MEDIA KOMUNIKASI TEKNIK SIPIL
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.
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<![CDATA[Analisis Kuat Tekan Beton Mutu Tinggi Pasca Bakar Menggunakan Serat Polypropylene ]]>
<![CDATA[Aulia, Teuku Budi]]>;
<![CDATA[Muttaqin, Muttaqin]]>;
<![CDATA[Afifuddin, Mochammad]]>;
<![CDATA[Amalia, Zahra]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 1 (2020) ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v26i1.28262
<![CDATA[Beton mutu tinggi rentan terhadap suhu tinggi akibat densitas strukturnya yang tinggi. Penggunaan serat polypropylene dapat mencegah peledakan struktur dengan membentuk kanal-kanal akibat pelelehan serat saat kebakaran sehingga tegangan thermal keluar dari struktur beton. Penelitian ini bertujuan untuk mengetahui pengaruh penggunaan serat polypropylene terhadap kuat tekan beton mutu tinggi pasca bakar pada suhu 400ºC selama lima jam. Beton mutu tinggi dibuat dengan faktor air semen 0,3 dengan jumlah semen 550 kg/m3 yang ditambahkan silica fume 8% dan superplasticizer 4% dari berat semen dengan variasi serat polypropylene 0%, 0,2% dan 0,4% dari volume beton. Pengujian kuat tekan dilakukan pada silinder standar Ø15/30 cm yang dibakar dan tanpa bakar, diuji pada umur 7 dan 28 hari. Hasil penelitian menunjukkan bahwa beton mutu tinggi tanpa penggunaan serat polypropylene mengalami penurunan kuat tekan pada kondisi pasca bakar dibandingkan dengan beton tanpa bakar, yaitu 0,81% pada umur 7 hari dan 23,42% pada umur 28 hari. Sebaliknya, penambahan serat polypropylene dapat meningkatkan kuat tekan pasca bakar dengan persentase peningkatan maksimum terjadi pada penambahan 0,2% serat polypropylene yaitu 25,52% dan 10,44% pada umur 7 dan 28 hari. Dapat disimpulkan bahwa penggunaan serat polypropylene efektif untuk mencegah penurunan kuat tekan beton mutu tinggi yang dibakar pada suhu tinggi.]]>
<![CDATA[Pengukuran Kinerja Supply Chain pada Konstruksi Gedung Bertingkat dengan Menggunakan Pendekatan Metode SCOR (Supply Chain Operations Reference) ]]>
<![CDATA[Fitrianto, Taufiq]]>;
<![CDATA[Wibowo, Mochamad Agung]]>;
<![CDATA[Hatmoko, Jati Utomo Dwi]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 1 (2020) ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v26i1.26064
<![CDATA[Construction industry has a vital role in Indonesia’s economic growth. Infrastructure projects have been the priorities in the past five years consistent with RPJMN (National Medium Term Development Plan). It’s evident in the percentage of contribution of the construction industry, i.e. 10.2%, to Gross Domestic Product (PDB) and 6.34 million employments (5.3% national labors). However, it isn’t followed by efficiency of the construction industry. Increased cost, implementation, delay, conflict and dispute are some problems which arise from fragmentation and causes the construction industry to be known as an inefficient industry. A possible approach to solve fragment problem is studying the supply chain of the construction industry. The present study aimed to measure supply chain performance of construction using SCOR (supply chain) method, the impact and mitigation. The result was that the handling performed in TSM Bali project resulted in 5.56% of indirect waste, 8.63% of direct waste, and 443,711 tonCO2 of carbon footprint]]>
<![CDATA[Penggunaan Metode AHP dan GIS Untuk Zonasi Daerah Rawan Banjir Rob di Wilayah Medan Utara ]]>
<![CDATA[Saputra, Novrizal Ardian]]>;
<![CDATA[Tarigan, A. Perwira Mulia]]>;
<![CDATA[Nusa, Ahmad Bima]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 1 (2020) ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v26i1.26211
<![CDATA[Tidal floods that occur in the North Medan area due to overflowing of sea water when the tide enters the land, both directly and through river floods. The land area affected by tidal floods is getting wider and wider, so there needs to be an analysis of the level of vulnerability of tidal flooding so that the handling and prevention efforts can be on target. Determination of zonation with the level of tidal flood hazard involves various criteria, for this reason the AHP and GIS integration method is used to make rational decisions from several criteria and draw them on a zoning map. The results obtained in the North Medan area showed that 30.91 ha (0.33%) had very high levels, 1,515.98 ha (16.09%) had high levels, 4,411.92 ha (46.83%) had moderate levels, 3,176.83 ha (33.72%) had low levels, 284.81 ha (3.02%) had very low levels of vulnerability to tidal flooding.]]>
<![CDATA[Studi Karakteristik Campuran Tambalan Cepat Mantap (TCM) ]]>
<![CDATA[Thanaya, ME., PhD, I Nyoman Arya]]>;
<![CDATA[Jayantara, I Wayan Putra]]>;
<![CDATA[Purbanto, I Gusti Raka]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 1 (2020) ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v26i1.28446
<![CDATA[Patching road pothole can be done using Permanent Cold Patching (PCP). This research main aim was to analyze the characteristic of the PCP. PCP Super Cold Mix Asphalt was used for the experiment. The mixtures were compacted Marshall hummer in lab using, and plate compactor on site. It was obtained that: compaction temperature variation significantly affected the characteristic of the mixture. Compaction at 100°C and 150°C, met stability, porosity and VMA specification, but not for the VFB. It required more compaction energy. The stability of cold compacted mixture at the age of 1 hour gave 844.74 kg (min. 500 kg). Towards this value, at the age of 48 hours; 96 hours; 192 hours; 384 hours, respectively gave increase of stability of 102%; 140%; 183%; 187% and then constant. Cold compaction on site gave less performance with porosity values in a range of 4.585-8.22% (spec. 4% -10%), therefore the VFB is less than minimum 65% of VMA; the stability obtained was 1422.72 kg (>min 500kg) or 58% stability of the samples compacted in lab at the same 16 days of age where stability had become maximum (constant). Cantabro test result of the cold mix gave 100% weight loss (the sample disintegrated), meanwhile the hot mix only lost 7.56% from 16% max loss.]]>
<![CDATA[Kajian Parkir Badan Jalan pada Kawasan Perbelanjaan (Studi Kasus: Jalan Pemuda, Pecinan Magelang) ]]>
<![CDATA[Puspitasari, Evi]]>;
<![CDATA[Maryunani, Woro Partini]]>;
<![CDATA[Hutomo, Paska Adi]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 1 (2020) ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v26i1.23620
<![CDATA[The economic growth has influenced the mobility of the population. In line with those, there is a rapid growth of private vehicle ownership. The growth of private vehicles must be fulfilled by enough parking space so that it doesn’t cause parking problems later. This study aims to describe the conditions and evaluate the existing parking management in the case study area and design an effective parking space scenario. The object of this research is the on-street parking area on shopping area, Pemuda Street, Chinatown, Magelang. To obtain an overview of parking management in case study area, several surveys were conducted, including a parking inventory survey, occupancy survey, and parking duration survey. Secondary data collected by interview with the Local Transportation Department and the Local Public Works and Spatial Planning Department. The survey results show that existing parking requirements cannot be met by the existing parking area. However, the traffic conditions around the Chinatown have not shown congestion during peak hour. To further improve the effectiveness of parking management in Chinatown, parallel parking, parking meter implementation, the addition of parking space and the application of parking based on duration can be applied. For further research, research on parking using special transportation software can be done.]]>
<![CDATA[Effek Ukuran Butiran Maksimum terhadap Nilai Modulus of Rupture Reactive Powder Concrete ]]>
<![CDATA[Kushartomo, Widodo]]>;
<![CDATA[Linggasari, Dewi]]>;
<![CDATA[Sutandi, Arianti]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 1 (2020) ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v26i1.25088
<![CDATA[Modulus of rupture (R) is a measurement of a tensile strengh of a concrete beam. The value of R is affected by the size of fine aggregat grain, the density of the concrete beam and the water-cement ratio. The unit of R is MPa expressing the tensile strength of the concrete beam without reinforcement to withstand a buckling failure. The distance between the supports of the concrete beam should not be less than three times of the height of the beam. In this research the size of the concrete beam speciment was 100 mm x 100 mm x 350 mm, the maximum fine aggregate size was varied (300 µm, 425 µm, and 600 µm) and the water-cement ratio was also varied (0.25, 0.22 and 0,20). All speciments were cured by steam curing and were tested after seven days. The results show that the larger the size of the fine aggregat grain and the higher the water-cement ratio, the smaller the R.]]>
<![CDATA[Perbandingan Perkerasan kaku Pracetak dan Beton Konvensional dengan Menggunakan Analytical Hierarchy Process (AHP) ]]>
<![CDATA[Nuroji, Nuroji]]>;
<![CDATA[Setiadji, Bagus Hario]]>;
<![CDATA[Aktorina, Wahyu]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 2 (2020) ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v26i2.31792
<![CDATA[Perkerasan kaku pada banyak ruas jalan dianggap sebagai solusi dari beban lalu lintas yang terus meningkat yang menuntut kinerja dan durabilitas konstruksi jalan yang tinggi. Akan tetapi penggunaan perkerasan kaku membutuhkan waktu pelaksanaan yang lebih lama untuk mencapai kuat tekan betonnya sampai jalan dapat dioperasikan. Beberapa industri telah mengembangkan perkerasan dari panel beton pracetak untuk mereduksi waktu pelaksanaan. Makalah ini membahas tentang perbandingan penggunaan perkerasan kaku antara beton pracetak dan beton konvensional. Dua ruas jalan yaitu Jalan Margomulyo Surabaya yang menggunakan perkerasan beton pracetak dan Jalan Semarang – Jambu yang menggunakan perkerasan beton konvensional dipilih sebagai obyek penelitian. Biaya, waktu, kemampuan layanan dan kinerja lalu lintas adalah empat variabel yang ditinjau dalam penelitian ini yang dianalisis dengan menggunakan metoda Analytical Hierarchy Process (AHP) dengan mempertimbangkan 15 orang ahli yang kompeten sebagai responden. Berdasarkan analisis menunjukkan bahwa pada pekerjaan peningkatan jalan penggunaan perkerasan pracetak lebih efektif dan efisien dengan skor 58,42% sedangkan skor beton konvensional 41,58%.]]>
<![CDATA[Kajian Pelaksanaan Perbaikan Berkelanjutan Filosofi Kaizen pada Proyek Konstruksi di Indonesia ]]>
<![CDATA[Putri, Kartika Nur Rahma]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 2 (2020) ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v26i2.23069
<![CDATA[Kaizen as a quality management system offers a new approach to increase productivity by improving existing production processes without investing in new tools/procedures. This study aimed to determine the application of continuous improvement in construction projects according to kaizen philosophy. The research was conducted using descriptive analysis to describe the process of continuous improvement in a construction project. Data were collected using a questionnaire method on 24 building and road projects and interviews with two contractors. This study's results indicate that the application of the kaizen principle in construction projects is still limited. The research reveals that project planning has been carried out but not entirely following field conditions, standardization of work methods already exists but not detailed, all parties in the project have been involved in the construction process, but initiatives to make improvements have not been seen because it is still focused on corrective evaluation and work completion. The challenges in implementing continuous improvement are the lack of a quality management system, lack of working time, lack of consistency in the implementation of quality, and lack of worker’s skill in carrying out work. Some improvements required to support continuous improvement are to encourage top management's role in the application of quality management systems and internalization of the kaizen principle to all workers. The involvement of all production elements in maintaining product's quality in the internal system also needs to be improved.]]>
<![CDATA[Kajian Kesesuaian Rumus Intensitas Hujan dan Kurva Intensitas Durasi Frekuensi (IDF) di Wilayah Kampus Universitas Brawijaya, Malang ]]>
<![CDATA[Harisuseno, Donny]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 2 (2020) ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v26i2.31210
<![CDATA[Intensitas hujan merupakan variabel penting dalam proses transformasi hujan menjadi limpasan. Kejadian banjir tahun 2017 di lingkungan kampus Universitas Brawijaya diakibatkan intensitas hujan yang tinggi dan perubahan penggunaan lahan di lingkungan internal dan eksternal kampus. Studi ini bertujuan mengkaji kinerja beberapa rumus empiris dalam mengestimasi intensitas hujan, mengetahui pengaruh variasi kala ulang terhadap nilai konstanta pada rumus empiris, serta menentukan kurva Intensitas Durasi Frekuensi (IDF) yang sesuai. Rumus empiris yang digunakan meliputi Sherman, Talbot, dan Ishiguro, sedangkan intensitas hujan berbagai kala ulang (Tr) diestimasi dari analisis frekuensi Log Pearson Tipe III. Pemilihan rumus empiris yang sesuai dilakukan dengan membandingkan intensitas hujan empiris dengan pengamatan sesuai kriteria nilai kesalahan relatif (KR), Nash Sutcliffe Efficiency (NSE), dan Peak Weight Root Mean Square Error (PWRMSE). Rumus Sherman menunjukan kesesuaian yang baik dalam mengestimasi intensitas hujan dengan KR dan PWRMSE yang rendah serta nilai NSE mendekati satu. Nilai konstanta rumus empiris “a” berbanding lurus dengan Tr, sebaliknya konstanta “b” dan “n” menurun seiring meningkatnya Tr. Hasil validasi intensitas hujan terpilih (Sherman) dengan intensitas hujan pengamatan dari pendekatan hubungan peluang dan kala ulang menunjukkan bahwa rumus Sherman memiliki keandalan yang baik sehingga dapat digunakan untuk estimasi intensitas hujan dan kurva IDF di lokasi studi.]]>
<![CDATA[Analisis Aplikasi Kantong Lumpur pada Sungai Sebagai Upaya Pengendalian Sedimentasi Waduk ]]>
<![CDATA[Wulandari, Dyah Ari]]>;
<![CDATA[Ulfiana, Desyta]]>;
<![CDATA[Parmantoro, Priyo Nugroho]]>
<![CDATA[ MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 2 (2020) ]]>
Publisher : <![CDATA[Department of Civil Engineering, Diponegoro University ]]>
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DOI: 10.14710/mkts.v26i2.28691
<![CDATA[Reservoir sedimentation can be overcome by reducing the amount of sediment that enters the reservoir, by building check dam. The check dam has more deposited coarse sediment load than fine sediment load. Fine sediment that escapes the check dam will flow further and eventually enter the reservoir pond. Therefore it is necessary to build a building that can capture fine sediments. Construction is planned as a system of sediment trap in irrigation channels. The purpose of this study is to analyze the possibility of applying the sediment trap in the river to deposit sediments that escape the check dam. The analysis begins with the selection of the location of the sediment trap, then calculate the dimensions of the sediment trap and the amount of sediment that has settled. Based on the analysis of the selected dimensions with several combinations of gradation of sediment grains, sediment deposition that occurs ranges from 42 - 68%. So it can be concluded making the sediment trap in the river can be done. However, for the application of these sediment traps further research is needed regarding the dimensions of sediment traps that are most optimal for sediment deposition.]]>
