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All Journal Jurnal Teknik Sipil Rancang Bangun Ensiklopedia of Journal TEKNIKA RADIAL: JuRnal PerADaban SaIns RekAyasan dan TeknoLogi Jurnal Civronlit Unbari Sultra Civil Engineering Journal (SCiEJ) Jurnal Pengabdian Ensiklopedia Research and Community Service Review Jurnal Riset Rumpun Ilmu Teknik (JURRITEK) STORAGE: Jurnal Ilmiah Teknik dan Ilmu Komputer Jurnal Pengabdian Kepada Masyarakat Inovasi Teknologi Jurnal Pengabdian Kepada Masyarakat RADIAL: Jurnal Peradaban Sains, Rekayasa dan Teknologi
Mulyati, Ely
Universitas Bina Dharma Palembang
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PENGARUH PENGGUNAAN LIMBAH BETON SEBAGAI SUBSTITUSI AGREGAT KASAR TERHADAP KUAT TEKAN BETON Nusantara, Agung; Mulyati, Ely
Ensiklopedia of Journal Vol 7, No 4 (2025): Vol. 7 No. 4 Edisi 1 Juli 2025
Publisher : Lembaga Penelitian dan Penerbitan Hasil Penelitian Ensiklopedia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33559/eoj.v7i4.3060

Abstract

This study aims to The Effect of Using Concrete Waste as a Coarse Aggregate Substitute on Concrete Compressive Strength. To find out whether concrete waste can be used as a good coarse aggregate substitute in Fc` 26.4 MPa concrete. And To find out how much compressive strength value is produced using concrete waste. At all test ages (7, 14, and 28 days), the concrete mixture with 30% concrete waste showed a consistent increase in compressive strength compared to normal concrete. This shows that the use of concrete waste as a coarse aggregate substitute with a percentage of 30% can increase the compressive strength of Fc 26 MPa concrete. Variations in the mixture of 10% and 70%, concrete waste did not provide better compressive strength results compared to normal concrete. Even the percentages of 10% and 70% tend to reduce the compressive strength of concrete. This study shows that the use of concrete waste as a coarse aggregate substitute in Fc 26 MPa concrete provides variations in the compressive strength of concrete at the ages of 7, 14, and 28 days. Specifically, the variation of 30% waste concrete mixture resulted in an increase in the compressive strength of concrete compared to normal concrete at each test age. At the age of 7 days, the compressive strength of normal concrete was 17.12 MPa, while the compressive strength with 10% LB was 16.94 MPa, 30% LB was 17.69 MPa and 70% LB was 16.60 MPa. At the age of 14 days, the compressive strength of normal concrete was 22.79 MPa, while the compressive strength with 10% LB was 21.73 MPa, 30% LB was 23.22 MPa and 70% LB was 21.52 MPa. At the age of 28 days, the compressive strength of normal concrete was 25.78 MPa, while the compressive strength with 10% LB was 25.17 MPa, 30% LB was 26.53 MPa and 70% LB was 24.96 MPa.Keywords: Concrete, Aggregate, Compressive Strength.
ANALISIS PROKTIVITAS TENAGA KERJA PADA PEKERJAAN ATAP Mulyati, ely; Bimantara, Prans
RADIAL : Jurnal Peradaban Sains, Rekayasa dan Teknologi Vol. 10 No. 2 (2022): RADIAL: JuRnal PerADaban SaIns RekAyasan dan TeknoLogi
Publisher : Universitas Bina Taruna Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37971/radial.v10i2.335

Abstract

Abstrak: Analisis Proktivitas Tenaga Kerja Pada Pekerjaan Atap. Tenaga kerja merupakan salah satu sumber daya yang menjadi penentu keberhasilan suatu pekerjaan dan Produktivitas adalah bagaimana menghasilkan atau meningkatkan hasil barang dan jasa setinggi mungkin dengan memanfaatkan sumber daya secara efisien. Pada penelitian ini dilakukan penyebaran kuisioner dan menggunakan perhitungan metode statistik dengan bantuan komputer program SPSS dari hasil penelitian diperoleh kesimpulan terdapat 5 indikator tenaga kerja yang mempengaruhi antara lain (Disiplin, Pengalaman, Komunikasi,Upah Kerja Dan Usia) terhadap indikator dari produktivitas antara lain (Waktu Pekerjaan, Keserasian Dengan Target, Kesesuaian Dengan Perencana, Cuaca, Kesesuaian Keahlian).dan Dari hasil penelitian dan pengolahan data terdapat nilai dari hubungan indikator tenaga kerja terhadap produktivitas jika dilihat dari tabel Interpretasi koefisien korelasi Nilai r diketahui bahwa nilai 0,643 berarti nilai hubungan antara variabel tenaga kerja terhadap produktivitas yaitu dapat dinyatakan KUAT. Berdasarkan hasil perhitungan nilai t hitung sebesar 4,338 Dari data tersebut dibandingkan dengan nilai dari t tabel sebesar = 2,052 didapat bahwa tenyata t hitung lebih besar dari t tabel atau dikonversikan dengan nilai 4,338 > 2,052 maka artinya ada hubungan yang signifikat antara tenaga kerja dan produktivitas Kata kunci: Pekerjaan Atap; Tenaga Kerja; Produktivitas Abstract: Labor Productivity Analysis on Roofing Work. Labors are the resources that determines the success of a job and Productivity is how to produce or increase the results of goods and services as high as possible by utilizing resources efficiently. The aim of this research is to find out what indicators affect labor productivity and what is the relationship of the indicators that have been obtained to labor productivity. In this study, questionnaires were distributed and statistical calculation methods were used with the help of the SPSS computer program. From the results of the study, it was concluded that there were 5 labor indicators that influenced, among others (Discipline, Experience, Communication, Wage and Age) on indicators of productivity, including (Time Occupation, Conformity with Targets, Conformity with Planners, Weather, Appropriate Skills). And From the results of research and data processing there is a value of the relationship between labor indicators and productivity when seen from the table. labor to productivity, which can be stated as STRONG, the value of the contribution of labor to productivity is 41.35% and the remaining 58.65% is determined by other variables such as (worker health, managerial, work area, assistive facilities , delays in tools and materials, large volumes worked). Based on the calculation results, the t count value is 4.338. From these data, compared with the value from t table = 2.052, it is found that t count is greater than t table or converted with a value of 4.338 > 2.052, meaning that there is a significant relationship between labor and productivity. Keyword: Roofing Work; Labors; Productivity
PEMANFAATAN LIMBAH CANGKANG REMIS SEBAGAI BAHAN SUBSTITUSI SEMEN PADA BATAKO SEGITIGA Lisiana, Rani; Mulyati, Ely
RADIAL : Jurnal Peradaban Sains, Rekayasa dan Teknologi Vol. 11 No. 1 (2023): RADIAL: JuRnal PerADaban SaIns RekAyasan dan TeknoLogi
Publisher : Universitas Bina Taruna Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37971/radial.v11i1.372

Abstract

Abstrak: Pemanfaatan Limbah Cangkang Remis Sebagai Bahan Subtitusi Semen Pada Batako Segitiga. Remis merupakan jenis kerang yang banyak terdapat di daerah kecamatan Tugumulyo. Penelitian ini dilakukan untuk mengetahui apakah limbah cangkang remis bisa dimanfaatkan sebagai bahan substitusi semen pada batako segitiga. Penelitian ini menggunakan studi eksperimental dengan melakukan percobaan langsung di laboratorium. Rencana adukan campuran batako segitiga ini menggunakan 6 persentase pemakaian abu cangkang remis, yaitu: 0%, 20%, 30%, 40%, 50%, dan 60%. Hasil pengujian kuat tekan rata-rata batako segitiga memiliki nilai yang berbeda. Kuat tekan rata-rata pada sampel I pada batako pejal adalah 26 kg/cm2 dan batako berlubang adalah 25 kg/cm2, sampel II pada batako pejal adalah 27 kg/cm2 dan batako berlubang adalah 25 kg/cm2, sampel III pada batako pejal adalah 20 kg/cm2 dan batako berlubang adalah 19 kg/cm2, sampel IV pada batako pejal adalah 19 kg/cm2 dan batako berlubang adalah 17 kg/cm2, sampel V pada batako pejal adalah 20 kg/cm2 dan batako berlubang adalah 18 kg/cm2, sedangkan kuat tekan batako segitiga yang terkecil adalah sampel VI pada batako pejal adalah 17 kg/cm2 dan batako berlubang adalah 15 kg/cm2 Berdasarkan hasil penelitian dapat disimpulkan bahwa abu cangkang remis layak digunakan sebagai bahan substitusi semen dengan persentase maksimal adalah 20%. Kata Kunci : Abu Cangkang Remis; Batako Segitiga Pejal; Batako Segitiga Berlubang; Kuat Tekan Abstract: Utilization Of Remis Shell Waste As A Substitutional Material For Cement In Triangle Bricks. Clam is a type of shellfish that are widely found in the Tugumulyo sub-district. This research was conducted to determine whether clam shell waste can be used as a substitute for cement in triangular blocks. This research used experimental study by doing the experiments directly in the laboratory. The plan of mixing triangular bricks mixtures used 6 percent of clam shell ash, namely: 0%, 20%, 30%, 40%, 50%, and 60%. The test results of the average compressive strength of triangular blocks have different values. The average compressive strength in the sample “I” on solid brick is 26 kg/cm2, and the hollow brick is 25 kg/cm2, the sample “II” on solid brick is 27 kg/cm2, and the hollow brick is 25 kg/cm2, the sample “III” on solid brick is 20 kg/cm2, and the hollow brick is 19 kg/cm2, the sample “IV” on solid brick is 19 kg/cm2, and the hollow brick is 17 kg/cm2, the sample “V” on solid brick is 20 kg/cm2, and the hollow brick is 18 kg/cm2, the sample “VI” on solid brick is 17 kg/cm2, and the hollow brick is 15 kg/cm2. This percentage of the clam shell ash a substitute for cement in each sample is different. As the results of the research, it can be concluded that clam shell ash is properly suitable to use as a cement substitute with a maximum percentage is 20%. Keywords : Clam Shell Ash; Triangle Solid Brick; Triangle Hollow Brick; Compressive Strength
PEMANFAATAN BAHAN LOKAL BAMBU MAYAN SEBAGAI BAHAN SUBSTITUSI ANGREGAT PADA BETON Mulyati, Ely
RADIAL : Jurnal Peradaban Sains, Rekayasa dan Teknologi Vol. 11 No. 2 (2023): RADIAL: JuRnal PerADaban SaIns RekAyasan dan TeknoLogi
Publisher : Universitas Bina Taruna Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37971/radial.v11i2.429

Abstract

Bamboo is a plant that can be found around us, especially in rural areas. Bamboo is an environmentally friendly building material compared to conventional building materials. In addition to being easily accessible, cheap, and lightweight, bamboo also possesses considerable strength. There have been numerous studies on the use of bamboo, but in this research, bamboo is utilized as a substitute material for coarse aggregates. The planned compressive strength is for concrete with a compressive strength of K250 (20.75MPa) with substitution proportions of 30%, 50%, and 100%, which will be compared with normal concrete. In this study, it is expected to determine the proportion of substitution of coarse aggregates in concrete using bamboo. Based on the tests conducted, ranging from testing concrete-forming materials to compressive strength tests, the compressive strength obtained for normal concrete (0%) at 28 days is 26 MPa. Meanwhile, the compressive strength for concrete with a 30% substitution proportion is 26 MPa, 50% proportion is 13 MPa, and 100% proportion is 9 MPa. Thus, it can be concluded that the greater the percentage of concrete substitution, the lower the compressive strength obtained.
PENGENDALIAN BIAYA PROYEK KONSTRUKSI DENGAN KONSEP EARN VALUE ANALYSIS Mulyati, Ely; Nurhasanah, Nurhasanah
RADIAL : Jurnal Peradaban Sains, Rekayasa dan Teknologi Vol. 12 No. 1 (2024): RADIAL : Jurnal Peradaban Sains, Rekayasa dan Teknologi
Publisher : Universitas Bina Taruna Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37971/radial.v12i1.444

Abstract

Earned Value Analysis (EVA) is a powerful and effective tool in construction project cost and schedule control. With proper implementation, EVA can help project managers to keep the project within the set budget and schedule, and increase the chances of overall project success. Although it faces challenges in its implementation, the benefits derived from using EVA far outweigh them, making it an invaluable approach in construction project management. Based on the BCWP value and the percentage of work realization obtained from the calculation until week 33 is Rp.6,601,973,900, - less than the BCWS value until week 33, which is Rp.7,686,078,000, - with a difference in realized and planned costs of Rp.1,084,104,100 and Rp.1,084,104,100. .084,104,100 and the percent progress realization of 68.699% is less than the percent plan which is 79.98%, with a difference in percent realization and plan of 11.28% this shows that until week 33 the project is delayed by 3 weeks from the scheduled plan. By using the BCWP value and the CPI value, the estimated value of the remaining cost or ETC is Rp.2,758,926,605, - and the estimated final cost of the project or EAC is Rp.8,609,028,353, 48 the EAC value is smaller than the planned budget cost of Rp.9,610,000,000, - meaning that the Earned Value to be obtained by the company is Rp.1,000,971,647
Pengawasan Kualitas Beton Pada Proyek Dinding Penahan Tanah Kejaksaan Tinggi Sumatera Selatan Sonia; Ely Mulyati
STORAGE: Jurnal Ilmiah Teknik dan Ilmu Komputer Vol. 4 No. 3 (2025): Agustus
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/storage.v4i3.5742

Abstract

This study aims to describe the process of monitoring the quality of concrete in the retaining wall construction project at the South Sumatra High Prosecutor's Office. The concrete used is a type of ready mix quality K-175, with supervision carried out through the stages of slump test, sample collection and curing, and concrete compressive strength test. This research uses a qualitative descriptive method with a case study approach. The results showed that the concrete slump value was within the specification range (10-12 cm), while the concrete compressive strength test results at the age of 7 days reached an average of 181.469 kgf/cm² and at the age of 14 days amounted to 188.397 kgf/cm². These values indicate that the concrete has met the technical strength requirements for non-structural structures. Some field constraints such as high rainfall and delays in concrete delivery can be overcome by rescheduling, the use of work area protection, and good logistical coordination. Overall, the concrete quality in this project was in accordance with the set standards.
Tinjauan Pengawasan Waktu Pelaksanaan Pada Proyek Pembangunan Dinding Penahan Tanah Kejaksaan Tinggi Sumatera Selatan Dicky, Achmad; Ely Mulyati
STORAGE: Jurnal Ilmiah Teknik dan Ilmu Komputer Vol. 4 No. 3 (2025): Agustus
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/storage.v4i3.5773

Abstract

This study aims to evaluate the suitability between planning and realization of implementation time in the retaining wall construction project at the South Sumatra High Prosecutor's Office. Using quantitative descriptive method and case study approach, data was obtained through direct observation, documentation, and analysis of weekly and monthly project reports. The S-curve is used as the main tool in monitoring the deviation between the planned and realized work weights. The results showed that in general the project was on schedule, although there was a negative deviation in weeks 7 to 9 due to weather constraints, material delays, and labor shortages. However, through acceleration strategies such as overtime and improved logistics management, delays were minimized. Structured time monitoring proved effective in keeping the project within schedule tolerance limits. This research emphasizes the importance of an adaptive monitoring system as well as good coordination between teams as keys to successful implementation of construction projects.
Evaluasi Kapasitas Lahan Parkir pada Wilayah Kantor Besar PT Bukit Asam Tbk Tanjung Enim Akhmad Khanif Berliana; Farlin Rosyad; Ely Mulyati
JURAL RISET RUMPUN ILMU TEKNIK Vol. 4 No. 3 (2025): Desember : Jurnal Riset Rumpun Ilmu Teknik
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurritek.v4i3.6934

Abstract

The increasing number of employees and vehicles at the Head Office of PT Bukit Asam Tbk Tanjung Enim has created a growing demand for adequate parking facilities. Limited parking space tends to encourage the use of on-street parking, which may lead to traffic congestion and reduce the comfort of the office environment. This study aims to analyze parking capacity and provide optimal management recommendations. The research was conducted through a preliminary survey, literature review, collection of primary and secondary data, and descriptive analysis to determine the parking space requirements for each type of vehicle. The results show that the maximum parking duration for cars and motorcycles is 440 minutes, with peak volumes of 142 vehicles/hour for cars and 124 vehicles/hour for motorcycles at 06.00–06.59. The parking index reached 96.52% for cars and 73.33% for motorcycles. The available static capacity is 115 SRP for cars and 210 SRP for motorcycles, while the ideal parking space requirement is 122 SRP for cars and 151 SRP for motorcycles. In conclusion, the current parking capacity is sufficient for motorcycles but insufficient for cars. Therefore, optimization of parking patterns, such as adjusting the parking angle to 90°, is necessary to increase capacity and improve convenience for all employees.
PEMANFAATAN LIMBAH PLASTIK SEBAGAI BAHAN BETON RINGAN RAMAH LINGKUNGAN Meilani, Nadia; 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.v8i1.3413

Abstract

This study aims to examine the effect of utilizing plastic waste as an additive material in lightweight concrete on the compressive strength of the concrete. The testing was conducted with variations in the percentage of plastic waste at 5%, 10%, and 15% in the concrete mix, then compared to normal concrete without plastic waste. The results showed that the highest compressive strength was obtained in the mix with 5% plastic waste, reaching 29.09 MPa, which is slightly higher than the normal concrete with a compressive strength of 28.24 MPa at 28 days of age. At 10% and 15% plastic waste, the compressive strengths were 28.45 MPa and 28.03 MPa respectively, indicating a decrease compared to the 5% mix. These data suggest that the addition of plastic waste does not consistently improve the quality of concrete, so the optimal percentage must be carefully determined to avoid reducing the concrete’s strength. This study illustrates that the utilization of plastic waste as an additive in lightweight concrete can enhance compressive strength at certain levels, but excessive use may negatively affect the concrete’s performance.Keywords: Plastic Waste, Environmentally Friendly Lightweight Concrete
PERBANDINGAN POTENSI TANAH EKSPANSIF BERDASARKAN HASIL PENGUJIAN 1-D FREE SWELL DAN CBR RENDAMAN LABORATORIUM Tegar Pramudwitya, Petrus Kanisius; Mulyati, Ely; Simangunsong, Yoel Febrian
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.v8i1.3402

Abstract

Tanah ekspansif memiliki potensi perubahan volume yang signifikan akibat perubahan kadar air, sehingga memerlukan identifikasi karakteristik pengembangannya. Penelitian ini membandingkan potensi pengembangan tanah ekspansif menggunakan metode 1-D Free Swell Test (SNI 6424:2008) dan metode CBR rendaman (SNI 1744:2012). Sampel tanah dibuat dengan variasi komposisi bentonit sebesar 0%, 30%, 40%, 50%, 60%, dan 100% dari berat kering tanah. Hasil pengujian 1-D Free Swell menunjukkan nilai pengembangan berkisar antara 2,91% hingga 3,14%, yang berdasarkan klasifikasi Chen (1988) termasuk kategori rendah hingga sedang. Pada pengujian CBR rendaman, nilai indeks pengembangan berkisar 2,34% hingga 3,04%, dengan kategori sedang hingga tinggi menurut Look (2016). Perbandingan hasil menunjukkan adanya perbedaan pada nilai dan klasifikasi potensi pengembangan. Temuan ini menegaskan pentingnya pemilihan metode yang sesuai dengan tujuan evaluasi, baik untuk menilai pengembangan bebas secara vertikal maupun pengembangan dengan pembebanan lateral. Kata kunci: Tanah ekspansif, Bentonit, 1-D Free Swell Test, CBR rendaman, Potensi pengembangan.
Co-Authors Aang Samudra Abi Hendratno Achmad Syarifudin, Achmad Agung Nusantara Akhmad Khanif Berliana Alfain, M. Hifzni Anggi Anggraini, Anggi Anna Emilawati Ari Ramadan Bimantara, Prans Desti Mandasari Putri Dicky, Achmad Dwi Yanti Emiliawati, Anna Ersa Utami, Wahdana Farlin Rosyad Firdaus Gamara, M. Rizky Rewa Kiki Natalia Lisiana, Rani Mazpar, Ely Meilani, Nadia Mery Anggriani Mery Anggriani Monica, Gita Farera Nurhasanah Nurhasanah Nurhasanah Nurhasanah Pironika, Tarisa Pramudwitya, Petrus Kanisius Tegar Prans Bimantara Prawira, Wanda Yudha Rani Lisiana Renaldi, Gilang Rizki Hidayat, M. Noor Rosyad, Farlin Rusedky, Muhammad Sakinah Sakinah Saputra, Ksatria Saulawani, Athiyah Sidiq, Abdi Rachman Simangunsong, Yoel Febrian Sonia Syafei, Rahmat Johar Tegar Pramudwitya, Petrus Kanisius Yendri, Okma