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All Journal Teras Jurnal Justek : Jurnal Sains Dan Teknologi Quimica : Jurnal Kimia Sains dan Terapan Journal of Planning and Research in Civil Engineering Jurnal Teknik Sipil
Muammar, Rajib
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Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Engineering Environmental Science Mathematics Transportation

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DURABILITAS CAMPURAN LASTON LAPIS AUS (AC-WC) DI SUBSTITUSI LIMBAH LOW DENSITY POLYETHYLENE (lDPE) DENGAN CARA KERING TERHADAP RENDAMAN KOTORAN SAPI Muammar, Rajib; Saleh, Sofyan M.; Yunus, Yuhanis
JURNAL TEKNIK SIPIL Vol 1, No 3 (2018): Volume 1 Special Issue, Nomor 3, Januari 2018
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jts.v1i3.10028

Abstract

Abstract: The high road surface temperatures, precipitation and traffic loads are several causes that damage of asphalt course. In Aceh, cow dung is often found on the roads. Cow dung is rich in nutrients and has high water content. It is alledgly the factors causing damage to the roads pavement. One way to overcome the damage of pavement is by modifying the asphalt by using additional material which is a polymer. The polymer used in plastic waste made of Low Density Polyethylene (LDPE) as road asphalt substitute. The main objective of this study was to determine the Marshall characteristics on Asphalt Concrete Wearing Course (AC-WC) mixtures with additional slices of LDPE plastic waste 2%, 4% and 6% in the asphalt pen. 60/70 to the asphalt content by dry process and to find out the effect of the immersion of the LDPE modified asphalt mixtures in cow dung and urine with the time variations of 30 minutes, 24 hours, and 48 hours on its stability and durability. The result showed that the best stability value for the asphalt mixture without substitute material immersion in cow dung was 1181,93 kg, the best stability for value for the asphalt mixed with LDPE at the percentage 6% was 1636,57 kg on 30 minutes immersed. The parameter values for the asphalt mixture with or without the substitution of LDPE in stability, flow, MQ, density, VIM, VMA, and VFA still met the specification requirements of Bina Marga 2014. The best durability value for the asphalt mixture without substitute material immersed was 90,8%, the best durability value for the asphalt mixed with LDPE at the percentage of 6% is 95.88%. Those results met the specifications set by the Bina Marga 2014 that is 90%. The addition of LDPE in the asphalt mixture by dry process with the immersion in cow dung can affect the stability value.Abstrak: Tingginya temperatur permukaan jalan, curah hujan dan beban lalu lintas merupakan beberapa penyebab kerusakan lapisan aspal. Pada jalan didaerah Aceh banyak kita jumpai kotoran sapi berserakan di jalan. Kotoran sapi mengandung sangat banyak unsur hara dan kadar air yang cukup tinggi dan dapat diduga merupakan faktor penyebab kerusakan aspal. Salah satu cara dalam mengatasi kerusakan jalan adalah dengan memodifikasi aspal menggunakan bahan tambah yaitu polimer. Polimer yang digunakan berupa limbah plastik Polyethylene (PE) dengan jenis Low Density Polyethylene (LDPE) sebagai pensubstitusi aspal. Tujuan utama dari penelitian ini untuk mengetahui karakteristik marshall campuran Laston (AC-WC) dengan tambahan irisan limbah plastik LDPE 2%, 4%, dan 6% pada aspal pen 60/70 terhadap berat aspal dengan cara kering, serta mengetahui pengaruh rendaman kotoran dan urine sapi dengan variasi waktu 30 menit, 24 jam, dan 48 jam terhadap stabilitas dan durabilitas aspal modifikasi LDPE. Dari hasil penelitian didapatkan nilai stabilitas terbaik tanpa substitusi pada rendaman kotoran sapi yaitu 1181,93 kg, stabilitas terbaik untuk LDPE yaitu persentase 6% 1636,57 kg pada rendaman 30 menit. Nilai parameter untuk tanpa dan dengan substitusi LDPE yang dihasilkan berupa stabilitas, flow, MQ, density, VIM, VMA, dan VFA masih memenuhi persyaratan spesifikasi Bina Marga tahun 2014. Nilai durabilitas tanpa substitusi sebesar 90,8%, nilai durabilitas dengan persentase 6% LDPE merupakan yang terbaik yaitu 95,88%. Hasil tersebut memenuhi spesifikasi yang ditentukan Bina Marga tahun 2014 yaitu 90%. Penambahan LDPE dalam campuran aspal dengan cara kering pada rendaman kotoran sapi berpengaruh pada nilai stabilitas.
Efek Komposisi NaCl dan Sulfur terhadap Struktur Mikro dan Kekuatan Geser Tanah Pasir Sabilla, Arissa; Rikza; Sinurat, Dian Aswatul; Siregar, Putri Fikadilah; Juanda, Ari; Yosantia, Muhammad Ferah; Muammar, Rajib; Damayanti, Rizki
JURNAL QUIMICA Vol 7 No 2 (2025)
Publisher : Program Studi Kimia, Fakultas Sains dan Teknologi, Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/jq.v7i2.13356

Abstract

Penelitian ini bertujuan untuk menganalisis pengaruh komposisi campuran garam dapur (NaCl) dan belerang (S) terhadap perubahan struktur mikro serta peningkatan kekuatan geser tanah pasir berlempung (SC). Penelitian menggunakan pendekatan analisis deskriptif berbasis data sekunder dari hasil uji kuat geser langsung (Direct Shear Test) pada tanah pasir yang distabilisasi dengan variasi campuran 6% sulfur dan 6–12% NaCl. Hasil analisis menunjukkan bahwa campuran 6% sulfur dan 12% NaCl menghasilkan peningkatan nilai kohesi sebesar ±58%, sudut geser dalam sebesar ±48%, dan tegangan geser maksimum sebesar ±155% dibandingkan tanah asli. Peningkatan kekuatan geser ini disebabkan oleh terbentuknya senyawa pozzolanik seperti Calcium Silicate Hydrate (C–S–H) dan ettringite yang memperkuat ikatan antar partikel tanah. Secara mikrostruktural, terjadi pemadatan partikel, penurunan porositas, serta peningkatan interlocking akibat interaksi ionik antara Na⁺, Cl⁻, dan SO₄²⁻ dengan mineral tanah. Hasil penelitian ini menunjukkan bahwa kombinasi NaCl dan sulfur dapat berfungsi sebagai bahan stabilisasi kimia efektif yang mampu meningkatkan kekuatan mekanik dan kestabilan mikrostruktur tanah pasir secara signifikan. Penelitian ini diharapkan dapat menjadi dasar pengembangan teknologi stabilisasi tanah berbasis reaksi kimia alami yang ramah lingkungan dan ekonomis.
Substitusi Limbah Low Density Polyethylene (LDPE) Pada Campuran AC-WC Dengan Perendaman Kotoran Sapi Terhadap Parameter Marshall Muammar, Rajib; Iqbal, Iqbal
Teras Jurnal : Jurnal Teknik Sipil Vol. 12 No. 1 (2022): Volume 12 Nomor 1, Maret 2022
Publisher : UNIVERSITAS MALIKUSSALEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/tj.v12i1.606

Abstract

Abstrak Tingginya temperatur permukaan jalan, curah hujan dan beban lalu lintas merupakan beberapa penyebab kerusakan lapisan aspal. Pada jalan di daerah Aceh banyak dijumpai kotoran sapi berserakan di jalan. Kotoran sapi mengandung sangat banyak unsur hara dan kadar air yang cukup tinggi dan dapat diduga merupakan faktor penyebab kerusakan perkerasan jalan. Salah satu cara dalam mengatasi kerusakan perkerasan jalan adalah dengan memodifikasi aspal menggunakan bahan tambah yaitu polimer. Polimer yang digunakan berupa limbah plastik Low Density Polyethylene (LDPE) sebagai pensubstitusi aspal. Tujuan utama dari penelitian ini untuk mengetahui karakteristik marshall campuran Laston (AC-WC) dengan tambahan irisan limbah plastik LDPE 2%, 4%, dan 6% pada aspal pen. 60/70 terhadap berat aspal, serta mengetahui pengaruh rendaman kotoran dan urine sapi dengan variasi waktu 30 menit, 24 jam, dan 48 jam terhadap stabilitas aspal modifikasi LDPE. Dari hasil penelitian didapatkan nilai stabilitas dengan rendaman kotoran sapi yaitu 1181,93 kg, stabilitas terbaik untuk LDPE pada persentase 6% dengan cara basah 2213,72. Nilai parameter untuk tanpa dan dengan substitusi LDPE yang dihasilkan berupa stabilitas, flow, MQ, density, VIM, VMA, dan VFA masih memenuhi persyaratan spesifikasi Bina Marga tahun 2014. Kata kunci: Laston Lapis Aus, Limbah Plastik LDPE, Rendaman Kotoran Sapi.  Abstract High road surface temperatures, rainfall, and traffic loads are some of the causes of asphalt layer damage. On roads in the Aceh, you can find cow dung scattered on the road. Cow dung contains a lot of nutrients and a fairly high water content and can be suspected as a factor causing road pavement damage. One way to overcome the damage to the pavement is to modify the asphalt using added materials, namely polymers. The polymer used is Low-Density Polyethylene (LDPE) plastic waste as a substitute for asphalt. The main purpose of this study was to determine the characteristics of the marshall mixture of Laston (AC-WC) with the addition of 2%, 4%, and 6% LDPE plastic waste slices on the asphalt pen. 60/70 on the weight of asphalt, as well as knowing the effect of soaking cow dung and urine with variations in time of 30 minutes, 24 hours, and 48 hours on the stability of LDPE modified asphalt. From the results of the study, it was found that the stability value with cow dung bath was 1181.93 kg, the best stability for LDPE was at a percentage of 6% by wet method 2213.72. Parameter values for without and with substitution of LDPE produced in the form of stability, flow, MQ, density, VIM, VMA, and VFA still meet the requirements of the 2014 Highways specification. Keywords: Laston Lapis Aus, LDPE Plastic Waste, Cow Manure Soak. 
Evaluasi Kerusakan Perkerasan Jalan Perkotaan Berdasarkan Metode Pavement Condition Index (PCI) (Studi Kasus: Ruas Jalan Malikul Adil, Kota Langsa) Ari Juanda; Muammar, Rajib; Sabilla, Arissa
Jurnal Perencanaan dan Penelitian Teknik Sipil Vol 4 No 3 (2025): November
Publisher : Universitas Iskandar Muda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55616/prince.v4i3.1070

Abstract

Reliable road infrastructure is a vital component for regional connectivity; however, pavement distress on Malikul Adil Street, Langsa City, has emerged as a critical issue that disrupts local transportation efficiency. This study aims to systematically identify existing distress types and quantitatively assess the pavement condition. The study employed a visual survey method using the Pavement Condition Index (PCI) in accordance with the ASTM D6433 standard to provide an objective evaluation. Data were collected by observing and measuring the type, severity, and quantity of distress such as cracking, distortion, and disintegration on sample units along the road section. The analysis yielded an average PCI score of 16.8. According to standard rating scales, this score classifies the road's condition as 'very poor', indicating severe and widespread structural damage that compromises both the safety and comfort of its users. Potholes and raveling were identified as the most dominant distress types, with severity levels ranging from medium to high (M-H). These findings provide a comprehensive and measurable overview of the pavement's actual condition. Practically, this study provides a valid empirical basis for policymakers to establish priorities and devise more effective, efficient, and targeted highway maintenance programs.
Mineral Content of Clay Soil and Coffee Husk Ash for Soil Stabilization Applications in Geotechnical Engineering Sabilla, Arissa; Muammar, Rajib; Juanda, Ari
Justek : Jurnal Sains dan Teknologi Vol 8, No 4 (2025): December
Publisher : Unversitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/justek.v8i4.35345

Abstract

This study aims to analyze the mineral composition of clay soil and coffee husk ash, as well as to evaluate the effect of coffee husk ash as a stabilizing agent for clay soil. The main problem addressed is the high plasticity of clay soil, which causes volume changes and reduces bearing capacity, making stabilization methods necessary. The research was conducted by collecting clay soil samples from Kebun Kurma Barbate, Aceh Besar, and coffee husk ash from Aceh Tengah. Mineral composition was analyzed using gravimetric, titrimetric, spectrophotometric, and AAS methods, while soil plasticity was examined through Atterberg limits and specific gravity tests. The results indicate that clay soil contains dominant Silica Oxide (SiO₂) at 42.99% and Aluminum Oxide (Al₂O₃) at 5.63%, contributing to its high plasticity. Meanwhile, coffee husk ash contains 8.30% SiO₂ and 5.22% Calcium Oxide (CaO), which play crucial roles in stabilization. The addition of 5– 25% coffee husk ash reduced the plasticity index from 38.42% to 34.29%, increased soil specific gravity from 2.587 g/cm³ to 2.690 g/cm³, and transformed soil classification from clay to silt. These findings confirm the potential of coffee husk ash as an effective, and sustainable stabilizing material for geotechnical engineering applications
Co-Authors Ari Juanda Iqbal Iqbal Juanda, Ari Rikza Rizki Damayanti, Rizki Sabilla, Arissa Sinurat, Dian Aswatul Siregar, Putri Fikadilah Sofyan M. Saleh Yosantia, Muhammad Ferah Yunus, Yuhanis