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INDONESIA
MEDIA KOMUNIKASI TEKNIK SIPIL
Published by Universitas Diponegoro
ISSN : 08541809     EISSN : 25496778     DOI : -
Core Subject : Engineering,
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 14 Documents
Search results for , issue "Volume 25, Nomor 1 (2019)" : 14 Documents clear
Kualitas Beton SCC dengan Substitusi Agregat Halus Tailing Tambang Emas Daerah Pongkor Amalia, Amalia; Riyadi, Muhtarom
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 25, Nomor 1 (2019)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (662.615 KB) | DOI: 10.14710/mkts.v25i1.18500

Abstract

This paper presents the results of self compacting concrete (SCC) with water cement ratio 0.30 with four variations of tailings, ie 0%, 5%, 10% and 15%. Superplastisizer used is a type Naptha 511P of PT.Karya Naptha Belide. The results showed that (1) The use of tailings as fine aggregate in concrete SCC, has good workability. The fresh concrete that uses tailings, passing ability and filling ability is decrease. The use of tailings up to 15% of eligible properties filling ability and passing ability of SCC, (2) The more tailings used in SCC, setting time of concrete becomes longer, (3) Concrete with tailings as fine aggregate have unit weight is smaller than the concrete with fine aggregate sand, (4) Concrete with tailings has higher compressive strength and modulus of elasticity than concrete without tailings, (5)The use of tailings in concrete can lower tensile strength of concrete, (6)The optimum replacement of tailing found to be 10% in the concrete.
Pemodelan Perilaku Tegangan dan Regangan Beton pada Suhu Tinggi dengan Software LUSAS Suryanita, Reni; Rahmadhan, Wahyu; Kamaldi, Alfian
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 25, Nomor 1 (2019)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (767.458 KB) | DOI: 10.14710/mkts.v25i1.20575

Abstract

The concrete structure exposed to high temperatures can affect the strength of the structure. Limitations in the experimental method can be solved by mathematical modeling. This study aims to identify the stress and strain behavior that occurs at high-temperatures. The model is a cylindrical concrete with a diameter of 150 mm and a height of 300 mm. The concrete strength design is 25 MPa. The temperatures of the model are 100 °C, 200 °C, 300 °C, 400 °C, 500 °C, 600 °C, and 700 °C. The model analysis using LUSAS v. 16 Software to observe the properties of the concrete material due to exposure to high temperatures. The results of the study get the higher the temperature received by concrete, the strength of the concrete decreases. Concrete that burned to a temperature of 300 °C still had 82% available power, and at a temperature of 700 °C, the remaining concrete strength was 30%. The strain increases to 423% from normal conditions at a temperature of 700 ° C. Therefore, the results of the study can be used as a reference for structural engineers to know the behavior of the concrete that exposure to high temperatures.
Model Hubungan Kapasitas Rekatan Balok Beton Bertulang yang Diperkuat GFRP-S terhadap Lama Perendaman Air Laut Sultan, Mufti Amir; Djamluddin, Rudy
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 25, Nomor 1 (2019)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (529.722 KB) | DOI: 10.14710/mkts.v25i1.18754

Abstract

The construction of structures with reinforced concrete materials in coastal environments will face constraints in the form of chloride influences which can lead to a decrease in strength and even damage. One of the most popular reinforcement methods today is using a corrosion resistant Glass Fiber Reinforced Polymer (GFRP) material. This study was conducted to investigate the behavior of GFRP-S rectifying capacity in reinforced concrete beam reinforcement in 1, 3, 6, and 12 months. The test specimens consist of 10 reinforced beams with dimensions (15x20x330) cm that has been reinforced with GFRP-S in the bending area. Beams without immersion symbolized B0, immersion 1, 3, 6, and 12 months each given symbols B1, B3, B6 and B12. The test specimen is loaded statically until it fails. To record the data when testing is installed strain gauge and LVDT. From the result of the research, it can be seen that there is a decrease of GFRP-S rectification capacity in the test specimen after soaking in seawater. The value of the decrease in the capacity of the bonding can be predicted by using the equation
Opsi KPBU Proyek SPAM Regional Keburejo Provinsi Jawa Tengah: Pendekatan Manajemen Risiko Sutantiningrum, Kartika Hapsari; Hatmoko, Jati Utomo Dwi
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 25, Nomor 1 (2019)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (493.256 KB) | DOI: 10.14710/mkts.v25i1.19450

Abstract

To achieve the target of 100% drinking water service, Central Java Provincial Government holds regional water supply system (SPAM) programmes in Central Java, one of which is Keburejo regional water supply system (Kebumen and Purworejo). During the development phase, it was delayed due to project cost overrun, which later promotes an option for Public-Private Partnership (PPP). Consequently, this option may increase the project risks. This study aims to identify and analyze the risks of Keburejo regional water supply system project when the PPP option is chosen. This research adopted a mixed research method of qualitative and quantitative approach. Respondents in this study were 22 respondents from PDAB Tirta Utama, Dinas Bina Marga and Cipta Karya (BMCK) Central Java, Satker PSPAM Central Java, BBWS Serayu Opak, Pemkab (PDAM, Bappeda and DPU) Kebumen and Purworejo, as well as Business Entity (PT. TGM). The results found 24 risk factors, classified into pre-construction (10), construction (4), and Operational and Maintenance (10). The majority of these risks are considered ‘High’ (83.33%), with the highest risks in the pre-construction (37,5%), and the majority is under the Government responsibility (66.67%). These results are useful for Government as a reference in managing the risks of PPP SPAM Regional Keburejo and other regional SPAM projects in Indonesia.

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