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Sabila, Ghaitsa Zahira
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Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Engineering Mechanical Engineering

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Pengaruh Kombinasi Agregat Halus dan Volume Foam terhadap Sifat Mekanik Beton Busa Naifah, Naifah; Sabila, Ghaitsa Zahira; Bahri, Syamsul; Miswar, Khairul
Jurnal Teknologi Vol 25, No 2 (2025): Agustus 2025
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v25i2.7551

Abstract

Lightweight concrete is defined as concrete utilizing lightweight aggregates or a combination of fine aggregates and natural sand, with a maximum density not exceeding 1850 kg/m³. Recent advancements in foam concrete—a cement-based material with a density range of 400–1850 kg/m³—have expanded its applications in structural and non-structural components. This study investigates the effect of fine aggregate particle size and foam volume on the compressive strength of lightweight foam concrete. Fine aggregates with particle sizes of 4.75 mm, 2.36 mm, and 1.18 mm were used, corresponding to target densities of 800 kg/m³, 1000 kg/m³, and 1200 kg/m³. The mix design was based on the Absolute Volume Method, following ASTM C29 and SNI standards. Experimental results indicate that the use of 4.75 mm aggregate resulted in the highest percentage increase in compressive strength across all dencity levels, namely 1.50% at 800 kg/m³, 2.08% at 1000 kg/m³, and 1.34% at 1200 kg/m³. At the highest density (1200 kg/m³), where foam content was minimized, the increase in compressive strength was more stable, recorded at 1.06% for 1.18 mm sand, 1.28% for 2.36 mm sand, and 1.34% for 4.75 mm sand. The findings highlight that both aggregate gradation and foam volume significantly affect the mechanical performance of foam concrete, with coarser aggregates offering better strength performance, particularly at higher densities.
PENGARUH PENGGUNAAN BUTIRAN AGREGAT HALUS DAN VOLUME FOAM TERHADAP KUAT TEKAN BETON BUSA Sabila, Ghaitsa Zahira; Bahri, Syamsul; Miswar, Khairul
Jurnal Sipil Sains Terapan Vol 7, No 02 (2024): JURNAL SIPIL SAINS TERAPAN
Publisher : Pusat Penelitian dan Pengabdian Masyarakat (P2M)

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Abstract

ABSTRAKBeton ringan merupakan beton yang memiliki agregat ringan atau campuran agregat halus dan pasir alam dengan ketentuan tidak boleh melampaui berat isi maksimum beton 1850 kg/m3. Dari beberapa tahun telah terjadi perkembangan pada beton busa (foam concrete), suatu pasta semen yang didefinisikan sebagai beton dengan kekuatan 400 - 1.850 kg/m3. Pada penelitian ini menggunakan berbagai butiran pasir dengan ukuran 4,75 ml, 2,36 ml dan 1,18 ml dengan density 800 kg/m3, 1000 kg/m3, dan 1200 kg/m3.   Tujuan penelitian untuk mengetahui besaran pengaruh perubahan butiran agregat halus dan volume foam pada agregat halus terhadap kuat tekan beton ringan. Penelitian ini menggunakan Metode Experimental dengan metode mix desain foam concrete yang digunakan adalah Metode Absolute mengacu pada standar ASTM C.29 dan SNI. Hasil Penelitian ini pada pasir ukuran 4,75 ml memiliki presentase kenaikan nilai kuat tekan beton busa yang tertinggi pada tiap density, yaitu sebesar1,50% pada density 800 Kg/m3, 2,08% pada density 1000 Kg/m3, dan 1,34% pada density1200 Kg/m3. Pada density 1200 Kg/m3  memiliki jumlah busa yang paling rendah sehingga memiliki presentase kenaikan nilai kuat tekan beton busa yang stabil, yaitu sebesar 1,06%pada pasir lolos saringan 1,18 ml, 1,28% pada pasir lolos saringan 2,36 ml, dan 1,34% pada pasir lolos saringan 4,75 ml. Kata Kunci: Beton Busa, Ukuran Butiran Pasir, Volume Foam, Density.   
Co-Authors Miswar, Khairul Naifah Naifah Syamsul Bahri