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INDONESIA
MEDIA KOMUNIKASI TEKNIK SIPIL
Published by Universitas Diponegoro
ISSN : 08541809     EISSN : 25496778     DOI : -
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
Media Komunikasi Teknik Sipil (ISSN 0854-1809) published twice in a year, in July and December. The article can be product of researches, scientific thoughts or case study, in civil engineering and isn’t formed by politics, commercialism, and subjectivity unsure. This scientific journal contains articles of thought and research results in Civil Engineering that have never been published in scientific journals or other media.
Arjuna Subject : -
Articles 16 Documents
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Search results for , issue "Volume 28, Nomor 2, DESEMBER 2022" : 16 Documents clear
Daya Tahan Mortar Geopolimer dan Mortar Semen Portland Pozzolan (PPC) terhadap Larutan Asam Sulfat Ilham Nurhuda, S.T., M.T., Ph.D.; Yulita Arni Priastiwi; Nuroji Nuroji; Variandi Ardidawa; Chazaidhan AlFahd Nizami
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 28, Nomor 2, DESEMBER 2022
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v28i2.46324

Abstract

The manufacture of cement is often criticized to produce high CO2 emission to environment. Reducing cement in construction is believed to be the solution for better environment. Portland pozzolan cement (PPC) is known as a more environmentally friendly cement which substitutes some portion of cement clinkers with pozzolanic materials such as fly ash. Another material which is considered as green material is Geopolymer. The purpose of this study is to investigate the durability of mortars made of PPC and geopolymer in the corrosive environment. The geopolymer mortar was made of fly ash with 25% white soil substitution, and also 8M NaOH and Na2SiO3 as activators. The corrosive condition was simulated by Sulfuric Acid solution (H2SO4) with a pH of 4. The durability of the two types of mortar was investigated by testing their compressive strength, direct tensile strength, porosity, density and the changes of mass and physical shapes after immersion. The results show that the immersion of the mortars in a solution of pH 4 sulfuric acid does not make any major effects on the performance of the PPC mortar. However, the performance of geopolymer mortar with 25% white soil substitution decreases after being immersed in sulfuric acid solution.
Kajian Perilaku Lentur Balok Finger Jointed Laminated Board (FJLB) Kayu Karet (Hevea Brasiliensis) M. Afif Shulhan; Ali Awaludin; Maris Setyo Nugroho; Sherly Octavia
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 28, Nomor 2, DESEMBER 2022
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v28i2.45714

Abstract

This study is aimed to determine the flexural behavior of Rubberwood FJLB (finger jointed laminated board) beams as building structural components. It was carried out through experimental approach and numerical analysis on six specimens of FJLB beams having a cross-section of 100 mm by 150 mm and a length of 2850 mm. The experiment was consisted of small specimen tests (BS-373:1957) and four-point bending test (EN-408) with two different cross-sectional orientations (flatwise and edgewise). The numerical analysis was performed by conducting 2-D finite element analysis developed in MATLAB program based on plane stress assumption. It was found that the average flexural capacity of beams tested under edgewise orientation was 24.6 kN, which is higher than that of the beams tested under flatwise orientation, 19.7 kN. However, the flexural stress (modulus of rupture) of those beams was about the same. All the beams experienced brittle failure caused by glueline failure between laminas or at finger joints. The results of strain measurement at mid-span of the beams throughout the test showed that the FJLB beams failed within elastic response. This finding was confirmed by the numerical analysis results.
Pemanfaatan Limbah Abu Batok Kelapa dan Kapur Hidrolis sebagai Bahan Substitusi Semen pada Paving Block Anita Intan Nura Diana; Nor Zainah
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 28, Nomor 2, DESEMBER 2022
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v28i2.36136

Abstract

Sumenep has a large amount of coconut shell ash waste from the briquette industry and a considerable potential for producing limestone (hydraulic lime). The development of road transportation infrastructure as a regional development in Indonesia using paving blocks has resulted in increased demand for cement. Utilization of waste and the potential of local materials must be endeavored by users, both of which have the same content as cement. The research method used an experimental method by replacing the cement with coconut shell ash waste and hydraulic lime, each of 0%, 5%, 10%, 15%, 20%. data analysis techniques using multiple linear regression method with the help of SPSS software. The results of the study with the help of SPSS software showed that the addition of variations in coconut shell ash waste and hydraulic lime did not have a simultaneous effect on the compressive strength and absorption of water. Laboratory research results show a maximum compressive strength of 18.616 Mpa and an average water absorption of 10.751% with the addition of each variation of 5% coconut shell ash waste and hydraulic lime, based on SNI -03-0691-1996 compressive strength including quality classification B, while absorption does not meet the requirements for absorption quality classification.
Analisis Karakteristik Campuran Laston Menggunakan Material Perkerasan Jalan Lama Dengan Peremaja Limbah Minyak Goreng I Nyoman Arya Thanaya, ME., PhD; I Made Agus Ariawan; I Putu Chandra Wibawa
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 28, Nomor 2, DESEMBER 2022
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v28i2.48137

Abstract

One alternative way to reduce the use of natural aggregate and asphalt is the use of recycled materials of old road pavement or Reclaimed Asphalt Pavement (RAP). The asphalt within the RAP generally had become stiffer due to ageing, therefore it needs to be mixed with a rejuvenating agent. An alternative organic oil-based refining agent that can be used for rejuvenating rigid asphalt is Waste Cooking Oil (WCO). The purpose of this study is to analyze the characteristics of asphalt mixtures at Optimum Bitumen Content (OBC) and at best WCO content. The asphalt mixture manufacturing method used was Marshall Method. The variation of RAP materials was 25% and 50%, with added aggregate material to meet the ideal mid gradation. For each variation of RAP content, was produced mixtures with variation of of 2%, 4%, 6%, 8%, and 10% (by weight of total asphalt) where for each of those variation of RAP with variations of WCO rejuvinating materials, were made asphalt content variation of 5%; 5.5%; 6%; 6.5%; and 7%, then the OBC was determined. For the mixture with 50% RAP, the OBC was 6.3%, with best result on 8% WCO. On misture with 25% RAP the  OBC was 6.2%, with best result on 4% WCO. The Marshall characteristics met the specifications. The mixture of 50% RAP with 8% WCO has lower stiffness and deformation resistance, however the performance of this mixtre was good enough on fatigue test.
Evaluasi Perilaku Seismik Akibat Ketidakberaturan Vertikal pada Bangunan Beton Bertulang Bertingkat Tinggi Hakas Prayuda; Ogata Wilasamba; Fadillawaty Saleh; Taufiq Ilham Maulana; Fadhila Firdausa
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 28, Nomor 2, DESEMBER 2022
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v28i2.41765

Abstract

This study investigated the behavior of high-rise reinforced concrete structures with vertical irregularities caused by seismic loading. The ability of the building to endure all of the load during operation should be considered in design process. The irregularities in the building cause to impair stiffness and performance of the structure, particularly during the earthquake. Therefore, it is necessary to evaluate the effects of vertical irregularities on building, especially high-rise buildings. This study employs an S-Shaped structure with five vertical irregularities. Numerical analysis was used by using STEDA 3D software. The dynamic load used is based on time history data from the previous earthquakes, including the El-Centro, Kobe, and Parkfield. The seismic behavior evaluated in this study consist of shear force, lateral deformation, structural stiffness, the relationship between base shear and top displacement, drift ratio, maximum acceleration response, capacity curve, and top orbit of the building. Based on the numerical analysis results, it can be concluded that each model has a different seismic performance even though it is given the same earthquake load and material properties. The vertical irregularity of the building greatly affects the behavior of the structure due to seismic analysis.
Analisis Probabilitas Bahaya Gempa di Ibu Kota Baru Indonesia Rocky Mountainshia; Paulus Pramono Rahardjo; Dega Damara Aditramulyadi
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 28, Nomor 2, DESEMBER 2022
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v28i2.44682

Abstract

Efforts to move the Capital of Indonesia to Kalimantan are intended to solve the problem of overpopulation in Jakarta, so it’s possible there are massive infrastructure development in the future. In this study conducted Probabilistic Seismic Hazard Analysis (PSHA) and made an earthquake hazard map that serves to analyze earthquake-resistant buildings for the New Capital of Indonesia. The PSHA and earthquake map was developed for 2% probability exceeded in 50 years or 2500-return period. The results of the analysis on three important periods, comprised of PGA, Ss, and S1 with a return period of 2500 years have higher acceleration at bedrock if performed by GMPE 2017 rather than GMPE 2010 for the period between PGA and 0.1s. Maximum earthquake acceleration on bedrock resulting from the creation of earthquake hazard maps in New Capital of Indonesia for period of PGA, 0.2s, and 1.0s at bedrock for return period of 2500 years is 0.2-0.25g, 0.4-0.5g, and 0-0.15g, respectively. The earthquake threat index in the New Capital of Indonesia is categorized as low according to Indonesia's National Board for Disaster Management (BNPB) regulations (PGA<0.2501g).
Pengaruh Rendaman Air Gambut terhadap Durabilitas AC-WC Amal Risky Harahap; Sugeng Wiyono; Elizar Elizar; Anas Puri
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 28, Nomor 2, DESEMBER 2022
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v28i2.42945

Abstract

Puddles such as peat water on the surface of the bending pavement can accelerate the aging process, disintegration and cause damage. The purpose of the study was to determine the effect of the aging process due to peat water soaking on the durability of the AC-WC mixture penetration 60/70 based on the Cantabro test. Research methods are laboratory tests that start from the design of asphalt concrete mixtures, determining KAO, LTOA tests, peat water chemical element tests. Soak asphalt concrete with peat water for 0, 1, 2, 4, and 7 days, CL Test and Marshall test. 7-day duration CL value 23.6%, stability 1805 kg, IDP 37%, IDK 34%. The chemical reaction element that causes LTOA is the oxidation reaction of asphaltenes due to the increase of the element oxygen that removes nitrogen (N) and alkyl chains (R). The chemical reaction element that causes aging due to peat water, namely organic substances affect the pH value depending on the number of lignin compounds. Lignin produces H ions that can accelerate aging. The pH value of peat water is 3, Na 78.81 mg/l, Fe 0.47 mg/l, organic substances 148.52 mg/l. 
Hubungan Kelandaian Jalan dan Panjang Landai Terhadap Kecelakaan Lalu Lintas Jalan Tol Rezza Irawan Widiarto; Bagus Hario Hario Setiadji; Bambang Haryadi
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 28, Nomor 2, DESEMBER 2022
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v28i2.43665

Abstract

The Semarang – Solo toll road at Km 437+200 – 439+400 is one of the unique segments because many double horizontal and vertical alignments are encountered along approximately 1,600 m. Although this segment geometrically can be considered quite good because it provides adequate stopping distance, the accident data from PT. Trans Marga Jateng showed that this segment is prone to accidents. This studyevaluated this segment's slope and slope length and their relationship to the potential for accidents. This segment was divided into three sections based on the slope and two vehicle types: light vehicles (LV) and heavy vehicles (HV). The results showed that the speed of LV was not significantly affected by slope and slope length variations, but this was not the case for HV. This condition results in a significant speed gap with great potential for accidents, especially at 00.00 – 06.00 and 12.00 – 18.00 when the driver is drowsy or fatigued. Therefore, an in-depth evaluation is recommended on the regulations allowing HVs to operate on toll roads, taking into account the weight-to-power ratio (PWR) and the maximum weight of the HV.
Simulasi Kenaikan Tekanan Air Pori Akibat Beban Timbunan Saat Fase Konstruksi Pembangunan Tanggul Togani Cahyadi Upomo; Dian Eka Aryanti; Rini Kusumawardani
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 28, Nomor 2, DESEMBER 2022
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v28i2.42215

Abstract

Banjir merupakan masalah tahunan di Indonesia yang menimbulkan dampak ekonomi, sosial maupun lingkungan. Salah satu upaya struktural pengendalian banjir adalah dengan membangun tanggul. Ketika membangun tanggul, permasalahan geoteknik yang muncul adalah meningkatnya tekanan air pori pada tanah fondasi tanggul yang berupa lempung jenuh. Untuk menghindari kelongsoran tanggul saat konstruksi, stabilitas tanggul harus dapat diprediksi saat tahap perencanaan. Metode B-bar yang dikombinasikan dengan analisis stabilitas lereng metode Bishop dapat digunakan untuk memprediksi besarnya perubahan tekanan air pori dan angka keamanan yang realistis. Hasil analisis menunjukkan bahwa analisis stabilitas lereng tanpa memperhatikan kenaikan tekanan air pori menyebabkan faktor keamanan yang relatif lebih besar, sehingga memberikan hasil perhitungan yang tidak realistis. Selain itu, dengan memperhatikan kenaikan tekanan air pori, stabilitas tanggul diatas lempung jenuh lunak menjadi kritis pada saat fase konstruksi.
Estimasi Nilai Ekuivalensi Mobil Penumpang untuk Simpang Tak Bersinyal di Yogyakarta Ratnasari Ramlan; Ahmad Munawar; Muhammad Zudhy Irawan
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 28, Nomor 2, DESEMBER 2022
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v28i2.34977

Abstract

Nilai Ekuivalensi Mobil Penumpang (EMP) diharapkan sangat tepat karena sangat penting dalam menentukan kapasitas, derajat kejenuhan hingga penanganan simpang tak bersinyal. Banyak metode yang telah digunakan dalam estimasi nilai EMP, namun berdasarkan literatur review menyatakan bahwa metode occupancy time dan metode kecepatan yang paling sesuai dengan kondisi simpang tak bersinyal.  Penelitian ini bertujuan untuk menentukan nilai EMP yang paling tepat dengan membandingkan metode occuoancy time dan metode speed. Untuk menentukan metode yang paling tepat dalam perhitungan EMP simpang tak bersinyal maka dilakukan perhitungan nilai kapasitas dan derajat kejenuhan berdasarkan metode speed dan occupancy time dan dibandingkan dgn nilai EMP MKJI. Hasilnya menunjukkan bahwa nilai EMP yang paling sesuai bagi simpang tak bersinyal adalah metode speed. Perubahan nilai EMP yang dianjurkan adalah EMP kendaraan tak bermotor= 0,45, EMP sepeda motor= 0,17, dan EMP kendaraan besar= 2,2. Penentuan nilai EMP yang  tepat diharapkan dapat memberikan hasil kinerja simpang dan penentuan masalah simpang yang akurat. 

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