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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.
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Articles 13 Documents
Search results for , issue "Volume 26, Nomor 1 (2020)" : 13 Documents clear
Kajian dan Evaluasi Struktur Slab Prestressed Precast Modular Concrete Eratodi, I Gusti Lanang Bagus; Awaludin, Ali; Han, Ay Lie; Triwiyono, Andreas
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 1 (2020)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5241.167 KB) | DOI: 10.14710/mkts.v26i1.27765

Abstract

Slab prestressed precast modular concrete berfungsi rigid pavement, mendukung beban kendaraan di atasnya pada tanah dasar yang daya dukungnya relatif rendah. Slab ini berukuran 2000 x 850 x 150 mm3 dari beton bertulang biasa (produksi lama) atau beton pretension (produksi baru) mutu beton K-500. Dalam pemakaian di lapangan slab ini diharapkan dapat dipasang dan dilepas berulangkali. Setelah beberapa kali pemakaian, terjadi kerusakan terutama pada bagian ujung slab berupa spalling. Tujuan kajian dan evaluasi struktur ini adalah: (1) mengamati kerusakan; (2) mendapatkan data kualitas bahan; (3) melakukan pemodelan secara numeris dengan memperhatikan sifat material, pembebanan dan kondisi tanah; dan (4) memberikan rekomendasi desain slab meliputi bahan dan geometrik. Metode kajian dan evaluasi kerusakan slab dilakukan pengamatan kerusakan, pengambilan core-case beton dan pengujiannya di laboratorium, serta pemodelan struktur slab dengan berbagai parameter (data tanah, mutu beton dan geometri slab). Hasil pengamatan di lapangan dan hasil analisis maka dapat diketahui bahwa spalling beton slab terjadi awalnya pada bagian tepi (sisi lebar 850 mm) yang selanjutnya menyebabkan efektifitas gaya pretension menjadi tidak optimal dan akhirnya volume spalling beton menjadi semakin bertambah. Selain karena frekuensi benturan saat pemasangan dan deformasi slab saat mendukung beban kendaraan. Permasalahan spalling beton juga dikarenakan mutu beton yang tidak sesuai. 
Pengaruh Perubahan Kondisi DAS terhadap Debit Sungai Studi Kasus DAS Waduk Jatigede Kodoatie, Robert Johannes
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 1 (2020)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1573.513 KB) | DOI: 10.14710/mkts.v26i1.28989

Abstract

Changes in land use in the upstream of Jatigede watershed cause discharge and sedimentation problems in the Jatigede Reservoir. The objective of this study is to analyse the affect of land use changes in the Jatigede Reservoir watershed to the inflow and sediment to the reservoir. SCS Curve Number method and HEC-HMS modeling system are used to discharge analysis. Flood discharges in the reach of Cimanuk River close to the reservoir using data of 2009 are Q2=1,751.5 m3/sec, Q5=2,280 m3/sec, Q25=3,064.5 m3/sec, Q50=3,589 m3/sec. Flood discharges in the reach of Cimanuk River close to the reservoir using data of 2018 are Q2=2,053.8 m3/sec, Q5= 2,616.7 m3/sec, Q25 = 3,439.2 m3/sec, Q50=3,984.9 m3/sec. Discharges increase in 10 years (based on 2009 data and 2018 data). For example discharge increment for Q25 is 375 m3/sec. The increment is due to the increment of CN number as the consequences of land use changes. In other words along with the time, flood discharge in the rainy season increases, however discharge in the drought season decreases.
Preferensi Perubahan Rute terhadap Informasi Kondisi Rute Mudik Hendrawan, Hendra
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 1 (2020)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (385.944 KB) | DOI: 10.14710/mkts.v26i1.25987

Abstract

Mudik merupakan kegiatan tahunan masyarakat di Indonesia yang dilakukan secara serentak dan dalam waktu yang singkat. Pemerintah telah melakukan berbagai upaya baik fisik atau non fisik untuk mengurangi dampak negatif yang ditimbulkan dari aktivitas mudik. Salah satu upaya yang dilakukan yaitu dengan memberikan informasi terkait kondisi rute mudik. Studi preferensi perubahan rute mudik setelah memperoleh informasi diperlukan untuk antisipasi dampak dari perbedaan keputusan tersebut. Metode yang digunakan dalam studi yaitu analisis dekriptif kuantitatif dan kualitatif serta menggunakan analisis statistik inferensia non parametrik dengan uji McNemar dan uji ChiSquare K sampel bebas untuk mengetahui adanya tidaknya perbedaan keputusan setelah pemberian informasi dan perbedaan preferensi perubahan rute berdasarkan faktornya. Hasil studi menunjukan bahwa faktor yang menyebabkan keputusan rute yang sama untuk pemudik yang rutin mudik dengan kendaraan pribadi yaitu rute paling cepat, dan tidak ada pilihan rute lain. Hasil analisis menunjukan bahwa untuk kedua faktor tersebut terdapat preferensi pemudik dengan persentase rata-rata untuk mengubah rute sebesar 68,5%, ragu-ragu sebesar 15%, dan tidak mengubah rute sebesar 16,5%. Studi ini juga menunjukan terdapat perbedaan keputusan setelah pemberian informasi, dan tidak ada perbedaan preferensi perubahan rute berdasarkan faktornya.
Penerapan Soft System Methodology pada Metode Penilaian Kerusakan Beton Secara Visual Wiyanto, Henny
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 1 (2020)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (755.713 KB) | DOI: 10.14710/mkts.v26i1.21371

Abstract

Concrete damage on buildings can be interpreted as the presence of a change in the physical state of concrete. Damage can be in the form of change on the concrete surface or loss of concrete quality. To be able to identify the concrete damage condition on a building, inspection and assessment is required. Visual assessment is a method that can be a good first step to identifying the concrete damage condition on a building structure. Visual assessment is limited to concrete surface that can be accessed with visual senses. The goal of the research is to develop the concrete damage assessment method on a building visually that can be accepted by construction industry users in Indonesia with the Soft System Methodology (SSM) approach. Application of the SSM approach in this research uses the Root Definition component, CATWOE analysis, Rich Picture, and Conceptual Model. Result that is obtained from research, is the development concept for a visual method of building damage assessment, based on the seven steps according to SSM. Research results are in the form of a method that can identify and assess concrete damage while determining the concrete damage level on a building visually. 
Identifikasi Risiko Lanjutan Terhadap Sumber dan Penyebab Material Waste Proyek Konstruksi Jalan Waty, Mega; Sulistio, Hendrik
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 1 (2020)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (720.347 KB) | DOI: 10.14710/mkts.v26i1.21817

Abstract

Early risk identification of the sources and causes of waste material for road construction projects has been carried out, and the research continues to carry out further risk identification which then becomes the final risk identification. Description and validity tests and reliability tests were carried out to obtain further risk identification. Each source variable and indicator of the cause of material waste in each material is differentfrom one another because each has a difference. The results of continued identification resulted in:   1) ready mix concrete has eight variables of waste material sources and 21 indicators of material waste causes, 2) lean concrete has seven variables of waste material sources and 18 indicators of material waste causes, 3) aggregate B has seven variables of waste material sources and 12 indicators of material waste causes,  4) landfill has eight variables of material waste sources and 26 indicators of material waste causes, 5) cement has seven variables of material waste sources and 31 indicators of material waste.
Pengaruh Substitusi Tanah Putih pada Mortar Geopolimer Berbahan Dasar Fly Ash dengan Aktifator Natrium Hidroksida Priastiwi, Yulita Arni; Hidayat, Arif; Daryanto, Dwi; Badru, Zidny Salamsyah
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 1 (2020)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (596.877 KB) | DOI: 10.14710/mkts.v26i1.24715

Abstract

The presence of white soil in a geopolymer mortar affects the physical and mechanical properties of the mortar itself, especially in compressive strength, density and modulus of elasticity produced. Geopolymer mortar composed of fly ash, sand, water, and NaOH which acts as an alkaline activator compared to mortar from the same material, but white soil from Kupang is added as a substitution of fly ash. Specimens are made in six variations. Geopolymer mortar composers using a ratio of 1 binder: 3 sand with w/b of 0.5. Binder composed of fly ash with white soil substitution of 0; 5; 10; 15; 20 and 30% by weight of fly ash. An activator NaOH 8M solution was added to the mixture. Both white soil and fly ash pass of sieve no. 200 with a moisture content of 0%. Mortar made measuring 5x5x5 cm. The mortar was treated by the oven of method at 60 oC for 24 hours until the mortar does not change in weight. The test results show geopolymer mortar with 15% substitution of white soil to fly ash has the highest compressive strength, density and modulus of elasticity among other variations. In all mortar variations, compressive strength at 14 days has reached 75% of strength at 28 days.
Analisis Pengisian Awal (Impounding) pada Bendungan Raknamo Dengan Model Tangki Krisnayanti, Denik S; Bolla, Margareth E; Bunganaen, Wilhelmus; Damayanti, Alvine C; Nait, Costandji; Amaral, Bilgardo E.D.N.R
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 1 (2020)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (782.897 KB) | DOI: 10.14710/mkts.v26i1.26757

Abstract

The impounding of the dam is the step that will be done after construction work on the dam be finished. This study aims to determine a long time and the volume of inflow on Raknamo dam in dry water year, low water year, normal water year and wet water year with tank model. Factors that affected the time of the first impounding of the dam is the amount of rainfall and evapotranspiration that has come in to the catchment area. The total volume of annual inflow Raknamo reservoir obtained in dry water year was in 15,489 million m3, low water year equal to 23,696 million m3, normal water year equal to 32,892 million m3 and wet water year equal to 44,068 million m3. In the calculation of the length of time filling the Raknamo reservoir used the volume of low water year. The accumulation of the volume of every month calculated so that length of time filling the Raknamo reservoir can reach the volume of planned at 14.091 million m3 within three a half months (three months fifteen days).
Analisis Kuat Tekan Beton Mutu Tinggi Pasca Bakar Menggunakan Serat Polypropylene Aulia, Teuku Budi; Muttaqin, Muttaqin; Afifuddin, Mochammad; Amalia, Zahra
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 1 (2020)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1043.615 KB) | DOI: 10.14710/mkts.v26i1.28262

Abstract

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.
Pengukuran Kinerja Supply Chain pada Konstruksi Gedung Bertingkat dengan Menggunakan Pendekatan Metode SCOR (Supply Chain Operations Reference) Fitrianto, Taufiq; Wibowo, Mochamad Agung; Hatmoko, Jati Utomo Dwi
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 1 (2020)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (970.749 KB) | DOI: 10.14710/mkts.v26i1.26064

Abstract

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
Penggunaan Metode AHP dan GIS Untuk Zonasi Daerah Rawan Banjir Rob di Wilayah Medan Utara Saputra, Novrizal Ardian; Tarigan, A. Perwira Mulia; Nusa, Ahmad Bima
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 26, Nomor 1 (2020)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1297.711 KB) | DOI: 10.14710/mkts.v26i1.26211

Abstract

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.

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