Article Per Year (5 Year)
p-Index From 2021 - 2026
0.702
P-Index
This Author published in this journals
All Journal Jurnal Sains dan Teknologi Jurnal Teknik Sipil Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains APTEK
Zulfikar Djauhari
Unknown Affiliation
Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Electrical & Electronics Engineering Engineering Mechanical Engineering Transportation

Published : 39 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 39 Documents
Search

 1   2   3   4 
Pengaruh Penambahan Limbah Sisa Penyaringan Minyak Kelapa Sawit Sebagai Bahan Tambah Terhadap Kuat Tekan Dan Kuat Lentur Beton Muhammad Gala Garcya; Zulfikar Djauhari; Alex Kurniawandy
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5, No 1 (2018): Wisuda April Tahun 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

The research aims to obtain the characteristic of concrete using Spent Bleaching Earth (SBE) as substitute material on normal concrete. It is focused on compressive strength, setting time, and flexure strength. The percentage of SBE it used are 0%, 2%, and 4% of the cement weight. The result show SBE is not suitable to be a cement replacement because it show the decrease of compressive and flexure strength. But the setting time on SBE is slower than 0% SBE substitution and need more time to harden than normal concrete.Keywords : Spent Bleaching Earth, setting time, compressive strength, flexure strength
Perbandingan Analsa Kapasitas Sambungan Balok - Kolom Konvensional Dan Pracetak Sistem U-Shell (Studi Kasus Gedung A Rumah Sakit Pendidikan Universitas Riau) Nasrullah Nasrullah; Zulfikar Djauhari; Iskandar Romey Sitompul
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Precast concrete construction have a lot of excellence compared to conventional system. this system excellence, for example well guaranted quality, produce quickly and mass, development which quickly, natty and environmental friendliness with good product quality. Precast system which have been proven by its excellence is certifiable and become solution to replace conventional system. That is seen to the number of building in Pekanbaru used precast system. One other newest is building University of Riau Educational Hospital. This hospital use precast concrete type U-Shell. The part that becoming attention from precast system is beam- column connections. Beam-column connections represent very important part in transferring forces precast element jointed. When is not planned better hence the connection can collapse of precast structure, so that can alter hierarchy which wish reached structure. This research have compared to momen and shear capacities between conventional beam- column connection and precast U-Shell. The result that obtained is difference of maximum confined concrete stress at corner connection (A), eksterior (B) and the interior (C) that is equal to 49,98 Mpa, 50,41 Mpa and 51,31 Mpa. Total of confined moment capacities is equal to A = 587,38 kN.m, B = 632,83 kN.m and C = 745,60 kN.m. The difference of maximum concrete stress and moment capacities of connection resulted from difference of configuraton of longitudinal steel and difference number of beam that connecting A, B And C that is 2, 3 and 4 of beams. Keywords : precast, u-shell, conventional, confined, connection
Keruntuhan Progresif Gedung Struktur Beraturan Dan Tidak Beraturan Ardian Yolanda; Zulfikar Djauhari; 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

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

Abstract

This research aimed to examine the progressive collapse of regular and irregular structural building. This research conducted by analyzing the structural elements that were first destroyed due to addition of gravity load and lateral load of the earthquake. This analysis conducted by removing one or more critical columns with General Services Administration (GSA) guide. Examination of structural strength using finite element software based Demand Capacity Ratio (DCR) value. The regular structure will have progressive collapse if the DCR>2 and irregular structure will have progressive collapse if the DCR>1,5. Progressive collapse occurs when removal of five critical columns on the side of the regular structure, with the largest of DCR value is 4,665. In irregular structure, progressive collapse occurs when removal of four critical columns in middle of horizontal side of structure with the largest of DCR value is 3,44375. The analysis results show progressive collapse did not occurs when removal of single column from GSA guide. Progressive collapse only occurs after removal of some critical columns in pushover analysis results. This show that the structure is still capable to carrying the load when remove single column, but the structure is unable to carrying the load when some critical column were removed. Based on the deformation, the regular and irregular structures analyzed have progressive collapse of domino type. The value of robustness indicator is almost equal one, that indicated the load distribution is normal despite of the damage structure.Keywords : Progressive collapse, irregular structure, regular structure, GSA, DCR
Perbandingan Kapasitas Sambungan Balok Kolom Sistem Konvensional Dengan Sistem Pracetak Yang Menggunakan Dywidag Ductile Connector (DDC) Rachmat Hidayat; Zulfikar Djauhari; Iskandar Romey Sitompul
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Beam - column Joint is a critical part on a reinforced concrete frame structure which is designed specifically for inelastic deformating when obtain a strong earthquake . Beam - column Joint will get horizontal and vertical shear forces as a moment result from the column above and below it and moments of the beams when carry the load of the earthquake. Beam-column joint is a very important part when transfer forces between precast elements which are connected. Beam - column joint area should be planned well in order to avoid changes the force flow precast structure which result the collapse of the hierarchy which are achieved in the structure . when the system of structure is changed from conventional to precast, it should be needed a good analyze to get an accuracy capacity in the critical region structural elements . In this study is obtained a moment and shear capacity of the structure which is put on any type of soil between conventional beam-column connection and a precast use Dywidag Ductile Connector. The result show that there are a differences between two types of connections in moment and shear capacity what are placed in difference soil conditions . The greatest of moments capacity is in the conventional beam column connection, that is SE = 271.25kNm, SD = 222.40 kNm , SC = 199.35 kNm, SB = 162.20 kNm, SA = 162.20 KNm. While The greatest of shear capacity is in the precast beam column connection, that is SE = 1318.21 kN , SD = 1019.80 kN , SC = 1019.80 kN, SB = 878.80 kN, SA = 679.87 kN. it is caused of type of method in calculating for the capacity of conventional systems and precast connector with ductile connector type.Keyword : Precast, Conventional, Ductile Connector, Beam – Column Connection
Pengaruh Penambahan Serat Tebu Terhadap Sifat Fisik Pada Campuran Beton Normal Ahmad Obi Narman; Zulfikar Djauhari; Reni Suryanita
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

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

Abstract

This research aims to study the physical properties of concrete with the use of bagasse. The research consisted of 3 tests, they were porosity, shrinkage, compressive strength. The bagasse used were 0.3%, 0.5% and 0.7% of total weight of coarse aggregate. The specimen was tested at 7, 14, and 28 days. The test result showed that the porosity of specimens containing bagasse were higher than that of the control specimen, BN. The porosity of specimen BST 0.7% was 19.3% higher comparing to that of BN. Furthermore, the compressive test showed that the compressive sthrength specimen BN was 25.653 MPa, it was higher than that of specimens containing bagasse fiber. The concrete shrinkage test showed that the predicted shrinkage according to ACI 209 was higher than that of gained from the direct measurement. The shrinkage value for the ACI 209 method was 218 μm. Based on the results of direct measurement, the highest shrinkage value obtained on specimen containing 0.7% fiber concrete was 88 μm. .Keywords : Bagasse, Porosity, Shrinkage, Compressive Strength
Evaluasi Rangka Beton Bertulang Dengan Dinding Geser Menggunakan Fema 310 (Studi Kasus Pada : Gedung Menara Dang Merdu Bank Riau) Muhammad Rizky; Alex Kurniawandy; Zulfikar Djauhari
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

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

Abstract

The earthquake is a natural disaster that is very difficult to predict the time and location of occurrence. A relatively short process very inversely proportional to the impact. Planning for building must be considered for anticipated damage that will occur as a result of an earthquake. This study aims to conduct a thorough evaluation of the performance of the structure of the Building Dang Merdu Tower of Bank Riau against earthquake hazards by using the FEMA 310 document. The evaluation was conducted on the evaluation of the first phase of the checklist method FEMA 310, the second phase of evaluation with linear static methods and evaluation of the third phase of the method static nonlinear (pushover). Based on FEMA checklist Building Dang Merdu Tower of Bank Riau does not meet the requirements at the soft story investigation. Stiffness of the first level of less than 70% on the stiffness of the second level. Based on a linear static analysis for equivalent static earthquake load story drift value does not meet the requirements story drift permit SNI 1726-2012 while the earthquake response spectrum meet the requirements. Based on the pushover analysis level of the performance Building Dang Merdu Tower of Bank Riau is O (Operational) on ATC-40.Keywords: FEMA 310, linear static, pushover, performance of the structure, inelastic drift
Sifat Mekanik Beton Dengan Crumb Rubber Sebagai Bahan Tambah Pada Beton Serat Perkerasan Kaku Ilham Sordiman; Monita Olivia; Zulfikar Djauhari
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

This study examines the effect of crumb rubber on the mechanical properties of rigid pavement fiber concrete as an added material to increase the flexibility of rigid pavements. The specimens were tested mechanically such as compressive strength, tensile strength and flexural strength for 7, 14 and 28 days. The results showed that optimum compressive strength occurred at a percentage of 2% crumb rubber, but for the effectiveness of using rubber waste without sacrificing the compressive strength of the plan using a percentage of 4% crumb rubber. The value of the compressive strength of concrete PCC Normal and PCC +4% crumb rubber experienced a steady increase. The value of PCC +4% split tensile strength crumb rubber showed lower results than normal PCC concrete. PCC +4% concrete flexural strength of crumb rubber has a higher value than normal PCC concrete. Based on the results of these tests it was concluded that PCC +4% concrete crumb rubber had mechanical properties on increasing compressive strength which remained stable and better flexural strength, but the tensile strength showed a decrease in normal PCC concrete. Keywords: Crumb rubber, fiber concrete, rigid pavement, PCC, mechanical properties
RESPONS RESPONS STRUKTUR SISTEM FLAT SLAB-DROP PANEL PADA GEDUNG BERTINGKAT TIDAK BERATURAN TERHADAP BEBAN GEMPA DENGAN ANALISIS RESPONS SPEKTRA: KINERJA STRUKTUR GEDUNG Harriad Akbar Syarif; Zulfikar Djauhari
Aptek Jurnal Apliksai Teknologi (APTEK): Volume 11, No. 02, Juli 2019
Publisher : Fakultas Teknik Universitas Pasir Pengaraian

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (139.037 KB) | DOI: 10.30606/aptek.v11i2.65

Abstract

Penelitian ini berkaitan dengan sistem pelat lantai yang sering lakukan pada kegiatan konstruksi gedung. Sistem pelat lantai tersebut yaitu sistem balok-kolom dan sistem flat slab-drop panel. Dengan tipikal denah struktur yang sama, struktur dibagi menjadi dua model, yaitu Model A (kondisi eksisting) dan Model B (sistem flat slab-drop panel). Kedua model tersebut terletak di daerah Kota Pekanbaru dengan fungsi bangunan sebagai hotel, dan dimodelkan sebagai struktur rangka pemikul momen khusus (SRPMK). Analisis gempa menggunakan analisis dinamik respons spekta dengan bantuan softwere elemen hingga yang mengacu pada Tata Cara Perencanaan Ketahanan Gempa untuk Bangunan Gedung SNI 1726-2012. Hasil analisis respons struktur yang dilakukan berupa nilai displacement, gaya geser dan tingkat kekakuan. Model B memiliki respons yang baik terhadap gaya gempa yang bekerja. Model B tersebut memakai sistem flat slab-drop panel pada setiap lantainya. Sedangkan Model A memakai sistem gabungan antara flat slab-drop panel dengan balok-kolom (kondisi eksisting).
Menganalisis Pengaruh Ketidakberaturan Horizontal Torsi Terhadap Beban Gempa Pada Struktur Gedung Sistem Flat Slab-Drop Penel Harriad Akbar Syarif; Zulfikar Djauhari; Ridwan .
Aptek Jurnal Apliksai Teknologi (APTEK): Volume 13, No. 01, Januari 2021
Publisher : Fakultas Teknik Universitas Pasir Pengaraian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30606/aptek.v13i1.531

Abstract

Penelitian ini bertujuan menganalisis pengaruh ketidakberaturan horizontal torsi. Struktur gedung berada di Kota Pekanbaru dengan fungsi sebagai hotel yang terdiri dari 19 lantai dengan ketinggian 62,1 m menggunakan material beton bertulang. Struktur gedung didesain dengan pembebanan gempa rencana yang menggunakan analisis respons spektum berdasarkan SNI 1726-2012. Pemodelan struktur gedung menggunakan tipikal denah struktur yang sama. Struktur dibagi menjadi dua model, yaitu Model A (dua lantai tingkat bawah menggunakan sistem flat slab-drop panel) dan Model B (keseluruhan lantai tingkat menggunakan sistem flat slab-drop panel). Hasil penelitian menunjukkan pada simpangan perpindahan, model A sebesar 1109,35 mm dan Model B sebesar menghasilkan simpangan perpindahan 1091,4 mm. Ketidakberaturan horizontal torsi ditinjau pada masing-masing lantai tingkat berdasarkan arah X dan Y. Ketidakberaturan torsi Model A pada arah X dan Arah Y dikategorikan memiliki ketidakberaturan torsi. Sedangkan ketidakberaturan torsi berlebih untuk arah X lantai tingkat 13, 14 dan pool deck tidak dikategorikan torsi berlebih, tetapi untuk arah Y semua lantai tingkat dikategorikan memiliki ketidakberaturan torsi berlebih. Sedangkan untuk Model B, ketidakberaturan torsi pada arah X dan Arah Y pada setiap lantai tingkat dikategorikan memiliki ketidakberaturan torsi. Ketidakberaturan torsi berlebih untuk arah X lantai tingkat 8 sampai dengan tingkat pool deck tidak dikategorikan torsi berlebih, akan tetapi lantai tingkat semibasement sampai dengan tingkat 7 dikategorikan memiliki ketidakberaturan torsi berlebih. Untuk arah Y semua lantai tingkat dikategorikan tidak memiliki ketidakberaturan torsi berlebih. Jika dibandingkan antara Model A dan B, Model B lebih dapat menahan momen torsi berlebih dibandingkan dengan Model A. Pengaruh momen torsi tersebut disebabkan adanya eksentrisitas antara pusat massa bangunan dengan pusat rotasi bangunan.
Co-Authors Afwan Eka Putra Ahmad Obi Narman Ahmad Zulfitri Alex Kurniawandy Andi Wijaya Anggi Agusstiawan Ardian Yolanda Bagus Rizkya putra Debby Mayangsari Dhika Fazrian Dian Nanda Islami Enno Yuniarto Ermiyati Ermiyati Fajar Priandoko Florisa Florisa Garcya, Muhammad Gala Harriad Akbar Syarif Heru Setiadi Ilham Sordiman Iskandar Romey Sitompul Ismeddyanto, Ismeddiyanto Kurnia Desmilestari Mirza Afrian Monita Olivia Muhammad Gilang Indra Muhammad Rizky Nasrullah Nasrullah Nevita Elisa Ockto Perry P Harahap Prayogo Pratama Rachmat Hidayat Rahmatul Firdaus Randi Yuzti Ramadhan Reni Suryanita Rezky Rendra Rezky Yusman Efendy Ridwan Ridwan Ridwan Ridwan Roni Suhendra Suriyati Suriyati Suziela Saila Syamsul Fikri Tengku Tantoni Yahya Widika Arfa A Yonna Rosianda Yuridho Alfi