Experimental Investigation of the Effects of Naoh and KOH Solution on the Behavior of Concrete Square Columns Reinforced By JFRP Composites

Abstract

The objective of this experimental study is to evaluate the effect of untreated and treated Jute fibers, on the behavior of concrete members. The first category of Jute fibers fabrics is treated in the alkaline treatment of 4% of NaOH solution and the second one in 2% of the Potassium hydroxide solution, during 24h in a liquor ratio of 10:1. In the case of specimens reinforced by treated fibers in 4% of NaOH have noted an increase of 25% compared to unreinforced specimens and 10.93% compared to untreated specimens. This concludes that the mechanical properties of the composite are enhanced by the treatment of the Jute fibers in 4% of NaOH. They become more compatible with the matrix, which increases the maximum load capacity of the reinforced specimens. On the other hand, it has seen that the treatment of fibers by 2% of Potassium hydroxide decreases the maximum load capacity of specimens reinforced by treaded fibers compared to untreated specimens. This means that the treatment by 2% of KOH has a negative effect on the properties of the Jute fibers fabrics.

The Influence of the Curing Conditions on the Behavior of Jute Fibers Reinforced Concrete Cylinders

“…Thanks to their low density and cost. They used as structural strengthening systems for different reinforced concrete (RC) elements such as columns, beams, and slabs [5,6]. As stated by Hussain and Ali [7], the Jute fibers enhance crack resistance and toughness of concrete.…”