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All Journal Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Teras Jurnal Journal of Advanced Civil and Environmental Engineering Jurnal Pemberdayaan Masyarakat Madani (JPMM) Rancang Bangun Physics Communication Jurnal Litbang Kota Pekalongan Teknika Structure Adopsi Teknologi dan Sistem Informasi Jurnal Civil Engineering Study Tematik Jurnal Pengabdian KOLABORATIF Advance Sustainable Science, Engineering and Technology (ASSET)
Purwanti, Hani
Teknik Sipil, Universitas Semarang
Agriculture, Biological Sciences & Forestry Arts Humanities Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Physics Public Health Social Sciences Transportation Other

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Optimization of Coconut Fiber and Styrofoam Composition in Concrete to Improve Strength and Sound Absorption Purwanto; Firmawan, Ferry; Ahmad, Fahrudin; Purwanti, Hani; Husna, Aimmatul; Darus, Nadirah; Haron, Zaiton; Yahya, Khairulzan
Advance Sustainable Science Engineering and Technology Vol. 8 No. 2 (2026): February-April
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v8i2.2752

Abstract

This study aimed to evaluate the effect of coconut husk and Expanded Polystyrene (EPS) composition on the mechanical and acoustic properties of lightweight concrete. The research was conducted experimentally using a two-way factorial design with coconut husk variations of 0%, 0.5%, 1%, 1.5%, and 2% of cement weight and EPS variations of 0%, 10%, 20%, and 30% of coarse aggregate volume. A total of 20 mix variations (5 coir levels × 4 EPS levels) were prepared with three replications for each test, resulting in 120 specimens. Compressive strength was tested at 7 days following ASTM C39, while sound absorption was measured at frequencies of 100–2000 Hz based on ISO 10534-2. The results showed that the addition of coconut husk up to 1% improved compressive strength through fibre reinforcement, whereas increasing EPS content enhanced sound absorption due to higher porosity but reduced mechanical strength. Statistical analysis using ANOVA (R² = 0.94, p < 0.05) and desirability optimisation identified the optimal composition at 1% coconut husk and 10% EPS. The developed lightweight concrete is suitable for non-structural building components requiring improved acoustic performance and reduced weight.
Co-Authors Adolf Situmorang Aimmatul Husna, Aimmatul Alhabsy, Said Nabil Hasan Anang Prakoso Anik Kustirini, Anik Baehaqi Bambang Sudarmanto bambang sudarmanto Cahyono, Dhamang Budi crista, ngudi Darus, Nadirah Edy Susilo Enggartiasto, Lintang Fahrudin Ahmad Faizal Mahmud, Faizal Fatma Cholida, Nur Fithriani Fatma Cholida, Nurfithriani Fatma, Nur Fithriani Faza, Muhammad Reyno Ferry Firmawan Ferry Firmawan Istianah Istianah Khairulzan Yahya, Khairulzan Kukuh Wisnuaji Widiatmoko Lila Anggraini M Rafi Rangga P Masa, Amin Padmo Azam Masvika, Hendra Mentari S Sitorus Mudjiastuti Handajani Muhammad Latif Muhammad Latif Nur Fithriani F. Cholida Prasetyo, Muhammad Eko Pratama, Rifki Puji Lestari, Diah Aryati Purwanto Purwanto P. Purwanto Purwanto Satria Pinandita Satria Pinandita Setyati Budiningrum, Diah Talitha Zhafira Zaiton Haron, Zaiton