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All Journal IPTEK Journal of Proceedings Series Civil Engineering Journal Jurnal Penelitian Enjiniring Fakultas Teknik Unhas Prosiding Seminar Nasional Teknik Sipil UMS
Tri Harianto
Departemen Teknik Sipil, Fakultas Teknik, Universitas Hasanuddin
Civil Engineering, Building, Construction & Architecture Computer Science & IT Engineering

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Preloading Model on Soft Soil with Inclusion Thermal Induction Vertical and Incline Types Panjaitan, Maraden; Djamaluddin, A. R.; Harianto, Tri; Muhiddin, A. B.
Civil Engineering Journal Vol 7, No 6 (2021): June
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/cej-2021-03091705

Abstract

Soft clay has a relatively low subgrade bearing capacity. The aim is to obtain physical values, mineralogy, mechanical strength values, values for reduction. The research method used is preloading in a test tube measuring 50×70×150 cm. Each cycle of preloading and thermal induction used a fixed load of 0.015 kg/cm². Thermal induction is given vertically and obliquely with temperature variations of 100, 200, 300, and 400 °C. The main observation point is a distance of 15 cm from the center of the induction. At 400 °C inclined induction, the water content is 17.36% (from the initial water content of 59.07%), the soil cohesion is 21.75. kN/m², the value of unconfined compressive strength is 67.72 kN/m², the highest modulus of elasticity is 4593 kN/m2, and the decrease is 5.13 cm. XRD, SEM, EDS results before heating showed mineralogy 0 (65.06%), Ca (13.30%), Na (3.64%), Mg (2.15%), Al (6.63%), Si (8.52%), Sn (0.70%) and did not change significantly after heating at 400 °C. The results after heating included 0 (58.39%), Ca (14.09%), Na (0.72%), Mg (1.16%), Al (6.63%), Si (14.72%), Sn (2.54%). The novelty obtained is to change very soft conditions became medium conditions. Doi: 10.28991/cej-2021-03091705 Full Text: PDF
Slope Reinforcement Model Scale Test With X-Block Karapa, Enos; Harianto, Tri; Muhiddin, A. B.; Irmawaty, Rita
Civil Engineering Journal Vol 8, No 3 (2022): March
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2022-08-03-014

Abstract

This study aims to determine the material composition and dimensions of X-block, develop a slope reinforcement model using X-block, evaluate the mechanical behavior of slopes that are reinforced with rock-bound by X-block, and analyze the performance of slope reinforcement using X-block. This research was conducted at Hasanuddin University's soil mechanics and civil engineering structure laboratory. The model scale test was employed in this study. The geometrical speciation of the test box is 150 cm in length, 60 cm in width, and 100 cm in height. The X-block model was produced using concrete with a FC of 25 MPa. The X-block was divided into two types: X-block type 1 and X-block type 2. Tensile strength testing is performed on the X-block. The slopes are made of clay soil and have a slope angle of 70 degrees. The loading test was conducted in three stages: without block, with X-block type 1, and with X-block type 2. The loading test uses a hydraulic pump equipped with a load cell and LVDT. The tensile strength of X-block type 1 is 2.56 MPa, whereas X-block type 2 has a tensile strength of 4.35 MPa. The development of the type X-block design, which is used as a retaining wall material, has shown that it can effectively withstand landslides on the slopes under consideration. The slope safety factor rose dramatically after being reinforced with type X-blocks, reaching 2.73 for both X-block type 1 and X-block type 2. Doi: 10.28991/CEJ-2022-08-03-014 Full Text: PDF
Pengaruh Intensitas Curah Hujan dan Kemiringan Lereng terhadap Erosi yang Berpotensi Longsor Farid Sitepu; Mary Selintung; Tri Harianto
Jurnal Penelitian Enjiniring Vol 21 No 1 (2017)
Publisher : Center of Techonolgy (COT), Fakultas Teknik, Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (355.299 KB) | DOI: 10.25042/jpe.052017.03

Abstract

Wilayah Indonesia yang berada pada belahan dunia yang memiliki iklim hujan tropis menyebabkan bervariasinya intensitas curah hujan. Intensitas curah hujan akan sangat berpengaruh pada kestabilan tanah sebagai dasar pondasi sebuah struktur sipil. Dalam penelitian ini ditinjau pengaruh intensitas curah hujan dan kemiringan lereng dalam upaya pencegahan kerusakan struktur maupun kejadian bencana yang dapat ditimbulkan. Dilakukan pengujian laboratorium dengan menggunakan metode pembanding Universal Soil Loss Equation untuk menentukan besarnya erosi yang terjadi pada lereng tanah dengan kadar organik 18,67% dengan tingkat kepadatan 60% dan 70%. Dengan menggunakan Rainfall Simulator digunakan variasi intensitas hujan 23 mm/jam, 34 mm/jam dan 51 mm/jam diperoleh peningkatan nilai erosi tanah sebesar 40% dari intensitas tertinggi ke intensitas terendah. Dari faktor kemiringan lereng dimodelkan kemiringan 10o, 15o dan 20o dan didapatkan hasil peningkatan nilai erosi sebesar 3%.
Uji Pengaruh Energi Rapid Impact Compaction terhadap Tingkat Kepadatan Tanah Timbunan Rokhman Rokhman; Lawalenna Samang; Tri Harianto
Jurnal Penelitian Enjiniring Vol 23 No 1 (2019)
Publisher : Center of Techonolgy (COT), Fakultas Teknik, Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (662.293 KB) | DOI: 10.25042/jpe.052019.12

Abstract

Penelitian ini dimaksudkan untuk menganalisis pengaruh energi pemadatan metode Rapid Impact Compaction (RIC) terhadap karakteristik pemadatan pada tanah timbunan. Metode yang digunakan adalah model alat RIC hasil pengembangan di Laboratorium Mekanika Tanah Universitas Hasunuddin dimana alat ini di kendalikan secara elektro-mekanis. Proses pemadatan dilakukan dengan memvariasikan jumlah tumbukan untuk variasi energi pemadatan. Dimana berat beban penumbuk 70 kg dan tinggi jatuh 15 cm. Untuk uji elemen menggunakan mould berdiameter 15 cm dan tinggi 25 cm sedangkan uji model mengunakan bak uji berdiameter 80 cm dan tinggi 120 cm. Untuk menguji tingkat kepadatan menggunakan DCP Test, CBR Test dan Sandcone Test. Hasil pengujian mendapatkan adanya pegaruh energi pemadatan terhadap nilai CBR dan berat isi kering tanah. Hubungan antara perbandingan energi pemadatan RIC terhadap energi pemadatan standar proctor memenuhi persamaan ϒd RIC = 0,0915 (ESP) + 1,046. Dari grafik didapatkan titik perpotongan yang merupakan titik optimum energi RIC untuk mendapatkan kepadatan sesuai energi pemadatan proctor. Dalam pengujian ini didapatkan titik optimum energinya sebesar 2.01 ESP terhadap pemadatan standar proctor dan 3.32 ESP terhadap modified proctor. Pada pengujian pemadatan RIC model pada kumulatif jumlah tumbukan sebanyak 90 kali tanah tidak mengalami penurunan. Evaluasi kinerja hasil pemadatan RIC didapat nilai Relatif Compaction (Rc) sebesar 95 %.
Analysis Characteristic of Province Travelling Intercity of AKDP Makassar-Parepare Route, South Sulawesi St. Maryam Hafram; Herman Parung; Tri Harianto; Muh. Isran Ramli
IPTEK Journal of Proceedings Series Vol 1, No 1 (2014): International Seminar on Applied Technology, Science, and Arts (APTECS) 2013
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2014i1.219

Abstract

Intercity Transportation is a kind of transportation that connects one city to other cities that are still located in one provincial administrative region or province intercity, as well as located in the other provinces. province intercity service works in one route network and the road infrastructure as contained in the regulation route reguirement. The type and amount of Goods Mode In this study are Damri Bus, Minibus, BMA, and the types of MPU vehicles conprises of Panther, Kijang, Avanza etc. The purpose of this study is to analyse the travelling Charakteristics of AKDP that comprises of passenger and operator, travelling expense of AKDP, which is covering of passenger expense and operational vehicles cost (BOK) of Makassar-Pare pare route. The survey of data collection for passengers was done at the locations of departure and transit of province intercity transportation that is in Daya regional terminal and unofficial terminals in a number of departure points along Perintis Kemerdekaan Street up to the borders of Makassar, the base of public transportation of province intercity base located in Makassar suburban areas and the stopovers province intercity Barru and Parepare.
Elastisitas dan Rasio Poisson Campuran Tanah Laterit dan Kapur Padam (Ca(OH)2) Tribowo, Haris; Tjaronge, Muhammad Wihardi; Harianto, Tri
Jurnal Penelitian Enjiniring Vol 24 No 1 (2020)
Publisher : Center of Techonolgy (COT), Fakultas Teknik, Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jpe.052020.04

Abstract

Kondisi infrastruktur jalan darat yang tidak memadai menjadikan jalur udara sebagai andalan untuk pengangkutan orang dan barang, termasuk berbagai kebutuhan pokok di Papua. Penelitian ini bertujuan untuk mengetahui nilai modulus elastisitas dan poisson rasio yang telah distabilisasi dengan kapur menggunakan curing air dan udara selama 7 hari. Metode yang digunakan dalam penelitian ini adalah metode eksperimental di laboratorium. Dimensi benda uji yang digunakan adalah silinder ukuran 53 x 106 mm. Sampel tanah yang digunakan dalam penelitian stabilisasi tanah ini diambil dari Tanah Merah Kabupaten Bovendigul. Campuran tanah lempung dan kapur dibuat dengan menggunakan kadar air sebesar 35%. Hasil pengujian kuat tekan menunjukkan bahwa rata-rata nilai modulus elastisitas (vertikal dan horizontal) pada curing air dan udara adalah masing-masing sebesar 122,82 MPa; 92,23 MPa dan 51,11 MPa; 424,43 MPa. Sedangkan rata-rata nilai poisson rasio adalah masing-masing sebesar 0,66 μ dan 0,06 μ.
Study on Pull-Up Behavior of Double Fold Anchor with Field Full Scale Test Hendrawan, Agus J.; Harianto, Tri; Djamaluddin, A. R.; Muhiddin, Ahmad B.
Civil Engineering Journal Vol 10, No 12 (2024): December
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2024-010-12-012

Abstract

Several studies have been conducted on the use of anchors, including numerical analysis, experimental testing, and field-scale testing. These studies have provided insights into anchor behavior in terms of pull-up capacity and soil failure models under tensile loading. Specifically, for the use of anchors in cohesive or soft soils, it is possible to innovate by using anchor elements with various dimensional or surface area changes. This research aims to design anchors for cohesive soils that can be easily applied in the field and have high tensile capacity, determine the pull-up capacity of double-fold type ground anchors, and analyze the effect of the depth of double-fold anchors. The results of pullout and tensile capacity testing on double-fold anchors showed significant variations at each test location. At the first location, Sungai Kariango, high tensile capacity occurred at relatively shallow embedment depths, influenced by the type and bearing capacity of the soil at the test site. At the second location, although the soil was relatively soft, the tensile capacity was similar to the first location but with deeper embedment depths. At the third location, the consistency of soil type and soil strength at the two test points resulted in similar tensile capacities. This indicates that the type and strength, or bearing capacity, of the soil at the test site, as depicted by cone resistance parameters (qc), significantly affect the tensile capacity of the anchor. The better the soil strength and bearing capacity at the test site, the greater the tensile capacity of the anchor that can be achieved. A deep understanding of soil characteristics through CPT is essential in determining the design and embedment depth of anchors to achieve optimal tensile capacity. Through this research, it is expected to obtain optimal tensile capacity results for anchors and develop a double-fold type ground anchor model that is easy to install in the field, suitable for various structures with high tensile loads, and susceptible to uplift in soft soil layers. Doi: 10.28991/CEJ-2024-010-12-012 Full Text: PDF
The Performance of Geosynthetic Reinforcement Road Pavement Over Expansive Soil Subgrade Hairulla, .; Harianto, Tri; Djamaluddin, Abdul Rahman; Arsyad, Ardy
Civil Engineering Journal Vol 10, No 12 (2024): December
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2024-010-12-020

Abstract

One of the problems faced in infrastructure development, especially roads, is problematic soils, including expansive soils, which are distributed around 20% of national road construction in Indonesia. Geosynthetics are reinforcement materials that can be used to overcome problematic soils. The study aimed to determine the behavior of expansive soil with geosynthetic reinforcement against swelling potential and swelling pressure in the wetting cycle. The research utilized an experimental approach involving three test concepts. The first was a control test without reinforcement. The second included a combination of geogrid, geotextile, and geomembrane layers, while the third utilized an H2Rx reinforcement layer. Analysis was carried out on the development potential and pressure; the test was carried out for 57 days using displacement sensors and pressure sensors, and data recording was carried out every 5 seconds using a computer. The findings from the results of this study indicated that the presence of reinforcement using a geosynthetic reinforcement layer can overcome the behavior that occurs in expansive soils with swelling potential and swelling pressure. The novelty of this research is the inclusion of a geosynthetic reinforcement layer on expansive soil combined with a drainage layer in the pavement subgrade. Doi: 10.28991/CEJ-2024-010-12-020 Full Text: PDF
Examining the Erosion Resistance of Cement-Bentonite Barriers: Effects of Confining Pressure and GGBS Content Walenna, Muhammad A.; Royal, Alexander; Jefferson, Ian; Ghataora, Gurmel; Harianto, Tri; Arsyad, Ardy; Hanami, Zarah A.
Civil Engineering Journal Vol. 11 No. 6 (2025): June
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2025-011-06-08

Abstract

This study investigates the erosion resistance of cement-bentonite (CB) barriers, focusing on the role of varying levels of Ground Granulated Blast Furnace Slag (GGBS) content and confining pressure, crucial for infrastructure such as dams and levees. Employing a bespoke modified triaxial erosion testing setup, the research assesses how different confining pressures, GGBS proportions, and curing periods impact the erosion resistance of CB materials under varying stress conditions. Results demonstrate that increasing GGBS proportions enhances erosion resistance by improving the CB matrix microstructure, while higher confining pressures generally increase resistance. However, combinations of high confining pressure and erosive force can lead to barrier material failure, with buckling failure occurring at elevated pressures (100 kPa and above), highlighting a trade-off between enhancing erosion resistance and maintaining structural stability. Extended curing periods allow for material strength development, enhancing stability, yet delayed erosion phases at higher confining pressures and longer curing durations suggest gradual crack formation, potentially leading to hydraulic fracturing. This underscores the need for meticulous design considerations regarding load conditions due to significant failure modes such as buckling. The findings emphasize that the strategic combination of GGBS content, confining pressure, and curing period is crucial in optimizing barrier performance, highlighting the importance of selecting optimal material formulations and operational parameters to maximize erosion resistance and ensure the longevity and safety of civil engineering structures.
Pengaruh Induksi Panas terhadap Nilai Kuat Tekan Bebas Tanah Lunak pada Zona Radial Panjaitan, Maraden; Samang, Lawalenna; Muhiddin, Achmad Bakri; Harianto, Tri
Prosiding Seminar Nasional Teknik Sipil UMS 2019: Prosiding Seminar Nasional Teknik Sipil UMS
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (614.615 KB)

Abstract

Problem utama pembangunan infrastruktur pada tanah lempung lunak (soft soil) adalah daya dukung tanah dasarnya yang relatif. Metoda perbaikan yang tersedia adalah preloading dengan cara Prefabricated vertical drain, electro- osmosis, vacuum consolidation, lightweight fill, stone column, jet grouting, lime columns, fracture grouting, ground freezing, vitrification, electrokinetic treatment dan electroheating. Dalam metode penelitian ini dilakukan preloading dengan kombinasi heating. Lokasi Pengambilan sampel tanah lunak di Takalar-Sulawesi Selatan. Tujuan dari penelitian ini mendapatkan nilai hubungan kuat tekan bebas (unconfined compression test) dan korelasinya dengan temperatur dan beban pada tanah lunak. Selanjutnya mendapatkan nilai pengaruh kuat tekan bebas pada zona radial akibat diinduksi panas. Pada pengujian ini membuat variasi suhu mulai dari 1000 C, 2000 C, 3000 C ,sampai dengan 4000 C dan dan beban 0,20 kg/cm. Sampel yang diuji UCT pada zona radial yang sudah dimodelkan dengan radius 10 ,20 cm, 30 cm, 40 cm. Metode unconfined compression test (UCT) dengan temperatur 4000 menunjukkan hasil kuat tekan bebas pada radial Ro/center sebesar 0,467 kg/cm2dan pada R1 sebesar 0,250 kg/cm2, R2 sebesar 0,155 kg/cm2.Pada suhu 2000 C menunjukkan Ro/center sebesar 0,247 kg/cm2dan pada R1 sebesar 0,154 kg/cm2, R2 sebesar 0,107 kg/cm2. Hasil grafik tersebut kecenderungan pada titik tertentu akan sama pada temperatur dan radia yabg berbedal .Pengujian pemodelan ini menghasilkan kuat tekan bebas yang dapat dipakai menjadi parameter model pondasi pada tanah lunak dan terapannya bisa dipakai pada pondasi.
Co-Authors Abdul Rahman Djamaluddin Achmad Bakri Muhiddin Alkadri, A Antarissubhi, A Ardy Arsyad Dhani, Noor Djamaluddin, A. R. Djamaluddin, A. Rachman Djamaluddin, Rahman Djamluddin, Abdul Rahmad Farid Sitepu Ghataora, Gurmel Hairulla, . Hairulla, H Hanami, Zarah A. Hendrawan, Agus J. Indrabayu, I Irmawaty, Rita Jefferson, Ian Johannes Patanduk Karapa, Enos Lawalenna Samang Lawalenna Samang Maming, Muhammad Idhil Marfu'ah, Nurul Mary Selintung Muh. Isran Ramli Muhammad Wihardi Tjaronge Muhiddin, A. B. Muhiddin, Ahmad B. Nurdin, Sukirman Panjaitan, Maraden Parung, Herman Rauf, Ichsan Rokhman Rokhman Royal, Alexander Sitti Hijraini Nur St. Maryam Hafram Tenreng, Ramdania Tribowo, Haris Walenna, Muhammad A. Wihardi Tjaronge