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Analisis Tingkat Risiko Banjir dan Tanah Longsor di Jalur Kereta Api Makassar-Parepare Putri Zafira, Aura; Sutoyo, Sutoyo; Putra, Heriansyah; Murdiono, Jatmiko; Arief Nugroho, Danang
Jurnal Greenation Ilmu Teknik Vol. 2 No. 3 (2024): (JGIT) Jurnal Greenation Ilmu Teknik (Agustus - Oktober 2024)
Publisher : Greenation Publisher & Yayasan Global Resarch National

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/jgit.v2i3.74

Abstract

Transportasi umum merupakan kebutuhan utama bagi masyarakat di kota-kota dan kabupaten besar di Sulawesi Selatan, seperti Kota Makassar, Kabupaten Maros, Kabupaten Pangkajene dan Kepulauan, Kabupaten Barru, serta Kota Parepare. Kelancaran operasional kereta api Makassar-Parepare oleh PT Celebes Railway Indonesia menjadi prioritas utama dalam pengelolaan sistem transportasi massal. Beberapa kendala, seperti bencana banjir dan longsor, dapat mengancam operasional kereta api tersebut. Daerah yang berisiko mengalami banjir dan longsor di sepanjang jalur kereta api Makassar-Parepare dapat diidentifikasi melalui analisis Sistem Informasi Geografis. Penelitian ini bertujuan untuk menganalisis tingkat risiko banjir dan tanah longsor di sepanjang jalur operasional kereta api Makassar-Parepare dengan menggunakan metode scoring dan overlay yang terintegrasi dengan Sistem Informasi Geografis (SIG) menggunakan parameter yang berpengaruh terhadap banjir dan longsor meliputi kemiringan lahan, ketinggian lahan, curah hujan, jenis tanah, geologi, dan tekstur tanah. Hasil penelitian ini menunjukkan bahwa di sepanjang jalur kereta api Makassar-Parepare, terdapat area seluas 4459,445 Ha yang masuk pada kelas banjir risiko tinggi, 93555,26 Ha kelas banjir risiko sedang, 28538,32 Ha kelas banjir risiko rendah dan 37190,67 Ha termasuk kelas banjir aman. Jalur kereta api dari Stasiun Parangloe (13+900) hingga Stasiun Palanro (115+800) melalui daerah dengan kelas banjir “Risiko tinggi” dan “Risiko sedang”. Sementara itu, terdapat area seluas 13880,72 Ha yang masuk pada kelas longsor risiko tinggi, 69296,58 Ha kelas longsor risiko sedang, 54344,16 Ha kelas longsor risiko rendah, dan 26222,07 Ha termasuk kelas longsor aman. Jalur kereta api dari Stasiun Parangloe (13+900) hingga Stasiun Mandalle (67+857) melalui daerah dengan kelas longsor “Aman” dan “Risiko rendah”. Jalur kereta api dari Stasiun Mandalle (67+857) hingga Stasiun Palanro (115+800) melalui daerah dengan kelas longsor “Risiko sedang” dan “Risiko tinggi”.
Promoting Precipitation Technique using Bio-Chemical Grouting for Soil Liquefaction Prevention Heriansyah Putra; Hideaki Yasuhara; Naoki Kinoshita; Muhammad Fauzan
Civil Engineering Dimension Vol. 22 No. 1 (2020): MARCH 2020
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (384.047 KB) | DOI: 10.9744/ced.22.1.1-5

Abstract

The applicability of bio-chemical grouting as the environmentally friendly and economically method for liquefaction remediation was evaluated. Several combinations of organic and in-organic precipitations methods were conducted to obtain the optimum grouting solution. Organic precipitation method employs a bio-agent of urease enzyme to dissociate urea into ammonium and carbonate ions. The produced carbonate ions are precipitated as calcite crystals in the presence of calcium ions. Meanwhile, the in-organic methods were performed using chemical compounds only, without the bio-agent. Unconfined compressive strength (UCS) tests were performed to evaluate the applicability of the grouting solutions for improving the soil strength. Grouting solution is injected into the prepared sand samples. The sand samples with a relative density of 50% were treated with one and two PV for 3-day curing times. The experimental results showed that the organic precipitation method produced the high precipitated amount and resulted in the significant improvement in the strength of the treated sand. The presence of the precipitated materials within the grains of soil generated the strength of 272 kPa. The results of this study have elucidated that the organic precipitation method composed of calcium chloride, magnesium sulfate, urea and enzyme of urease may be an alternative soil-improvement technique to prevent the liquefaction susceptibility.
The Utilization of Milk as a Catalyst Material in Enzyme-Mediated Calcite Precipitation (EMCP) for Crack-Healing in Concrete Zalfa Maulida Ihsani; Heriansyah Putra
Civil Engineering Dimension Vol. 23 No. 1 (2021): MARCH 2021
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (691.707 KB) | DOI: 10.9744/ced.23.1.54-61

Abstract

This study discussed the applicability of the calcite precipitation method to repair the concrete's crack. The grouting solution of Enzyme-Mediated Calcite Precipitation (EMCP) was modified by adding milk as a catalyst in calcite formation. Cracks in concrete samples were made when the concrete was 28 days with a width of 0.1-0.3 mm. The EMCP solution composed of urease, urea, CaCl2, and milk was injected into the cracked concrete sample, and its effect on permeability and compressive strength tests were evaluated. The result shows that the optimum composition of milk used in the formation of calcite had a concentration of 5 g/L with an initial preparation temperature of 70oC, which produced 26% higher than the initial EMCP solution. The mechanical test results show that the reduction of coefficient of permeability of 92.23% compared to the cracked sample and the improve strength up to 98.75% of the non-cracked sample were obtained by three circles injection. This study elucidated that milk utilization as a catalyst material in repairing cracks with the EMCP method is a potential method for crack-healing concrete.
Effectiveness of Concrete Crack Repair Using Bacillus subtilis and Calcium Lactate Rahmawan, Rama Zaky; Erizal, Erizal; Putra, Heriansyah; Oktafiani, Pradyta Galuh; Sutoyo, Sutoyo
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 21 No. 1 (2025): May
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v21i1.71313

Abstract

Cracks facilitate aggressive substances entering the steel easily and cause corrosion of the reinforcement. There are several innovative methods for dealing with cracks in concrete, one of which is using bacteria. The purpose of using bacteria and CaL is to find out the role and effectiveness of repairing cracks in concrete. In outline, several methods and tests are carried out, including bacterial culture, test tube, concrete sample making, concrete curing, compressive strength testing, permeability testing, absorption testing, image processing testing, and microscopic testing. The test tube results showed that the highest mass of calcite was found in a solution of 2 ml of bacteria and CaL with a concentration of 65.4 g/L. The cracks appeared closed visually at 28 days of age. Through imageJ software, the crack repair rate in concrete reaches 95.94%. The effect of adding B. subtilis and CaL was proven to be able to close concrete cracks and increase the compressive strength of cracked concrete by 13.16%, reduce permeability by 53.12%, and absorption by 22.20%. This was confirmed by SEM testing and VHX-7000 observations which showed the presence of calcite crystals in the concrete pores and filled the concrete crack areas. This study elucidated that using bacillus subtilis bacteria and calcium Lactate in self-healing concrete is an effective technique to repair the concrete crack.
Exploring Students' Perception on Sustainable University: Empirical Findings in IPB University, Indonesia Utami, Anisa Dwi; Qayim, Ibnul; Putra, Heriansyah; Mardiana, Rina; Dwiyanti, Fifi Gus; Khoirunisa, Hana; Khairunnisa, Zayyaan Nabiila
Journal of Sustainability Perspectives Vol 5, No 1 (2025)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jsp.2025.26215

Abstract

Universities play a key role in driving positive change by equipping students to address environmental and social challenges. This study examines how students at IPB University perceive various sustainability initiatives implemented on campus. Based on a survey of 1,545 undergraduate students, the research explores their knowledge, awareness, and interest in these efforts. The results show that while most students are familiar with the general concept (87.6%), fewer have knowledge of specific programs, institutional rankings, or the university’s Campus Sustainability Office. Nevertheless, nearly all respondents consider these efforts important (98.7%) and support active student involvement (97.2%). Many also express a desire to see these topics integrated into academic courses (84.9%).These findings highlight the need for improved internal communication and curriculum development to enhance student participation. The study offers both practical and academic insights for improving sustainability strategies in higher education institutions. Future research should include multiple universities and consider mixed-method approaches to better understand the factors influencing student engagement
Analisis karbon operasional di Kampus IPB Dramaga Putra, Heriansyah; Erizal, Erizal; Purwanto, Mohammad Yanuar Jarwadi; Saptomo, Satyanto Krido; Qayim, Ibnul; Utami, Anisa Dwi; Ramadhanis, Zainab Dwi; Khoirunnisa, Hana
Jurnal Pengelolaan Lingkungan Berkelanjutan (Journal of Environmental Sustainability Management) JPLB, Vol 9, No 2 (2025)
Publisher : Badan Kerjasama Pusat Studi Lingkungan (BKPSL) se-Indonesia bekerjasama dengan Pusat Penelitian Lingkungan Hidup IPB (PPLH-IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36813/jplb.9.2.128-143

Abstract

The pursuit of a carbon-neutral campus is a critical goal for universities aiming to contribute to global sustainability efforts. As one of the largest universities in Indonesia, IPB University has stated a vision of sustainability as a long-term goal. This study examines the operational carbon at the IPB Dramaga Campus during 2022 to 2024, contribution of transportation aspect and energy consumption. The results show that the operational campus increases from 9,439 to15,937 tons CO2eq or 69% during 2022-2024. The increase in electricity consumption of 53% significantly contributes to carbon production from 10,557,427 kWh to 16,156,871 kWh in 2022 to 2024, respectively. In addition, the increase in the number of cars and motorbikes entering the university also contributes to the increase in operational carbon, with the daily number of cars and motorbikes entering the university increasing from 755 cars and 2,803 motorbikes in 2022 to 2,950 cars and 12,128 motorbikes in 2024. In conclusion, the management of operational carbon, including the use of renewable energy and green transportation, should be addressed to ensure that the target of the carbon balance of the 2030 IPB University can be realized.
Improvement of Shear Strength of Clay Shale Soil using Polymer-Calcite Precipitation (PCP) as Soil Stabilization Technique Ramadhan, Fathur; Fauzan, Muhammad; Putra, Heriansyah; Sudibyo, Tri
Civil Engineering Dimension Vol. 27 No. 2 (2025): SEPTEMBER 2025
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/ced.27.2.214-222

Abstract

Clay shale is an expansive soil owing to its shrinkage and expansion, leading to geotechnical issues, such as loss of strength. This study explored the effectiveness of the Polymer–Calcite Precipitation (PCP) method in improving clay shale's shear strength. This study evaluated the optimum Polyvinyl Alcohol (PVA) concentration for enhancing the shear strength and identifying the residual shear strength of the treated soil. Various tests were conducted to determine the soil properties and assess soil improvement using direct shear tests. The results indicate that adding PVA increases the cohesion value of saturated clay shale and maintains its residual strength close to its peak strength value, with the optimum concentration of 4% PVA boosting cohesion from 4.47 kPa to 32.83 kPa. In conclusion, the PCP method effectively enhances the shear strength of clay shale and offers a potential solution for soil stabilization.
Strategi dan Praksis Pengabdian Masyarakat IPB University dalam Pembangunan Berkelanjutan (SDGs) Mardiana, Rina; Purwawangsa, Handian; Qayim, Ibnul; Dwiyanti, Fifi Gus; Putra, Heriansyah; Dwi Utami , Anisa
Action Research Literate Vol. 8 No. 7 (2024): Action Research Literate
Publisher : Ridwan Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46799/arl.v8i7.444

Abstract

Indonesia menghadapi berbagai tantangan lokal dan global seperti perubahan iklim, urbanisasi, ketidaksetaraan sosial, dan ketahanan pangan. Sebagai respons terhadap komitmen Indonesia terhadap Tujuan Pembangunan Berkelanjutan (SDGs), IPB University berperan aktif dalam mendukung pembangunan berkelanjutan melalui pengabdian masyarakat. Artikel ini mengulas strategi dan praksis IPB dalam melaksanakan pengabdian masyarakat berkelanjutan yang selaras dengan SDGs. Metode yang digunakan meliputi penelitian kualitatif melalui Focus Group Discussions (FGD) dan wawancara mendalam, analisis data sekunder, serta studi kasus. Data dikumpulkan dari tiga program utama, yakni OVOC (One Village One CEO), Dosen Mengabdi, dan KKN Tematik. Hasil penelitian menunjukkan bahwa IPB memiliki peran penting dalam pemberdayaan komunitas lokal dengan pengetahuan dan teknologi inovatif, meningkatkan kesejahteraan sosial-ekonomi, serta mendukung transformasi sosial. Rencana Strategis IPB 2024-2028 menargetkan integrasi SDGs, inovasi teknologi, peningkatan kolaborasi pemangku kepentingan, dan keberlanjutan jangka panjang program pengabdian masyarakat. Tantangan yang dihadapi mencakup keberlanjutan proyek, integrasi SDGs dalam semua aspek pengabdian, hambatan regulasi, dan keterlibatan pemangku kepentingan. Dengan strategi yang terencana, IPB dapat lebih efektif dalam melaksanakan program yang relevan dan berdampak. Keberhasilan dalam pengabdian masyarakat berkelanjutan juga meningkatkan citra dan reputasi IPB, membuka peluang untuk kolaborasi dan pendanaan. In response to Indonesia's commitment to the Sustainable Development Goals (SDGs), IPB University actively supports sustainable development through community service. This article reviews IPB's strategies and practices in implementing sustainable community service that are aligned with the SDGs. The methods include qualitative research, secondary data analysis, and case studies. Data were collected from three main programs: OVOC (One Village One CEO), Dosen Mengabdi, and KKN Tematik. The research findings indicate that IPB is crucial in empowering local communities with innovative knowledge and technology, improving socio-economic well-being, and supporting social transformation. The IPB Strategic Plan for 2024-2028 aims to integrate SDGs, technological innovation, enhanced stakeholder collaboration, and the long-term sustainability of community service programs. Challenges faced include project sustainability, integration of SDGs in all aspects of service, regulatory barriers, and stakeholder engagement. Success in sustaining community service will enhance IPB's image and reputation, opening up opportunities for collaboration and funding.
Analisis Perubahan Faktor Keamanan Lereng Akibat Hujan Hafidz, Achmad; Fauzan, Muhammad; Putra, Heriansyah; Daniswara, Annisa
Jurnal Teknik Sipil dan Lingkungan Vol. 4 No. 3: Desember 2019
Publisher : Departemen Teknik Sipil dan Lingkungan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jsil.4.3.169-176

Abstract

Infiltration causes a decrease in soil shear strength parameters. Decrease in soil shear strength parameters can cause landslides. Landslides often occur in Bogor Regency, one of the landslide locations is Puncak, Bogor. Landslides in Puncak, Bogor on 05 February 2018 at 09.20 WIB must have a safety factor 1.07. Changes in safety factors due to rainfall are observed from 03 February 2018 at 05.00 WIB until 05 February 2018 at 09.20 WIB. This research includes testing soil samples, pore water pressure analysis and slope stability analysis. The software used for this analysis is GeoStudio. The analysis results are the changes in safety factor due to rainfall. The safety factor on 03 February 2018 at 05.00 WIB is 1.602. Safety factor until 05 February 2018 at 03.40 WIB are still above 1.25. So, the slopes are still safe. The decline in safety factor continued until 1.070 due to a decrease in cohesion on 05 February 2018 at 09.20 WIB with cohesion on SW-SM soil and SM soil at 4.01 kPa and 9.18 kPa. So, the duration needed to change a safe slope to landslide is only 5 hours 40 minutes. This can occur because of the intensity of the rain on 05 February 2018 at 07.00 WIB and 08.00 WIB are 34.1 mm/hour and 34.9 mm/hour. Key words: cohesion, landslides, rainfall, safety factor
Analisis Kinerja Rencana Bundaran dengan Pendekatan Simulasi Mikro Sudibyo, Tri; Erizal, Erizal; Mahardi, Purwo; Fauzan, Muhammad; Putra, Heriansyah
Jurnal Teknik Sipil dan Lingkungan Vol. 4 No. 3: Desember 2019
Publisher : Departemen Teknik Sipil dan Lingkungan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jsil.4.3.177-186

Abstract

Urban road network typically consists of many intersections which commonly lead to traffic problems. In relatively low traffic, a simple priority intersection will be sufficient and lead no traffic problem without necessarily implement traffic lights, roundabout or others. In an urban area where traffic demands are high, intersections need to be treated with an accurate traffic engineering approach. There are many different approaches to reduce the traffic problem in intersection including traffic light, roundabout, or interchange. Cimahpar Raya street and Indobaso intersections are urban areas in Bogor city with the high demand for transportation and often having a congestion problem in peak hour. The Office of Public Works and Spatial Planning (PUPR) of Bogor city plans to develop and change the Indobaso intersection to be a roundabout, while also increasing the lane width of the approaching roads. This study was conducted to assess the performance changes of the Indobaso intersection improvement by developing a traffic model of the intersection. The planned roundabout and lane width improvement significantly reduce the traffic delays by 90,07%, reduce travel time by 51,76%, improve average speed by 83,77%, and reduce the traffic density by 88,54% compared to the current condition of the intersection which lacks required lane road width and maneuver area.Key words: urban road, intersection, traffic model
Co-Authors Achmad Hafidz Agus Purwito Akbar Renaldi Loebis Albar, Dimas Kharizmi Alfian Helmi Alifah Fidela Amigunani, Zahra Wajdini Amperanoto, Agus Andes Ismayana Andra Ardiana Angie Irmajulianna Annisa Daniswara Apriadi, Apriadi Apriadi, Apriadi Ardhana, Wigo Ari Setiawan Arief Nugroho, Danang Arief Sabdo Yuwono Arif Satria Aryanti, Windy D Aswin Lim Athourrohman, Muhammad Aulia , Syifa Aulia Andi Mustika Bella Yuliani Bilqist, Fitri W Budi Purwanto Budijanto Widjaja Chusnul Arif Daniswara, Annisa Debendra Neupane Devya Meisnnehr Devyan Meisnnehr Dian Hestiyantari Dodik Ridho Nurrochmat Dwi Utami , Anisa Eka Putra, Reza Erizal Erizal , Erizal . Erizal Erizal Faiq, Muhammad F Fauzan Subeantoro Fazrina Andriani Sakinah Lubis Febrianto, Ari Febrita, Joana Fifi Gus Dwiyanti Fikha Raihani Fitriyah, Fadla Salma Giri Rasyidpradana Ganda Hafidz, Achmad Hamdun, Mohammad Handian Purwawangsa Hendra Prasetia Henky Muljana Herlan Darmawan Hidayat, Febrian R Hideaki Yasuhara Hideaki Yasuhara Hideaki Yasuhara Hideaki Yasuhara Hudaya, Aang Husin Alatas Hutapea, Jose T I Wayan Wirya Aristyana IBNUL QAYIM Imam Suyanto IPB, BPKB Irgie Yudhistira irwan meilano Irzaman, Irzaman ISKANDAR ZULKARNAEN SIREGAR Julianto, Baskoro Tri Khairunnisa, Zayyaan Nabiila Khayyira, Avrill Khoirunisa, Hana Khoirunnisa, Hana Kosasih, Akhmad Larasaty Layla Alifani Ekrep Loebis, Akbar Renaldi Lofianda, Luthfi Lukvy, Wisely Luthfi Lofianda Maharama , Mochammad Zhafran Ichsan Maria Evita Maulasih, Resti Meti Ekayani Mitra Djamal Moch Ridwan Widiansyah Mochammad Izzudin Ma’mun Moh Yasin Muhamad Raffi Rahman Muhammad Adhiragil Kandyas Muhammad Fauzan Muhammad fauzan Munawar, Muhammad A I Murdiono, Jatmiko N Annisa, Chika Naoki Kinoshita Naoki Kinoshita Naoki Kinoshita Natasyarini, Nanda Purwita Nina Siti Aminah Nofriadi Nurmansyah, Muhammad Reza Nurul Chairunnisa Nyoto Santoso Oktafiani, Pradyta Galuh Oktafiani, Pradyta Galuh Oktaviani, Tetra Praditya, Meindika R Prawira, Gilang Indracakti Purwo Mahardi Putri , Riska Aulia Putri , Risky Sherly Putri Zafira, Aura Putri, Risky Sherly Putri, Wirdatun Nafiah Putri, Zenia Dwi Rahman, Muhamad Raffi Rahmawan, Rama Zaky Rai Sita Ramadhan, Fathur Ramadhanis, Zainab Regina Aprilia Zulfikar Retna Apsari Rhini Wulan Dary Rifnadhi, Bayu RIKA RAFFIUDIN Rina Mardiana Risky Sherly Putri Risma Amelia Rivansyah, Mohamad Daffa Rizki Amelia Rosyadah, Rani Rukmana, Adi Sari, Windi Mayang Satyanto Krido Saptomo Shahilla Larasaty Slamet, Alim S Slamet, Alim Setiawan Suryanto, Wiwit Sutanto , Filipus Gianus Sutoyo Sutoyo Sutoyo Sutoyo Syamsul Arifin Tri Sudibyo Triyogo Aleksandria Ulhaq, Yasminna Dhiya Umam, Faqih Nadiya Utami, Anisa D Utami, Anisa Dwi Utami, Annisa Dwi Wahyu Srigutomo Wahyudi Wahyudi WINDRA PRIAWANDIPUTRA, WINDRA Yasuhara, Hideaki Yudi Chadirin Yuli Suharnoto Zaenal Abidin Zafira, Aura Putri Zalfa Maulida Ihsani