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All Journal MEDIA KOMUNIKASI TEKNIK SIPIL Jurnal Sains dan Teknologi Jurnal Teknik Sipil Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Proceedings ACES (Annual Civil Engineering Seminar) APTEK Jurnal Ilmiah Telsinas Elektro, Sipil dan Teknik Informasi
Zulfikar Djauhari
Jurusan Teknik Sipil, Universitas Riau
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Transportation

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Pengaruh Penambahan Abu Ampas Tebu Terhadap Sifat Mekanik Beton Pada Campuran Beton Normal Akbar, Ilham; Djauhari, Zulfikar; Suryanita, Reni
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The increasing in the population has an impact on the increasing of housing or bulding demand. The alternative solution to reduce the use of cement is by leveraging on natural materials such as baggase ash as a substitution part of cement in the concrete mixtures. Results from test showed that silicte (SiO2) content in bagasse ash was dominant, so that it might be used as a cement substitution to enhance the properties of the concrete. The specimens were tested at 7, 14, 28 and 56 days of treatment to observe the development of bagasse ash concrete with the variation of the ash at 5 % and 10 % from the weight of the cement. The result showed that the higher percentage of bagasse ash would result lower workability. The compressive strength has also decreased from normal concrete at 28 days of the treatment, at 5 % variaton that has a compressive strength at 21,221 MPa and 10% variation has a result at 16.411 MPa. Propertional to compressive test, the flexural test has also decreased from normal concrete, at 5% variation has a flexural strength at 3.60 MPa and at 10 % variation has a result at 3.40 MPa. It was because imperfect of bond between Ca(OH)2 with SiO2. Hence, instead of cement substitute, bagasse ash rolled better as filler in concrete mixtures. Keywords: bagasse ash, concrete, compressive strength, flexural strength, workability
Analisis Keruntuhan Progresif Pada Struktur Gedung Tidak Beraturan Sistem Pelat Konvensional Apryan, Yogi Raenaldo; Djauhari, Zulfikar; Ridwan, Ridwan
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Progressive collapse is the collapse caused by the collapse of an element of the structure of the building which will then affect the nearby structure resulting in a collapse either partially or completely. In the urban area the development of construction technology of the structure is now increasingly advanced, the shape building structures are not only in regular but also in irregular. The irregular of the structure would cause progressive collapse of the building. Building collapse occurs due to the burden of earthquakes, gas blasts, and collisions from airplanes. This research aimed to analysys collapse behavior of the building structures consist of a conventional plate system. Analysis was conducted according to in General Service Administration (2003). The structural strength inspection was conducted finite the element by using software. Irregular structures experienced progressive collapse when demand capacity ratio more than 1.5. The results of the analysis showed that there was an increase in the moment ratio value to the column elements and beam elements induced by the deletion of one of the column elements, in some elements the demand capacity ratio value exceeded 1.5 which was then the building collapsed. The collapse occured on the part of the elements around the elimination of columns and the type of collapse of the building was classified as an pancake-type collapse.Keywords : Progressive Collapse, Irregular Structure, Slab, Demand Capacity Ratio, General Service Administration
Pengaruh Bahan Pengganti Sebagian Semen Terhadap Sifat Fisik Beton Dengan Menggunakan Abu Ampas Tebu Saputra, Yoga Aris; Djauhari, Zulfikar; Novan, Andre
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

This study examines the influence addition of sugar cane’s ash as a cement substitution material in concrete mixtures to the compressive strength, porosity and concrete shrinkage. Sugarcane ash used in this study came from Lawang, Matur, Agam Regency, West Sumatra. The percentage of sugarcane ash used as substitute material was 0%, 2.5% and 5% from the weight of cement. For the specimen containing 2,5% of sugar cane’s ash, the concrete compressive strength at 28 days was 29.61 Mpa, followed by sugar cane’s ash 5% was 28,86 MPa. Lowest compressive strength occurs in normal concrete of 28,44 MPa. In porosity test of the concrete the lowest value occurred in 2.5% sugarcane ash with a value of 9.71% at the age of 28 days, followed by sugar cane’s ash concrete porosity 5% was 11,73%. The largest porosity value occurs in normal concrete of 11,92%. The value of this porosity shows that the use of sugarcane ash at a percentage of 2.5% can increase the compressive strength of concrete. In concrete shrinkage testing, the results of the direct measurement test obtained the highest shrinkage value in normal concrete of 53 μm. The lowest shrinkage occurs in sugar cane’s ash concrete 5% was 45 μm, and sugar cane’s ash 2,5% of 50 μm.Keywords: sugarcane ash, compressive strength, porosity, concrete shrinkage
Sifat Fisik Bata Beton Dengan Penambahan Styrofoam Herol, Herol; Djauhari, Zulfikar; Ismeddyanto, Ismeddiyanto
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Indonesia is a country with a high seismic activity. Due to this reason, constructions in Indonesia must pay attention to every aspect, including the design, the construction process and materials. The use of concrete bricks on the wall has an impact on the loading of a structure. This research aimed to determine the effect of addition of styrofoam to the weight, density, water absorption and porosity of the concrete bricks. In this study, the composition of the mixture used was 1 cement : 3 sand with the variations of styrofoam as a substitute for sand at 0%, 5%, 10% and 15%. Test results showed that the average weight of concrete brick with 0% of styrofoam was 2.42 gr/cm3, 5% of styrofoam was 2,31 gr/cm3, 10% of Styrofoam was 2.29 gr/cm3, and 15% of styrofoam was 2.22 gr/cm3. The porosity of the concrete brick with 0% of styrofoam was 7.89%, 5% of styrofoam was 7.66%, 10% of styrofoam was 6.81%, and 15% of styrofoam was 4.62%. From water absorption test, the results showed that the average value of concrete brick with 0% of styrofoam was 3.70%, 5% of styrofoam was 3.63%, 10% of styrofoam was 3.34%, and 15% of styrofoam was 2.32%. The more styrofoam is added, the more the weight and density of the concrete was decreasing. The porosity and water absorption values of the concrete bricks was decreasing with the addition of styrofoam due to the waterproof property of styrofoam. The result of water absorption test showed that all concrete bricks tested were concrete bricks with quality I, that are concrete brick used for load bearing construction and are commonly used for unprotected construction (outside the roof) because of having a water absorption value smaller than 25%. Keywords: Concrete brick, styrofoam, weight, density, water absorption, porosity
Evaluasi Kesehatan Struktur Bangunan berdasarkan Respon Dinamik Berbasiskan Data Akselerometer Darmawan, Wan Fikri; Suryanita, Reni; Djauhari, Zulfikar
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 23, Nomor 2, DESEMBER 2017
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (528.455 KB) | DOI: 10.14710/mkts.v23i2.16101

Abstract

The aim of the research is to analysis the health of a simple frame structure based on accelerometer data. The research is a preliminary study which used the accelerometer data in the time history analysis of the structure. The parameters has been used in the study are the Story Damage Index (SDI), the ApproximateStory Damage Index (ASDI), the Flexibility Damage Index (MFDI), and the Park Ang Damage Index. The finite element analysis is used to identify the damage of building structures through the pushover analysis. The study has conducted the minor damage index, physical appearance to check the cracked beam andconcrete column. The damage index average is in the range 0-0.08. It can be concluded the building is still able to withstand the earthquake load. However, the building is stated in a minor damage condition after the earthquake occurred.
Analisis Perilaku Portal Baja Dengan Kekakuan Tingkat Lunak (Soft Story) Putri, Ade Septiani; Suryanita, Reni; Djauhari, Zulfikar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Structure with soft story effect will enlarge the lateral deformation and shear forces in the column so that the destruction of the columns is particularly vulnerable when subjected to thelarge forces. This research aims to analyse the actual structural behaviour affected by the earthquake load. The steel structure was design according to Indonesian Steel Structure Building Code (SNI 1729-2015) and also Indonesian Load Earthquake Resistance Code (SNI 1726-2012). To assess the structural behaviour, the Non-linier Time History Analysis (NLTH) was conducted using finite element software. The earthquake load employed to the structurewas modified Elcentro adjusted to goeology of Pekanbaru. The result showed that in structure with soft story had the maximum displacement of 97,13 mm in Y direction. Moreover, maximumshear forces observed on the structure with soft story mechanism increased by 42.13% and 37.80% on X and Y direction respectively compared to the previous floor without soft storymechanism. The result also showed that soft story mechanism affected to the dynamic responses of the structure.Keywords: soft story, earthquake, structure behaviour, time history analysis
Keruntuhan Progresif Gedung Beraturan Sistem Ganda Fazrian, Dhika; Djauhari, Zulfikar; Ridwan, Ridwan
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

This research aimed to examine the progressive collapse of dual system building structures due to the loss of one or more structural elements that lead to successive collapse of other elements. Three cases of building structures were analysed in this study using finite element software. Several columns on the first floor of the structure was removed and then the analysis was conducted to each structure until the progressive collapse existed. The nonlinear statics analysis was used to examine the location of the critical column while the linear statics analysis was carried out to find the demand capacity ratio, the bending moment ratio and robustness indicator as suggested by GSA 2003 and SNI 2847-2013. The results showed that the structure denoted in case 1 and case 2 that was loaded comply with GSA 2003 experienced the progressive collapse. On the other hand this phenomenon did not appear on the structure that was loaded in accordance with SNI 2847-2013. Furthermore, there was an increase in the bending moment capacity of the column/beam on all cases that were loaded comply with SNI 2847-2013 and GSA 2003. Robustness indicator is almost equal one with the type of progressive collapse is pancake collapse type.Keywords : Progressive Collapse, Demand Capcaity Ratio, Bending Moment Ratio And Robustness Indicator.
Pengaruh Abu Dasar (Bottom Ash) Sebagai Bahan Substitusi Pasir Pada Sebagian Sifat Beton Segar Dan Beton Keras Afrianda, Yogi; Kurniawandy, Alex; Djauhari, Zulfikar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The research is a continuation of previous research that aims to obtain the characteristic of fresh and hard concrete using bottom ash as substitute material sand on normal concrete. At this stage of research focused on analyzing the bulk density, workability, permeability and sulfate resistance. The percentage of bottom ash waste that is used are 0% and 30% of the weight of the sand. The results show that using 30% of bottom ash decrease the workability and bulk density on concrete. Meanwhile, the use of 30% bottom ash also increase the value of permeability on the concrete. On testing of sulfate resistance, concrete with 0% of bottom ash increases the compressive strength at age of 28 days, then will decrease at the age of 56 days and 90 days. As well as on the concrete with 30 % of bottom ash, the compressive strength decreases at the age of 56 and 90 days.Keywords : bottom ash, bulk density, workability, permeability, sulfate resistance
Pemanfaatan Abu Terbang (Fly Ash) Sebagai Bahan Subtitusi Semen Pada Sebagian Sifat Beton Segar Dan Beton Keras Panjaitan, Aprizal; Djauhari, Zulfikar; Kurniawandy, Alex
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The research aims to obtain the characteristic of fresh and hard concrete using fly ash as substitute material on normal concrete. It is focused on analyzing the bulk density, workability, setting time, permeability and sulfate resistance. The percentage of fly ash waste that is used are 0% and 30% of the weight of the cement. The results show that using 30% of fly ash decrease the workability and bulk density on concrete. Meanwhile, the setting time with 30% of fly ashsubstitution is faster compared to 0% fly ash substitution. The use of 30% fly ash also increase the value of permeability on those concrete. At the testing of sulfate resistance, concrete with 0% of fly ash increases the compressive strength at ageof 28 and 56 days, then will decrease at the age of 90 days. Meanwhile, for 30 % of fly ash, the compressive strength decreases at the age of 56 and 90 days.Keywords : fly ash, bulk density, workability, setting time, permeability, sulfate resistance
Perbandingan Perilaku Struktur Beton Dengan Tulangan Baja Dan Struktur Beton dengan Glass Fiber Reinforced Polymer (GFRP) Arief, Naufal; Ridwan, Ridwan; Djauhari, Zulfikar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Fiber Reinforced Polymer (FRP) was a composite material that has a tensile strength of 7 to 10 times the tensile strength of steel. FRP made from three types of composite materials, namely Carbon, Glass and Aramid. In this research, Glass-FRP material is used. FRP material tensile test results show a linear stress-strain relationship. Theoretically this indicates that FRP material was brittle, it was considered necessary to study the behavior of the structure using FRP material. This study aims to compare the behavior of steel reinforced concrete portal structures with FRP reinforced concrete portal structures in receiving earthquake loads. The analytical method used was the time history analysis used the 2009 Pariaman earthquake record, and the FRP reinforcement calculated refers to ACI 440-1R-2015. The amount of reinforcement needed in a concrete beam with GFRP reinforcement is the same as the reinforcement of a concrete structure beam with conventional steel reinforcement. That is because the amount of reduction required by ACI 440.1R-2015 for the calculation of GFRP reinforcement. The value of relative displacement in the structural model with GFRP reinforcement was 7.34% greater than the structural model with steel reinforcement. Velocity and acceleration values were 65% and 52.87%, respectively, which indicates that vibrations in structures with GFRP reinforcement during an earthquake were less pronounced than structures with steel reinforcement.Keywords: Reinforcement FRP, Convensional Steel Reinforcement, Reinforcement GFRP
Co-Authors Afrianda, Yogi Alex Kurniawandy Apryan, Yogi Raenaldo Ardyansah, Rofika Ratna Arief, Naufal Arrahman, Feri Darmawan, Wan Fikri Emiral Akbara Enno Yuniarto Fazrian, Dhika Fazrian, Dhika Fitrana, Yaniarto Herol, Herol Heru Satiadi, Heru Ilham Akbar Irvan, Ridho Kurnia Putra Iskandar Romey Sitompul Ismeddyanto, Ismeddiyanto Kampati, Tri Budi Misbakhul Munir Monita Olivia Muhammad Ilham Nanda Dwi Putri, Nanda Dwi Novan, Andre Panjaitan, Aprizal Putri, Ade Septiani Raja Parulian Purba, Raja Parulian Ramadhan, Rian Reni Suryanita Rezky Rendra, Rezky Ridwan, Ridwan Saputra, Yoga Aris Siregar, Syarif Hidayat Steffani, Anggia Syahyudi, Eki Syauqi, Muhammad Widya, Diah