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PERBANDINGAN NILAI EKSPANSIF TANAH BERDASARKAN HASIL INDEX PROPERTIES DAN 1-D FREE SWELL TEST Pironika, Tarisa; Mulyati, Ely
Ensiklopedia of Journal Vol 8, No 1 (2025): Vol. 8 No. 1 Edisi 1 Oktober 2025
Publisher : Lembaga Penelitian dan Penerbitan Hasil Penelitian Ensiklopedia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33559/eoj.v8i1.3414

Abstract

Expansive soil is a type of soil that is susceptible to significant volume changes due to fluctuations in water content. This study aims to analyze the comparison of the expansive soil values based on the Index Properties results and the 1-D Free Swell Test with variations in bentonite mixture of 0%, 30%, 40%, 50%, 60%, and 100%. The observed parameters include the liquid limit (LL), plasticity index (PI), and the expansion value from the 1-D Free Swell Test. The test results show that the addition of bentonite significantly increases the plasticity of the soil. The LL value increased from 56.37% at 0% bentonite to 114.33% at 100% bentonite, while the PI value increased from 34.77% to 92.72%. Based on classification, soil with a bentonite mixture ≥30% is categorized as very high. Meanwhile, the results of the 1-D Free Swell Test show a relatively small expansion variation, namely 2.91%–3.76%, with a classification of low to medium expansion potential.Effective Index Properties are used as an early indicator for the identification of expansive soil, while the 1-D Free Swell Test is more representative in describing the actual development potential in the field.Keywords: expansive soil, bentonite, index properties, free swell test
ANALISIS KINERJA SIMPANG DI JALAN H.M NOERDIN PANDJI Gamara, M. Rizky Rewa; Rosyad, Farlin; Syarifudin, Achmad; Mulyati, ely
Ensiklopedia of Journal Vol 8, No 1 (2025): Vol. 8 No. 1 Edisi 1 Oktober 2025
Publisher : Lembaga Penelitian dan Penerbitan Hasil Penelitian Ensiklopedia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33559/eoj.v8i1.3425

Abstract

Jalan Baru Intersection on Jalan H.M. Noerdin Pandji, Palembang, is a signalized intersection connecting strategic areas such as shopping centers, residential zones, and access to Sultan Mahmud Badaruddin II Airport. High traffic volumes during peak hours often cause congestion, making it necessary to analyze the intersection’s performance. This study aims to assess the existing conditions and evaluate the intersection’s performance through an intersection inventory survey, classified turning movement count, and cycle time survey, supported by secondary data from relevant agencies. Analysis was conducted using peak hour traffic volume data (07:00–08:00 WIB) totaling 10,412 vehicles/hour. Results show the highest traffic volume on Jalan Pangeran Ayin at 3,662 pcu/hour and the lowest on Jalan Sako Baru at 1,375 pcu/hour. The average queue length reached 83.41 meters, with the longest queue at 120 meters. The average delay was 56.9 seconds/pcu, categorized as LOS E, indicating near-saturated flow with moderate to high delays. Overall, the intersection can still accommodate peak hour traffic, but performance is declining on certain approaches, particularly Jalan Pangeran Ayin and Jalan Sako Baru.Keywords: Intersection Performance, Traffic, LOS, Congestion, Palembang
PERBANDINGAN DISTRIBUSI UKURAN BUTIRAN TANAH MENGGUNAKAN METODE KERING (DRY SIEVING) DAN BASAH (WET SIEVING) Ersa Utami, Wahdana; Mulyati, Ely
Ensiklopedia of Journal Vol 8, No 1 (2025): Vol. 8 No. 1 Edisi 1 Oktober 2025
Publisher : Lembaga Penelitian dan Penerbitan Hasil Penelitian Ensiklopedia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33559/eoj.v8i1.3412

Abstract

Penelitian ini bertujuan untuk membandingkan distribusi ukuran butiran tanah yang diperoleh melalui metode pengayakan kering (dry sieving) dan pengayakan basah (wet sieving). Pengujian dilakukan pada tiga sampel tanah berjenis clay yang diambil dari lokasi berbeda. Metode dry sieving dilakukan tanpa perlakuan pencucian sehingga seluruh fraksi butiran, termasuk partikel halus, tetap terukur. Sebaliknya, metode wet sieving menggunakan pencucian dengan air sehingga partikel halus (<0,075 mm) terbilas dan terpisah dari sampel. Hasil analisis menunjukkan bahwa metode dry sieving menghasilkan persentase fraksi halus yang lebih tinggi dibandingkan wet sieving. Perbedaan ini disebabkan oleh hilangnya partikel lanau dan lempung pada proses wet sieving. Parameter gradasi yang dihitung, seperti koefisien uniformitas (Cu) dan koefisien kelengkungan (Cc), menunjukkan bahwa sebagian besar sampel tergolong pasir bergradasi baik (well graded sand) dengan kandungan fraksi halus rendah. Perbedaan distribusi ukuran butiran antara kedua metode memiliki implikasi penting terhadap interpretasi sifat fisik dan mekanik tanah, terutama terkait permeabilitas dan sifat kohesi. Kata Kunci: Distribusi ukuran butiran, dry sieving, wet sieving, gradasi tanah, sifat fisik tanah
ANALISIS PENATAAN PARKIR KAWASAN PERKANTORAN PEMERINTAH KOTA PALEMBANG DI RUAS JALAN MERDEKA Rusedky, Muhammad; Rosyad, Farlin; Prawira, Wanda Yudha; Mulyati, Ely
Ensiklopedia of Journal Vol 8, No 1 (2025): Vol. 8 No. 1 Edisi 1 Oktober 2025
Publisher : Lembaga Penelitian dan Penerbitan Hasil Penelitian Ensiklopedia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33559/eoj.v8i1.3421

Abstract

The increasing population and vehicle ownership in Palembang City, particularly in the Government Office area along Jalan Merdeka, have caused significant parking shortages. This situation forces many vehicles, both from employees and visitors, to use on-street parking, which disrupts traffic flow. This study aims to analyze parking characteristics, including volume, accumulation, duration, turnover rate, parking index, current parking demand, and projections for the next five years, as well as to identify effective parking arrangement alternatives. The research method involved a five-day field survey on weekdays at three main locations, measuring existing parking capacity, recording vehicle entries and exits, and analyzing parking characteristics based on the Technical Guidelines for Parking Facility Management (Directorate General of Land Transportation, 1996). The results indicate that the existing parking capacity does not meet the standard Space Unit for Parking (SRP), with an average parking index exceeding 100% for both two-wheeled and four-wheeled vehicles. This condition highlights the urgent need for additional or optimized parking spaces. Recommended solutions include developing centralized parking facilities, implementing multi-story or mechanical parking systems, and applying scheduled parking management to improve efficiency and reduce congestion. Keywords : Parking, Capacity, Parking Index, On-Street Parking
HUBUNGAN ANTARA NILAI UNCONFINNED COMPRESSION TEST DENGAN LIQUID LIMIT (LL) DAN LIQUDITY INDEX (LI) Saulawani, Athiyah; Mulyati, Ely
Ensiklopedia of Journal Vol 8, No 1 (2025): Vol. 8 No. 1 Edisi 1 Oktober 2025
Publisher : Lembaga Penelitian dan Penerbitan Hasil Penelitian Ensiklopedia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33559/eoj.v8i1.3403

Abstract

Clay soil is a type of soil with high plasticity whose properties are strongly influenced by water content. The consistency of clay can be represented by the Liquid Limit (LL) and Liquidity Index (LI), while its strength is commonly evaluated using the Unconfined Compression Test (UCT), which is widely applied in geotechnical analysis. This study aims to analyze the relationship between UCT values and soil consistency index parameters (LL and LI). Soil samples were taken from three different locations and compacted according to the Standard Proctor test as a reference for preparing unconfined compression test specimens. The test results show that the LL values at the three locations were 56.37%, 60.91%, and 42.43%, while LI values ranged from -0.47 to -0.04, indicating soil conditions from dense to slightly plastic. The unconfined compressive strength (qu) at the optimum water content was 14.91 kg/cm² at Location 1, 12.50 kg/cm² at Location 2, and 13.20 kg/cm² at Location 3. Correlation analysis indicates a weak relationship between qu and LL, while qu and LI exhibit a relatively high R² value. However, due to the very limited amount of data, the relationship between these parameters cannot yet be conclusively determined.Keywords: Clay soil, Unconfined Compression Test (UCT), Liquid Limit (LL), Liquidity Index (LI), Compaction
ANALISIS CAMPURAN ASPAL AC-WC PG 76 DENGAN ADDITIONAL FILLER ABU BAMBU TERHADAP FLEKSIBILITAS DAN DURABILITAS Sidiq, Abdi Rachman; Rosyad, Farlin; Mulyati, Ely
Ensiklopedia of Journal Vol 8, No 1 (2025): Vol. 8 No. 1 Edisi 1 Oktober 2025
Publisher : Lembaga Penelitian dan Penerbitan Hasil Penelitian Ensiklopedia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33559/eoj.v8i1.3415

Abstract

Highways are an essential land transportation infrastructure, and the quality of pavement must be maintained to ensure performance and service life. One effort to improve the quality of flexible pavement on the Asphalt Concrete-Wearing Course (AC-WC) layer is by utilizing alternative materials as filler. This study examines the effect of adding bamboo ash as an additional filler in AC-WC mixtures with PG 76 asphalt on flexibility (flow) and durability (Marshall Retained Stability). Bamboo ash contains silica (SiO₂) and exhibits pozzolanic properties, which have the potential to enhance mixture performance. The bamboo ash content variations used were 0%, 0.5%, 1.0%, 1.5%, and 2.0% by the total aggregate weight, with testing conducted using the Marshall Test method. The results showed that the addition of 0.5% bamboo ash increased the flow value from 3.32 mm to 3.52 mm, while further additions above this level did not result in additional flexibility improvement. All mixture variations had Marshall Retained Stability values above the minimum requirement of PU Bina Marga 2018 Revision 2 (≥90%), with the highest value recorded at 0.5% (91.47%). Based on the balance between flexibility and durability, the optimal bamboo ash filler content for AC-WC PG 76 is 0.5%.Keywords : AC-WC, bamboo ash, PG 76 asphalt, flexibility, durability, Marshall Test.
Analisis Kemampuan Kolam Retensi Brimob di Jalan Demang Lebar Daun Sebagai Tampungan Pengendali Banjir Kurnia, Dwi; Syarifudin, Achmad; Mulyati, Ely; Prawira, Wanda Yudha
Sultra Civil Engineering Journal (SCiEJ) Vol 6 No 2 (2025): Sultra Civil Engineering Journal (SCiEJ)
Publisher : Universitas Sulawesi Tenggara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54297/sciej.v6i2.1288

Abstract

The Mobile Brigade (Brimob) retention pond is located on Jalan Demang Lebar Daun, Ilir Barat 2 District, Palembang City. The retention pond is in poor condition. It covers 2,147.6 m2 and has a depth of 3 meters. The area of the Brimob retention pond often overflows during heavy rainfall and floods the surrounding roads.From the discussion and calculations, the analysis of the Brimob retention pond shows that the inlet discharge is 6.039 m3/sec. The total flood discharge is 2.1609 m3 for the Brimob retention pond area. The capacity of the Brimob retention pond is 73119m3. From the points above, based on the objectives of this analysis, it is concluded that the retention pond capacity is 73119 m3.
Perbandingan Nilai DCP (Dynamic Cone Penetrometer) Laboratorium dengan CBR (California Bearing Ratio) Laboratorium Fahreza, Rego; Mulyati, Ely; Dewi, Anggi Purnama Sari
Jurnal Ilmiah Universitas Batanghari Jambi Vol 25, No 3 (2025): Oktober
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/jiubj.v25i3.6338

Abstract

This study aims to compare the Dynamic Cone Penetrometer (DCP) value with the laboratory California Bearing Ratio (CBR) value on soil classified as SC according to USCS and A-2-6 according to AASHTO. Soil samples were taken from the area of the Balai Besar Pelaksanaan Jalan Nasional (BBPJN) South Sumatra at a depth of ±60 cm in three test points. The laboratory tests included natural moisture content, specific gravity, Atterberg limits, sieve analysis, and standard Proctor compaction. The compaction test results showed an optimum moisture content of 18.06% and a maximum dry density of 1.70 g/cm³. The CBR values were obtained from laboratory testing, while the DCP values were measured through dynamic cone penetration on the same samples. Correlation analysis using four methods (PUPR, ASTM, Kleyn, and Zumrawi) indicated varying results. The PUPR method produced the most consistent estimates compared to laboratory data, while ASTM D6951-03 achieved the highest coefficient of determination (R^2 = 0.9743). The Kleyn method remained applicable though less accurate, whereas the Zumrawi method showed significant deviations and was unsuitable for the soil conditions in this study. These findings confirm that the DCP test can serve as a rapid and efficient alternative for estimating CBR values of subgrade soils with similar characteristics.
Analisis Tingkat Kerusakan dan Kelayakan Teknis Rumah Dinas Kodim 0428/Muko-Muko sebagai Dasar Rehabilitasi Widiyanto, Widiyanto; Mulyati, Ely
Blend Sains Jurnal Teknik Vol. 4 No. 2 (2025): Edisi Oktober
Publisher : Ilmu Bersama Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56211/blendsains.v4i2.1240

Abstract

Rumah dinas merupakan fasilitas penting bagi prajurit Tentara Nasional Indonesia (TNI) dalam mendukung kinerja dan kesejahteraan personel, khususnya yang bertugas di daerah. Namun, ketersediaan rumah dinas di Kodim 0428/Muko-Muko, Provinsi Bengkulu masih terbatas sehingga sebagian besar anggota harus menyewa tempat tinggal secara mandiri. Kondisi ini menimbulkan beban ekonomi dan berpotensi memengaruhi efektivitas tugas. Penelitian ini bertujuan untuk menganalisis kelayakan teknis dan ekonomis rencana pembangunan rumah dinas di lingkungan Kodim 0428/Muko-Muko. Metode penelitian menggunakan pendekatan deskriptif kuantitatif dengan studi kelayakan konstruksi, meliputi pengumpulan data primer melalui observasi lapangan dan kuesioner, serta data sekunder berupa dokumen perencanaan dan regulasi terkait. Analisis teknis dilakukan berdasarkan Petunjuk Teknis Standarisasi Desain dan Penilaian Kerusakan Bangunan Nomor 47/SE/DC/2020 Kementerian PUPR. Hasil penelitian menunjukkan bahwa rumah dinas tipe F–120 memiliki tingkat kerusakan ringan sebesar 3,42%, tipe G–90 sebesar 7,18%, tipe H–70 sebesar 5,00%, dan tipe K–45 sebesar 5,44%. Secara keseluruhan, kondisi rumah dinas masih layak dengan kategori kerusakan ringan. Temuan ini menjadi dasar pertimbangan teknis dan ekonomis bagi perencanaan pembangunan maupun rehabilitasi rumah dinas Kodim, agar lebih efektif, efisien, dan berkelanjutan dalam mendukung kesejahteraan prajurit.
Pengawasan Sistem Distribusi Material Dalam Pembangunan Dinding Penahan Tanah Mulyati, Ely; Wulandari, Tanti
Jurnal Konstruksi dan Infrastruktur : Teknik Sipil dan Perencanaan Vol 13 No 2 (2025): Jurnal Konstruksi dan Infrastruktur Vol 13 No.2 : Oktober 2025
Publisher : Civil Engineering Department, Faculty of Engineering, Universitas Swadaya Gunung Jati

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33603/jki.v13i2.10506

Abstract

The material distribution process is one of the key aspects in the success of construction projects, especially in the construction of structures such as retaining walls that require timely delivery and maintained material quality. This study aims to analyze and evaluate the material distribution monitoring system in the construction of retaining walls in the environment. The methods used include field observation, interviews with the project implementation team, and collection of logistics data and material distribution schedules. The results of the study indicate that the main challenges in the distribution system are delays in material supply due to disruption of road access and lack of coordination between project divisions. The implementation of a monitoring system based on mapping schedules and distribution points can improve the efficiency of material flow and minimize work delays. Recommendations from this study include improving monitoring through a real-time monitoring system and integrating measurement data to support more precise and adaptive distribution planning based on field conditions. The practical implications of this study are that a structured and data-based material distribution monitoring system is very relevant to be applied to infrastructure projects in areas with limited access, such as hilly areas, remote villages, or disaster-prone areas. With this system, project implementers can anticipate distribution obstacles more accurately, reduce the risk of delays, and maintain the quality and continuity of development as a whole.