Syahirah Dalila Harahap, Nursyamsi Nursyamsi, Muhammad Aswin

KAJIAN EKSPERIMENTAL PENAMBAHAN SERAT BAMBU DAN ROTAN TERHADAP KUAT LENTUR BIO FIBER-ECC BERBASIS FLY ASH DAN ABU CANGKANG SAWIT

Introduction

Kajian eksperimental penambahan serat bambu dan rotan terhadap kuat lentur bio fiber-ecc berbasis fly ash dan abu cangkang sawit. Evaluasi eksperimental serat bambu & rotan pada Bio Fiber-ECC dari fly ash & abu cangkang sawit. Temukan peningkatan kuat lentur signifikan, optimal pada 1,5% serat 0,5 cm. Potensi material berkelanjutan.

Abstract

Engineered Cementitious Composite (ECC) merupakan material komposit inovatif yang terdiri dari semen, pasir, air, bahan aditif, dan material cementitious tambahan tanpa agregat kasar. Keunggulan utama ECC terletak pada kemampuannya menahan beban lentur dan retak mikro melalui penambahan serat. Dalam penelitian ini, digunakan serat bambu dan rotan sebagai bio fiber alami yang bersumber dari material lokal. Tujuan penelitian adalah untuk mengevaluasi pengaruh variasi kadar (1%, 1,5%, dan 2%) serta panjang serat (0,5 cm dan 1 cm) terhadap kekuatan lentur mortar ECC. Hasil pengujian menunjukkan bahwa penambahan serat alami secara umum meningkatkan kekuatan lentur. Performa terbaik dicapai pada kadar 1,5% dan panjang 0,5 cm, khususnya pada serat rotan yang mencapai 6,909 MPa pada umur 3 hari, meningkat 120% dari kontrol. Serat bambu memberikan peningkatan tertinggi pada variasi yang sama yaitu hingga 3,565 Mpa meningkat 113% pada umur 3 hari, meski performanya sedikit lebih rendah dari rotan. Penurunan kinerja pada kadar 2% diduga akibat distribusi serat yang tidak merata. Secara keseluruhan, serat bambu dan rotan berpotensi sebagai bahan penguat berkelanjutan untuk meningkatkan performa ECC.

Review

This manuscript presents a timely and relevant experimental investigation into the utilization of natural bamboo and rattan fibers to enhance the flexural strength of Engineered Cementitious Composites (ECC). The study is particularly commendable for its focus on sustainability and the use of locally sourced bio-fibers, alongside supplementary cementitious materials like fly ash and palm shell ash, to produce a more environmentally friendly composite. The primary objective, to evaluate the impact of varying fiber dosages and lengths on ECC mortar's flexural strength, is clearly defined and addresses a significant area of research in sustainable construction materials. The methodology employed, exploring fiber dosages of 1%, 1.5%, and 2% and lengths of 0.5 cm and 1 cm for both bamboo and rattan fibers, provides a systematic approach to understanding their mechanical contributions. The results demonstrate a clear positive influence of natural fiber addition on flexural strength, with optimal performance observed at a 1.5% dosage and 0.5 cm length. Notably, rattan fibers exhibited superior performance, achieving a remarkable 6.909 MPa at 3 days, representing a 120% increase over the control, while bamboo fibers also showed significant improvement (3.565 MPa, 113% increase). The explanation for the decreased performance at higher fiber dosages, attributed to uneven distribution, is a plausible and critical observation for future material design. Overall, this research offers valuable insights into the potential of bamboo and rattan as sustainable reinforcement for ECC. The findings strongly support the viability of these bio-fibers in improving mechanical properties, aligning with global efforts towards green building materials. While the abstract focuses on early age strength (3 days), the observed significant increases are promising. Further research could delve into the long-term durability, aging effects, and more detailed microstructural analysis to validate the fiber distribution hypothesis. Nevertheless, this study makes a substantial contribution to the field, highlighting practical strategies for developing high-performance, eco-friendly construction materials from readily available local resources.

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