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Ridho Bayuaji
Departemen Teknik Infrastruktur Sipil Institut Teknologi Sepuluh Nopember
Aerospace Engineering Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mathematics Public Health Social Sciences Other

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Thermal Energy Storage Optimization in Shopping Center Buildings Biyanto, Totok R.; Alhikami, Akhmad F.; Nugroho, Gunawan; Hantoro, Ridho; Bayuaji, Ridho; Firmanto, Hudiyo; Waluyo, Joko; Sonhaji, Agus Imam
Journal of Engineering and Technological Sciences Vol 47, No 5 (2015)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (419.021 KB) | DOI: 10.5614/j.eng.technol.sci.2015.47.5.7

Abstract

In this research, cooling system optimization using thermal energy storage (TES) in shopping center buildings was investigated. Cooling systems in commercial buildings account for up to 50% of their total energy consumption. This incurs high electricity costs related to the tariffs determined by the Indonesian government with the price during peak hours up to twice higher than during off-peak hours. Considering the problem, shifting the use of electrical load away from peak hours is desirable. This may be achieved by using a cooling system with TES. In a TES system, a chiller produces cold water to provide the required cooling load and saves it to a storage tank. Heat loss in the storage tank has to be considered because greater heat loss requires additional chiller capacity and investment costs. Optimization of the cooling system was done by minimizing the combination of chiller capacity, cooling load and heat loss using simplex linear programming. The results showed that up to 20% electricity cost savings can be achieved for a standalone shopping center building.
Model Jaringan Saraf Tiruan Kuat Tekan Beton Porus dengan Material Pengisi Pasir Bayuaji, Ridho; Biyanto, Totok R.
Jurnal Teknik Sipil Vol 20, No 1 (2013)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2219.452 KB)

Abstract

Abstrak. Beton porus adalah salah satu beton ringan dan bentuk dasarnya merupakan perpaduan antara pasir, semen, air (campuran dasar) dan foam (biasanya 0,1-1,0 mm diameter). Penelitian ini difokuskan pada aplikasi jaringan saraf tiruan (JST) untuk memprediksi kuat tekan beton porus. Metode JST dapat menangkap interaksi yang kompleks antara variabel input/output dalam suatu sistem tanpa pengetahuan sebelumnya dari sifat interaksi dan tanpa harus secara eksplisit mengasumsikan bentuk model. Makalah ini menjelaskan data penelitian yang ada, seleksi data dan proses pelatihan model JST, dan validasi. Hasil penelitian menunjukkan bahwa kuat tekan beton porus dapat diprediksi lebih akurat, mudah dan cepat dari densitas beton porus, rasio pasir dan semen dan distribusi ukuran partikel pasir.Abstract. Foamed concrete is one of light concrete and its basic form is a blend of sand, cement, water (the base mix) and a pre-formed foam (usually 0.1 to 1.0 mm in diameter). This research focus on application of artificial neural networks (ANN) to predict the compressive strength of foamed concrete mixtures. The ANN method can capture complex interactions among input/output variables in a system without any prior knowledge of the nature of these interactions and without having to explicitly assume a model form. Indeed, such a model form is generated by the data points themselves. This paper describes the database assembled, the selection and training process of the ANN model, and its validation. Results showed compressive strength of foamed concrete can be predicted much accurately, easy and fast from density of foamed concrete, sand and cement ratio and particle size distribution of sand.
EFEK PENGARUH RASIO SEMEN DAN PASIR PADA KEKUATAN BETON PORUS SEBAGAI MATERIAL BATU BATA Bayuaji, Ridho
Kern : Jurnal Ilmiah Teknik Sipil Vol 4, No 1 (2014): KERN : Jurnal Ilmiah Teknik Sipil
Publisher : Kern : Jurnal Ilmiah Teknik Sipil

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Abstract

Penelitian ini mengeksplorasi penggunaan busa udara stabil untuk menghasilkan beton ringan,beton porus. Beton porus adalah beton ringan yang tersusun dari pasta semen atau mortar danbusa udara stabil, tanpa ada unsur agregat kasar. Keistimewaan utama beton porus terletak padaberat volume yang dapat divariasi sesuai jumlah busa udara stabil yang dimasukkan dalamcampuran pasta semen atau mortar.Penelitian ini bertujuan secara umum adalah memanfaatkanpasir Kalimantan Selatan dan mengkombinasikannya dengan pasir Mojokerto Jawa Timur.Untuk mencapai tujuan penelitian ini, desain eksperimen dirancang dengan metode Taguchi, L9(34) dengan maksud memenuhi persyaratan beton ringan sebagai bahan bangunan batu batakhususnya. Untuk mengaplikasikan uji kekuatan beton porus berbahan pasir Kalimantan Selatandan pasir Mojokerto, maka dilakukan uji tekan di Laboratorium Uji Material prodi DIII TeknikSipil FTSP ITS. Benda uji beton ringan mempunyai dimensi silinder 150x300 mm untuk ujitekan pada umur 28 hari. Penelitian ini memberi kesimpulan bahwa rasio pasir dan semen 0,5memenuhi kuat uji tekan beton porus sebagai material bahan bangunan bata merah kelas I.Kata kunci: Beton Porus, Bahan Bangunan, Pasir, Batu Bata
The Influence of Burning Temperature of MIRHA On Mechanical Properties of Foamed Concrete Bayuaji, Ridho
IPTEK Journal of Proceedings Series Vol 1, No 1 (2014): International Seminar on Applied Technology, Science, and Arts (APTECS) 2013
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2014i1.188

Abstract

Microwave incinerator as one of the modern incinerators is proposed to produce amorphous Microwave incinerated Rice Husk Ash (MIRHA) with high pozzolanic reactivity thus can significantly enhance concrete properties. Analyses on the MIRHA with various burning temperature, the temperatures used were 300°C, 400°C, 500°C, 600°C and 800°C. To determine the physical and chemical properties of MIRHA with various burning temperature were also conducted through X-ray diffraction (XRD), X-ray Fluorescence (XRF), scanning electron microscope (SEM) and mechanical properties test. The results showed that the MIRHA at 300oC could be used as a cementitious material with optimum OPC replacement at 20%. It was found that MIRHA foamed concrete at 300oC achieved more than 100% higher strength compared to foamed concrete without MIRHA.
Handling Low and High Demand Mode on Safety Instrumented Function Totok R. Biyanto; Franky Kusuma; Hendra Cordova; Yerry Sutatio; Ridho Bayuaji
International Journal of Electrical and Computer Engineering (IJECE) Vol 5, No 4: August 2015
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (624.066 KB) | DOI: 10.11591/ijece.v5i4.pp742-749

Abstract

In this paper, demand rate and hazardous event frequency considerations which effect to the error on the SIL calculation will be discused. The various value of hazardous event frequency and demand rate will be evaluated in this paper. The  result of this paper is when hazardous event frequency 10E-06/year and PFD’s safeguard 0.00002, with test interval 1 year, the SILs of low and high demand start showing different level at demand 5.1/year. At that point, we shouldn’t use simplified formula for low demand, because it will make different SIL with the exponential formula and simplified high demand formula. The requared SIL targets are SIL 2 and SIL 1, for exponential formula and simplified high demand formula, respectifely. Hence, it should be taken more attention and consideration for various value of hazardous event frequency with various demand rate.
Studi Pengaruh Penambahan Binder Thermoplastic LDPE dan PET Terhadap Sifat Mekanik Komposit Partikulat untuk Aplikasi Material Bangunan Dwiki Pratama Putra; Sigit Tri Wicaksono; Amaliya Rasyida; Ridho Bayuaji
Jurnal Teknik ITS Vol 7, No 1 (2018)
Publisher : Direktorat Riset dan Pengabdian Masyarakat (DRPM), ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23373539.v7i1.28337

Abstract

Sampah plastik telah lama menjadi permasalahan kota-kota besar, tidak hanya di Indonesia namun juga di dunia. Sampah plastik sangat sulit untuk teruraikan secara alami. Plastik banyak digunakan di seluruh dunia karena memiliki beberapa keunggulan sifat di antaranya adalah ketahanan korosi yang baik, berat yang ringan, flexibel, dan isolator panas dan listrik yang baik. Tujuan penelitian ini adalah membuat material komposit dengan binder thermoplastic dari sampah plastik LDPE dan PET yang biasa ditemukan dalam bungkus makanan dan botol air mineral serta agregrat pasir yang memenuhi kriteria untuk aplikasi material bangunan. Pengujian yang dilakukan meliputi SEM, FTIR, kompresi, bending, absorbability, dan densitas. Penambahan binder thermoplastik cenderung meningkatkan sifat mekanik material komposit. Didapatkan Kekuatan kompresi maksimal sebesar 15,68 MPa pada komposit dengan komposisi binder sebesar 45%. Komposit yang dihasilkan memenuhi kriteria untuk beton ringan struktural dan paving block jenis C dan D.
Thermal Energy Storage Optimization in Shopping Center Buildings Totok R. Biyanto; Akhmad F. Alhikami; Gunawan Nugroho; Ridho Hantoro; Ridho Bayuaji; Hudiyo Firmanto; Joko Waluyo; Agus Imam Sonhaji
Journal of Engineering and Technological Sciences Vol. 47 No. 5 (2015)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2015.47.5.7

Abstract

In this research, cooling system optimization using thermal energy storage (TES) in shopping center buildings was investigated. Cooling systems in commercial buildings account for up to 50% of their total energy consumption. This incurs high electricity costs related to the tariffs determined by the Indonesian government with the price during peak hours up to twice higher than during off-peak hours. Considering the problem, shifting the use of electrical load away from peak hours is desirable. This may be achieved by using a cooling system with TES. In a TES system, a chiller produces cold water to provide the required cooling load and saves it to a storage tank. Heat loss in the storage tank has to be considered because greater heat loss requires additional chiller capacity and investment costs. Optimization of the cooling system was done by minimizing the combination of chiller capacity, cooling load and heat loss using simplex linear programming. The results showed that up to 20% electricity cost savings can be achieved for a standalone shopping center building.
Model Jaringan Saraf Tiruan Kuat Tekan Beton Porus dengan Material Pengisi Pasir Ridho Bayuaji; Totok R. Biyanto
Jurnal Teknik Sipil Vol 20 No 1 (2013)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2013.20.1.3

Abstract

Abstrak. Beton porus adalah salah satu beton ringan dan bentuk dasarnya merupakan perpaduan antara pasir, semen, air (campuran dasar) dan foam (biasanya 0,1-1,0 mm diameter). Penelitian ini difokuskan pada aplikasi jaringan saraf tiruan (JST) untuk memprediksi kuat tekan beton porus. Metode JST dapat menangkap interaksi yang kompleks antara variabel input/output dalam suatu sistem tanpa pengetahuan sebelumnya dari sifat interaksi dan tanpa harus secara eksplisit mengasumsikan bentuk model. Makalah ini menjelaskan data penelitian yang ada, seleksi data dan proses pelatihan model JST, dan validasi. Hasil penelitian menunjukkan bahwa kuat tekan beton porus dapat diprediksi lebih akurat, mudah dan cepat dari densitas beton porus, rasio pasir dan semen dan distribusi ukuran partikel pasir.Abstract. Foamed concrete is one of light concrete and its basic form is a blend of sand, cement, water (the base mix) and a pre-formed foam (usually 0.1 to 1.0 mm in diameter). This research focus on application of artificial neural networks (ANN) to predict the compressive strength of foamed concrete mixtures. The ANN method can capture complex interactions among input/output variables in a system without any prior knowledge of the nature of these interactions and without having to explicitly assume a model form. Indeed, such a model form is generated by the data points themselves. This paper describes the database assembled, the selection and training process of the ANN model, and its validation. Results showed compressive strength of foamed concrete can be predicted much accurately, easy and fast from density of foamed concrete, sand and cement ratio and particle size distribution of sand.
Study of Water Retention Measurement on Concrete Using Paper Filter Whatman No.42 Deris Faisa Ralindra; Ria Asih Aryani Soemitro; Indarto Indarto; Ridho Bayuaji
IPTEK Journal of Proceedings Series No 1 (2019): 4th International Seminar on Science and Technology 2018 (ISST 2018)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (384.925 KB) | DOI: 10.12962/j23546026.y2019i1.5120

Abstract

This study aimed to know water retention on concrete using paper filter Whatman No.42. The study was conducted as experimental in laboratory by making two types of specimen with different Water Cement Ratio (WCR); 0.5 and 0.6. Each specimen was immersed for 28 days. Next step was finding the time of consistency water content on specimen and paper filter. Then, water retention could be measured. As a validation of water retention measurement, so the results were compared with saturated salt solution method in dessicator.  This study used NaCl, KCl, and H2SO4 as saturated salt solution. The results of water retention measurement were shown in graphs
Abstract of Invited Speaker : Utilization of Local Materials in Green Concrete Technology Ridho Bayuaji
IPTEK Journal of Proceedings Series No 1 (2015): 1st International Seminar on Science and Technology (ISST) 2015
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (14.241 KB) | DOI: 10.12962/j23546026.y2015i1.1117

Abstract

Sustainable development is a concept in green building, which involves ecological, social and economic objectives. It requires to sustain the integrity of resources exploitation, the orientation of technological development and the direction of investments. Concrete is most used construction material worldwide. However, the concrete also brings a great environmental cost. The billions of tons of natural materials mined and processed every year and huge enormous amounts of energy required to produce the cement as well as 7-8% of CO2 released into the atmosphere in the cement processing. This paper discusses the various efforts to improve the concrete environmental friendliness or as a green building material. The most potential successful effort in this matter is utilize local substitutes for cement, especially those that are byproducts of industrial processes, like fly ash, ground granulated blast furnace slag and silica fume
Co-Authors ABM Diah Ade Asmi Affandhie, R. Buyung Anugrah Agus Imam Sonhaji Agus Imam Sonhaji, Agus Imam Akhmad F. Alhikami Akhmad Faruq Alhikami Amaliya Rasyida Ardiansyah, Giri Teguh Darmawan, Muhammad Sigit Deris Faisa Ralindra Dicky Imam Wahyudi Dicky Imam Wahyudi Dora Melati Nurita Sandi Dwiki Pratama Putra Franky Kusuma Gunawan Nugroho Hamzah Fansuri Hendra Cordova Hidayati, Ririn Eva Hudiyo Firmanto, Hudiyo Husin, Nur Achmad Ibnu Pudji Rahardjo Ibnu Pudji Rahardjo Indarto Indarto Indarto Indarto Iqbal, Rendy Muhamad Januarti Jaya Ekaputri Joko Waluyo Junaedi, Nurhayati M Sigit Darmawan Mansur, Moh. Safi’i MF Nuruddin Muhammad Sigit Darmawan Muhammad Sigit Darmawan Nur Achmad Husin Nur Achmad Husin Priantama, Dimas Bayu R. Buyung Anugraha Affandhie R. Buyung Anugraha Affandhie R.Y. Perry Burhan, R.Y. Perry Rahardjo, Ibnu Pudji Ria Asih Aryani Soemitro Ridho Hantoro SATRIYAS ILYAS Silvana Dwi Nurherdiana Srie Subekti Subaer - Subekti, Srie Sulchan Arifin Sulchan Arifin Sungkono Karsidi Sungkono Karsidi Sungkono Sungkono Supriadi, Warih Susilo, Alfred Jonathan Suswanto, Budi Suswanto Suwandi Suwandi Totok R. Biyanto Totok R. Biyanto Totok R. Biyanto Totok R. Biyanto TR Biyanto Wicaksono, Sigit Tri Yerry Sutatio Yudoprasetyo, Kohar Yuyun Tajunnisa