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All Journal Dinamisia: Jurnal Pengabdian Kepada Masyarakat Portal: Jurnal Teknik Sipil JURNAL TEKNIK SIPIL UNAYA Tameh : Journal of Civil Engineering Jurnal Pengabdian Masyarakat Bangsa Journal of Planning and Research in Civil Engineering Journal of Community Services: Sustainability and Empowerment Jurnal Teknik Sipil Jurnal Medika: Medika
Tety Sriana
Universitas Abulyatama
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PENGARUH PENAMBAHAN POFA (PALM OIL FUEL ASH) DAN EPOXY UNTUK MORTAR DENGAN PERENDAMAN AIR LAUT Peri Hamdani; Cut Rahmawati; Tety Sriana
Jurnal Teknik Sipil Unaya Vol 12 No 2 (2026): Juli 2026
Publisher : Center for Research and Community Service (LPPM) University of Abulyatama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30601/jtsu.v12i2.7772

Abstract

This study aims to analyze the effect of adding POFA (Palm Oil Fuel Ash) and epoxy on the mechanical properties of mortar immersed in seawater. POFA was utilized as a pozzolanic material to partially replace cement, while epoxy functioned as a polymer capable of enhancing bonding and densifying the mortar matrix. POFA and epoxy were added at variations of 0%, 10%, 20%, and 30%. The mortar was prepared with a cement-to-sand ratio of 1:2 and a water-cement ratio (w/c) of 0.65. Cube specimens measuring 5×5×5 cm were used for compressive strength testing, and beam specimens measuring 4×4×16 cm were used for flexural strength testing. All specimens were immersed in seawater prior to testing. The results showed that the addition of POFA and epoxy significantly influenced both compressive and flexural strength up to an optimum level. The highest compressive strength of 35.31 MPa was achieved in the mixture containing 10% POFA and 30% epoxy, while the maximum flexural strength of 0.91 MPa was obtained with 10% epoxy addition. However, excessive use of POFA and epoxy tended to reduce mechanical strength due to the decreased role of active cement and disruption of the hydration process. Therefore, the use of POFA and epoxy at optimum levels can produce more environmentally friendly mortar with improved durability and mechanical performance under seawater immersion.
Co-Authors Amalia Amalia Amalia Amalia Amalia Amalia Effendy Amri Amin Anisah Anisah Anisah, Sari Cut Rahmawati Cut Rahmawati Effendy, Amalia Eva Herlina Harifin Harifin Hayati, Kemala Ichsan Syahputra Irwan Syah Kemala Hayati Lindawati Lindawati Lusi Dwi Putri, Lusi Dwi M. Ridha Meliyana Meliyana Meliyana Meliyana Meliyana Meliyana Meliyana, Meliyana Mery Silviana Muhammad Ikhlas Muhammad Isya Muhammad Khalis Muhammad Khalis, Muhammad Muhammad Ridha Muhammad Ridha Muhammad Ridha Muhammad Zardi Muhammad Zardi Munir Munir Nurul Nazirah Peri Hamdani Putri Dini Meutia Rahmat Sufri Renni Anggraini Rusli Abdullah Ryan Setiawan Silviana, Mery Situmeang, M Hasudungan Susi Sakia Syafila Kamarudin Tengku Riza Zarzani N Teuku Nadhif Al Fath Teuku Rizky Noviandy Warniati, Linda Zardi, Muhammad