Investigation on mechanical properties of fiber reinforced concrete

Abstract

Concrete has high compression strength but low tensile strength. Therefore fibers are added to enhance the tensile strength. South Kalimantan is one of Indonesia’s largest wetlands, and the banana tree is common in this area. After harvesting, they are accumulated or be burned, causing pollution. Utilizing banana tree waste as fiber in the concrete minimizes it. This paper investigated the effect of banana fiber length and percentage of fiber by volume fraction on the compressive of mortar, tensile, and compressive concrete strength. The correlation between the compressive and tensile strength was further established. The percentage of fiber used in this research was 0.1%, 0.2%, and 0.3%, and the length of the fiber was 7cm and 15cm. The results showed that the addition of banana fiber significantly improved the mechanical properties of mortar and concrete. The compressive strength of mortar with a fiber length of 7cm was higher than 15cm. The higher percentage of fiber causes the lower compressive strength of mortar. The compressive strength of fiber-reinforced concrete was 27.9 MPa, and the ordinary concrete was only 17.91 MPa. The tensile strength of fiber-reinforced concrete was 6.96 MPa, while the ordinary concrete was just 1.93 MPa.

Green Building Materials: Mechanical Strength Characteristics of Banana Fibered Concrete with PSC and Nano-silica for Enhanced Performance

“…As the length of the ber is less than 5mm the tensile strength decreases. When the length of the ber is more than 5mm the split tensile strength exhibited good results as compared to conventional concrete (R Nurwidayati et al, 2021). In virtue of Nanosilica, the tensile strength escalated for M35BF5NS1.5 than the conventional concrete.…”

The effect of natural fiber (banana fiber) on the mechanical properties of self-compacting concrete

“…Firstly, banana fibers were extracted using a needle or pin. The banana fibers were dried under the sunlight for 3 x 24 hours (natural drying), and in this experiment, the banana fibers could be cutting for 7 cm [25] for untreated specimens. For delignification treatment of fiber, banana fibers were immersed in 5% NaOH solution for 24 hours.…”

“…Figure 3: natural fiber (a) banana stem plants, (b) natural drying of banana fibers, (c) delignification treatment, (d) cutting 7 cm of banana fibers From Fig 3, the banana fibers were drawn from the banana stem plants.Firstly, banana fibers were extracted using a needle or pin. The banana fibers were dried under the sunlight for 3 x 24 hours (natural drying), and in this experiment, the banana fibers could be cutting for 7 cm[25] for untreated specimens. For delignification treatment of fiber, banana fibers were immersed in 5% NaOH solution for 24 hours.…”