Pengaruh Penggunaan Serat Bambu dan Rotan pada Mortar Ecc yang Berbasis Fly Ash dan Abu Cangkang Sawit (PKSA) terhadap Kuat Tarik

Abstract

Concrete is a building material that is still widely used in the construction industry. However, its extensive use contributes significantly to the increase in global carbon emissions. One alternative to reduce this impact is the use of Bio-Fiber Engineered Cementitious Composite (Bio-Fiber ECC), by substituting cement with fly ash and palm shell ash, along with the addition of bamboo and rattan fibers.This study investigates the effect of Bio-Fiber ECC with fiber content percentages of 0%, 1%, 1.5%, and 2% by weight of cement on tensile strength. A total of 48 prismatic dog bone-shaped specimens were prepared, using two types of fibers—bamboo and rattan—each with a length of 10 mm and a diameter of 1 mm. For each fiber type, four variations of fiber content were used: 0%, 1%, 1.5%, and 2% by weight of cement. Each variation consisted of 3 samples. The specimens were tested for tensile strength using a Universal Testing Machine after curing for 3 days and 7 days.Based on the test results, the highest tensile strength was achieved in the RT_1_2% variation, with a value of 1.41 MPa. The tensile strength values obtained for the bamboo fiber variations at 7 days of age were 0.58 MPa, 0.68 MPa, 0.72 MPa, and 0.61 MPa for 0%, 1%, 1.5%, and 2% fiber content, respectively. Meanwhile, for the rattan fiber variations, the tensile strength values at 7 days were 0.58 MPa, 0.58 MPa, 0.75 MPa, and 1.23 MPa, respectively.It can be concluded that increasing the bamboo fiber content leads to a decrease in the tensile strength of Bio-Fiber ECC, whereas the opposite trend is observed with the use of rattan fiber.