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All Journal Jurnal Spektran IPTEK The Journal for Technology and Science Jurnal Konstruksia Prosiding Forum Studi Transportasi Antar Perguruan Tinggi Jurnal Teknik Sipil Jurnal Rekayasa Sipil dan Lingkungan Civil Engineering Journal Journal TEPAT: Teknologi Terapan untuk Pengabdian Masyarakat Jurnal Ilmiah Ecosystem Jurnal Penelitian Enjiniring Fakultas Teknik Unhas Nusantara Science and Technology Proceedings Lowland Technology International Prosiding Seminar Nasional Teknologi Industri Berkelanjutan Prosiding Seminar Nasional Teknik Sipil UMS
Irmawaty, Rita
Civil Engineering Department, Faculty Of Engineering, Hasanuddin University, Indonesia
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Journal : Civil Engineering Journal

 1 
Slope Reinforcement Model Scale Test With X-Block Karapa, Enos; Harianto, Tri; Muhiddin, A. B.; Irmawaty, Rita
Civil Engineering Journal Vol 8, No 3 (2022): March
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2022-08-03-014

Abstract

This study aims to determine the material composition and dimensions of X-block, develop a slope reinforcement model using X-block, evaluate the mechanical behavior of slopes that are reinforced with rock-bound by X-block, and analyze the performance of slope reinforcement using X-block. This research was conducted at Hasanuddin University's soil mechanics and civil engineering structure laboratory. The model scale test was employed in this study. The geometrical speciation of the test box is 150 cm in length, 60 cm in width, and 100 cm in height. The X-block model was produced using concrete with a FC of 25 MPa. The X-block was divided into two types: X-block type 1 and X-block type 2. Tensile strength testing is performed on the X-block. The slopes are made of clay soil and have a slope angle of 70 degrees. The loading test was conducted in three stages: without block, with X-block type 1, and with X-block type 2. The loading test uses a hydraulic pump equipped with a load cell and LVDT. The tensile strength of X-block type 1 is 2.56 MPa, whereas X-block type 2 has a tensile strength of 4.35 MPa. The development of the type X-block design, which is used as a retaining wall material, has shown that it can effectively withstand landslides on the slopes under consideration. The slope safety factor rose dramatically after being reinforced with type X-blocks, reaching 2.73 for both X-block type 1 and X-block type 2. Doi: 10.28991/CEJ-2022-08-03-014 Full Text: PDF
Performance of Retrofitted Square Reinforced Concrete Column using Wire Mesh and SCC Subjected to Cyclic Load Hence M. Wuaten; Herman Parung; A. Arwin Amiruddin; Rita Irmawaty
Civil Engineering Journal Vol 7, No 4 (2021): April
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/cej-2021-03091685

Abstract

One way to restore or increase the strength of the structure against earthquakes is to use retrofit method and wire mesh is a material that has high prospects as retrofit material. The purpose of this study was to examine the use of wire mesh as a retrofit material on reinforced concrete columns burdened with cyclic loads. In this study, testing of 3 square column samples of reinforced concrete with dimensions of 300  300 mm. The first specimen is fully retrofit on the entire cross-section of the column, the second specimen is retrofitted on the plastic hinge area of the column and the third specimen is a control column without retrofit. In the first and second specimens were retrofitted with wire mesh size M6 using SCC which was then tested with a cyclic load using displacement control method based on the provisions stipulated in the Indonesian Standard SNI 7834:2012. From the test results and analysis results, it was found that the capacity and ductility of displacement in retrofit specimens increased significantly compared to specimens that were not retrofit. In addition, the decrease in stiffness in retrofit specimens was smaller than in non-retrofit specimens. As for the value of energy dissipation in fully retrofit specimens and in retrofit on the plastic hinge area is almost close. Based on these conditions, the use of wire mesh size M6 and SCC can be used as retrofit material on the column that is burdened with cyclic load. Doi: 10.28991/cej-2021-03091685 Full Text: PDF
Performance of Fly Ash Concrete with Nickel Slag Fine Aggregate in the Marine Environment Syamsul Bahri Ahmad; Rita Irmawaty; Sumarni Hamid Aly; A. Amiruddin
Civil Engineering Journal Vol 8, No 12 (2022): December
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2022-08-12-010

Abstract

This research aims to assess the feasibility of the mechanical strength and the durability of the concrete containing 50% nickel slag and a combination of 15% and 30% fly ash with a water-cement ratio of 0.25 and 0.45 in a marine environment. Four types of concrete, namely OPC-sand (C) as control concrete, OPC-50GNS (S), 15FA-50GNS (F1), and 30FA-50GNS (F2) as comparison concrete, were tested with a 100×200 mm cylindrical specimen. The results showed an increase in the mechanical strength and potential resistance of the comparison concrete at the age of 28 days. While at the age of 180 days, fluctuating changes were found. The compressive strength of S concrete increased by 36.9 and 9.3% respectively, F1 concrete by 37.7% and 1.7%, F2 by 33.7% and 5.9% at ratio 0.45 and 0.25. Likewise, the value of the split tensile strength and modulus of elasticity of concrete. This result was followed by reduced porosity, sorptivity, and chloride penetration resistance as an indication of better concrete durability. Fly ash appears to have a greater positive impact on potential durability than mechanical strength at a water cement ratio of 0.25 versus 0.45. Although the chloride penetration resistance is decent, the compressive strength of concrete with a water-cement ratio of 0.45 does not qualify for application in the marine environment. In contrast, concrete with a water-cement ratio of 0.25 containing 50% nickel slag and the addition of class C fly ash up to 30% was declared suitable for application to concrete in the marine environment zone C2 according to ACI 318-19. Doi: 10.28991/CEJ-2022-08-12-010 Full Text: PDF
Co-Authors A Antonius A. Amiruddin A. Arwin Amiruddin A. Arwin Amiruddin A. Arwin Amiruddin Abdul Rahman Djamaluddin Achmad Bakri Muhiddin Andi Arwin Amiruddin Andi Arwin Amiruddin Andy Suryanto Ardi Arsyad Armin Aryadi Arwin Amiruddin Arwin Amiruddin Bambang Bakri Caronge, Muhammad Akbar Darwis, Mardis Djamaluddin -, Djamaluddin Djamaluddin, Rudy Enos Karapa Fakhruddin - Fakhruddin Fakhruddin Harusi, Nurul Masyiah Rani Hence M. Wuaten Hijriah Hijriah Husein, Saddam - Irwan Ridwan Rahim Jasman Karapa, Enos Kwandou, Robby Muhammad Wihardi Tjaronge Muhiddin, A. B. Multasam Multasam Muralia Hustim Mushar, Pratiwi Novita Pradani P Purwanto Parung, Herman Rahim, Irwan Ridwan Robby Kwandou Rudy Djamaluddin Ruminsar Simbolon Sandri Linna Sengkey Sariman, Syahrul Sitti Hijraini Nur Sugira Said Sumarni Hamid Aly Sumarni Hamid Aly Syamsul Bahri Ahmad Syamsul Bahri Ahmad Tengku Riza Zarzani N Tri Harianto Tri Harianto Wahyu Mahendra Tria Atmadja Wihardi Tjaronge Yulius Rakhman Zultan Mansur, Achmad