, and wrap thickness were taken as variables for this investigation. Experimental results revealed that the loadcarrying performance reduces as the aspect ratio increases. Furthermore, short column exhibits more load-carrying capability than slender columns for the same cross-sectional area. Similarly, wrap thickness, i.e., the number of layers of ferro mesh, enhances the load-carrying capacity compared to unwrapped column specimens. From the experimental results, it can be stated that the columns specimen wrapped with ferro-geopolymer considerably gain strength compared to the wrapped conventional ferrocement composites. The first crack come into sight near the top corner and travel vertically, disconnecting the wire mesh from the mortar layer, later failure happened of the core concrete specimen.
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