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All Journal Waste Technology Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Pondasi Science and Physics Education Journal (SPEJ) Rang Teknik Journal Astonjadro CANTILEVER Jurnal Teknologi Jurnal Ilmiah Wahana Pendidikan Jurnal Ilmiah Arsitektur Teknika AKADEMIK: Jurnal Mahasiswa Humanis Journal of Innovation Research and Knowledge SAINSTEK Eduvest - Journal of Universal Studies Innovative: Journal Of Social Science Research Jurnal Ilmiah Sultan Agung Journal of Engineering Science and Technology Management VISA: Journal of Vision and Ideas Advance Sustainable Science, Engineering and Technology (ASSET) Jurnal Penelitian Transportasi Darat Scripta Technica: Journal of Engineering and Applied Technology
Pratikso Pratikso
Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Sultan Agung Semarang
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Journal : Scripta Technica: Journal of Engineering and Applied Technology

 1 
Analisa Kuat Tekan dan Kuat Tarik Beton dengan Menggunakan Batu Apung Sebagai Substitusi Agregat Halus Firdaus Rizal Auliya Hadi; Ditya Ikram Rif’aa; Pratikso, Pratikso
Journal of Engineering and Applied Technology Vol 2 No 1 (2026): : June: Scripta Technica: Journal of Engineering and Applied Technology
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65310/r0rkfq55

Abstract

This study aims to analyze the effect of using pumice as a partial substitute for fine aggregate on the compressive strength, splitting tensile strength, flexural strength, unit weight, and workability of lightweight concrete. The research method employed laboratory experiments with a design strength of fc’ 20 MPa based on SNI 7656:2012. The pumice substitution levels were set at 0%, 5%, 10%, and 15% of the fine aggregate weight, with the addition of a superplasticizer at 0.5% of the cement weight. Tests were conducted at 7 and 28 days of concrete age using a Universal Testing Machine to obtain the concrete’s mechanical parameters. The results showed that increasing the pumice content caused a decrease in the concrete’s unit weight and slump value due to the high porosity and water absorption of the pumice aggregate. Substitution levels of 5% and 10% still produced relatively stable compressive strength, tensile strength, and flexural strength, meeting the design quality standards for normal concrete. A 15% substitution showed a more significant decrease in mechanical strength due to increased internal voids and weak interlocking between materials. This study confirms that pumice has the potential to be used as an alternative material in the development of lightweight concrete with controlled weight efficiency and mechanical performance.    
Pengaruh Siklus Beban Gempa Berulang terhadap Perilaku Tanah yang Diperkuat Geosintetik Muhammad Satria Pandu Justitia; Taufik Efendi Fadil; Pratikso, Pratikso; Lisa Fitriyana
Journal of Engineering and Applied Technology Vol 2 No 1 (2026): : June: Scripta Technica: Journal of Engineering and Applied Technology
Publisher : CV SCRIPTA INTELEKTUAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65310/qgeje324

Abstract

This study aims to analyze the effect of repeated seismic loading cycles on the mechanical behavior of geosynthetic-reinforced soil using a numerical simulation approach based on the finite element method. Modeling was performed using PLAXIS 2D v22, representing a 10-meter-high soil embankment on soft subgrade based on Standard Penetration Test data from the Solo–Yogyakarta Toll Road project at STA 0+616. Reinforcement systems using woven and non-woven geotextiles were modeled under cyclic loading conditions in the form of a sinusoidal wave with a maximum ground acceleration of 0.4562 g, a frequency of 0.8 Hz, and 50 loading cycles. The analysis results show that the use of geosynthetics is capable of improving system stability and significantly reducing deformation compared to unreinforced soil. Woven geotextiles produced the most optimal response with a maximum deformation of 2.699 × 10⁻³ m and a safety factor of 1.488 due to their higher tensile stiffness capacity. Non-woven geotextiles still improved soil performance, but their effectiveness was lower under repeated dynamic loading. The mechanical response of the soil is influenced by soil–geosynthetic interaction, dynamic stress distribution, reinforcement layer configuration, and cyclic loading characteristics. The research findings underscore the importance of integrating dynamic analysis into geotechnical design in earthquake-prone regions to enhance the long-term stability and resilience of infrastructure.    
Co-Authors - Darmadi Abdul Rochim Abied Rizky Putra Muttaqien Achmad Furqon, Achmad Agus Muldiyanto, Agus Alfa Narendra Anwar, Roy Rizali Arga, Muthia Azizah Putu Arief, Rifqi Brlyant Azza, Muhammad Farid Ditya Ikram Rif’aa Eko Supriyatno, Eko Fauzi, Mukh ”˜Allaam Firdaus Rizal Auliya Hadi Giffari, Muhammad Naufal Hadicara, Danang Hapsoro, Tunggul Harnedi Maizir Haryagung, Ary Hermin Poedjiastoeti Hirwo, N.T. Ibnu Toto Husodo, Ibnu Toto Irawan, Arie isna, muhamamd aziz Joko Sutrisno Jusi, Ulfa Karlinasari, R. Karlinasari, Rinda Kartono Wibowo, Kartono Koswara, Dede Lisa Fitriyana Lisa Fitriyana, Lisa Maharani, Ifa Agustin Miftachul Anwar Mudjiastuti Handajani Muhammad Satria Pandu Justitia Muharifin, Eko Mulyadi Mulyadi Mustofa Kamal Aziz, Mustofa Kamal Nurwijayanti Nuryaman, Asep P Purwanto Putri, Ananda Aurellie Surya Rachmat Mudiyono, Rachmat Rachmat, Mudiyono Rahmat Mudiyono, Rahmat Rahmat, Mudiyono Rifqi Brilyant Arief, Rifqi Brilyant Saputra, Aditiya Lutfi Setiawan, Ichwan Siegfried Siegfried Sihombing, Alexander Tuahta Soedarsono, Soedarsono Sri Wiwoho Mudjanarko, Sri Wiwoho Sudarno Sudarno Syahril Taufik Syaiful Syaiful Taufik Efendi Fadil Thoifurrohman, Ova Utomo, Eko Wahyu Wardiningsih, S.