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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)
Zulfikar Djauhari
Jurusan Teknik Sipil, Universitas Riau
Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Electrical & Electronics Engineering Engineering Mechanical Engineering Transportation

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KINERJA STRUKTUR AKIBAT BEBAN GEMPA DENGAN METODE RESPON SPEKTRUM DAN TIME HISTORY Rendra, Rezky; Kurniawandy, Alex; Djauhari, Zulfikar
Proceedings ACES (Annual Civil Engineering Seminar) Vol 1 (2015): Annual Civil Engineering Seminar (ACES)
Publisher : Proceedings ACES (Annual Civil Engineering Seminar)

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Abstract

Gempa bumi merupakan bencana alam yang sangat sulit diprediksi kapan dan dimana lokasikejadiannya, proses terjadinya relatif singkat tetapi akibat yang ditimbulkan bisa sangatberbahaya. Desain bangunan tahan gempa menjadi suatu hal yang wajib untuk diterapkandalam perancangan suatu bangunan. Untuk mengetahui perilaku struktur akibat beban gempaperlu dilakukan analisis dinamik. Dalam penelitian ini terdapat dua metode dinamik yangdigunakan yaitu metode respon spektrum dan time history. Struktur yang dianalisis dalampenelitian ini adalah Gedung Hotel SKA Pekanbaru. Penelitian ini mengkaji kinerja strukturgedung yaitu story shear, displacement dan simpangan lantai ketika menerima beban gempa.Respon spektrum yag digunakan adalah respon spektrum kota pekanbaru berdasarkan SNI1726-2012 sedangkan riwayat gempa yang digunakan dalam penelitian ini adalah riwayatGempa El Centro, Gempa Mentawai, Gempa Aceh dan Gempa Padang. Analisis denganmetode respon spektrum menghasilkan level kinerja Damage Control (DC) pada arah Xmaupun arah Y. Analisis dengan meggunakan metode time history menghasilkan level kinerjayang berbeda-beda untuk masing-masing gempa. Level kinerja tertinggi yaitu StructuralStability (SS) terjadi pada gempa El Centro dan Gempa Padang. Level kinerja DamageControl (DC) terjadi pada gempa Aceh. Level kinerja paling rendah yaitu ImmediateOccupancy (IO) terjadi pada gempa Mentawai. Level kinerja pada arah X dan Y sama untuksetiap data time history gempa.Kata kunci: Analisa Dinamik, Level Kinerja, Respon Spektrum, Time History.
Pengaruh Penambahan Serat Kawat Bendrat Berbentuk “U” Terhadap Sifat Mekanis Beton Irvan, Ridho Kurnia Putra; Ismeddiyanto, Ismeddiyanto; Djauhari, Zulfikar
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

Concrete is the main ingredient in the construction world, because the concrete is easy to work and economical in terms of cost, but the concrete is considered to have low tensile strength compared with the compressive strength, so the need for effort in improving the mechanical properties of the concrete mixing fiber in concrete mixture is wrong One attempt to improve the mechanical properties of concrete one of them by using fiber wire bedrators formed into "U" with a total length of 9 cm. The specimen consists of a cylindrical specimen with a diameter of 150 mm and a height of 300 mm and a beam with a length of 600 mm, a width of 150 mm, and a height of 150 mm. The fiber length used is 9 cm with 0.0%, 0.25%, 0.50%, 0.75% 1.0% of the fiber mass variation from the aggregate fraction. Non-fiber concrete is made for comparison. The method of mixing fiber into the concrete mixture is randomly after the concrete is evenly mixed. The results showed compressive strength, splitng tensile strength and maximum bending strength at 0.5% fiber variation. According to the results of the study, the addition of wire fiber to concrete mixture can improve the mechanical properties of concrete and in the optimal fiber variation can be at 0.5%.Keywords : fiber concrete, fiber wire bedrators, compressive strenght, splitting tensile strength, flexural strength
Respon Struktur Portal Baja Akibat Beban Gempa Dengan Analisis Riwayat Waktu Nonlinier Syauqi, Muhammad; Suryanita, Reni; Djauhari, Zulfikar
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

Earthquakes are dynamic loads that greatly affect the state of the building structure. If the strength of the building can not withstand the dynamic load, then the building will be damaged even will collapse. The purpose of this study was to identify the structural response in the Indonesian quake region by using nonlinear dynamic analysis. Structural modeling using Banda Aceh, Bengkulu and Pekanbaru earthquake locations with medium soil condition on a 10-storey building made of steel with a constant inter-floor height of 4 m. Time history analysis in earthquake plan using 3 accelerated earthquake accelerator, namely: Kobe, Imperial Valley and Chichi earthquake. Each earthquake accelerator was given three treatments: 1). The earthquake scale is decreased by 50% (0.5 g), 2). Normal earthquake scale (1 g), and 3). The scale of the earthquake is increased by 200% (2 g). The analysis results show that the displacement, velocity, and acceleration of earthquake-load structures in each region are directly proportional to the increasing or decreasing of the earthquake-scale in buildings that do not occur in plastic joints.Keywords : steel portal structure, response, displacement, velocity, acceleration, time history analysis
Pengaruh Bahan Tambah Bakteri Bacillus Subtilis Terhadap Kuat Tekan Dan Kuat Lentur Beton Di Lingkungan Sulfat Fitrana, Yaniarto; Djauhari, Zulfikar; Yuniarto, Enno
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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Abstract

The application of concrete to the sulfate environment potentially cause damage to concrete. The use of bacteria in concrete can be a concrete innovation to recover concrete (Self Healing Concrete) from the problem of concrete cracks. This study was conducted to examine the effect of Bacillus Subtilis bacteria on compressive strength and flexural strength of concrete in the sulfate environment. This research was conducted by adding 25 ml Bacillus Subtilis bacteria with concentration of 105 CFU/ml into a concrete mixture. Test objects were plain concrete beams with a size of 60x15x15 cm and cylinders with a diameter of 15 cm and a height of 30 cm. The variation of test specimens consisted normal concrete soaked in normal water (BNN), bacterial concrete soaked in normal water (BBN) and bacterial concrete soaked in sulfate solution (BBS). Two tests were carried out, namely compressive strength test and flexural strength test. The test result showed that the compressive strength of BBS at the age of 28 and 56 days was 14% and 24% lower then that of BNN. Comparing to BBN, compressive strength of BBS at 28 and 56 days were lower 26% and 34%, respectively. Furthermore, the test result showed that the flexural strength of BBS at the age of 28 and 56 days was 14% and 9% higher than that of BN. Comparing to BBN, flexural strength of BBS at 28 and 56 days were higher 13% and 2%, respectively. The addition of bacteria to the concrete in the sulfate environment increases the flexural strength of the concrete.Keywords: Self Healing Concrete, sulfate environment, Bacillus Subtilis, compressive strength, flexural strength. 
Ketahanan Mortar Campuran Serbuk Karet Terhadap Suhu Tinggi Widya, Diah; Djauhari, Zulfikar; Olivia, Monita
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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Abstract

The growing of automotive industry along with the increasing need for tire production cause to many waste tire. To solve this problem, many innovative solution have been proposed, namely the use of rubber tires as an added material in the manufacture of concrete mixture This is due to its flexible nature so as to increase the ductility of concrete. This research aims to study how compressive strength of mortar are resistant to high temperatures with materials added to waste tire used in powder form. Variations in the content of rubber powder used were 0%, 2.5%, and 5% of the weight of cement. Mortar was burned at temperatures of 250ºC, 500ºC, and 750 ° C for 3 hours. The results of the research and compressive strength with room temperature showed that OPC with the addition of 5% rubber powder had the highest compressive strength of 18.20 MPa. But when the mortar experienced a temperature higher than 250 ° C, the mortar strength decreased by 10%, with the addition of tire rubber powder as much as 5% with a compressive strength of 15.92 MPa, making the mortar had a better compressive strength than without the addition of powder rubber. Moreover the optimum temperature in mortar testing was at a temperature of 500 ° C with 5% rubber powder mixture. OPC mortars that were burned at 500 ° C and 750 ° C experience a hair cracking the mortar surface.Keywords:, Rubber powder, mortar, OPC, high temperature.
KERUNTUHAN PROGRESIF GEDUNG BERATURAN SISTEM GANDA Fazrian, Dhika; Djauhari, Zulfikar; Ridwan, Ridwan
Jurnal Teknik Sipil Vol 14, No 3 (2017)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (741.764 KB) | DOI: 10.24002/jts.v14i3.1980

Abstract

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 analyzed 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. Abstrak: Penelitian ini bertujuan mengkaji keruntuhan progresif struktur gedung beraturan sistem ganda akibat hilangnya salah satu atau lebih elemen struktur yang menyebabkan keruntuhan secara beruntun elemen yang ada didekatnya. Tiga kasus struktur bangunan dianalisis dalam penelitian ini dengan menggunakan perangkat lunak berbasis elemen hingga. Beberapa kolom di lantai petama pada struktur dihilangkan dan dianalisis hingga struktur mengalami keruntuhan progresif. Analisis statik nonlinier digunakan untuk menge-tahui bagian kolom kritis dan analisis statik linier untuk mengetahui nilai rasio kapasitas, momen lentur, dan ketahanan batas sesuai dengan kriteria GSA 2003 dan SNI 2847-2013. Kesimpulannya adalah terjadi keruntuhan progresif sesuai kriteria GSA 2003 pada kasus 1 dan kasus 2. Sedangkan untuk kriteria SNI 2847-2013 tidak terjadi keruntuhan progresif. Terjadi peningkatan momen lentur pada setiap kasus sesuai kriteria GSA 2003 maupun SNI 2847-2013 dan nilai ketahanan batas mendekati satu dengan tipe keruntuhan progresif adalah pancake.
Sifat Mekanik Bata Beton Dengan Penambahan Styrofoam Steffani, Anggia; Djauhari, Zulfikar; Ismeddyanto, Ismeddiyanto
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
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Technological advancements have directed infrastructure development in light and strong materials. Styrofoam can be used as a substitute for fine aggregates in concrete bricks, and can reduce the weight of concrete bricks with strengths that still meet the current standards The purpose of this study was to examine the effect of adding styrofoam to the mechanical properties of concrete bricks. In this study, the composition of the mixture used is 1 cement : 3 sand with variations of styrofoam as a substitute for sand at 0%, 5%, 10% and 15%. The size of the test object carried out in this study was 39x9x10 cm, the number of test items were 12 pieces and the treatment of the specimen was done by covering the test object with wet burlap for 28 days. The results showed that, the average compressive strength of the specimens contained 0% of styrofoam was 64.83 kg/cm2, 5% of styrofoam was 54.24 kg/cm2, 10% of styrofoam was 49.45 kg/cm2, and 15% of styrofoam was 45.75 kg/cm2. Furthermore, the compressive strength of specimens contained 0%, 5%, 10% and 15% of styrofoam was met the grade III of the concrete bricks criteria suggested by SNI 03-0349-1989. Keywords: Styrofoam, Concrete Brick, Compressive Strength.
FAKTOR DAKTILITAS KURVATUR BALOK BETON BERTULANG MUTU NORMAL (PEMANFAATAN OPEN SOURCE RESPONSE2000) Satiadi, Heru; Djauhari, Zulfikar; Suryanita, Reni
Proceedings ACES (Annual Civil Engineering Seminar) Vol 1 (2015): Annual Civil Engineering Seminar (ACES)
Publisher : Proceedings ACES (Annual Civil Engineering Seminar)

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Abstract

Perilaku daktail suatu balok beton bertulang salah satunya dapat dilihat dari nilai daktilitaskurvatur. Parameter yang digunakan untuk menentukan nilai daktilitas kurvatur adalah momendan kurvatur. Salah satu alat bantu yang memudahkan untuk menganalisis parameter tersebutadalah Response2000. Program Response2000 merupakan salah satu program yang dapatdigunakan untuk menganalisis berbagai perilaku balok beton bertulang, salah satu output yangdapat dihasilkannya adalah kurva hubungan momen dan kurvatur. Penelitian ini dilakukanuntuk mengkaji output dari Response2000 tersebut. Oleh karena itu untuk mencapai tujuantersebut, dilakukan pemodelan balok beton bertulangan tunggal tanpa sengkang, denganpemberian variasi pada mutu beton, mutu baja tulangan longitudinal, dan diameter tulanganlongitudinal. Model yang dianalisis berjumlah 12 model. Hasil kajian menunjukkan bahwapeningkatan mutu beton diikuti dengan meningkatnya daktilitas kurvatur. Sementarapeningkatan mutu baja tulangan dan diameter tulangan longitudinal menyebabkan penurunandaktilitas kurvatur.Kata kunci: balok, daktilitas, kurvatur, momen-kurvatur, Response2000
Pengaruh Penambahan Serat Ampas Tebu Terhadap Sifat Mekanik Pada Campuran Beton Normal Kampati, Tri Budi; Djauhari, Zulfikar; Suryanita, Reni
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
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Bagasse is a waste material and the use of this material for construction is still limiterd. In this study, fiber extracted from bagasse was used in teh concrete. This research aimed to examine the mechanical properties of concrete, namely compressive strength, bending strength and split tensile strength. The percentage of bagasse fiber used was 0.3%, 0.5% and 0.7% of the weight of coarse aggregate. Compresive strength was tested on the age 7 days, 14 days, and 28 days, while the flexural strength and split tensile strength were tested on the age of 28 days. Workability test conducted on specimens contained 0.3%, 0.5%, and 0.7% of bagasse showed the volume of slump at 8 cm, 6.5 cm and 4.5 cm. In testing the compressive strength of concrete, the highest value was produced from normal concrete which was 22.92 MPa.The value of flexural strength of concrete increased by 9.47% from the normal flexural strength of concrete with the addition of 0.5% bagasse at 4.45 MPa. Different with the value of concrete split tensile strength, the highest value was obtained in the addition of 0.3% bagasse, which was 2.21 MPa with an increase of 19.48% of normal concrete. This research concluded that the addition of bagasse fiber can reduce workability.On compressive strength testing with the addition of bagasse fiber, the compressive strength was lower than that of normal concrete but still within the range of concrete plan quality 17 MPa. Addition of bagasse fiber to the concrete mixture could increase the flexural strength by 0.5% and split tensile strength by 0.3%.With the addition of bagasse fiber to concrete, it is hoped that bagasse waste can be utilized and concrete quality is achieved Keywords: Fiber Concrete, Bagasse Fiber, Split Tensile Strength, Flexural Strength, Compressive Strength
Pengaruh Penggunaan Soil Stabilization Terhadap Sifat Fisik Beton Dengan Agregat Halus Berkadar Lumpur Tinggi Siregar, Syarif Hidayat; Ismeddiyanto, Ismeddiyanto; Djauhari, Zulfikar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
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This study examines the physical properties of concrete with high mud fine aggregate by adding soil stabilization. Based on SNI 03-2461-2002, it is stated that fine aggregate should not contain mud more than 5% of the weight. Soil stabilization as addition material in the mortar mixtures could increase the quality of concrete. This research aims to identify the influence of soil stabilization material to the performance of concrete that was the addition mixed with the fine aggregate that contain high percentage. The percentage of mud used in this study were 0%, 5%, 10%, 15%, 20% and 23% of the fine aggregate weight. Percentage of soil stabilization was 1% from concrete’s mud weight. The designed strength of concrete was 20 MPa. All samples were cured by soaking them in normal water for 28 days. The concrete physical properties observed in this study consisted of workability, sorptivity, and porosity. The results of the tests showd that the compressive strength of concrete with 20% variation mud level and added soil stabilization was 30,41% higher compared to concrete without soil stabilization. Sorptivity results in 5% of mud variation with the addition of soil stabilization had the lowest absorption of 16,10% lower than absorption compared to 10% sludge variation. Porosity values in 5% mud variation with the addition of soil stabilization have the smallest porosity of 15.81% lower compared to other mud variations. Based on the results of these tests it could be concluded that the strength of high mud concrete by adding soil stabilization was better than without soil stabilization. Keywords : Physical properties, sorptivity, tensile strength, porosity, soil stabilization, mud
Co-Authors Afrianda, Yogi Alex Kurniawandy Apryan, Yogi Raenaldo Arief, Naufal Arrahman, Feri Darmawan, Wan Fikri Enno Yuniarto Fazrian, Dhika Fazrian, Dhika Fitrana, Yaniarto Herol, Herol Heru Satiadi, Heru Ilham Akbar Irvan, Ridho Kurnia Putra Iskandar Romey Sitompul Ismeddiyanto, Ismeddiyanto 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