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All Journal JTT (Jurnal Teknologi Terpadu) Potensi : Jurnal Sipil Politeknik Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Komposit : Jurnal Ilmu-Ilmu Teknik Sipil Journal of Applied Civil Engineering and Infrastructure Technology (JACEIT) Kontribusi: Jurnal Penelitian dan Pengabdian Kepada Masyarakat Journal of Civil Engineering and Vocational Education
Utomo, Gunaedy
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Engineering Environmental Science Health Professions Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

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Pengaruh Plastik Polietilena Tereftalat Sebagai Perekat Terhadap Kuat Tekan Paving Block Anggraeni, Rosalin Delia; Indriyani, Andi Marini; Utomo, Gunaedy
Jurnal Teknologi Terpadu Vol 13, No 1 (2025): JTT (Jurnal Terpadu Terpadu)
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32487/jtt.v13i1.2310

Abstract

Seiring dengan pertumbuhan populasi dan meningkatnya kebutuhan manusia, jumlah sampah yang dihasilkan juga semakin bertambah, terutama sampah plastik yang sulit terurai secara alami. Salah satu cara untuk mengurangi volume sampah plastik adalah dengan melakukan daur ulang. Salah satu metode untuk memanfaatkan sampah plastik PET adalah dengan menjadikannya sebagai bahan campuran pada pembuatan paving block. Penelitian ini bertujuan untuk menilai efektivitas penggunaan sampah plastik sebagai pengganti sebagian semen dalam campuran paving block. Penelitian ini mencakup uji kuat tekan sesuai standar SNI 03-0691-1996 pada paving block yang mengandung plastik PET. Metode penelitian ini adalah eksperimen di laboratorium Teknik Sipil Universitas Balikpapan dengan komposisi campuran yang digunakan, yaitu 30% PET : 70% pasir, 40% PET : 60% pasir, dan 50% PET : 50% pasir. Hasil uji menunjukkan bahwa campuran 30% PET : 70% pasir menghasilkan kuat tekan rata-rata tertinggi sebesar 15,87 MPa, yang memenuhi standar mutu C dan cocok untuk penggunaan pejalan kaki. Sementara itu, campuran 50% PET : 50% pasir menghasilkan kuat tekan rata-rata sebesar 10,0 MPa, yang termasuk dalam mutu D dan sesuai untuk taman serta penggunaan lainnya.
Pengaruh Temperatur Pelelehan Plastik Polypropylene Terhadap Kuat Tekan Paving Block arlita, reggina gita; Utomo, Gunaedy; Indriani, Andi Marini
Jurnal Teknologi Terpadu Vol 13, No 1 (2025): JTT (Jurnal Terpadu Terpadu)
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32487/jtt.v13i1.2311

Abstract

Plastik banyak digunakan dalam kehidupan sehari-hari, sehingga penggunaannya dalam masyarakat modern mengalami peningkatan yang pesat. Plastik mempunyai keunggulan seperti kuat, ringan, dan stabil, namun sulit terurai oleh mikroorganisme dalam lingkungan. Penelitian ini bertujuan untuk mengetahui pengaruh temperatur pelelehan plastik polypropylene pada pembuatan paving block, serta menentukan temperatur optimum untuk pembuatan paving block menggunakan plastik polypropylene sebagai bahan perekat. Metode penelitian yang digunakan adalah eksperimen dengan komposisi komposisi 10% PP : 90 % Pasir , 20% PP : 80 % Pasir, 30% PP : 70 % Pasir Hasil menunjukkan bahwa temperatur optimal untuk kuat tekan tertinggi berada pada 240°C pada semua komposisi, dengan nilai kuat tekan masing-masing 6,11 MPa, 6,98 MPa, dan 7,70 MPa. Pada temperatur 260°C, kuat tekan mengalami penurunan signifikan karena pengaruh suhu tinggi yang mengurangi daya ikat plastik terhadap pasir. Penurunan ini disebabkan oleh perubahan sifat material pada suhu yang lebih tinggi, yang mengurangi kemampuan plastik PP sebagai pengikat pasir.sehingga tidak masuk kedalam mutu paving block sesuai dengan SNI 03-0691 (1996).
Analisis Daya Serap Air Paving Block Dengan Polyethylene Terephthlate Sebagai Pengganti Semen Al Hidayat, Fauzi; Indriani, Andi Marini; Utomo, Gunaedy; Harami, Fachruddin
Journal of Applied Civil Engineering and Infrastructure Technology Vol 6 No 2 (2025): Desember 2025
Publisher : Indonesian Society of Applied Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52158/jaceit.v6i2.1004

Abstract

Plastic waste is one of the main challenges faced by Indonesian society. Plastic drinking bottles are one of the largest sources of waste, and it is estimated that the total amount of plastic waste worldwide will reach 12,000 million tons by 2050. So there needs to be an effort to recycle the plastic. In this study, PET plastic was used as a substitute for cement in paving blocks. The purpose of this research is to evaluate whether paving blocks using a mixture of PET plastic and sand can meet the requirements of water absorption according to SNI 03-0691-1996 standard. The comparison between PET plastic and sand is 10%: 90%, 20% : 80%, 30% : 70%, 40% : 60%, 50% : 50%, with temperatures of 240°C, 260°C, 280°C. The absorption of paving blocks by utilizing Polyethylene Terephtalate (PET) plastic as a substitute for cement decreased as the PET plastic increased. The lowest absorption was found in the 30% variation at 280°C with a value of 0.18%. The 10% plastic variation at each different temperature obtained more than 10% absorption, where the results did not meet the quality of SNI 03-0691 (1996). While the addition of 20%, 30%, 40% and 50% plastic obtained a value below 1% which means it meets the quality of A in SNI 03-0691 (1996).
Pengaruh Penambahan Fly Ash Terhadap Nilai Koefisien Permeabilitas Tanah Lempung Organik Fauzi, Muhammad Muis; Indriani, Andi Marini; Utomo, Gunaedy
Journal of Applied Civil Engineering and Infrastructure Technology Vol 6 No 2 (2025): Desember 2025
Publisher : Indonesian Society of Applied Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52158/jaceit.v6i2.1005

Abstract

The role of soil is very crucial and is always closely related to infrastructure development. This is because soil functions as the basis for building construction, serving to receive and support the structural loads placed on it. In high rainfall weather conditions, the surface of the slope is susceptible to landslides. Landslides occur due to excessive water infiltration, causing the soil to become weak and collapse. To prevent landslides, efforts need to be made to reduce soil infiltration or permeability. The purpose of this study was to determine the characteristics of the addition of Fly Ash to the permeability of organic clay soil and to determine the optimum composition of the addition of Fly Ash to reduce the permeability coefficient value. The addition of variations in the percentage of Fly Ash was 8%, 16%, and 24% with a curing period of 3 days, 14 days, and 28 days. The test results obtained with the addition of 24% Fly Ash resulted in a decrease in the permeability coefficient value of 84.08% against untreated soil. It can be concluded that the use of Fly Ash can be used as a soil stabilization material, especially in permeability testing.
Comparative Analysis of Bearing Capacity of Pile Foundation Using Van Der Ween, Philipponnat, and Meyerhof Methods Hidayatullah, Muhammad Fitrah; Indriani, Andi Marini; Utomo, Gunaedy
CIVED Vol. 10 No. 3 (2023): September 2023
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/cived.v10i3.3

Abstract

Soil has different characteristics so that it becomes a lot of problems in Civil Engineering construction, especially in foundation planning, it must be done carefully and use several methods as a comparison. This research is to compare the three methods of calculating the bearing capacity of bored pile foundations: Van Der Ween, Phillipponnat, and Meyerhof. The selection of an apposite method in bearing capacity analysis is important to confirm the safety of the building structure. The Van Der Ween Method is a more modern and detailed approach compared to the Meyerhof Method, it takes into account the negative impact of the lateral deformation of the pile, which improves the accuracy of its calculation. The Philipponnat Method is a method that combines aspects of both the Meyerhof Method and the Van der Ween Method, it considers load characteristics and soil properties like Meyerhof, while also accounting for lateral deflection of the piles like Van der Ween. The results show that each method has advantages and disadvantages in determining the bearing capacity of bored pile foundations. Analysis revealed factors such as pile diameter, soil depth, and maximum applied load affect the accuracy of the three methods. This research provides important insights for construction planners in selecting a suitable method for bored pile foundation bearing capacity analysis. It is recommended that soil characteristics and pile geometry be considered before selecting the most appropriate calculation method. This research can be extended by considering other methods and conducting validation through experimental analysis.
Fireless Brick Making using Water Treatment Sewage Sludge with MICP Action Saputri, Evi Ari Ayu; Indriani, Andy Marini; Utomo, Gunaedy
CIVED Vol. 10 No. 3 (2023): September 2023
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/cived.v10i3.327

Abstract

Bricks materials used in making the walls of building. Currently, brick making has new innovations. As in this study using water treatment sludge waste and bacillus subtilis bacteria. Sludge waste done with percentage of 20% and bacillus subtilis bacteria much as 6%. The process adding bacteria called the Microbially Induced Calcite Precipitation (MICP) process. The process to increase compressive strength clay soil. The purpose study to determine effect of Bacillus subtilis bacteria on the strength bricks using mud and the strength of bricks with bacterial reinforcement. The results showed the compressive strength did not the specifications, where value of the compressive strength of bricks in accordance with SNI 15-2094-2000 is 50 kg / cm². And results of compressive strength only amounted to 22.82 kg / cm² in the 28-day curing period. For compressive strength using mixture of bacteria produces highest strength value the 4-day culture period of 28.11 kg kg/cm².
Pengaruh Microbially Induced Calcite Precipitation (MICP) terhadap Perilaku Kuat Geser Tanah Terkontaminasi Batubara Indriani, Andi Marini; Utomo, Gunaedy
CIVED Vol. 10 No. 1 (2023): March 2023
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/cived.v10i1.362112

Abstract

Microbially induced calcite precipitation (MICP) adalah teknik perbaikan tanah dengan menggunakan mikroorganisme yang mampu mengubah dan meningkatkan sifat mekanik dan fisik. Dalam penelitian ini, uji geser langsung dengan mengacu pada standard SNI 03-3420-1994 digunakan untuk mengetahui pengaruh pengendapan calcite terhadap perilaku kuat geser tanah terkontaminasi batubara. Bakteri Bacillus subtilis sebanyak 6% ditambahkan ke dalam tanah yang terkontaminasi 5%, 10% dan 15% batubara. Bakteri yang digunakan menggunakan kultur 3 hari dimana berada pada fase stasioner. Hasil penelitian menunjukkan bahwa terjadi peningkatan yang cukup baik terhadap nilai kohesi dan sudut geser dalam sebagai parameter kuat geser setelah masa pemeraman. Stabilisasi MICP pada tanah terkontaminasi 5% batubara meningkatkan kuat geser sebesar 3 kali lipat sedangkan pada tanah terkontaminasi 10% dan 15% batubara terjadi peningkatan kuat geser masing-masing sebesar 7 dan 15 kali lipat dibandingkan dengan tanah asli.
Pengaruh Siklus Basah Kering terhadap Perilaku Mekanik Tanah Lempung Stabilisasi Biosementasi dengan Bakteri Bacillus Subtilis Indriani, Andi Marini; Utomo, Gunaedy; Syahputra, M Ryan
CIVED Vol. 10 No. 2 (2023): June 2023
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/cived.v10i2.399

Abstract

Tanah lempung mempunyai daya dukung sangat kecil sehingga banyak menjadi masalah pada pekerjaan di bidang Teknik Sipil terutama pada negara dengan 2 musim seperti Indonesia. Siklus basah kering akibat perubahan musim ini tentu akan menyebabkan perubahan pada daya dukung tanah. Pada musin panas biasanya daya dukung cukup tinggi tetapi dimusim hujan daya dukung akan sangat rendah. Perkembangan metode stabilisasi tanah semakin baik dengan munculnya beberapa ide inovatif salah satunya dengan metode stabilisasi menggunakan mikroorganisme yang dikenal dengan istilah biosementasi. Tetapi metode ini harus terus dikaji terutama pengaruh siklus basah kering terhadap perubahan nilai CBRsoaked tanah lempung. Salah stu jenis mikroorganisme yang mampu menghasilkan CaCO3 yang dapat meningkatkan daya dukung tanah adalah bakteri Bacillus Subtilis. Penelitian yang dilakukan dengan menerapkan metode curing yang berbeda dimana tanah diperam selama 14 hari dengan metode soaked yaitu dikeringkan selama 10 hari dan direndam selama 4 hari, Metode 1 Siklus A dengan cara di rendam selama 6 hari kemudian dikeringkan selama 8 hari dan metode 1 siklus B di keringkan selama 6 hari lalu dilakukan perendaman selama 6 hari dan dikeringkan selama 2 hari baru di uji untuk mengetahui perubahan sifat mekanis tanah California Bearing Ratio (CBR) dengan variasi campuran bakteri umur kultur 1 hari sebanyak 3%, 4.5% dan 6%. Hasil pengujian menunjukkan metode Soaked lebih baik dibandingkan metode 1 Siklus A dan B. Terjadi peningkatan nilai CBR dibandingkan dengan tanah asli dimana dengan metode Soaked meningkat hingga 5 kali lipat, metode 1 Siklus A sebersar 89% sedangkan metode 1 Siklus B hanya meningkat 15%.
Influence Utilization Waste Plastic Polyethylene Terephthalate on the Flexural Strength of Concrete with Use East Kalimantan Aggregate Damayanti, Dinda Indah; Indriani, Andi Marini; Utomo, Gunaedy
CIVED Vol. 10 No. 3 (2023): September 2023
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/cived.v10i3.443

Abstract

Environmental pollution is still an issue that cannot be ignored. This type of waste causes environmental pollution due to its large and difficult to be recycled is Polyethylene Terephthalate (PET) plastic. So it is important to make an effort to utilize the plastic. On the other hand in the world of construction, the use of concrete increases every day causing the need for many new material sources in order to cover the needs of concrete mixtures. One of the abundant sources of aggregate is East Kalimantan aggregate but has not been used much. so combining East Kalimantan aggregate and PET plastic as a concrete constituent material becomes interesting to be analyzed, especially to determine the characteristics of the flexural strength of concrete. The flexural strength is based on SNI 03-4431-2011 method and tested at the age of 14 and 28 days. PET plastic chopped to a size of 5 cm long and 1-3 mm wide with variations 0.5%; 0.65%; and 0.8% of the weight of sand. The total number of samples is 24 blocks size of 15 × 15 × 60 cm. The results indicate that the flexural strength characteristics of concrete using local East Kalimantan aggregates and using PET plastic as a partial substitute for fine aggregate increased as the number of PET substitutions. Concrete without PET plastic has 3.187 MPa. In comparison with to normal concrete, 0.5% PET substitution increased by 3.07%, 0.65% PET variation increased by 3.63% and 0.8% PET variation increased by 4.32%.
Construction of Temporary Landfill Shield by Utilizing MICP Stabilized Water Treatment Plant Sludge Waste Natasya, Priskha Tri; Indriani, Andi Marini; Utomo, Gunaedy
CIVED Vol. 10 No. 3 (2023): September 2023
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/cived.v10i3.478

Abstract

The addition of Bacillus Subtilis bacteria to the mud soil at IPAM (Integrated Wastewater Treatment Plant) Perumda Tirta Manuntung Km.8 in Balikpapan City aimed to enhance its suitability as a temporary cover layer in places like landfills. Initial mud testing revealed key characteristics: Chemical Characteristics: The mud's specific chemical composition was identified, providing a foundation for a deeper understanding of its properties. Physical Characteristics: The mud falls into the fine-grained soil category, with 63% of particles passing through a No. 200 sieve. Moisture content is high at 42.54%, primarily composed of silt (39.8%) and clay (25%). Mechanical Characteristics: Standard proctor tests yielded a maximum dry unit weight of 1.099 gr/cc and an optimum water content of 33.65%. Initial soil permeability met temporary landfill cover criteria, with a permeability value of 5.04×10-4 cm/s. Further research demonstrated that by introducing Bacillus Subtilis bacteria at varying concentrations and incubation periods, mud permeability could be altered. The highest permeability, 4.27×10-4 cm/s, was achieved with an 8% bacteria concentration and a 7-day incubation period, while the lowest permeability, 1.19×10-5 cm/s, resulted from an 8% bacteria concentration and a 28-day incubation period. These findings suggest that Bacillus Subtilis addition can modify mud permeability, making it more suitable as a temporary landfill cover. This presents a potential solution for more effective IPAM management.
Co-Authors Al Hidayat, Fauzi Amirudin Amirudin Andi Marini Indriani, Andi Marini Anggraeni, Rosalin Delia arlita, reggina gita Az’Zahrah, Yuninda Casmudi, Casmudi Damayanti, Dinda Indah Delia, Rosalin Fauzi, Muhammad Muis Harami, Fachruddin Hidayatullah, Muhammad Fitrah Ikram, Muhammad Fadhli Dzil Indriani, Andy Marini Indriyani, Andi Marini Khoiriyah, Dewi Isroul Kusuma, Santos Surya Marini Indriani, Andi Maslina Maslina, Maslina Natalia Natalia Natasya, Priskha Tri Ochtharima, Zaerima Zahira Ramadhan, Atma Haical Sani, Abdu Saputri, Evi Ari Ayu Syahputra, M Ryan Tesiana, Selina Vetryx, Vanessa Regina Yacub, Muh Alpian