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All Journal SMARTek IPTEK Journal of Proceedings Series Jurnal Teknosains Journal of Engineering and Technological Sciences Journal TEPAT: Teknologi Terapan untuk Pengabdian Masyarakat EPI International Journal of Engineering Jurnal Penelitian Enjiniring Fakultas Teknik Unhas Jurnal Lingkungan Binaan Indonesia

Victor Sampebulu

Faculty Of Engineering, Department Of Architecture, Hasanuddin University, Makassar, Indonesia

Author-ID : 369769

Arts Humanities Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Public Health Social Sciences

Published : 13 Documents Claim Missing Document

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Influence of High Temperatures on the Workability of Fresh Ready-Mixed Concrete Sampebulu, Victor
Journal of Engineering and Technological Sciences Vol 44, No 1 (2012)
Publisher : ITB Journal Publisher, LPPM ITB

Properties of fresh concrete made in tropical countries, which is mixed, transported (with agitation), placed and initially cured in places where the temperature ranges from about 20oC to 40oC and relative humidity above 60%, are not completely understood. Applicable requirements also differ from country to country and government agencies and private enterprises have their own specifications. Assuming such temperature and relative humidity conditions, the present study is an attempt at evaluating the properties of hot weather concrete in fresh state with using a method of readyâmixed concrete. The fresh concrete was mixed and agitated at varying concrete and ambient temperatures. Three groups of the component materials, each material having such temperature as to bring resulting temperature of the fresh concrete to about 20oC, 30oC, 35oC, were chosen. The temperature of cement was conditioned to about20o, 40oC and 60oC for each of groups respectively. The aggregate was made warm enough to simulate the condition of outdoor pile in ready-mixed concreteÂ plant. The temperature of tap water was always 20oC as it was easily controlled and unlikely affected by outdoor temperature. With the fresh concrete prevented from evaporation, slump lossÂ is caused solely by increased temperature of concrete. During agitation, the slump loss increases rapidly during the first 30 minutes but moderately during the remaining period. Concrete-placing temperature (upon arrival at the work site) could be estimated by a proposed formulaÂ derived from this study. Besides the freshly mixed concrete temperature, this formula also takes into consideration the ambient temperature, agitating time in transit and hydration heat. The achievement as described in this study may be useful to control concrete quality in terms of strength, shrinkage and other properties of concrete to be placed in hot-humid environment.

PENGARUH PENAMBAHAN ADMIXTURE TERHADAP KARAKTERISTIK SELF COMPACTING CONCRETE (SCC) Mariani, Mariani; Sampebulu, Victor; Ahmad, Abdul Gani
SMARTek Vol 7, No 3 (2009)
Publisher : SMARTek

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1281.688 KB)

Penelitian ini adalah eksperimen laboratorium yang sifatnya pengenalan terhadap materi SCC.SCC atau Self Compacting Concrete adalah sebuah inovasi dalam teknologi konstruksi betondewasa ini yang menggunakan bahan tambah (admixture) untuk menghasilkan beton berkinerjatinggi. Pada penelitian ini ingin diketahui pengaruh penambahan admixture kimiaSuperplasticizer â€œMighty 150 Sâ€ dan Retarder â€œConplast Dessue Possolitâ€ terhadap karakteristikSCC. Superplasticizer diberikan dalam 3 variasi kadar (1,5%, 2,0%, 2,5%) dengan mengurangikadar air campuran. Metode pengujian SCC dengan Slump-Cone Test pada kondisi segar dantes kuat tekan pada umur 3, 7, dan 28 hari. Hasil penelitian menunjukkan keadaan selfcompactibilitySCC tercapai pada semua kadar Superplasticizer yang diberikan. Tingkatkelecakan aliran (workabilitas) SCC meningkat sesuai penambahan kadar Superplasticizer, dansebaliknya, kekuatan tekan SCC menurun sesuai penambahan kadar Superplasticizer. Kondisioptimal SCC tercapai pada kadar 1,5% Superplasticizer

Development of the Structure and Construction of Seaweed Farmer's Residence in Bantaeng Regency Pratiwi Mushar; Victor Sampebulu'
EPI International Journal of Engineering Vol 1 No 1 (2018): Volume 1 Number 1, February 2018
Publisher : Center of Techonolgy (COT), Engineering Faculty, Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar

Seaweed farmer is one of the biggest livelihoods of the society in Bantaeng Regency. The problems of seaweed farmer's residential in Bantaeng city (case study), as follows: First, the excessive utilization of the residence so that the hierarchy of the spatial is not clear. Second, utilizing the structure or construction of the residence as a place of goods storage and as a place for clothes drying that can affect the building structures security. Third, the addition of spatial on the residence without a good planning on the structure and construction of the residence. Fourth, the spatial function for seaweed processing activities built in residential areas and on the residence itself so that seaweed industry processing developed into dense, slum, without sanitation, and unfit for habitation. The purpose of the research is to analyze the structure and construction of seaweed farmer's residence reviewed from its spatial organization and function in Bantaeng Regency. The data are obtained by direct survey and field observation where the interview is conducted by using questionnaire. The society aspiration data were obtained by using Focus Group Discussion (FGD) approach. Techinal analysis is conducted by using qualitative descriptive. The result of the analysis show that: 1) The spatial in the growing and developing residence is influenced by some seaweed farmer's activity and that spatial development influences the structure and construction development of stilt house buildings that are structured or overlapping each other. The construction development is conducted independently by the owner of the residence without an appropriate or standard basic constructions. 2) The concept of the structure and development of farmer's residence maintains the construction system of Bugis-Makassar stilt house but with the procurement of spatial organization as needed by the seaweed farmer. Key words: seaweed farmers, seaweed farmers's recidence, structure and construction

Makna Ruang Pangrampak dalam Arsitektur Toraja Lexsi Yosua Masseleng; Muh. Mochsen Sir; Victor Sampebulu
Jurnal Penelitian Enjiniring Vol 23 No 1 (2019)
Publisher : Center of Techonolgy (COT), Fakultas Teknik, Universitas Hasanuddin

Pangrampak sebagai simbol berupa ruang tentu memiliki suatu makna dalam aristektur toraja. Makna merupakan alat untuk memahami dan mengartikan lambang atau simbol, dimana makna dapat terungkap secara verbal melalui bahasa dan non-verbal melalui benda atau tanda. Makna adalah salah satu unsur yang terdapat dalam Arsitektur Nusantara yang berisi pesan dari sebuah hasil karya arsitektur. Penelitian tentang makna dapat dipelajari berdasarkan dari pengalaman dan pemahaman seseorang tentang ruang dan tempat. Tujuan penelitian ini untuk memperoleh makna Pangrampak sebagai bagian dari Arsitektur Toraja melalui peran dan fungsinya dalam kehidupan keseharian, maupun dalam adat-istiadat Masyarakat Toraja. Penelitian ini menggunakan metode penelitian Kualitatif dengan pendekatan fenomenologi, dimulai dengan pengambilan data awal dilanjutkan dengan observasi lapangan serta konfirmasi data dengan kenyataan di lapangan, kemudian mereduksi data, menyajikan data, dan mengambil kesimpulan. Hasil penelitian menunjukkan Pangrampak memiliki dua makna. Makna Pangrampak dalam Keseharian (Informal) Pangrampak merupakan ruang komunal tempat interaksi sosial rumpun keluarga dengan masyarakat luas yang berfungsi sebagai tempat melaksanakan berbagai kegiatan pengembangan kehidupan masyarakat. Makna Pangrampak dalam adat-istiadat (Formal) yaitu merupakan ruang sakral yang menjadi tempat pelaksanaan berbagai prosesi dalam suatu ritual upacara adat.

Hubungan antara Ketebalan dengan Radius Lengkung Kayu Jati Putih sebagai Dasar Pembuatan Ornamen Arsitektur Bentuk Bebas Muhammad Ardli Santosa; Victor Sampebulu; Hartawan Madeali; Shirly Wunas; Idawarni J Asmal; Nurul Nadjmi
Jurnal Penelitian Enjiniring Vol 24 No 1 (2020)
Publisher : Center of Techonolgy (COT), Fakultas Teknik, Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jpe.052020.10

Abstrak Metode pelengkungan kayu solid merupakan salah satu metode pelengkungan kayu yang saat ini masih terus dikembangkan untuk mendapatkan metode pelengkungan kayu yang lebih efisien. Namun, metode ini memerlukan peralatan dan teknik yang khusus. Pemilihan benda uji dari jenis kayu yang banyak digunakan untuk pembuatan furniture dan bahan konstruksi di kota Makassar, salah satunya adalah kayu jati putih. Penelitian ini ingin menemukan hubungan dimensi dan karakter lengkungan kayu yang ideal tanpa perlakuan awal, maka rumusan masalahnya adalah berapa jarak radius lengkung kayu jati putih dengan ketebalan 0,5 cm, 0,7 cm dan 1 cm yang dapat dipakai sebagai ornamen arsitektur bentuk bebas. Lalu, adakah hubungan radius lengkung kayu jati putih dengan ketebalan kayu, lebar kayu dan waktu saat kayu dilengkungkan. Tujuan penelitian adalah menganalisis radius lengkung kayu jati putih dengan ketebalan 0,5 cm, 0,7 cm dan 1 cm yang dapat dipakai sebagai ornamen arsitektur bentuk bebas dan mengungkapkan hubungan radius lengkung kayu jati putih dengan ketebalan kayu, lebar kayu dan waktu saat kayu dilengkungkan. Penelitian ini menggunakan metode eksperimental untuk menganalisis datanya dan metode skala 1 : 1 atau Performance Based untuk metode pengujian sampelnya. Hasil penelitiannya adalah nilai radius terbesar dari tebal 0,5 cm adalah 35,47 cm, tebal 0,7 cm adalah 65,42 cm dan tebal 1 cm adalah 91,73 cm. Untuk waktu lengkung yang dapat bertahan lebih lama juga dengan ketebalan 0,5 cm yaitu selama 1 hari. Maka hubungan radius lengkung dengan ketebalan kayu jati putih sangat erat, dimana semakin tebal kayu maka semakin besar radius lengkung kayu jati putih. Metode pelengkungan kayu solid merupakan salah satu metode pelengkungan kayu yang saat ini masih terus dikembangkan untuk mendapatkan metode pelengkungan kayu yang lebih efisien. Namun, metode ini memerlukan peralatan dan teknik yang khusus. Pemilihan benda uji dari jenis kayu yang banyak digunakan untuk pembuatan furniture dan bahan konstruksi di kota Makassar, salah satunya adalah kayu jati putih. Penelitian ini ingin menemukan hubungan dimensi dan karakter lengkungan kayu yang ideal tanpa perlakuan awal, maka rumusan masalahnya adalah berapa jarak radius lengkung kayu jati putih dengan ketebalan 0,5 cm, 0,7 cm dan 1 cm yang dapat dipakai sebagai ornamen arsitektur bentuk bebas. Lalu, adakah hubungan radius lengkung kayu jati putih dengan ketebalan kayu, lebar kayu dan waktu saat kayu dilengkungkan. Tujuan penelitian adalah menganalisis radius lengkung kayu jati putih dengan ketebalan 0,5 cm, 0,7 cm dan 1 cm yang dapat dipakai sebagai ornamen arsitektur bentuk bebas dan mengungkapkan hubungan radius lengkung kayu jati putih dengan ketebalan kayu, lebar kayu dan waktu saat kayu dilengkungkan. Penelitian ini menggunakan metode eksperimental untuk menganalisis datanya dan metode skala 1 : 1 atau Performance Based untuk metode pengujian sampelnya. Hasil penelitiannya adalah nilai radius terbesar dari tebal 0,5 cm adalah 35,47 cm, tebal 0,7 cm adalah 65,42 cm dan tebal 1 cm adalah 91,73 cm. Untuk waktu lengkung yang dapat bertahan lebih lama juga dengan ketebalan 0,5 cm yaitu selama 1 hari. Maka hubungan radius lengkung dengan ketebalan kayu jati putih sangat erat, dimana semakin tebal kayu maka semakin besar radius lengkung kayu jati putih.

Buckling Restrained Brace (BRB) dengan Bentuk Penampang Persegi dan Lingkaran Terhadap Displacement pada Model Struktur Plane Frame A. Nur Anisah Rahayu Agich; Victor Sampebulu; Hartawan Madeali
Jurnal Penelitian Enjiniring Vol 24 No 2 (2020)
Publisher : Center of Techonolgy (COT), Fakultas Teknik, Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jpe.112020.03

Keterbatasan lahan menyebabkan bangunan jangkung menjadi pilihan yang tepat untuk dikembangkan guna mengurangi penggunaan lahan. Pada bangunan jangkung, struktur harus didesain agar mampu menahan gaya-gaya lateral (beban gempa) yang terjadi. Salah satu cara struktural agar kekakuan vertikal struktur meningkat, yaitu penambahan elemen struktur berupa bresing, Bresing konvensional merupakan struktur yang paling umum digunakan untuk menahan gaya-gaya lateral (beban gempa). Struktur ini memiliki kekakuan lateral yang sangat tinggi. Namun karena timbul perilaku tekuk dan kehilangan kekakuan lateral akibat adanya gaya tekan pada struktur, maka perilaku histeristik pada bresing konvensional sudah tidak dapat diandalkan lagi. Adapun Buckling Restrained Braces merupakan bresing yang mampu menahan gaya tekan dan gaya tarik yang dapat menyebabkan tekuk pada struktur. Penelitian ini bertujuan mengungkap bentuk penampang ideal dengan membandingkan antara bentuk penampang persegi dan lingkaran. Pengujian dilakukan dengan membandingkan displacement yang terjadi pada Buckling Restrained Braces dengan bentuk penampang persegi dan lingkaran pada model struktur plane frame. Beban yang diberikan pada model struktur plane frame adalah beban aksial berupa beban tekan dan tarik 100 kN, 200 kN, 300 kN, 400 kN dan 500 kN. Berdasarkan hasil penelitian, nilai rata-rata displacement pada 6 tipe bresing dengan bentuk penampang persegi adalah 0,18360 mm, sedangkan pada 6 tipe bresing dengan bentuk penampang lingkaran adalah 0,18354 mm. Sehingga selisih nilai rata-rata displacement bresing dengan bentuk penampang persegi dan lingkaran adalah 0,00006 mm.

Influence of High Temperatures on the Workability of Fresh Ready-Mixed Concrete Victor Sampebulu
Journal of Engineering and Technological Sciences Vol. 44 No. 1 (2012)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/itbj.eng.sci.2012.44.1.2

Properties of fresh concrete made in tropical countries, which is mixed, transported (with agitation), placed and initially cured in places where the temperature ranges from about 20oC to 40oC and relative humidity above 60%, are not completely understood. Applicable requirements also differ from country to country and government agencies and private enterprises have their own specifications. Assuming such temperature and relative humidity conditions, the present study is an attempt at evaluating the properties of hot weather concrete in fresh state with using a method of ready"“mixed concrete. The fresh concrete was mixed and agitated at varying concrete and ambient temperatures. Three groups of the component materials, each material having such temperature as to bring resulting temperature of the fresh concrete to about 20oC, 30oC, 35oC, were chosen. The temperature of cement was conditioned to about20o, 40oC and 60oC for each of groups respectively. The aggregate was made warm enough to simulate the condition of outdoor pile in ready-mixed concrete plant. The temperature of tap water was always 20oC as it was easily controlled and unlikely affected by outdoor temperature. With the fresh concrete prevented from evaporation, slump loss is caused solely by increased temperature of concrete. During agitation, the slump loss increases rapidly during the first 30 minutes but moderately during the remaining period. Concrete-placing temperature (upon arrival at the work site) could be estimated by a proposed formula derived from this study. Besides the freshly mixed concrete temperature, this formula also takes into consideration the ambient temperature, agitating time in transit and hydration heat. The achievement as described in this study may be useful to control concrete quality in terms of strength, shrinkage and other properties of concrete to be placed in hot-humid environment.

SUBTITUSI SAMPAH ORGANIK DAN TANAH MEDITERAN MENJADI SEMEN ALTERNATIF SELAIN SEMEN PORTLAND Muhammad Syarif; Victor Sampebulu; Muh. Wihardi Tjaronge; Nasruddin Junus
Jurnal Teknosains Vol 7, No 2 (2018): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.33708

The results of this study aims to save the environment, through the discovery of new alternative materials by recycling organic waste, household waste, coal waste (fly ash and bottom ash), and substitution of mediteran land and clay into organic cement that is alternative cement in addition portland cement. Test results of organic cement chemical compound using laboratory testing method refers to ASTM C-114 and SNI 15-2049-2004. An indication of resembling a portland cement chemical compound is CaO of 65.36%, SiO₂ 18.84%, AlOO₃ 6.33%, Fe₂O₃ 2.29%, SO₃ 3.64%, MgO 1.35%, C₃S 66 , 72%, C₂S 3.98%, C₃A 12.9%, and C4Af 6.97%. Test methods of physical properties include testing of baseline time and end time and normal consistency value to organic cement, this test refers to ASTM C 191-04 and C 191-08 and ASTM C 187-04. Fineness of organic cement grains that passed in the mesh 200 mesh as much as 56%, more subtle than portland cement is 52%. The solid weight of organic cement is 1200 kg/m3, lighter than portland cement which reaches 1250 kg/m3. The initial setting time for organic cement was 105 minutes, longer than portland cement at 90 minutes. For the organic cement final time at 225 minutes, it was above the end time of portland cement at 180 minutes.

Compression Strength Concrete with Pond Ash Lati Berau Tumingan Tumingan; Muhammad Wihardi Tjaronge; Victor Sampebulu; Rudy Djamaluddin
IPTEK Journal of Proceedings Series No 1 (2017): The 2nd International Conference on Civil Engineering Research (ICCER) 2016
Publisher : Institut Teknologi Sepuluh Nopember

Handling of coal burning waste of thermal power plant in Lati, Berau district, East Kalimantan province, which is recommended by the department of environmental impact management is to dispose the coal ash into pools flowed water so that coal ash did not fly and cause air pollution. As known that coal ash waste is included hazardous and toxic waste, therefore managing it carefully is a necessity. Sediment or heap of coal ash in the sedimentation pond that is flowing with water is called Pond Ash. This study is conducted by utilizing the pond ash as a replacement material in the concrete mix. The effect of the use of pond ash as partial replacement of sand, fine aggregate in the concrete mix, is studied using cylindrical specimen with a diameter of 100 mm and a height of 200 mm. Specimens were made by taking the ratio of the percentage of pond ash of 0%, 5%, 10%, 15% and 20% of the mixture of concrete with the constant water cement ratio 0.49 which is based on the results of normal concrete mix design. The compressive strength test of concrete was conducted at ages 1, 3, 7, 14, 28 and 90 days. The test results of compressive strength of concrete obtained showed an increase in compressive strength in accordance with the addition of pond ash in the mix. The adding of pond ash in the mix affected the increasing in the compressive strength of concrete, and the optimum strength is obtained in the ratio of 17% pond ash, which increased to 26.08 MPa from 25.05 MPa for concrete with and without pond ash mixes respectively, or increased by 4.12%. This increase is not significant and cannot be used as a reference, however, by the results of this study it can be concluded that the pond ash waste can be utilized for the manufacture of concrete as a partial replacement of sand.

Kesadaran Masyarakat Terhadap Pentingnya Keamanan Konstruksi Bangunan Rumah Tinggal Terhadap Bencana Badai Angin, Banjir dan Gempa Pratiwi Mushar; Victor Sampebulu; Nasruddin -; Hartawan -; Imriyanti -; Teguh Iswara S; Taufik Ishak; Dahniar -; Yusaumi Ramadhanti F.T
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 4 No 2 (2021): Community Empowerment through Health Awareness in the New Normal
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v4i2.209

The Gowa Regency is an area with the rapid development of housing and settlements. Some of the causes are the availability of land that is still a lot, the less space to build in urban areas so that development leads to suburban areas. This provides opportunities for local communities to improve their economy, developers to get opportunities in their business and the government to realize low-cost housing programs. Residentials that are developed independently or held by developers require fast building completion without considering the feasibility of building construction against site conditions, and natural disasters (floods, winds and earthquakes). It is reported that buildings' safety and security cannot be separated from topography and soil conditions, hence the planning must be able to adjust geological and geographical conditions wisely and wisely. The purpose of the activity is socialization to assist the community in responding to the security conditions of houses that are built independently/buy with ready for habitation. Partners are residents of Balang Balang village. The method used is a discussion with the head of the local RT and an initial survey of the condition of the partner buildings is continued to the socialization stage. The output is the concept of the “Disaster Response Building” model as a driver of “Community Awareness regarding the Importance of Security for Residential Building Construction against Disasters. The benefit of the activity is the response of the community to the importance of the safety of residential construction.

Co-Authors A. Nur Anisah Rahayu Agich Abdul Gani Ahmad Dahniar - Dahri Kuddu Djamaluddin, Rudy Hartawan - Hartawan Hartawan Hartawan Madeali Idawarni Asmal Imriyanti Imriyanti Lexsi Yosua Masseleng M. Syavir Latif Mariani Mariani Muh. Mochsen Sir Muh. Wihardi Tjaronge Muhammad Ardli Santosa Muhammad Syarif Muhammad Taufik Ishak Muhammad Wihardi Tjaronge Nasruddin Nasruddin - Nasruddin Junus Nasruddin Nasruddin Nurul Nadjmi Pratiwi Mushar Rahmi Amin Ishak Shirly Wunas Syarif Beddu Teguh Iswara S Triyatni Martosenjoyo Tumingan Tumingan Yusaumi Ramadhanti F.T

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