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STUDI LABORATORIUM CAMPURAN BIOPOLIMER GLUKOMANAN DAN BEESWAX UNTUK MENINGKATKAN KUAT GESER TANAH PASIR Andra Ardiana; Aswin Lim; Henky Muljana; Heriansyah Putra; Budijanto Widjaja
Jurnal Teknik Sipil Vol. 17 No. 3 (2023)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/jts.v17i3.6968

Abstract

Pada saat ini, pemakaian semen Portland (OPC) pada dunia konstruksi mulai dikurangi dan dialihkan ke material yang ramah lingkungan, seperti biopolimer. Biopolimer adalah polimer alami yang berasal dari tumbuhan, hewan, alga, jamur, atau sumber bakteri yang terdiri dari polisakarida. Penggunaan biopolimer sebagai bahan organik memiliki tantangan tersendiri yaitu sifatnya yang sangat sensitif terhadap air dan mengalami biodegradasi. Pada penelitian ini, sifat sensitif terhadap air akan coba dikurangi dengan mencampur sampel pasir silika dengan lilin lebah (beeswax) yang bersifat hidrofobik dan biopolimer yang digunakan adalah glukomanan. Selain itu, metode pencampuran sampel pada kondisi basah dan kondisi kering juga ditinjau untuk memperoleh metode yang lebih baik untuk pencampuran sampel. Hasil uji laboratorium menunjukan peningkatan nilai kohesi sebesar 264,8 kPa dan sudut geser dalam sebesar 44,7 ̊ serta nilai Undrained shear strength sebesar 525,8 kPa dari uji kuat tekan bebas dengan komposisi biopolimer 2 % glukomanan ditambah 2 % lilin lebah. Komposisi biopolimer yang seimbang antara glukomanan dan lilin lebah, suhu pemanasan 110 ̊ C, dan metode pencampuran basah merupakan kondisi yang paling optimal dalam pembuatan sampel uji.
Effect of Compressive Strength of Red Brick with the Addition of Carrageenan Nofriadi; Dary, Rhini Wulan; Oktaviani, Tetra; Putri, Wirdatun Nafiah; Putra, Heriansyah
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 3 No. 4 (2024): IJRVOCAS - Special Issues - International Conference on Science, Technology and
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v3i4.82

Abstract

Red brick is one of the building materials used to make building walls. Red bricks are made from clay and can be mixed using additives. The use of clay has the most composition in the red brick mixture. Adding addictive materials is an effort that many researchers have made to improve the quality of red bricks. In this study, researchers were interested in using carrageenan as a mixture of red bricks. The research was carried out experimentally in the laboratory by making brick samples measuring 5 cm x 5 cm x 5 cm with various mixtures of BMC (control), BMK5 with the addition of 5% carrageenan, BMK10 with the addition of 10% carrageenan, and BMK15 with the addition of 15% carrageenan with drying temperature 50°C, 100°C, and 150°C for 24 hours.Research data was obtained through an experimental process of testing the compressive strength of red bricks using a compression test equipment. The data obtained was processed to obtain the compressive strength value of the red brick. The results showed that addition of 5% of the carrageenan mixture had an effect on the compressive strength of the red brick. Addition of 5% carrageenan contributed to the increase in the compressive strength of the red brick. There was a decrease in the compressive strength of the red brick in the sample with the percentage of addition carrageenan by 10% and 15 %. The ideal drying temperature for a mixture of red bricks with carrageenan is at 50℃ for 24 hours.
Pengaruh Penambahan CaCO3 terhadap Parameter Kuat Geser Pasir Pantai Tri Julianto, Baskoro; Ramadhan, Fathur; Fauzan, Muhammad; Putra, Heriansyah
Jurnal Teknik Sipil dan Lingkungan Vol. 8 No. 3: Desember 2023
Publisher : Departemen Teknik Sipil dan Lingkungan, IPB University and The Institut of ENgineering Indonesia (PII), Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jsil.8.03.233-239

Abstract

Tanah pasir merupakan salah satu jenis tanah yang memiliki sifat mekanik yang baik. Namun, tanah pasir dapat menjadi mimpi buruk bila dalam kondisi jenuh serta terbebani secara siklik terus-menerus. Kondisi seperti ini dapat memicu terjadinya potensi likuefaksi. Upaya penambahan bahan aditif sebagai upaya perbaikan tanah banyak dilakukan untuk meminimalkan dampak dari potensi likuefaksi tersebut. Penelitian ini melakukan upaya peningkatan kuat geser pasir pantai dengan menambahkan CaCO3 Teknis sebagai upaya perbaikan dan stabilisasi tanah. Pasir pantai yang digunakan merupakan pasir dengan gradasi buruk yang dapat dibuktikan dari nilai Koefisien Derajat Keseragaman (Cc) sebesar 0,90 dan nilai Koefisien Kelengkungan (Cu) sebesar 4,00. Selain itu, dilakukan juga pengujian sifat fisis lain berupa pemeriksaan kadar air, pemeriksaan berat isi kering, pemeriksaan berat isi basah, pemeriksaan berat jenis butir, pemeriksaan angka pori serta pemeriksaan porositas. Sampel diberi perlakuan berupa penambahan CaCO3 dengan dosis sebanyak 10% dan 20%. Hasil pengujian laboratorium yang telah dilakukan menunjukkan peningkatan nilai parameter kuat geser tanah yang disajikan dalam bentuk model persamaan linear serta memperlihatkan perubahan nilai parameter kuat geser pasir berupa sudut geser dalam dan kohesi secara berturut-turut dengan nilai sebesar 25,82% dan 25,00% untuk sampel dengan dosis CaCO3 sebesar 10% serta 54,43% dan 250,00% untuk sampel dengan dosis CaCO3 sebesar 20%.
Schiff Base Synthetic Coating from The Chitosan Acylation of Green Mussel Shell (Perna viridis) as A Corrosion Inhibitor in Reinforcing Steel Lukvy, Wisely; Yuwono, Arief Sabdo; Putra, Heriansyah
Jurnal Teknik Sipil dan Lingkungan Vol. 9 No. 1: April 2024
Publisher : Departemen Teknik Sipil dan Lingkungan, IPB University and The Institut of ENgineering Indonesia (PII), Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jsil.9.1.51-60

Abstract

Reinforced concrete is widely used in construction implementation in Indonesia. The use of reinforcing steel as a structural material has the potential to experience corrosion. A Schiff base is one of the compounds considered a potential corrosion inhibitor. Green mussel (Perna viridis) contains chitosan which can produce chitosan Schiff base. This study aimed to analyze chitosan, Schiff base, optimum inhibitor concentration, and morphological structure. This research consisted of extraction and acylation transformation stages, corrosion rate measurement, and SEM testing. This research resulted in the degree of deacetylation of chitosan from the FT-IR spectra of 53.71%. Chitosan Schiff base from green mussel shells was successfully synthesized as much as 188.41 g. The optimum corrosion rate is found at the inhibitor concentration of 1500 ppm, with the highest efficiency level of 91.84%. The results of SEM testing on treated steel samples yielded fewer corrosion products in the form of uniform corrosion and pitting corrosion than untreated steel samples. This result shows that the chitosan Schiff base inhibitor from the optimum concentration of green mussel shells effectively inhibits the corrosion rate.
Campus Setting as Living Labs: Lessons from IPB University, Bogor, Indonesia Satria, Arif; Slamet, Alim Setiawan; Kosasih, Akhmad; Purwito, Agus; Siregar, Iskandar Z; Putra, Heriansyah
Journal of Sustainability Perspectives Vol 3: Special Issue 2023
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jsp.2023.20712

Abstract

IPB University in Bogor, Indonesia, has developed its campuses as living laboratories for education, research, community outreach, innovation, and business. The university's infrastructure under the living lab concept, such as forestlands, farmlands, wetlands, teaching factories, and business units, offer real-life opportunities for students and staff to create greater impacts to societies from their academic activities. This paper presents the lessons learned from IPB's campus setting as a living lab, focusing on how students and stakeholders can learn from the existing infrastructure and facilities, how research can benefit from a natural setting, and how the campus can serve as a model for sustainable living. Implementing living lab concept faces challenges as other new initiatives, particularly on the aspects of effective interdisciplinary works, formalizing the community of practices in which pool of experts are organized and knowledge management system is developed. In conclusion, in the era of emancipated learning implementation in Indonesia, IPB University's campus setting could provide a platform for facilitating activities related to science-practices/policy interface.
Campus Setting as Living Labs: Lessons from IPB University, Bogor, Indonesia Satria, Arif; Slamet, Alim Setiawan; Kosasih, Akhmad; Purwito, Agus; Siregar, Iskandar Z; Putra, Heriansyah
Journal of Sustainability Perspectives Vol 3: Special Issue 2023
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jsp.2023.20712

Abstract

IPB University in Bogor, Indonesia, has developed its campuses as living laboratories for education, research, community outreach, innovation, and business. The university's infrastructure under the living lab concept, such as forestlands, farmlands, wetlands, teaching factories, and business units, offer real-life opportunities for students and staff to create greater impacts to societies from their academic activities. This paper presents the lessons learned from IPB's campus setting as a living lab, focusing on how students and stakeholders can learn from the existing infrastructure and facilities, how research can benefit from a natural setting, and how the campus can serve as a model for sustainable living. Implementing living lab concept faces challenges as other new initiatives, particularly on the aspects of effective interdisciplinary works, formalizing the community of practices in which pool of experts are organized and knowledge management system is developed. In conclusion, in the era of emancipated learning implementation in Indonesia, IPB University's campus setting could provide a platform for facilitating activities related to science-practices/policy interface.
Managing Green Space to Achieve Sustainability of Infrastructure at IPB University Putra, Heriansyah; Hidayat, Febrian R; Sutoyo, Sutoyo; Qayim, Ibnul; Utami, Anisa D; Slamet, Alim S
Journal of Sustainability Perspectives Vol 4, No 1: June 2024
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jsp.2024.24790

Abstract

IPB University, Indonesia, has 18 campuses and is designed as a sustainable university. With a total area of 1669 Ha, IPB University has been beneficial in managing the massive area of campus site infrastructure. Managing the infrastructure development that considers the open space, including the forests, planted vegetation, and the ground surface for water absorption, is essential to achieve the sustainability of the infrastructure at IPB University. This paper presents the lessons learned from IPB University's campus setting in managing infrastructure development, focusing on developing open space, forests, and planted vegetation. Managing infrastructure development on campus to support the increasing number of students and the development of education, research, and campus activities faces various challenges. For this, IPB University provides a master plan as a policy and control system to ensure that all developed infrastructure has the goal of supporting campus activities and is highly considered for the sustainability of open spaces on campus.
Toward a Vision of Sustainable University: Linkages between Commitment and Practices Qayim, Ibnul; Utami, Anisa Dwi; Putra, Heriansyah; Slamet, Alim S; Mardiana, Rina; Dwiyanti, Fifi Gus
Journal of Sustainability Perspectives Vol 4, No 1: June 2024
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/potensi.%Y.24793

Abstract

Sustainability management plays a significant role in higher education. Development of a sustainable university involves integrating environmental, social, and economic considerations into various aspects of its operations, including campus infrastructure, curriculum, research, and community engagement. This urgently requires a strong commitment as a driving force behind sustainable initiatives, guiding actions, decisions, and investments toward achieving sustainability goals. IPB University as one of the most prominent universities in Indonesia is not only committed to becoming a sustainable university but also consistent in developing strategic plans to pursue its vision. Guided by this vision, IPB University has specifically established the Sustainable Campus Development Office (SCDO) to devise comprehensive sustainability plans outlining its goals, targets, and strategies for reducing environmental impact, promoting social equity, and ensuring economic viability. While it is still on progress, this commitment has played a significant role in encouraging sustainability practices at the university. It provides a foundation for leadership, governance, resources allocation, curriculum integration, student engagement, community partnerships, monitoring, reporting, and continuous improvement toward achieving sustainability goals. In addition, the university has established several sustainability values as guidance and indicators for maintaining sustainable practices. Integrating values and commitment is thus critical to realizing sustainable practices from generation to generation.
Peningkatan Kualitas Material Endapan dengan Penggunaan Etanol pada Metode SCU-CP sebagai Upaya Perbaikan Tanah Maulasih, Resti; Putra, Heriansyah; Hendra Prasetia, Hendra Prasetia
Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik Vol 23 No 2 (2024): Jurnal Teknik - Media Pengembangan Ilmu dan Aplikasi Teknik
Publisher : Fakultas Teknik - Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55893/jt.vol23no2.670

Abstract

Penggunaan konsentrasi kedelai yang tinggi dalam metode calcite precipitation dapat meningkatkan kadar organik. Kadar organik dapat diturunkan dengan menggunakan etanol pada rentang 20%-30% sehingga pengaruh perbedaan konsentrasi kedelai dan etanol perlu dievaluasi untuk mendapatkan endapan material CaCO3 dengan kualitas terbaik. Evaluasi dilakukan dengan menggunakan parameter laju hidrolisis, pengendapan CaCO3, serta kuantifikasi massa CaCO3 dan bentuk mineral yang terbentuk. Penggunaan etanol 20% pada konsentrasi kedelai 60 g/L menunjukkan hasil terbaik dengan nilai laju hidrolisis sebesar 1547 U/g dan nilai tersebut cukup dekat dengan nilai laju hidrolisis urease komersial Kishidan 2 g/L. Selain itu, massa CaCO3 yang terbentuk sebesar 2,97 g dengan jumlah kalsit lebih tinggi dibanding vaterit dan aragonit. Massa organik yang tidak larut pada larutan kedelai dengan etanol lebih sedikit daripada variasi tanpa etanol. Hal ini berkaitan dengan penggunaan supernatan yang menurunkan jumlah kadar organik. Turunnya kadar organik mempengaruhi turunnya jumlah endapan CaCO3. Bentuk endapan yang terbentuk pada kristal kalsit (rhombohedral) menjadi bentuk terbaik dalam mengikat tanah sehingga dapat meningkatkan kekuatan tanah.
Managing Green Space to Achieve Sustainability of Infrastructure at IPB University Putra, Heriansyah; Hidayat, Febrian R; Sutoyo, Sutoyo; Qayim, Ibnul; Utami, Anisa D; Slamet, Alim S
Journal of Sustainability Perspectives Vol 4, No 1: June 2024
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jsp.2024.24790

Abstract

IPB University, Indonesia, has 18 campuses and is designed as a sustainable university. With a total area of 1669 Ha, IPB University has been beneficial in managing the massive area of campus site infrastructure. Managing the infrastructure development that considers the open space, including the forests, planted vegetation, and the ground surface for water absorption, is essential to achieve the sustainability of the infrastructure at IPB University. This paper presents the lessons learned from IPB University's campus setting in managing infrastructure development, focusing on developing open space, forests, and planted vegetation. Managing infrastructure development on campus to support the increasing number of students and the development of education, research, and campus activities faces various challenges. For this, IPB University provides a master plan as a policy and control system to ensure that all developed infrastructure has the goal of supporting campus activities and is highly considered for the sustainability of open spaces on campus.
Co-Authors Achmad Hafidz Agus Purwito Akbar Renaldi Loebis Alfian Helmi Alifah Fidela Amigunani, Zahra Wajdini Amperanoto, Agus Ananda, Fauzan Raflinur Andes Ismayana Andra Ardiana Angga Prayoga Angie Irmajulianna Annisa Daniswara Apriadi, Apriadi Apriadi, Apriadi Ari Setiawan Arief Nugroho, Danang Arief Sabdo Yuwono Arif Satria Aryanti, Windy D Aswin Lim Athourrohman, Muhammad Aulia Andi Mustika Bella Yuliani Bilqist, Fitri W Budi Purwanto Budijanto Widjaja Daniswara, Annisa Debendra Neupane Devya Meisnnehr Devyan Meisnnehr Dian Hestiyantari Dimas Kharizmi Albar Dodik Ridho Nurrochmat Dwi Utami , Anisa Eka Putra, Reza Erizal Erizal , Erizal . Erizal Erizal Fadla Salma Fitriyah Faiq, Muhammad F Fauzan Subeantoro Fazrina Andriani Sakinah Lubis Febrianto, Ari Febrita, Joana Fifi Gus Dwiyanti Fikha Raihani Filipus Gianus Sutanto Giri Rasyidpradana Ganda Hafidz, Achmad 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 Lamuse, Maulina Larasaty Layla Alifani Ekrep Loebis, Akbar Renaldi Lofianda, Luthfi Lukvy, Wisely Luthfi Lofianda Maria Evita Maulasih, Resti Meti Ekayani Mitra Djamal Moch Ridwan Widiansyah Mochammad Izzudin Ma’mun Mochammad Zhafran Ichsan Maharama Moh Yasin Mohammad Hamdun 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 Nurul Chairunnisa Nyoto Santoso Oktafiani, Pradyta Galuh Oktafiani, Pradyta Galuh Oktaviani, Tetra Praditya, Meindika R Prawira, Gilang Indracakti Purwo Mahardi Putri Zafira, Aura Putri, Risky Sherly Putri, Wirdatun Nafiah Putri, Zenia Dwi Rahman, Muhamad Raffi Rahmawan, Rama Zaky Rai Sita Ramadhan, Fathur Ramadhanis, Zainab Ramadhanis, Zainab Dwi Regina Aprilia Zulfikar Retna Apsari Rhini Wulan Dary Rifnadhi, Bayu RIKA RAFFIUDIN Rina Mardiana Riska Aulia Putri Risky Sherly Putri Risky Sherly Putri Risma Amelia Rizki Amelia Rosyadah, Rani Rukmana, Adi Sari, Windi Mayang Satyanto Krido Saptomo Shahilla Larasaty Slamet, Alim S Slamet, Alim Setiawan Suryanto, Wiwit Sutoyo Sutoyo Sutoyo Sutoyo Syamsul Arifin Syifa Aulia Tri Sudibyo Triyogo Aleksandria Umam, Faqih Nadiya Utami, Anisa D Utami, Anisa Dwi Utami, Annisa Dwi Wahyu Srigutomo Wahyudi Wahyudi Wigo Ardhana WINDRA PRIAWANDIPUTRA, WINDRA Yasminna Dhiya Ulhaq Yasuhara, Hideaki Yudi Chadirin Yuli Suharnoto Zaenal Abidin Zalfa Maulida Ihsani