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All Journal JITEK (Jurnal Ilmiah Teknosains) JMPM (Jurnal Material dan Proses Manufaktur) Civil Engineering Dimension JOURNAL OF CIVIL ENGINEERING, BUILDING AND TRANSPORTATION The Spirit of Society Journal : International Journal of Society Development and Engagement Jurnal Aplikasi Teknik Sipil Astonjadro Jurnal Ilmiah Rekayasa Sipil Jurnal Riset Rekayasa Sipil Jurnal ABDINUS : Jurnal Pengabdian Nusantara Media Komunikasi Dunia Ilmu Sipil (MoDuluS) Jurnal Abdi Masyarakat Saburai (JAMS) E-Jurnal SPIRIT PRO PATRIA Jurnal Pengabdian Masyarakat untuk Negeri (UN-PENMAS) Jurnal Civil Engineering Study Jurnal Akademik Pengabdian Masyarakat ENVIRO: Journal of Tropical Environmental Research International Journal of Sustainable Building, Infrastructure and Environment
Hendramawat Aski Safarizki
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Agriculture, Biological Sciences & Forestry Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mechanical Engineering Social Sciences Transportation Veterinary Other

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A Change in the Indeks of Retained Strength in the AC-WC Mixture with the Additional Waste Rubber from Used Tires (Crumb Rubber) Hidayat, Kurniawan; Pristyawati, Tantin; Safarizki, Hendramawat Aski
JMPM (Jurnal Material dan Proses Manufaktur) Vol. 7 No. 1 (2023): June
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v7i1.16911

Abstract

The growth of the number of motorized vehicles in Indonesia every year always increases. The consequence of the growth in the number of motorized vehicles is the increasing production of motorized vehicle tires which results in the accumulation of used tire waste. One of the innovations to reduce the waste of used tire rubber is to use it in asphalt mixtures. The study was conducted to determine the change in the index of retained strength in the Asphalt Concrete – Wearing Coarse (AC-WC), is the top layer of pavement which functions as the wear layer,  mixture with the addition of waste rubber from used tires (crumb rubber) meeting the Bina Marga Specifications. The results showed that the addition of waste rubber tires affected the marshall characteristics, namely, the highest specific gravity, density, Voids Filled With Asphalt (VFA), and stability values were at a level of 1%, while the highest values of Voids in Mix (VIM), Void in Mineral Agregate (VMA), and flow were at a level of 9%. From the index of retained strength test, it shows that water affects the durability of the AC-WC mixture, as evidenced by the highest value at the duration of immersion for 24 hours with a concentration of 1%, which de-creases with increasing duration of immersion. The addition of used tire rubber waste (crumb rubber) to the AC-WC mixture has met the Bina Marga Specifications on the Marshall characteristics test, but the change in the index of retained strength was only for a 24-hour immersion duration, while for other durations were not according the Bina Marga Specifications.
Analysis Model of Pedestrian Facilities as a Support for Sustainable Transportation System in Jakarta Bawono, Bagas Dwi; Mudjanarko, Sri Wiwoho; Safarizki, Hendramawat Aski
THE SPIRIT OF SOCIETY JOURNAL : International Journal of Society Development and Engagement Vol 9 No 1: September 2025
Publisher : LPPM of NAROTAMA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29138/scj.v9i1.3549

Abstract

Jakarta, with its various urban challenges, requires integrated solutions. Transportation issues are one of the most crucial aspects to address. The interaction between its various elements must be carefully planned, one of which is pedestrian infrastructure. This study aims to analyze the role of pedestrian facilities as an integral part of the sustainable transportation system in Jakarta, identify related problems, and develop a pedestrian facility model that supports the use of sustainable transportation modes. Using a qualitative descriptive method, this study applies Partial Least Squares-Structural Equation Modeling (PLS-SEM) to evaluate the relationship between pedestrian infrastructure conditions and public preference in using environmentally friendly transportation modes. The infrastructure issues in Jakarta regarding carbon emission reduction, urban mobility enhancement, and the integration of pedestrian planning with technological advancements, such as autonomous vehicles, are discussed. Data were collected through surveys and literature studies. The analysis results on the relationship and influence of pedestrian facility models on the sustainable transportation system show that Model B (technology-based pedestrian facilities) has a t-statistic value of 7.863 and a P-value of 0.000, which is significantly higher than Model A (social-based pedestrian facilities) with a t-statistic value of 3.259 and a P-value of 0.001. The analysis of pedestrian facility models on user satisfaction shows similar results, where Model B has a t-statistic of 7.863 and a P-value of 0.000, compared to Model A's t-statistic of 3.259 and a P-value of 0.001. This conclusion indicates that technology-based pedestrian facilities are more favored by users.
Thermoplastic Waste Composite Brick As An Environmentally Friendly Material Safarizki, Hendramawat Aski; Ristanto, Iwan; Sangadji, Senot; Karno, Muhammad Febrialdi; Dewi, Amelia Putri
ASTONJADRO Vol. 15 No. 1 (2026): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v15i1.21105

Abstract

The background of this research is that plastic waste is abundantly available around us and has not been optimally utilized. Pedestrian which is also the right of pedestrians with disabilities has not been well organized in Indonesia. The use of plastic waste materials is an alternative to solving environmental problems. The utilization of plastic as a substitute for cement will also reduce the carbon effect of cement as a building material. With its light weight when compared to disabled terrazzo tiles on the market, it is hoped that it can facilitate the application of smart pedestrian blocks as pedestrian paths and disabilities. The purpose of this research is the utilization of plastic waste as used as composite thermoplastic waste brick as well as an alternative eco friendly material. The experimental method used normal paving, 45% plastic waste, 55% plastic waste, and 65% plastic waste. The test results show that the average compressive strength for paving with 45% plastic waste has a compressive strength of 9.16 MPa higher than normal paving which is only 8.56 MPa. This shows that the use of 45% plastic waste as an effective substitute for cement in paving is also an environmentally friendly solution. In addition to reducing plastic waste, it also reduces the need for cement.
Concrete Compressive Strength Study with Anadara granosa Shell Waste as a Replacement for Part of Cement Safarizki, Hendramawat Aski
International Journal of Sustainable Building, Infrastructure and Environment (IJOSBIE) Vol 1, No 1 (2020)
Publisher : Science and Technology Research Centre, Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/ijosbie.v1i1.5491

Abstract

Concrete is the main component of construction materials in Indonesia. Concrete composition materials consist of cement, sand, gravel, and water. Cement production in Indonesia in fact often causes polemic in the community. The community often complains of environmental pollution resulting in the cement production process. Shellfish from various mollusks like that are available abundantly along the coastal areas in Indonesia. Blood clam (Anadara granosa) is one of the many shells found in Indonesian waters and is consumed by many people because of its high protein content. Shells are part of the clam that cannot be consumed so they only accumulate into household waste. Seashell waste can be an environmental problem if not handled properly. The conch shell contains lime, silicate and alumina. The aim of this study was to determine the effect of the Anadara granosa shell as a substitute for a portion of cement in the manufacture of normal concrete. Stages of research conducted in the form of making normal concrete without any added material, making concrete with Anadara granosa shell as a partial replacement for cement, and testing the compressive strength of normal concrete samples. The optimum level of Anadara granosa shell waste as a substitute material for a portion of normal mixed concrete cement is 3% of the weight of cement used. The optimum compressive strength of concrete with Blood Shells waste as a substitute for some cement is at 30.62 MPa. The effect of Anadara granosa shell as a partial cement substitute in making normal concrete can reduce the compressive strength along with the addition of Anadara granosa shell as a partial cement substitute. Keywords: blood shells, cement, compressive strength, concrete
Risk Management Analysis of Construction Projects on Time Performance Al Matin, Muhammad Ma'ruf; Firdausi, Annisa Azhar; Safarizki, Hendramawat Aski
International Journal of Sustainable Building, Infrastructure and Environment (IJOSBIE) Vol 3, No 2 (2022)
Publisher : Science and Technology Research Centre, Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/ijosbie.v3i2.13460

Abstract

Project risk is an uncertain situation in a project so that it can lead to consequences that can hinder the achievement of the main project objectives. Risks to the project need to be identified and analyzed in order for the project to run well. The Hidayatul Qur'an Lissa'adah Islamic Boarding School construction project is a self-managed construction project that experienced delays in its implementation time based on the results of observations and preliminary interviews with the development committee. With risk management aims to identify and reduce the risks that occur in the implementation of the Hidayatul Qur'an Lissa'adah Islamic Boarding School construction project so that the project can be completed immediately. Project delays cannot be separated from the existence of several risks that cannot be avoided, but can be minimized by risk management. In this study, identification with the Cochran q-test was carried out on the risks to determine the risks that greatly affect delays in the project, then carried out an analysis of the risks that occurred with the saverity index and then carried out appropriate mitigation actions against these risks, so that the project could be completed immediately. Based on tests and calculations using the Cochran q-test and saverity index. The results obtained through this study are that there are 4 dominant risks in the medium and high categories, namely the risk of incorrect or incomplete design (11.39%), the risk of cash flow congestion (11.39%), the risk of problematic service providers (20.25 %) and the risk of the covid pandemic outbreak (31.64%).
BETON RAMAH LINGKUNGAN DENGAN ABU SEKAM PADI SEBAGAI PENGGANTI SEBAGIAN SEMEN PADA ERA NEW NORMAL Safarizki, Hendramawat Aski; Marwahyudi, Marwahyudi; Pamungkas, Wahyu Aji
Jurnal Riset Rekayasa Sipil Vol 4, No 2 (2021): Maret 2021
Publisher : Prodi Teknik Sipil Fakultas Teknik Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (315.751 KB) | DOI: 10.20961/jrrs.v4i2.42978

Abstract

Dalam era new normal ini terjadi perlambatan kegiatan konstruksi di Indonesia. Hal ini disebabkan pengaruh arus transportasi barang material konstruksi yang terhambat. Beton merupakan komponen utama dalam suatu bangunan terutama pada bagian struktur. Bahan penyusun beton terus mengalami perkembangan dan transformasi sesuai perkembangan jaman. Pengembangan inovasi komponen beton perlu dilakukan untuk mengikuti kondisi yang ada saat ini guna mengurangi pemakaian semen yang berlebihan. Seperti yang kita ketahui bahwa proses pembuatan semen menghasilkan panas yng cukup tinggi. Pengurangan panas ini dilakukan dengan pengurangan pemakaian semen yang berlebihan. Salah sayu cara dengan pemanfaatan abu sekam padi. Pemanfaatan abu sekam padi untuk campuran beton dapat dijadikan alternatif ramah lingkungan dalam kondisi era new normal saat ini. Berapa komposisi penambahan optimum abu sekam padi untuk mencapai kuat tekan optimum beton adalah tujuan dari penelitian ini. Agar penelitian ini berjalan sesuai rencana maka diperlukan metode penelitian. Metode yang di gunakan adalah penelitian destruktif laboratoris mengunakan sampel benda uji. Pembuatan bendauji dibedakan berdasarkan kadar yang sudah ditentukan. Penggunaan kadar abu sekam padi untuk campuran beton yang digunakan adalah 8%, 9%, 10%, 11%, dan 12%. Sampel silinder beton benda uji pada penelitian iniberukuran diameter 15 cm dan tinggi 30 cm dimana pengujiandilakukan pada umur silinder beton 28 hari. Hasil analisis menunjukan beton abu sekam adanya peningkatan kuat tekan pada variasi kadar abu sekam padi  10% menjadi 25,70 MPa dibandingkan beton normal tanpa sekam padi sebesar 22,39 MPa. Dapat disimpulkan bahwa penggunaan abu sekam padi dapat mengurangi jumlah semen pada campuran beton untuk mencapai kuat tekan yang lebih tinggi.
Pengaruh Penggunaan Limbah Plastik Pet dan Styrofoam Untuk Pembuatan Batafoam (Eco-Brick) Dengan Substitusi Serbuk Kapur Terhadap Reduksi Limbah Di Surakarta Hendrata, Jonathan Anugrah; Handayani, Dewi; Safarizki, Hendramawat Aski; Ilonka, Willy Anastasya
ENVIRO: Journal of Tropical Environmental Research Vol 26, No 2 (2024): September
Publisher : Center for Environmental Research, LPPM, Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/enviro.v26i2.99707

Abstract

Dalam industri modern yang semakin sadar akan lingkungan, sektor konstruksi menghadapi tekanan untuk mengadopsi praktik yang lebih ramah lingkungan. Konsep ramah lingkungan mengacu pada penggunaan limbah sebagai material penyusun bahan konstruksi. Menurut Badan Pusat Statistik Surakarta, total sampah yang dihasilkan pada tahun 2023 sebesar 120.011,77 ton, 13% diantaranya terdiri dari sampah plastik atau sekitar 15.601,53 ton. Untuk itu diperlukan pengolahan limbah sebagai alternatif bahan konstruksi, sehingga penelitian ini bertujuan mendapatkan besar pengaruh pengurangan limbah plastik pada pembuatan batako. Rencana penelitian ini melakukan eksperimen dengan memanfaatkan limbah plastik Polyethylene Terephthalat (PET) dan plastik polystyrene (styrofoam) sebagai substitusi agregat halus serta menambahkan serbuk batu kapur sebagai substitusi semen. Penelitian ini menggunakan inovasi material plastik PET 5%, serbuk kapur 9%, dan variasi styrofoam 0%; 0,25%; 0,5%; 0,75%; dan 1%. Dari hasil pengujian didapat kuat tekan optimal sebesar 8,28 MPa atau 84,43 kg/cm2 dengan komposisi inovasi material plastik PET 5%, styrofoam 0,5%, serta serbuk kapur 9%. Nilai daya serap yang optimal diperoleh sebesar 2,12% dengan komposisi inovasi material plastik PET 5%, styrofoam 0,25%, serta serbuk kapur 9%. Dari penelitian yang dilakukan, jumlah pengurangan limbah plastik PET dan styrofoam sebesar 23,235% atau sekitar 3.624,962 ton dari jumlah sampah plastik yang berada di Surakarta.
Pengaruh Penambahan Limbah Serbuk Kayu dan Limbah Serbuk Keramik Terhadap Kuat Tekan dan Daya Serap Air Paving Block Fadhilah, Rifqi Adam; Handayani, Dewi; Safarizki, Hendramawat Aski; Ilonka, Willy Anastasya
ENVIRO: Journal of Tropical Environmental Research Vol 26, No 1 (2024): March
Publisher : Center for Environmental Research, LPPM, Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/enviro.v26i1.93076

Abstract

Perkembangan dalam bidang kosntruksi mengalami kemajuan yang pesat. Perkembangan tersebut meningkatkan kebutuhan akan bahan bangunan. Bahan bangunan seperti paving block merupakan salah satu bahan bangunan yang biasanya di buat menggunakan bahan alam. Perkembangan teknologi memungkinkan pembuatan bahan bangunan dengan memanfaatkan limbah. Pemanfaatan limbah serbuk kayu dan serbuk keramik sebagai subtitusi agregat halus dalam pembuatan paving block diharapkan dapat mengurangi eksploitasi penggunaan bahan alam. Penelitian ini bertujuan untuk mengetahui kuat tekan dan daya serap paving block berbahan limbah serbuk kayu dan serbuk keramik sebagai subtitusi agregat halus. Menggunakan metode eksperimen dengan limbah serbuk kayu sebanyak 2,5%, 5%, 7,5%, 10%, dan 12,5% dari berat pasir dan limbah serbuk keramik 30% dari berat pasir. Didapatkan nilai kuat tekan tertinggi sebesar 10 MPa campuran limbah serbuk keramik 30% dan limba serbuk kayu 10%. Daya serap terendah sebesar 10,44% campuran limba serbuk keramik 30% dan limba serbuk kayu 12,5%.
Co-Authors Abdillah, Zuhairidil Achmad, Imron Ramdhani Agung Wibawa Ahmad Hidayawan Ahmad Hidayawan, Ahmad Al Matin, Muhammad Ma'ruf ANDRI KURNIAWAN Anissa Diyah Lestari Anissa Diyah Lestari Annas Saiful Rohman Annisa Azhar Firdausi Ariyanto Arum Narwastu Bagas Wahyu Adhi, Bagas Wahyu Basori Basori Bawono, Bagas Dwi Beni Setiyanto Bin Arshad, Mohd Fadzil Daru Wahyuningsih Devi, Rida Handiana Dewi Handayani Dewi, Amelia Putri Dhonna meylida Dyah Julia Syifa Dyah Julia Syifa Edy Purwanto Eko Nurmianto Endang Widiyastuti Fa-izah, Aprilina Nur Fadhilah, Rifqi Adam Febriyanto, Wahyu Fery Firmansah Firdaus Pratama Wiwoho, Firdaus Pratama Guruh Aryotejo, Guruh Hardian Ningsih, Hardian Harmanto, Dani Hendrata, Jonathan Anugrah Hery Purwanto Hidayat, Kurniawan I Putu Artaya Ilonka, Willy Anastasya Iwan Ristanto Karno, Muhammad Febrialdi Lestari, Mathilda Sri Listiana, Icho Dharma Tri Luky Indra Gunawan Maruli, Sahat Marwahyudi Marwahyudi Marwahyudi Marwahyudi Mayestino, Alexander Machicky Muflih, Ahadin Banu Muhammad Aksan Muhammad Malik Hakim, Muhammad Malik Mulyadi, Irwan Nawir Rasidi Norhidayati Pamungkas, Wahyu Aji Pandji Thoha S. Balido Pandu Dimas Gumilang Paryanto, Edi Putra, Imam Prasetyo Azhari Putri Pramudya Wardani Rachmawatie, Srie Juli Raden Kunto Adi, Raden Kunto Rida Handiana Devi Rizal Bahaswan Ronny Wahyu Wibowo Senot Sangadji Senot Sangadji, Senot Setiyanto, Beni Setyono, Wahyu Sri Wiwoho Mudjanarko, Sri Wiwoho Stefanus Adi Kristiawan Sulthon, Aufa Hanif Abiyyu Supriyanto, Rahmat Susilowati Syahputra, Hanif Nanda Tantin Pristyawati Tjahjono, Prijo Yosse Rizal