Claim Missing Document
Check
Articles

Found 39 Documents
Search

Studi Eksperimental Nilai Marshall pada Campuran AC-WC Menggunakan Aspal Modifikasi Karet Alam Terhadap Variasi Suhu Pemadatan Ikhlas Zai; Fitridawati Soehardi; Putri, Lusi Dwi
Jurnal Karya Ilmiah Multidisiplin (JURKIM) Vol. 5 No. 1 (2025): Jurnal Karya Ilmiah Multidisiplin (Jurkim)
Publisher : Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/jurkim.v5i1.22112

Abstract

In this research, the modified asphalt used is natural rubber asphalt, which has high elastic properties due to its high resilience and high strain ratio. The aim of this research is to analyze the marshall value with variations in compaction temperature using natural rubber modified asphalt. The results of this research showed that the temperature variation density value increased with the highest temperature density at 160℃ of 2.17 gr/cm and the lowest value at 110℃ of 1.91gr/cm. The Marshall value of the VFWA value increased with the highest increase at a temperature variation of 160℃ of 68.1% and the lowest value at a temperature of 110℃ of 31.5%. The VITM value relative to the Marshall value tends to decrease with the lowest decrease at a temperature variation of 160℃ of 3.20% and the highest value at a temperature of 110℃ of 5.67%. The VMA value of the temperature variation relative to the Marshall value tends to decrease at a temperature of 160℃ of 28. 39% and the largest value is at a temperature of 110℃ of 36.91%. The stability value at temperature variations on Marshall characteristics tends to increase with the highest increase at a temperature of 160℃ of 1702.49 and the smallest value at a temperature variation of 110℃ of 1323.41. The MQ value in temperature variations with respect to the Marshall characteristics increased at a temperature of 140℃ by 523.90mm and the lowest value at a temperature of 110℃ was 183.81 mm. Marshall characteristics with respect to flow values ​​tended to fluctuate with the highest increase at a temperature variation of 120℃ of 7.80mm. and the lowest at a temperature of 160℃ is 2.23mm. So, with each increase in compaction temperature, the marshall value at a temperature variation of 140℃ - 160℃ with the use of natural rubber modified asphalt meets the requirements of Bina Marga specifications.
Pengaruh Waktu Perendaman Dengan penambahan Kapur Sebagai Bahan Stabilisasi Pada Tanah Lempung Terhadap Nilai CBR Soehardi, Fitridawati; Putri, Lusi Dwi
Journal of Infrastructure and Civil Engineering Vol. 4 No. 2 (2024)
Publisher : Program Studi Teknik Sipil Sekolah Tinggi Teknologi Pekanbaru

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35583/jice.v4i2.57

Abstract

Nilai daya dukung tanah dasar yang lebih dikenal dengan subgrade, mem punyai pengaruh pada perhitungan tebal perkerasan dalam suatu konstruksi jalan. Pengujian tanah lempung merah dengan bahan tambah kapur untuk memperoleh nilai CBR yang disyaratkan dalam konstruksi jalan raya tadi merupakan rekayasa geoteknik yang dapat dilakukan. Stabilisasi tanah kapur lebih cocok dengan waktu ikatan yang lebih lama, sehingga dapat menguntungkan bila terjadi penundaan pekerjaan yang agak lama setelah pencampuran dan tidak ada resiko berkurangnya kekuatan campuran oleh akibat pemadatan. Melalui uji CBR laboratorium terhadap bahan tanah lempung merah yang distabilisasi dengan kapur dengan berbagai variasi waktu perendaman terhadap benda uji dapat diperoleh nilai CBR yang disyaratkan. Penelitian bertujuan untuk menentukan persentase yang efektif dalam penambahan kapur dari segi nilai CBR (California Bearing Ratio) terhadap lama waktu perendaman. Hasil penelitian menunjukkan nilai CBR benda uji yang tidak direndam maupun tidak direndam cendrung mengalami peningkatan seiring dengan penambahan kapur. Namun nilai CBR tanah yang menggunakan perendaman cendrung mengalami penurunan seiring dengan lamanya waktu perendaman. Nilai CBR tertinggi diperoleh pada variasi penambahan kapur 15 % dengan lama waktu pemeraman 4 Hari yaitu 26,05% dan nilai CBR terendah terdapat pada penambahan 5 % dengan lama waktu Prendaman 14 Hari yaitu 5,35 %.
Analisis Kuat Geser Tanah Kohesif Menggunakan Berbagai Geosintetik Putri, Lusi Dwi; Abdul Hakam; Thamrin , Rendy; Yossyafra, Yossyafra
Siklus : Jurnal Teknik Sipil Vol. 11 No. 1 (2025): Siklus: Jurnal Teknik Sipil
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/siklus.v11i1.26906

Abstract

Kategori tanah dasar yang tidak memadai seperti lempung yang memiliki kuat geser rendah dapat menyebabkan kerusakan bagi konstruksi, sehingga perlu diberi perkuatan salah satunya adalah dengan diperkuat geosintetik. Tujuan penelitian adalah untuk menganalisis kekuatan tanah yang diperkuat dengan geosintetik terhadap gaya geser. Geosintetik yang digunakan adalah geotekstil jenis woven, geotekstil non-woven dan geogrid. Prosedur yang digunakan adalah pengujian fisik tanah serta pengujian geser langsung. Tanah lempung yang digunakan berasal dari Kota Pekanbaru, Provinsi Riau. Lempung yang diuji dikategorikan sebagai lean clay anorganik (CL) dengan plastisitas sedang. Kadar air sebesar 26,25%, batas cair sebesar 41,54%, batas plastis sebesar 21,54%, berat jenis sebesar 2,653, berat isi sebesar 18,69 kN/m³ dan indeks plastisitas sebesar 20,0%. Sudut gesek internal sebesar 2,66 dan kohesi sebesar 0,42. Sudut gesekan tanah dan geosintetik dari uji geser langsung laboratorium, tanah dengan geotekstil woven ϕ = 30,780°, dan kohesi antarmuka (ca) adalah 0,1309 kg/cm2, tanah dengan geotekstil non-woven ϕ = 37,26°, dan kohesi antarmuka (ca) adalah 0,4332 kg/cm2, tanah dengan geogrid ϕ = 44,330° dan kohesi antarmuka (ca) adalah 0,5929 kg/cm2. Hasil pengujian menyimpulkan bahwa geogrid memberikan nilai kohesi antar muka dan kekuatan geser yang lebih besar dibandingkan geotekstil karena mekanisme interlock (saling mengunci) partikel tanah ke dalam jaring-jaring geogrid lebih efektif dibandingkan hanya dengan kontak gesekan pada geotekstil.
Community Assistance in Facing the Covid-19 Pandemic through Education and Economic Programs Masrifatin, Yuni; Putri, Lusi Dwi; Anwar, Khoirul; Makki, Mustaqim
Bisma : Bimbingan Swadaya Masyarakat Vol. 5 No. 3 (2023): August 2023
Publisher : STAI Miftahul ULa Nganjuk

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59689/bisma.v1i2.259

Abstract

Community Assistance Activities in Dealing with the Covid 19 Pandemic Through the KPM-IK STAIM Nganjuk Program aims to help the community develop and pass the pandemic period by staying productive in the Education sector and the economy. The method in this research is Asset Based Community Developmet (ABCD) or asset-based community empowerment approach. Through the approach of Asset Based Community Development (ABCD) this can sustainably form the independence of the community in increasing income so as to improve its welfare. The results of the education sector research this activity has a positive impact with the change of students to better maintain the discipline of respecting teachers and science,while the economic sector of the community is helped in the manufacture of SIUP for MSMEs in pandantoyo village
Improving Household Environmental Health Through PHBS, Dagusibu, GeMa CerMat, and GerMas Putri, Lusi Dwi; Soehardi, Fitridawati; Atmam, Atmam
Bisma : Bimbingan Swadaya Masyarakat Vol. 6 No. 4 (2024): October 2024
Publisher : STAI Miftahul ULa Nganjuk

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59689/bisma.v2i1.289

Abstract

Household health is a critical determinant of a quality life, particularly in areas that have already become slums, which should be a shared concern. This community service activity focused on providing counseling on clean and healthy living behaviors, along with proper medication usage. The goal was to enhance participants' knowledge on maintaining environmental health, managing medications properly, selecting and using medications correctly, and recognizing their efficacy and potential side effects. This intervention aimed to improve the community's overall health literacy and promote sustainable practices in drug management.
Performance of Soil Subgrade Improvement using Waste Material Coconut Shell Charcoal Putri, Lusi Dwi; Rahmawati, Cut; Ahmad, Jawad
International Journal of Engineering, Science and Information Technology Vol 5, No 3 (2025)
Publisher : Malikussaleh University, Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52088/ijesty.v5i3.1006

Abstract

This study investigates using Coconut Shell Charcoal (ABK) as a stabilizing agent for clayey soils, aiming to enhance their suitability for road subgrade applications. The primary objective is to evaluate the effect of varying ABK concentrations (0%, 5%, 10%, and 15%) on the geotechnical properties of clay soil, particularly its compaction and load-bearing capacity. Laboratory tests, including compaction and California Bearing Ratio (CBR), were conducted to assess the influence of ABK on soil strength and stability. The results reveal that adding ABK significantly improves the soil's compaction characteristics and CBR values. The highest improvement was observed at 15% ABK, where the CBR value reached 22.22%, well above the minimum threshold required for road subgrade materials. There is a good influence of coconut shell charcoal on increasing the CBR value of clay soil subgrade at each additional material. The R value of 0.963 obtained shows a very high correlation. The addition of coconut shell charcoal to the subgrade soil has a positive effect on the California Bearing Ratio value which increases in each variation. The study demonstrates that ABK, a sustainable agricultural waste product, provides an affordable and effective solution for enhancing the strength and stability of clay soils, making it a promising alternative to traditional stabilizers such as lime and cement. The findings have significant implications for road construction in regions with expansive and weak soils, offering a cost-effective and environmentally friendly method for soil stabilization. This research contributes to the growing body of knowledge on the use of agricultural waste in infrastructure development, emphasizing the potential of ABK in providing sustainable solutions for soil improvement in civil engineering applications.
Studi Beton Geopolimer Dengan Bahan Dasar Fly Ash Terhadap Kuat Tekan Beton Ilyas, Yussy Afrilia; Yanti, Gusneli; Putri, Lusi Dwi
Jurnal Rekayasa Konstruksi Mekanika Sipil Vol 5 No 2 (2022): Volume 5 Nomor 2 Tahun 2022
Publisher : Fakultas Teknik Universitas Katolik Santo Thomas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54367/jrkms.v5i2.2096

Abstract

Fly ash memiliki potensi sebagai bahan pengganti semen Portland, dikarenakan termasuk bahan pozzolan yaitu bahan yang memiliki kandungan silika (Si) dan alumina (Al). Bahan pozzolan tidak mempunyai kemampuan pengikat seperti semen pada umumnya, tetapi dikarenakan bentuknya yang halus, dan dapat bereaksi dengan cairan alkali activator NaOH dan Na2SiO3 yang memiliki kemampuan mengikat layaknya semen Portland, campuran ini disebut dengan campuran geopolimer. Penelitian ini menggunakan bahan pengikat campuran beton geopolymer menggunakan fly ash dan cairan alkali activator berupa NaOH dan Na2SiO3 dengan perbandingan sebesar 1,5; 2,0; 2,5; 3,0; 3,5 yang menggunakan metode ekperimental. Metode dalam perancangan campuran beton menggunakan cara DOE di Indonesia dikenal sebagai standar perencanaan oleh Departemen Pekerjaan Umm dan dimuat dalam Standar SNI 03-2834-2000, "Tata cara pembuatan rencana campuran beton normal”. Secara berurut nilai kuat tekan beton (rata-rata) yang di dapat adalah 3,40 MPa (SS/SH = 1,5) ; 7,11 MPa (SS/SH = 2,0); 10,13 MPa (SS/SH = 2,5); 9,07 MPa (SS/SH = 3,0) dan 8,05 MPa (SS/SH = 3,5). Beton yang menghasilkan kuat tekan beton maksimal ada pada variasi perbandingan SS/SH sebesar 2,5 dengan nilai kuat tekan sebesar 10,13 MPa.
Bearing Capacity in Reinforced Soil: A Systematic Review of Modern Assesment Methods Putri, Lusi Dwi
International Journal of Artificial Intelligence Research Vol 8, No 1.1 (2024)
Publisher : Universitas Dharma Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29099/ijair.v8i1.1.1301

Abstract

This systematic literature review  aims to thoroughly analyze the probabilistic methods used to assess the bearing capacity of reinforced soil , with a focus on identifying research trends, gaps, and evaluating various techniques such as Monte Carlo simulation, reliability-based design, and the stochastic finite element method (SFEM). The review follows established SLR protocols, employing purposive sampling from scientific databases such as Scopus to select peer-reviewed articles and conference papers. The dataset includes 113 full-text articles, 9 books, and 420 non-full-text entries, totaling 542 sources. Data collection was guided by predetermined inclusion and exclusion criteria, and a coding framework was utilized to categorize and compare key variables, including probabilistic methods and research outcomes. Qualitative synthesis was used for theme extraction, while quantitative assessment evaluated the effectiveness of the methods. The main contribution of this study lies in highlighting the strengths, limitations, and practical applicability of various probabilistic approaches, while advocating for the further integration of probabilistic and deterministic methods to enhance the reliability of soil reinforcement design. This review provides valuable insights for geotechnical engineers and researchers, advancing the understanding of probabilistic methods in improving the performance of reinforced soil.
Pelatihan Publikasi Artikel Ilmiah Melalui Open Journal System (OJS) dan Plagiarism Bagi Komunitas Literasi Guru SMK Putri, Lusi Dwi; Soehardi, Fitridawati; Dinata, Marta; Dewi, Sri Hartati
Dinamisia : Jurnal Pengabdian Kepada Masyarakat Vol. 7 No. 6 (2023): Dinamisia: Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/dinamisia.v7i6.17624

Abstract

Since the Minister of Administrative and Bureaucratic Reform Decree Number 26 of 1989, namely regarding changing teacher positions to functional positions, teachers have been required to develop their careers. This explains that teachers are required to disseminate the results of Classroom Action Research through seminars, publications, or other means so that the research results can be known to the general public. In general, the dissemination of scientific work is carried out online through the Open Journal System system. However, with the increase in information technology, scientific work produced is prone to plagiarism due to the ease of accessing information. Partners are teachers at SMKN 3 Tanjungpinang, Riau Islands Province. Partners have the problem of a lack of knowledge about how to submit articles via the Open Journal System (OJS) system and plagiarism as well as how to check plagiarism in a scientific work. The method used is to provide knowledge about the Open Journal System (OJS) and Anti-Plagiarism systems and training using software or online Anti-Plagiarism checking applications which can be used for free. The results obtained are that partners understand how to use the OJS system, Plagiarism Checker and Turnitin applications, from 25 (twenty five) participants with a 'Very Good' score of 12%, a 'Good' score of 60%, a 'Medium' score of 28% and 'Not Appearing' value is 0%. Other results in the form of teaching materials and articles with draft status to the Community Service Journal will be published in 2024. The conclusion obtained is the increased capacity of partners in using the OJS system and plagiarism check applications.