Claim Missing Document
Check
Articles

Found 9 Documents
Search
Journal : Jurnal Ilmiah Dinamika Rekayasa (DINAREK)

Pengaruh Penggunaan Calciumstearate Terhadapnilai Absorbsi Dan Arus Macrocel Pada Beton Bertulang Maryoto, Agus; Haryanto, Yanuar; Sudibyo, Gathot Heri
Dinamika Rekayasa Vol 6, No 2 (2010): Dinamika Rekayasa - Agustus 2010
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2010.6.2.34

Abstract

Bridge structure in the USA amounted to 577,000 units and as many as 134,000 units (23% of the total bridge) against damage caused by corrosion. This damage requires repairs at a cost not less than U.S.$ 90.9 billion. This damage is similar to the events in Indonesia. This research was performed by use of the calcium Stearate to neutralize reinforcement corrosion in reinforced concrete. Calcium Stearate will react with the cement hydration reaction during the process underway. The result of this reaction is physically looks like a candle. This compound would cover and fill the capillaries when water evaporates in the fresh concrete. This layer does not absorb and impermeable to water and corrosive compounds. So that these compounds caused corrosion of the reinforcement can not penetrate reinforced concrete. The ultimate goal of using calcium Stearate is to increase the service life of aging structures in corrosive areas such as building docks, bridges andrigid layer on the highway. The results showed that the use of calcium Stearate concrete with fly ash at 0% have a tendency of lowering the rate of corrosion of reinforcement and inhibit corrosion. Calcium Stearate with a dose of 2 kg per m3 of concrete can decrease makrocell value amounting to 67%. While on the concrete with fly ash 40%, the addition of 2 kg of calcium Stearate cause makrocell value decreased by 85%.
Kuat Tekan Dan Kuat Tarik Belah Sebagai Nilai Estimasi Kekuatan Sisa Pada Beton Serat Kasa Aluminiumakibat Variasi Suhu Wariyatno, Nanang Gunawan; Haryanto, Yanuar
Dinamika Rekayasa Vol 9, No 1 (2013): Dinamika Rekayasa - Februari 2013
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2013.9.1.98

Abstract

This study was aimed to determine influence of temperature variation to the compressive strength and split cylinder strength of aluminium wire-mesh fibre concrete. Specimen was concrete cylinder with 15 cm in diameter and 30 cm in high, and the volume fraction of aluminium wire-mesh fibre was specified equal to 0.2%. Temperature variations applied in this research were 25oC (room temperature), 400oC and 800oC. The result showed that increasing of temperature had caused compressive strength reduction.Compressive strength at temperature 400oC and 800oC for both normal concrete and wire-mesh fibre concrete were equal to 22.04%, 39.21%, 21.68% and 45.81%. Split cylinder test at temperature 400oC and 800oC for both normal concrete and wire-mesh fibre concrete showed reduction which were equal to 20.36%, 51.27%, 21.98% and 56.30%. On the other hand modulus of elasticity reduction at temperature 400oC and 800oC for both normal concrete and wire-mesh fibre concrete were 2.20%, 65.22%, 6.79% and 61.33%, where all of tests werecompared to normal concrete and wire-mesh fibre concrete at room temperature (25oC).
Abu Terbang (Fly Ash) Sebagai Bahan Tambah Untuk Meningkatkan Kuat Tekan Bata Beton (Paving Block) Gathot Heri Sudibyo; Yanuar Haryanto; Fatkhurrozak Fatkhurrozak
Dinamika Rekayasa Vol 4, No 2 (2008): Dinamika Rekayasa - Agustus 2008
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2008.4.2.115

Abstract

This research was aimed to know the influence of fly ash addition at paving block stress strength. Variation of fly ash was 0%, 20%, 40%, 60%, and 80% from weight of cement with water cement ratio 0,25. The speciment was hexagonal and cube with the comparison 1 cement : 6 sand. The result showed that the stress strength of hexagonal paving block at 56 days with fly ash 20%, 40%, 60% and 80% was increase to 37,166% (7,057 MPa), 18,248% (3,465 MPa), 8.110% (1,54 MPa), and 14,193% (2,695 MPa). The cubic paving block at 56 days with fly ash 20%, 40%, 60% and 80% was increase to 35,932% (5,969 MPa),15,135% (2,514 MPa), 9,534% (1,584 MPa), and 8,318% (1,382 MPa).
Kajian Ketahanan Kejut Beton Ringan Serat Alumunium Dengan Agregat Alwa Yanuar Haryanto
Dinamika Rekayasa Vol 2, No 1 (2006): Dinamika Rekayasa - Februari 2006
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2006.2.1.14

Abstract

This research was aimed to know the addition of alumunium fiber influence to the impact resistance of lightweight concrete. In this research, lightweight concrete was made from cement, water, sand, ALWA (Artificial Lightweight Aggregate) and Superplasticizer, mix design method was Dreux-Corrise Method. The speciment was plate with 20 cm diameter and 4 cm high. Variation of alumunium fiber addition was 0%, 0,35%, 0,75% and 1% cement weight. The test was done after 28 days age of speciment. The result showed that the most significant increasing of impact resistance was obtained on 0,75% alumunium fiber addition, which was 250% for first crack and 300% for failure
Evaluasi Kinerja Gedung Dinas Kependudukan Dan Catatan Sipil Purbalingga Dengan Analisis Pushover Arnie Widyaningrum; Yanuar Haryanto
Dinamika Rekayasa Vol 15, No 2 (2019): Jurnal Ilmiah Dinamika Rekayasa - Agustus 2019
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2019.15.2.240

Abstract

Dalam rangka meningkatkan pelayanan bidang kependudukan, kabupaten Purbalingga membangun gedung baru Dinas Kependudukan dan Catatan Sipil. Dengan fungsi sebagai perkantoran, gedung dua lantai ini termasuk bangunan dengan kategori resiko II yang menurut peraturan harus memiliki level kinerja minimal LS (Life Safety) untuk kala ulang gempa 500 tahun. Kajian ini bertujuan untuk menentukan kinerja gedung Dinas Kependudukan dan Catatan Sipil kabupaten Purbalingga. Kajian dilakukan menggunakan analisis pushover yang merupakan teknik yang populer oleh karena kemudahaanya, yang banyak digunakan untuk mengevaluasi baik bangunan baru maupun lama. Hasil kajian menunjukkan pada saat tercapai titik kinerja, diperoleh gaya geser dasar sebesar 609510,9 kg dan 687598,1 kg masing-masing pada sumbu X dan sumbu Y. Rasio simpangan yang terjadi masing-masing adalah 0,71% pada sumbu X dan 0,85% pada sumbu Y. Nilai keduanya kurang dari 1% yang menandakan bahwa kinerja struktur gedung Dinas Kependudukan dan Catatan Sipil kabupaten Purbalingga ini berada pada level IO (Immediate Occupancy) dimana tidak terdapat kerusakan yang berarti pada struktur, kekuatan dan kekakuannya kira-kira hampir sama dengan kondisi sebelum gempa. Komponen nonstruktur masih berada ditempatnya dan sebagian besar masih berfungsi jika utilitasnya tersedia. Gedung dapat tetap berfungsi dan tidak terganggu dengan masalah perbaikan. Dapat disimpulkan bahwa perancangan gedung Dinas Kependudukan dan Catatan Sipil kabupaten Purbalingga telah memenuhi kaidah kegempaan
Pengaruh Panjang Penyaluran Sambungan Terhadap Kekuatan Balok Beton Pracetak Tulangan Bambu Nanang Gunawan Wariyatno; Yanuar Haryanto; Gathot Heri Sudibyo
Dinamika Rekayasa Vol 11, No 1 (2015): Jurnal Ilmiah Dinamika Rekayasa - Februari 2015
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2015.11.1.94

Abstract

Kajian ini bertujuan untuk mengetahui pengaruh panjang penyaluran sambungan terhadap kekuatan balok beton pracetak tulangan bambu. Kajian dilakukan terhadap 6 tipe benda uji, masing-masing balok tulangan baja, balok tulangan bambu, balok pracetak penyaluran 5 cm, balok pracetak penyaluran 7 cm, balok pracetak penyaluran 9 cm, dan balok pracetak penyaluran 9 cm tanpa diangkur. Benda uji memiliki dimensi 120 mm x 150 mm x 600 mm dengan masing-masing tipe dibuat sejumlah 3 buah, dan pengujian dilakukan dengan pembebanan dua titik. Hasil kajian memperlihatkan bahwa kekuatan balok tulangan bambu memiliki rasio 0,53 terhadap kekuatan balok tulangan baja. Panjang penyaluran sambungan yang menghasilkan kekuatan tertinggi pada balok pracetak adalah 7 cm dengan rasio 0,21. Pengangkuran menghasilkan peningkatan kekuatan sebesar 47,20% pada balok pracetak dengan panjang penyaluran sambungan 9 cm. Keruntuhan balok pracetak terjadi pada sambungan.
Efektifitas Wire Rope Sebagai Perkuatan padaDaerah Momen Negatif Balok Beton Bertulang Tampang T Yanuar Haryanto
Dinamika Rekayasa Vol 7, No 2 (2011): Dinamika Rekayasa - Agustus 2011
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2011.7.2.47

Abstract

The loss due to collapsing structure includes not only materialsbutalso take lives. In thecase of structure function changing that may cause increasing loads, it is required to put efforts instrengtheningthe structure elements in order to increase the capacity and hence to avoid the possibility of collapsing. The objective of this research was to study thebehavior of T-sectional reinforced concrete beamstrengthenedin the negative momentregionwithwire rope and mortar composite. The test was carried out to three T-sectional beams: without wire rope reinforcement (BK), with 2 wire rope reinforcements (BP1), and with 4 wirerope (BP2) reinforcements. The type of wire rope was Independent Wire Rope Core (IWRC) with10 mm diameter. The testing method used was two points static loading with flens positions below (the flens part experienced tensile stress). Results showed that the maximum load carryingcapacity of BP1 and BP2 specimens increased by ratios of 1.59 and 2.03 to the BK specimen respectively. However, the increase was achievedafter the development and propagation of highcracking. Ductility of BP1 and BP2 specimens decreased by ratios of 0.62 and 0.36 to the BK specimen respectively. The initial stiffness of BP1 and BP2 increased byratios of 1.09 and 1.08 to the BK specimen respectively.The effective stiffness ofBP1 and BP2 specimensdecreased by ratios of 0.88 and 0.92 to the BK specimenrespectively. Stress occurred in the wire rope based on the analysis results of Response-2000 and the layer method have not reached 50% ofthe ultimate stress resulted from the preliminary test. In general, unless improvement was given to the stiffness characteristics of thewire rope, its contribution would not become optimum.
Kinerja Model Struktur Gedung Lima Lantai Pada Kondisi Tanah Keras Di Wilayah Banyumas Akibat Beban Gempa SNI 03-1726-2002 Dan SNI 03-1726-2012 Yanuar Haryanto; Gathot Heri Sudibyo; Nanang Gunawan Mariyatno
Dinamika Rekayasa Vol 11, No 2 (2015): Jurnal Ilmiah Dinamika Rekayasa - Agustus 2015
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2015.11.2.77

Abstract

Indonesia menempati posisi ketiga dunia dari 153 negara yang memiliki potensi bahaya gempa. Hal ini disebabkan Indonesia merupakan tempat bertemunya tiga lempeng besar dunia yaitu Lempeng Indo-Australia, Lempeng Eurasia, dan Lempeng Pasifik. Interaksi antara ketiga lempeng inilah yang menyebabkan Indonesia memiliki aktivitas kegunungapian dan kegempaan yang tinggi. Perubahan peraturan gempa Indonesia berpeluang menyebabkan terjadinya perubahan kinerja struktur gedung. Makalah ini bertujuan untuk mengkaji kinerja model struktur gedung lima lantai pada kondisi tanah keras di wilayah Banyumas akibat beban gempa SNI 03-1726-2002 dan SNI 03-1726-2012, yang dilakukan dengan analisis beban dorong (pushover). Hasil kajian menunjukkan bahwa terjadi peningkatan gaya geser dasar sebesar 1,48% pada model struktur gedung saat tercapai titik kinerja (performance point). Displacement yang terjadi mengalami peningkatan sebesar 19,61% sedangkan daktilitas mengalami penurunan sebesar 43,14%. Kinerja model struktur gedung tidak mengalami perubahan yaitu tetap pada level Immediate Occupancy dimana tidak terdapat kerusakan yang berarti pada struktur, kekuatan dan kekakuannya kira-kira hampir sama dengan kondisi sebelum gempa. Komponen nonstruktur masih berada ditempatnya dan sebagian besar masih berfungsi jika utilitasnya tersedia. Gedung dapat tetap berfungsi dan tidak terganggu dengan masalah perbaikan.
IDENTIFIKASI LOKASI STRATEGIS UNTUK KAWASAN INDUSTRI DI KABUPATEN PURBALINGGA Probo Hardini; Yanto Yanto; Yanuar Haryanto
Dinamika Rekayasa Vol 3, No 2 (2007): Dinamika Rekayasa - Agustus 2007
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2007.3.2.112

Abstract

To reach the regional development equity, it is necessary to spread central activities in sub-region. This is a land use planning need to gain. According to development paradigms, industry is a leading sector that will influence its hinterland. This research was aims to know the strategic location for industrial area in Purbalingga, that have consideration in phisichal, economic, social, and stakeholders’ interest. The result indicate that industry should not located in central region as we saw in existing. The best alternative location for industrial area are Bukateja, Kutasari, Rembang, Mrebet, Karangreja , and Karangmoncol.