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Aurenia, Neriska
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Inovasi Beton Ramah Lingkungan dengan Pemanfaatan Limbah Grabeka sebagai Agregat Substitusi Nindya Ayu Hapsari, Rahma; Agung Hermawan, Indra; Rahmat Riadi, Faudi; Aurenia, Neriska
Jurnal Teknik Sipil Vol. 17 No. 2 (2024): Desember 2024
Publisher : Faculty Of Engineering University 17 August 1945 Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56444/jts.v17i2.2058

Abstract

Penggunaan limbah sebagai bahan substitusi dalam pembuatan beton ramah lingkungan menjadi alternatif yang relevan untuk mengatasi masalah lingkungan dan sumber daya yang semakin menipis. Penelitian ini berfokus pada penggunaan limbah keramik granit, limbah beton, dan cangkang kerang (Grabeka) sebagai pengganti agregat kasar dan halus dalam campuran beton. Pengujian dilakukan untuk menilai kekuatan tekan beton pada umur 28 hari serta analisis biaya dibandingkan dengan beton konvensional. Hasilnya menunjukkan bahwa beton dengan campuran limbah Grabeka mampu mencapai kekuatan tekan optimal sebesar 35,09 Mpa. Selain itu, penggunaan zat aditif Sikament NN mempercepat proses pengerasan, sehingga beton dengan agregat daur ulang menjadi lebih efisien.  
THE EFFECT OF SEASHELL WASTE AS FINE AGGREGATE SUBSTITUTION ON THE COMPRESSIVE STRENGTH OF ECO-FRIENDLY CONCRETE Hapsari, Rahma Nindya Ayu; Hermawan, Indra Agung; Riyadi, Faudi Rahmat; Aurenia, Neriska
Rang Teknik Journal Vol 9, No 1 (2026): Vol. 9 No. 1 Januari 2026
Publisher : Fakultas Teknik Universitas Muhammadiyah Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31869/rtj.v9i1.6268

Abstract

The widespread use of concrete in the construction industry contributes significantly to environmental degradation, primarily through CO₂ emissions from cement production and natural resource depletion for aggregate sourcing. This study investigates the feasibility of using seashell waste as a partial replacement for fine aggregate in concrete, aiming to maintain structural performance while promoting sustainability. A control concrete mix and an innovative mix incorporating seashell waste were prepared, with compressive strength tests conducted at 28 days. The results show that the seashell concrete achieved a compressive strength of 35.09 MPa, slightly surpassing the control concrete's 35 MPa. This minor increase is attributed to the calcium carbonate content of seashells, which contributes to a stable cementitious matrix similar to that of limestone.The findings suggest that seashell waste, abundant in coastal regions, can be effectively utilized as an eco-friendly alternative in concrete production without compromising structural integrity. By partially substituting fine aggregates with seashells, this study highlights a potential solution for reducing reliance on natural sand while supporting marine waste management. This research provides a basis for future studies on optimizing seashell content in concrete and exploring its durability under varying environmental conditions, contributing to sustainable construction practices.
Co-Authors Agung Hermawan, Indra Hermawan, Indra Agung Nindya Ayu Hapsari, Rahma Rahma Nindya Ayu Hapsari Rahmat Riadi, Faudi Riyadi, Faudi Rahmat