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All Journal IPTEK The Journal of Engineering Jurnal Aplikasi Teknik Sipil Conference Proceeding on Waste Treatment Technology
Ridho Bayuaji
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Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering Mechanical Engineering

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Material Inovatif Ramah Lingkungan: Pemanfaatan Komposit Abu Serabut Kelapa dan Fly Ash pada Pasta Semen Ridho Bayuaji; Riky Wahyu Kurniawan; Abdul Karim Yasin; Herta Ahsani Takwim; Faizah Maulidya Afifah
Jurnal Aplikasi Teknik Sipil Vol 13, No 1 (2015)
Publisher : Departemen Teknik Infrastruktur Sipil Institut Teknologi Sepuluh Nopember Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (476.538 KB) | DOI: 10.12962/j12345678.v13i1.1590

Abstract

Indonesia memiliki kekayaan material lokal yang berlimpah dan belum dimanfaatkan secara maksimal pada teknologi beton. Beton adalah material utama di bidang konstruksi. Konsep utama material beton tersusun dari bahan pengikat dan pengisi. Semen, bahan pengikat utama beton yang disorot oleh pemerhati lingkungan sebagai salah industri yang tidak ramah lingkungan oleh karena pembakaran bahan baku semen di kiln memerlukan energi sampai dengan suhu 1450o C dan keluarannya adalah limbah udara CO2. Di sisi lain, senyawa kandungan semen yang dapat dimanfaatkan dalam inovasi adalah Kalsium Hidroksida (CaOH), senyawa ini akan bereaksi dengan material pozzolan dan menghasilkan produk kekuatan dan keawetan tambahan pada beton, Kalsium Silikat Hidrat (C-S-H). Material pozzolan yang akan diteliti adalah abu serabut kelapa dan fly ash sebagai bahan pozzolan komposit pada kekuatan pasta semen dengan standar SNI-03-1974-1990 pada umur hidrasi 3 dan 7 hari. Hasil penelitian ini memberi kesimpulan bahwa komposisi optimum komposit limbah sabut kelapa dan fly ash berhasil mensubtitusi 30% semen dengan komposisi: 25% abu serabut kelapa dan 5% fly ash.
Performance of Workability and Compressive Strength on Self-Compacting Geopolymer Concrete Based On High-Calcium Fly Ash With Addictive Admixture Yuyun Tajunnisa; Nur Achmad Husin; Sigit Darmawan; Ridho Bayuaji; Raden Buyung Darmawan; Arwinda Aribah Cahyani
IPTEK The Journal of Engineering Vol 9, No 1 (2023)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23378557.v9i1.a16237

Abstract

Geopolymer concrete has been developed as a replacement for conventional concrete with other pozzolan materials, which have a high silicate alumina content. Fly ash is a material that contains a high silicate alumina of 22%. The high content of Al and Si increases the compressive strength of concrete. High-calcium fly ash is abundantly found in Indonesia. However, it has not been widely used for industry or research, and this is due to the fast hardening time of concrete. Therefore, it has the potential to be developed. High-quality concrete has a low cement water factor that causes low workability in concrete. Self-compacting geopolymer concrete (SCGC) has been developed as a high-quality concrete innovation with high workability. Concrete is produced by using gravel, sand, fly ash, alkaline activator, and water materials. This study used 14 Molar levels of NaOH. The variations used were 0%, 3%, 5%, and 7% superplasticizers (SP) made from polycarboxylate. This study used a dry mixing method to overcome the setting time on concrete. The results show that the workability that can be achieved is 645mm, and the compressive strength achieved is 41.7 Mpa
Performance based design of Hospital Building in Surabaya under variety design alternative using SNI 1726-2019 – Case study: Redesign Building Sigit Darmawan; Raden Buyung Darmawan; Ridho Bayuaji; Yuyun Tajunnisa; Indra Komara; Sita Auliyah Rahmasari
IPTEK The Journal of Engineering Vol 9, No 2 (2023)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23378557.v9i2.a16231

Abstract

Nowadays, At the present time, the occurrence of regular earthquakes all over the world is turning into a significant problem. The structures that make up hospitals are among the most significant buildings in a living society because, in the event that a potentially dangerous scenario emerges, they help to serve as a caring and healing unit for the human population. A hospital building is made up of three different components: the structural component, the non-structural component, and the functional component. Each of these components can have an effect, either directly or indirectly, on the management and operation of the hospital building. Each time a natural or non-natural cause causes devastation and disaster, the globe suffers. In such cases, hospital buildings are vital in term of treating victims and injured persons, and housing those who lost their homes. Therefore, hospital facilities should be planned and constructed with enough stiffness and strength to resist disasters and serve as shelters or housing units afterward. This study analyses a hospital in area of Surabaya which built using Indonesian standard provision SNI 1726-2012. Weak structural members of the hospital are identified. The analysis determined to study the behaviour of hospital building when subjected to seismic forces using ETABS using current provision SNI 1726-2019. The investigation determined that the effect of the lateral forces under P-delta effect on the hospital building. Two different conditions have been compared, e.g., existing model and alternative configuration using dual system method to determining the recommendation for current building to resist seismic forces under new regulation. As a result, existing structure of hospital building still meet the requirements, but to fill the condition in accordance with SNI 1726-2019, some modifications need to be improved.
Workability Analysis of 3D Printing Materials for Applications in The Construction Industry Yuyun Tajunnisa; Ridho Bayuaji; Hendro Nurhadi; Beta Rahayuning Pratiwi
IPTEK The Journal of Engineering Vol 9, No 2 (2023)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23378557.v9i2.a16185

Abstract

The development of 3D Printing machine technology as a printing tool that uses an additive manufacturing method system with the aim of producing a three-dimensional (3D) object or object according to the default digital design file. 3D Printing was created to facilitate construction work, with 3D Printing construction work becoming lighter because this tool saves time, and costs, and reduces the risk of work accidents. With 3D Printing, work runs quickly and avoids problems in the development process. In the last few decades, many developed countries have used 3D Printing technology in making buildings. The 3D printing process basically consists of three different stages namely, data preparation, material preparation and transfer to the printer, and the printing stage. In the data preparation stage, the components are designed as 3D CAD models, then converted to STL (Stereolithography) format and sliced with the desired layer depth. The preparation of concrete involves mixing and placing it into a container. Once fresh concrete has been placed into the container, it can be channeled smoothly through a pump-pipe-nozzle system to print self-compacting concrete filaments, which build structural components layer by layer. The material used in this 3D printing method was Portland cement where this cement is easy to find among the public. Portland cement itself is the cement that is commonly used as a basic material for making concrete, plaster, mortar, and non-specialized mortar. In addition, fly ash and silica fumes are also added as a mixture. The addition of silica fumes increases the compressive strength of concrete. Furthermore, the addition of fly ash to the concrete has the effect of reducing drying shrinkage; but reducing the compressive strength of the concrete. In this study, the author focuses on the workability of 3D Printing concrete materials, and the impact of the material was added with additional type C fly ash and silica fume, namely flowability. The result is a concrete mix design that has good flowability value to be applied to the 3D Printing method
Identifikasi Potensi Pemanfaatan Limbah Karbit dan Abu Sekam Padi sebagai Bahan Alternatif Pengganti Semen Lita Finnysia Aprida; Denny Dermawan; Ridho Bayuaji
Conference Proceeding on Waste Treatment Technology Vol. 1 No. 1 (2018): Conference Proceeding on Waste Treatment Technology
Publisher : Politeknik Perkapalan Negeri Surabaya

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Abstract

Limbah karbit merupakan limbah B3 (Bahan Berbahaya dan Beracun) dari proses produksi gas asetilen sehingga, memiliki dampak bahaya bagi karyawan ataupun lingkungan disekitar tempat produksi. Limbah karbit yang mengandung CaO dan silika (SiO2) yang tinggi sehingga diidentifikasi dapat digunakan sebagai bahan pengganti semen pada pembuatan beton. Selain itu, limbah abu sekam padi dianggap bisa digunakan sebagai campuran bahan bangunan karena juga mengandung silika (SiO2) yang tinggi. Oleh karena itu, perlu dilakukan identifikasi karakteristik limbah karbit dan abu sekam padi sebagai upaya pemanfaatan keduanya. Tujuan dari penelitian ini yaitu untuk mengidentifikasi karakteristik limbah karbit dan abu sekam padi sebagai bahan alternatif pengganti semen. Pada penelitian ini pengujian kandungan dari limbah karbit dan abu sekam padi menggunakan metode XRF (X-ray Fluorescene). Hasil dari penelitian ini menunjukkan bahwa kandungan dari limbah karbit yaitu CaO 95,37%, SiO2 0,94%, Al2O3 0,61% dan Fe 0,48%. Kandungan dari abu sekam padi yaitu SiO2 80,4%, Fe2O3 10,4%, CaO 5% dan K2O 2,89 %. Kandungan CaO yang tinggi pada limbah karbit dan kandungan SiO2 yang tinggi pada abu sekam, mengindikasikan bahwa kedua jenis limbah dapat dimanfaatkan sebagai alternatif pengganti semen.
Uji Campuran Bahan Limbah Karbit Terhadap Nilai Setting Time Afifah Diyah Nur'aini; Denny Dermawan; Ridho Bayuaji
Conference Proceeding on Waste Treatment Technology Vol. 1 No. 1 (2018): Conference Proceeding on Waste Treatment Technology
Publisher : Politeknik Perkapalan Negeri Surabaya

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Abstract

Limbah karbit adalah limbah dari produksi pembuatan gas asetilen yang berasal dari reaksi antara karbit dan air. Limbah karbit di golongkan dalam jenis kapur padam karena memiliki sifat-sifat kapur untuk bahan bangunan sesuai dengan SII 0024-80. PP No 101 Tahun 2014 menyatakan bahwa limbah karbit merupakan limbah berbahaya dengan kategori bahaya kronis. Pengujian kualitas dan kelayakan bahan limbah karbit yang akan digunakan sebagai bahan bangunan dapat dilakukan dengan pengujian setting time. Pengujian setting time dilakukan dengan menggunakan jarum vicat. Setting time terdiri dari setting time awal dan setting time akhir. Penelitian ini menggunakan 4 variabel yaitu menggunakan semen, air dan limbah karbit, dengan prosentase limbah karbit sebesar 0%; 2,5%; 5%; dan 7,5%. Berdasarkan hasil percobaan didapatkan nilai setting time awal dan akhir secara berturut-turut yaitu 77,5 menit; 75,75 menit; 73 menit ; dan 67,5 menit serta untuk nilai pengikat akhirnya yaitu 135 menit, 120 menit, 115 menit, dan 105 menit. Berdasarkan data tersebut didapatkan waktu pengikatan dan pengerasan yang akan berlangsung semakin cepat seiring dengan bertambahnya limbah karbit yang digunakan.
Identifikasi Komposisi Limbah Karbit dan Pengaruh Penambahan Limbah Karbit Terhadap Uji Waktu Ikat Semen (Uji Setting Time) Nuris Sidah Perdana; Moch. Luqman Ashari; Ridho Bayuaji
Conference Proceeding on Waste Treatment Technology Vol. 1 No. 1 (2018): Conference Proceeding on Waste Treatment Technology
Publisher : Politeknik Perkapalan Negeri Surabaya

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Abstract

Limbah karbit merupakan limbah yang dihasilkan dari unit pembuatan gas acetylene pada salah satu industry gas di daerah Gresik. Gas acetylene diproduksi dengan mereaksikan kalsium karbida dengan air, sehingga menghasilkan gas acetylene dan meninggalkan endapan karbit yang berwujud slurry. Penelitian ini bertujuan untuk menganalisa komposisi kimia yang terdapat dalam limbah karbit dan pengaruhnya terhadap uji waktu ikat semen. Analisa dilakukan dengan menggunakan X-Ray Flourescene (XRF). Hasil uji XRF menunjukkan bahwa komposisi limbah karbitterdiri dari senyawa Al2O3 sebear 0.61%, SiO2 0,94%, SO3 0,3%, CaO 95,37%, Fe2O3 0,48%, Y2O3 0,25% dan MoO3 sebesar 2,1%. Uji waktu ikat semen (uji setting time) bertujuan untuk mengetahui waktu ikat awal dan waktu ikat akhir semen. Hasil uji waktu ikat awal dan waktu ikat akhir penambahan limbah karbit sebesar 0% terhadap pengurangan semen adalah pada menit ke 77,5 dan 135 , penambahan 10% terjadi pada menit ke 60 dan 135, penambahan 20% terjadi pada menit ke 35 dan 105, penambahan 30% terjadi pada menit ke 22,5 dan 90.
Co-Authors Abdul Karim Yasin Afifah Diyah Nur'aini Arwinda Aribah Cahyani Beta Rahayuning Pratiwi Denny Dermawan Faizah Maulidya Afifah Hendro Nurhadi Herta Ahsani Takwim Indra Komara Lita Finnysia Aprida Moch. Luqman Ashari Nur Achmad Husin Nuris Sidah Perdana Raden Buyung Darmawan Riky Wahyu Kurniawan Sigit Darmawan Sigit Darmawan Sita Auliyah Rahmasari Yuyun Tajunnisa