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Ismeddyanto, Ismeddiyanto
Universitas Riau
Agriculture, Biological Sciences & Forestry Arts Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering

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Kajian Sifat Fisik Beton Dengan Additive Natrium Tripolyphosphate Pada Pengecoran Beton Dalam Air Gambut Wahyu Muhammad Firdaus; Ismeddiyanto Ismeddiyanto; Edy Saputra
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 1 Januari s/d Juni 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Under-Water Concrete (UWC) is one of the types of high-performance concrete because the mixture and the casting process are different from concrete in general. UWC casting does not allow the compaction process to be carried out in the water so by adding Admixtures Washout Agent (AWA) into concrete, the concrete's viscosity is increased and its resistance to washout is enhanced. Sodium Tripolyphosphate (STPP) is one of the additives used in this research which has AWA properties so that when casting is carried out the concrete mixture is not mixed with peat water. The use of a Superplasticizer ensures enough concrete fluidity to spread readily in place without vibration and the use of stone ash functions as a filler for the pores in the concrete. UWC must achieve the right balance between its physical and mechanical properties which can affect its performance. UWC composition and physical properties determine concrete resistance to mass loss by washout of peat water. The research aims to study the effect of STPP additive in the composition of concrete mixtures in the peat water environment and analyze UWC physical properties, i.e., workability, Fourier Transform Infra-Red (FTIR), and porosity. The amount of STPP used in this study is 10% of cement's weight while the amount of stone ash used is 10% of the fine aggregate weight. Porosity and volume weight tests were carried out on six samples, and FT-IR testing was carried out on two samples of the concrete cylinders with volumes of 10 cm diameter and 20 cm height. The parameter considered in this study was comparing the physical properties of UWC of the curing time in peat water for 28 days and 56 days. The test results of the volume weight test on 28 and 56 curing days were 2262.271 kg/m3 and 2271.331 kg/m3. The porosity test value in concrete with 28 days was 20.847% decreased by 0.165% against the concrete age of 56 days, which equals to 20.024%. It can be concluded that there was no effect of peat water at 56 days on concrete's physical properties. Key words: Natrium Tripolyphosphate, Underwater Concrete, Admixture Washout Agent, Porosity
Analisis Perilaku Kerusakan Balok Beton Bertulang Pascabakar Ricky Andriano; Reni Suryanita; Ismeddiyanto Ismeddiyanto
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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The current building structure cannot be separated from the risk of fire. So that a research is needed to study the impact of fire hazard on building structures. The purpose of this research is to analyze the form of damage that occurs on reinforced concrete (RC) beam after experiencing a fire. The test specimens used are RC beam with the cross section size 10 x 20 cm and with the length of span of 125 cm. The concrete strength planned in this study is 20 MPa. The combustion process was carried out in a local brick factory furnace with a fire duration of 30 minutes and 60 minutes. The results showed that there was a damage the RC beam in the form of cracks, spalling, and discoloration. The width of the crack measured in RC beam varying from 0.5 - 3 mm. It was also find that spalling width seen at RC beam was 10 cm, it was considend that these beam had been considered as desctructive. More over the color on the concrete surface changed to grayish white. The color changes indicated that the RC bem had been exposed to a temperatures between 600C-900C.Keyword : reinforced concrete beam, cracks, spalling, color change
Kuat Tekan Dan Kuat Tarik Belah Beton OPC Dan OPC Abu Sekam Padi Di Lingkungan Gambut Yogie Pranata; Ismeddiyanto Ismeddiyanto; Monita Olivia
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5, No 1 (2018): Wisuda April Tahun 2018
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The objective of the study is to investigate the mechanical properties of concrete with different replacement levels of Ordinary Portland Cement (OPC) by Rice Husk Ash (RHA). Two RHA replacement levels were considered in the study which is 5% and 10% by the weight of cement. After the specified initial curing period (28 days), specimens were immersed directly in peat water canal for 28 days. The mechanical properties was evaluated by measuring the compressive strength and tensile strength of the concrete specimens. The result shows that the compressive strength of OPC concrete is higher than OPC concrete using RHA as cementitious materials. A replacement level of 10% RHA in OPC concrete performs and shows better tensile strength than other replacements.Keywords : Mechanical properties, OPC, Rice Husk Ash (RHA), peat water
Analisis Kinerja Struktur Bangunan Bertingkat Di Wilayah Gempa Indonesia Intensitas Tinggi Menggunakan Analisis Statis Nonlinier Sri Fatma Reza; Reni Suryanita; Ismeddiyanto Ismeddiyanto
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
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Indonesia is part of an area that is known for earthquake and volcano eruption activities. Because of this, one of the structural planning concept in Indonesia is by analyzing structure performance after earthquake activity. The purpose of this research is to identify performance and distribution of plastic hinge on structure storeyed buildings at Indonesia area with high intensity earthquake by using nonlinear static analysis method. Structure model is varied by height and number of floors, Model 1 is building with 5 floor, Model 2 is building with 10 floors, and Model 3 is building with 15 floors.Building is made from reinforced concrete with constant height of 4 meters. Building model receives earthquake load in the form of response spectrum of earthquake area with high ground accelaration (g). Earthquake area that is picked is at Banda Aceh with two soil condition (moderate soil and softsoil). Structure performance is decided by using ATC-40 code which is affected by target displacement. Method which is used to obtain target displacement is ATC-40 capacity spectrummethod and displacement coefficient FEMA 356. Analysis result shows performance level of all three models IO (Immediate Occupancy) are similar in moderate soil and soft soil condition.Keywords: moderate soil and soft soil condition, nonlinear static analysis, plastic hinge, response spectrum, structure performance, structure storeyed building.
Penggunaan Bubuk Kulit Kerang Darah Dan Lokan Sebagai Bahan Pengganti Semen Revina Oktaviani; Monita Olivia; Ismeddiyanto Ismeddiyanto
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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In this study, two types of waste seashells, including blood clam and lokan used as cement replacement material. The parameters studied include compressive strength, workability, and unit weight. These properties were compared with those of a control concrete that was made of Ordinary Portland Cement (OPC). Based on the mixes using the ground seashell with proportion 2, 4, 6, and 8% by weight of cement, the optimum compressive strength was achieved for the mix that replaced cement by 4%. Incorporation of lokan seashell resulted higher unit weight than other concrete. The result indicate that waste seashells can be applied as cement replacement and may improve the workability of concrete.Keywords: seashells, cement replacement, compressive strength, unit weight, workability
Prediksi Tingkat Kerusakan Portal Baja Bertingkat Berdasarkan Riwayat Waktu Gempa Pulau Sumatera Dengan Metode Backpropagation Neural Network (BPNN) Vindi Trisatria; Reni Suryanita; Ismeddiyanto Ismeddiyanto
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
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Indonesia one of the countries that prone to earthquakes which is tectonic and volcanic. Earthquake can damage a building, therefore the planning of earthquake resistant building is a requirement for an earthquake prone areas like in Indonesia and that planning must notice to the response of structure. One of the solution to predict the structural response and the damage level of multilevel steel portals is using the Artificial Neural Network (ANN). Thestructure model that author review is a multilevel steel portals which consisting of 3 models (5 levels, 10 levels and 15 levels). The structure is modeling with the finite element softwareand receives earthquake loads based on the time history of the Cape Mendocino earthquake that will be scaled on 10 capital of the provinces in Sumatera island. Artificial Neural Network(ANN) with backpropagation method is designed by using MATLAB program which is the input of this ANN is displacement, velocity and acceleration of three models that have beendesigned. The output that will be generated is damage level of the steel portal in the category of Safe, Immidiate Occupancy (IO), Life Safety (LS) or in conditions of Collapse Prevention(CP). Artificial neural network is trained by 8 earthquake data that owned by the capital of the provinces, and 2 remaining data from Padang City and Pekanbaru City that use forsimulation process. Based on the research, the model of artificial neural network has the potential accuracy to predict the damage level of structural between 90% -99%. From the result of simulation by ANN with 702 data from capital provinces of Padang and Pekanbaru City, 98,5% data could be predicted correctly by ANN. These results have shown that ANN is able to predict the damage level of multilevel steel portals in all of capital provinces in Sumatera Island.Keywords: multilevel steel portals, 3 structural model, structure response, time history, damage level, Artificial Neural Network.
Analisis Kuat Lentur Murni Sistem Balok Bataton Semi Pracetak Bagus Rizkya putra; Ismeddiyanto Ismeddiyanto; Zulfikar Djauhari
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
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Abstract

Semi precast beam is unitary beam element that supports the load in longitudinal direction, the beam is unification of semi precast concrete with 5 MPa strength of precast concrete and cast in place with 17.5 MPa strength which were combined to create unified element of semi precast beam structure. Semi precast beams made the object of review using three beams type with dimensional variations as high as beam semi precast one layer was 140 mm, beam semi precast one layer 290 mm height, and beam semi precast two layers 290 mm height to be analyzed using finite element analysis Abaqus 6.12. Semi precast beams model will be given the burden of axial load has increased. Beams will be analyzed the influence of pure bending strength received by the relationship load - deflection parameters, the relationship moments - curvature and crack pattern that occurred three types of beams. Based on analysis results obtained with Abaqus 6.12 axial load greater value with increased dimensions and beams will be more stiffness. The maximum axial load value capable detained by the three types of semi precast beams at 8,61 kN for semi precast beams one layer was 140 mm height, 29.64 kN for semi precast beams one layer of 290 mm height and 25 kN for semi precast beam two layers of 290 mm height. Evaluation of cracking that occurs is cracked bending pure occur in areas of bending moment largest and in areas of tension on the beam.Keywords : Beam, semi precast, precast concrete, cast-in-place concrete, the finite element analysis
Analisis Perilaku Pola Retak Balok Beton Bertulang Rendy Wijaya; Reni Suryanita; Ismeddiyanto Ismeddyanto
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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Abstract

Concrete is the common material that is used on construction. Concrete will be subjected to loading during the construction until its service time. Continuous loading on concrete caused cracks in concrete. Cracks can also occur due to be changes in temperature, shrinkage, and also when the concrete was ready to casted that caused by cement hydration . The purpose of this study was to obtained crack patterns existed on reinforced concrete beam during the application of flexural load. The specimen used on this study was reinforced concrete beam with the cross section of 10 cm x 20 cm and with the length of 125 cm. The upper and lower longitudinal reinforcement for the beam was 2D8 and 2D10 respectively. The shear reinforcement of the beam was D6-167. The result of this study was found that the crack pattern that occurred was a flexural crack. Keywords: concrete, cracks, reinforcement, flexural crack.
Analisis Numerik Sistem Balok Bataton Semi Pracetak Dengan Variasi Jarak Dan Jumlah Tulangan Sengkang Prayogo Pratama; Ismeddiyanto Ismeddiyanto; Zulfikar Djauhari
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
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Semi precast concrete or Hybridconcrete construction (HCC) is a structure whose elements system is a combination of precast concrete and cast concretein place or castin place (CIP). Concrete type is in addition to flexural, stirrup reinforcement also need to develop strength. This study examines the behavior of bending and shear, load and deflection relationships, as well as variations in the amount of reinforcement stirrups. Based on the finite element-based numerical analysis, which examined Beams has dimensions of 290 x 140 mm with a length of 3000 mm. Quality precast used 5 MPa while cast in placenya 17.5 Mpa. Variations beam stirrups used without stirrups, stirrups spacing between 0.25 m and 0.15m. The beams are analyzed given the concentrated load at midspan. The analysis showed that the deflection of the beam without stirrups, beams with stirrups spacing between 0.25 m and 0.15 m respectively is 1.396 mm, 1.498 mm and 2.716 mm. Stiffness of the beam without stirrups, beams with stirrups spacing between 0.25 m and beams with stirrups spacing between 0.15 m respectively is 21.489 KN / mm, 21.36 KN / mm, 18.409 KN / mm. The bending moment beam without stirrups, beams with stirrups spacing between 0.25 a m and beams with stirrups spacing between 0.5 m succession is 22.5KNm, 24KNm, 37.5 KNM and third curvature beam models were analyzed in a row was 1.241 / mm, 1.332 / mm , 2.415 / mm.Keywords:Beam,finite element analysis software, semi-precast, stirrups reinforced.
Analisis Numerik Kuat Lentur Elemen Balok T Curved Tile Semi Pracetak Dengan Variasi Mutu Beton Cast In Place Rian Fajri Ramadanas; Ismeddiyanto Ismeddiyanto; Reni Suryanita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
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Abstract

T beam elements curved tile semi precast is a combination concrete precast with concrete cast in place, which aims to improve the efficiency construction of reinforced concrete structures. Quality concrete cast in place, can be influenced by various factors such as human error, weather and others. Thus the need to be studied further how the influence of variations in the quality of concrete cast in place. The purpose of this study is to analyze the results of the flexural strength T beam semi precast elements, especially against the load-deflection relationship, the moment-curvature, and the pattern of cracks caused. The study used curved tile T beam semi precast element with dimension of 60 cm width, height 18 cm, and a length of 300 cm. Quality of precast concrete is 22 MPa and the quality variations of cast in place concrete were 15 MPa, 19 MPa, 20 MPa, 22 MPa and 25 MPa. The axial load of T beam Model increased, starting from zero up to fail. Base on the finite element analysis software improved, the received axial load greater the 20,51 kN, 21,00 kN, 23,47 kN, 23,67 kN and 23,80 kN. For the moment curvature analysis results, with increases in the quality of concrete, moment that occurs is also increasing the 20,51 kNm, 21,00 kNm, 23,47 kNm, 23,67 kNm and 23,80 kNm. Cracks that occurred on all elements of T semi precast beams are cracked flexural, where the bending moment occurred on the area's largest. Therefore this study can be an additional reference to community and alternative in the manufacture of semi precast T beam element, as well as understanding of the use of computer applications in the identification of mechanical properties of concrete.Keywords: Cast In Place Concrete, Curved tile, Finite Element Analysis Software, Flexural Strength, Concrete Precast, T Beam
Co-Authors Alex Kurniawandy Ardiansyah, M. Syukri Ari Vera Indra Ariadi, Koko Putra Arif Rahman Bagus Rizkya putra Bambang Sujatmoko Bobby Ansyari Buchori Buchori Edy Saputra Edy Saputra Elianora - Elsyani Eka Putri Enno Yuniarko Enno Yuniarto Fadillah, M Lucky Fitri Lestari Gunawan Wibisono Hasmiyati Hasmiyati Herol, Herol Ibnu Munawar Mizam Ika Qoriah Nursuci Iqbal Maulia Irvan, Ridho Kurnia Putra Iskandar Romey Sitompul Kamaldi, Alfian Khairul Amri Leo Sentosa Lili Purwati M Edwar Hidayat Maharani Rahma Annisya Mardani Sebayang Monita Olivia Muhammad Gilang Indra Mustainul Murtadho Nopember Toni Nopember Toni, Nopember Novan, Andre Prayogo Pratama Rendy Wijaya Reni Suryanita Revina Oktaviani Reza Ermawan Rian Fajri Ramadanas Rianti Ratna Dewi Ricky Andriano Ridwan Ridwan Rinaldi Rinaldi Satibi, Syawal Siregar, Syarif Hidayat Sitanggang, Ronal Rius Sopian sopian Sri Fatma Reza Steffani, Anggia Vindi Trisatria Wahyu Muhammad Firdaus Yoga Ornando Yogie Pranata Yohanna Lilis H Yudi Sandro Bara Tondang Zulfikar Djauhari Zulfikar Djauhari