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Siti Aisyah Nurjannah, Siti Aisyah
Civil Engineering Department, Universitas Sriwijaya, Jalan Raya Palembang ? Prabumulih Km 32 Indralaya,
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Performance of Geopolymer Concrete Deep Beams with Variation in Shear Reinforcement Ratio Rifkah, Rifkah; Saloma, Saloma; Nurjannah, Siti Aisyah; Saggaff, Anis
Journal of Engineering and Technological Sciences Vol. 58 No. 1 (2026): Vol. 58 No. 1(2026): February
Publisher : Directorate for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2026.58.1.8

Abstract

The construction industry's demand for sustainable alternatives to Portland cement has prompted investigation into geopolymer concrete (GC) as a replacement for normal concrete (NC) in deep beam applications, where structural behavior with varying shear reinforcement ratios remains insufficiently understood. This study examines the structural performance of GC and NC deep beams under monotonic loading through experimental testing and numerical modeling of six specimens—three NC (NC1, NC2, NC3) and three GC (G1, G2, G3)—with shear reinforcement ratios of 0.157%, 0.314%, and 0.628%, using LVDT sensors for displacement measurement and finite element analysis for stress–displacement validation. Results show that GC beams achieved higher maximum loads (700–1038 kN) than NC beams (500–742 kN), supported by superior compressive strength (68.36 MPa vs 43.6 MPa), greater energy dissipation (2897.54–7212.62 kN·mm vs 1340.96–2513.86 kN·mm), and improved shear capacity (ratio 0.74 vs 0.66). Ductility ratios ranged from 3.07–4.65 for NC and 1.62–2.10 for GC specimens. The enhanced performance of GC is attributed to its higher material strength, both materials exhibited similar stress distributions aligned with the strut-and-tie model and compression-controlled failure via diagonal strut formation between the loading points and supports. This study concludes GC offers strong potential as sustainable deep-beam material, achieving 40–48% higher maximum loads while maintaining comparable deflection behavior, with optimal performance at a shear reinforcement ratio of 0.628%. Experimental numerical differences remained below 1.5%. Future work should address long-term durability under cyclic loading and optimization of bond performance between GC and reinforcement materials.
Co-Authors Andri Setiawan Anggara, Veron Bella Anis Saggaff Arie Putra Usman Asmarani, Dwi Bambang Budiono Bambang Budiono Bambang Budiono Bambang Utomo Budiono, Bambang Budiono, Bambang Fauzan Hanif, Muhammad Gunawan , Jose Andre Hanafiah Hanafiah, Hanafiah Hanafiah, Hanafiah Hasyim, Saloma Iswandi Imran Lim, Erwin Ma'ruf, Ahmad Muhammada, Muhammada Mulyadi, Asri Nana Pudja Sukmana Ngian, Shek Poi Nurazizah, Ervi Tri Romayni pengelola, pengelola Prasetiya, Muhammad Anggara Adji Rifkah, Rifkah Rosidawani, Rosidawani Saloma Saloma Saptahari Sugiri Saptahari Sugiri Sholikhudin, M. Anang Sugiri, Saptahari Sugiri, Saptahari Sukmana, Nana Pudja Sutanto Muliawan Verinazul Septriansyah Wanda Lestari