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Naldi, Septri
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Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Engineering Materials Science & Nanotechnology Mechanical Engineering

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Kajian Kuat Tekan Bata Cellular Lightweight Concrete (CLC) dengan Tambahan Abu Cangkang Kelapa Sawit Ahmad hamidi; Setiawan, Beny; Naldi, Septri
SAINSTEK Vol. 12 No. 2 (2024)
Publisher : Sekolah Tinggi Teknologi Pekanbaru

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35583/js.v12i2.287

Abstract

Penelitian ini bertujuan untuk mengkaji pengaruh penambahan Abu Cangkang Kelapa Sawit (ACKS) terhadap kuat tekan bata ringan Cellular Lightweight Concrete (CLC). ACKS digunakan sebagai bahan tambah dengan variasi 4%, 6%, dan 8% dari bobot semen. Pengujian dilakukan terhadap benda uji berbentuk balok berukuran 15x20x60 cm pada umur 7, 14, dan 28 hari. Hasil pengujian menunjukkan bahwa agregat halus yang digunakan memenuhi spesifikasi teknis dengan kadar lumpur, kadar organik, analisis saringan, modulus kehalusan, dan berat jenis sesuai standar nasional Indonesia. Penambahan ACKS memberikan kontribusi terhadap peningkatan kuat tekan bata ringan CLC dengan variasi tertentu, sehingga berpotensi mendukung efisiensi dan keberlanjutan dalam industri konstruksi.
Study of the Characteristics of Cellular Lightweight Concrete (CLC) Bricks Using (Palm Kernel Shell) Ash as a Comment Additive Naldi, Septri; Setiawan, Beny; Kumala Sari, Resy
Journal of Engineering Science and Technology Management (JES-TM) Vol. 6 No. 1 (2026): Maret 2026
Publisher : Journal of Engineering Science and Technology Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jestm.v6i1.338

Abstract

Riau Province is one of Indonesia’s largest palm oil–producing regions, generating substantial biomass waste such as palm kernel shells. One potential use of this waste is Palm Kernel Shell Ash (PKS-Ash), which contains silica (SiO₂) and alumina (Al₂O₃) that are beneficial for cementitious reactions. This study aims to evaluate the effect of PKS-Ash as a cement additive on the properties of Cellular Lightweight Concrete (CLC) bricks, particularly unit weight, water absorption, and compressive strength. A laboratory-scale experimental method was applied. The test specimens were produced using cement, sand, water, a foaming agent, and PKS-Ash with variations of 0%, 4%, 6%, and 8% by weight of cement. All specimens were tested at curing ages of 7, 14, 21, and 28 days in accordance with SNI 8640-2018. The results at 28 days showed that the addition of PKS-Ash significantly influenced the characteristics of the CLC bricks. Compressive strength increased with higher PKS-Ash content, reaching a maximum value of 1.775 MPa at the 8% variation, compared to 0.975 MPa for the control mixture. The unit weight of the specimens ranged from 1,304.29 kg/m³ to 1,716.44 kg/m³. Water absorption values varied, with the lowest absorption observed in the 0% mixture and the highest in the 4% mixture. The study concludes that PKS-Ash has strong potential as a sustainable additive to improve the compressive strength of CLC lightweight bricks while promoting effective utilization of palm oil industry waste.
Co-Authors Ahmad Hamidi Beny Setiawan, Beny Kumala Sari, Resy