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PENGARUH VARIASI KONSENTRASI LARUTAN NANOPARTIKEL PERAK SEBAGAI BAHAN ADITIF DALAM BATAKO TERHADAP POROSITAS DAN KUAT TEKAN BATAKO EFFECT OF VARIOUS OF CONCENTRATION OF SILVER NANOPARTICLES SOLUTIONS AS ADDITIVE MATERIALS IN CONCRETE BRICK ON ITS POROSITY AND COMPRESSIVE STRENGTH Nur Dwi Lestari Nur Dwi Lestari; W.S. Brams D W.S. Brams D; Dian Eksana Wibowo Dian Eksana Wibowo
Jurnal Ilmu Fisika dan Terapannya (JIFTA) Vol 5, No 3 (2016): Jurnal Fisika
Publisher : Prodi Fisika, Departemen Pendidikan Fisika

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

AbstrakPenelitian ini bertujuan untuk mengetahui pengaruh variasi konsentrasi nanopartikel perak,yang ditambahkan pada batako terhadap porositas dan kuat tekan. mengetahui kualitas batakoberdasarkan porositas dan kuat tekan. Langkah pertama dari penelitian ini adalah persiapannanopartikel perak. Nanopartikel perak telah disintesis dengan konsentrasi 1, 2, 3, 4, dan 5 mM.Adanya nanopartikel perak ditentukan dengan menggunakan spektrofotometer Ultraviolet-Visible.Langkah selanjutnya larutan nanopartikel perak yang diperoleh dari langkah pertama ditambahkan kedalam campuran semen dan pasir. Campuran kemudian dicetak dengan ukuran (5x5x5) cm3 dandirendam selama 14 hari. Pada hari terakhir, batako diuji porositas, kuat tekan, dan strukturnyadengan X-ray Diffractometer. Data eksperimen menunjukkan bahwa adanya nanopartikel perak padabatako berpengaruh pada porositas dan kuat tekan. Porositas batako menurun dengan meningkatkandari nanopartikel perak, sedangkan kuat tekan meningkat. Dapat disimpulkan bahwa kualitas batakoditingkatkan karena adanya nanopartikel perak.Kata kunci: nanopartikel perak, batako, kuat tekan, porositasAbstractThis study is aimed to determine the effect of various concentration of silver nanoparticles,which were added in concrete brick on its porosity and compressive strength. Based on its porosityand compressive strength, the quality of concrete bricks was evaluated. The first step of this studywas preparation of silver nanoparticle. The silver nanoparticles has been synthesized withconcentration of 1, 2, 3, 4, and 5 mM. The next step silver nanoparticle in aqueous solution, whichwas obtained from first step was added into a mixture of cement and sand. The mixture then printed in(5x5x5) cm3 in size and soaked for 14 days. At final day, the concrete bricks was characterized itsporosity, compressive strength and its structure by X-ray Diffractometry. Experimental data shownthat the presence of silver nanoparticle on concrete brick affected on its porosity and compressivestrength. The porosity of concrete brick decreased by increasing of a mount of silver nanoparticle,while the compressive strength increased. It could be concluded that the quality of concrete brick wasenhanced due to the presence of silver nanoparticle.Keywords: silver nanoparticles, concrete brick, compressive strength, porosity.
Pengembangan Video Pembelajaran Pengujian Sondir Tanah untuk Mahasiswa Program Studi Pendidikan Teknik Sipil dan Perencanaan Wijaya, Estu Panduaji; Wibowo, Dian Eksana; Malik, Abdul
Jurnal Pendidikan Teknik Bangunan Vol 4, No 1 (2024): Jurnal Pendidikan Teknik Bangunan
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/jptb.v4i1.67109

Abstract

Kesuksesan hasil pembangunan infrastruktur tergantung pada kematangan perencanaan, khususnya analisis geoteknik lapisan tanah lokasi pembangunan. Kenyataannya, ada yang tidak tahu analisis geoteknik atau ada yang tahu tetapi mengabaikannya. Tujuan penelitian ini untuk menganalisis uraian hasil tahap pengembangan video pembelajaran pada pengujian sondir tanah mata kuliah Survei dan Penyelidikan Geoteknik mahasiswa PTSP UNY. Pengembangan video pembelajaran ini menggunakan metode penelitian Research and Development (RD) dengan model tahapan 4D (Four-D). Teknik pengumpulan data penelitian menggunakan angket dengan klasifikasi skor skala Likert dengan rentang nilai 1-5. Analisis data menggunakan teknik analisis deskriptif kuantitatif. Hasil penelitian pengembangan adalah melalui tahap : (1) Pendefinisian (define) ditemukan urgensi kebutuhan media video pembelajaran pengujian sondir tanah untuk membantu proses pembelajaran. (2) Perancangan (design) diperoleh proses persiapan video, proses pelaksanaan, dan produk akhir berupa video pembelajaran berformat *.mp4 kualitas 1080P, berdurasi 26 menit 33 detik, dan berukuran 1,97 GB. (3) Pengembangan (develop), didapatkan kelayakan pengembangan media video pembelajaran oleh ahli materi dengan skor kelayakan 4,82 persentase 98,79% dengan kategori "Sangat Layak", ahli media dengan skor 4,95 persentase 99,05% dengan kategori "Sangat Layak", dan penilaian pengguna dengan skor 4,45 persentase 89,07% dengan kategori "Sangat Layak". (4) Penyebarluasan (disseminate), produk video pembelajaran dikemas dalam bentuk segmen berformat *pptx dengan ukuran 150 MB, didistribusikan menggunakan flashdisk untuk dosen pengampu mata kuliah, diunggah pada platform YouTube untuk video, One Drive dan Google Drive untuk produk video segmen dalam bentuk powerpoint dan disebarluaskan secara online melalui tautan kepada pengguna. Saran untuk peneliti selanjutnya adalah memperbarui dan meningkatkan kualitas materi dan gambar video pembelajaran.
Increasing Unconfined Compressive Strength of Soft Clay Stabilized with Coir Fiber and Bagasse Ash Mix Widianti, Anita; Sundi, Svastika Ariana; Rahmawati, Anita; Wibowo, Dian Eksana
UKaRsT Vol. 8 No. 1 (2024): APRIL
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/ukarst.v8i1.5548

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Increasing coir fiber and bagasse ash waste can cause environmental degradation. Utilization of this waste in construction work is still rarely done. Coir fiber is a natural material with the highest coefficient of friction and tensile strength. Bagasse ash has a high silica content and is suitable for use as pozzolan. Soil stabilization with a combination of both is expected to improve the geotechnical properties of soft soil. This research aims to analyze the unconfined compressive strength (UCS) and secant modulus of soft clay stabilized with coir fiber-bagasse ash mix. Coir fiber as much as 0.75% and ash with varying contents: 0%, 2%, 4%, 6%, 8%, and 10% of the total weight of the mixture. The specimens were cured for 28 days. UCS tests were conducted according to ASTM D2166-16 with the axial stress and strain relationship curve results to determine the UCS and secant modulus. The results showed that the UCS value and secant modulus value increased along with increasing bagasse ash content. The maximum value was achieved at 8% ash variation with a UCS value of 472.45 kPa (an increase of 382% from a soil-coir fiber mix) and a secant modulus value of 21.94 MPa (an increase of 571% from a mixture of soil and coir fiber). The research results show that this mixed soil is classified as hard soil, which can withstand high loads. It is hoped that the results of this research can become a reference for stabilizing soft soil in the field.
Electrical Resistivity Tomography as a Geotechnical Justification Support (Case Study Makassar – Pare-Pare Railway Bed Construction KM 68+450 to KM 68+750) Sasmayaputra, Nur Alfian; Wibowo, Dian Eksana; Fajarwati, Yuli; Endaryanta, Endaryanta; Aswad, Sabrianto; Widiastuti, Nur Oktaviani
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 20 No. 2 (2024): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v20i2.77380

Abstract

This study examined the presence of underground water channels under the Makassar - Pare-pare railway line KM 68+450 – KM 68+750 and the design concept for the technical solution. The potential for underground water channels was identified during construction, based on community information, the location's morphological phenomena, and  geological conditions whose base rock was the limestone formation. The problems can cause instability of the railway line, resulting in unsafe train travel. One of the characteristics of limestone rock conditions is its hollow shape, like a cave that can become underground water flow. It was a case study whose solution was based on data obtained from geotechnical investigations. Boring testing can only provide information on soil layers at the test point and cannot describe soil stratigraphy section, including underground water channel.  Combination  ERT and Boring tests were carried out to examine the presence of underground water channels. This study was conducted in three stages: initial identification, advanced identification, and design concept of Technical Solution. In these three stages, data collection and analysis were carried out. The results of the study indicated that ERT tests could provide a picture of the subsurface to shallow bedrock, thus facilitating the justification of geotechnical design. From the analysis, it was concluded that no channel cavities, such as caves, that function as underground water channels. The existing water flow was estimated to be a confining aquifer where water flows due to the height difference in the surrounding morphological conditions through the media of the broken limestone water shaft. It was confirmed with the results of Boring and ERT tests. The proposed technical solution concept was strengthening the Dolken embankment structure and geogrid, combined with a subdrain layer. The technical solution was prepared based on the results of research on construction contract data and project resource readiness.
Evaluasi Risiko Likuifaksi pada Infrastruktur Vital di Kabupaten Bantul Berdasarkan Data Cone Penetration Test (CPT) Yuli Fajarwati; Febriana Arum Dewi; Dian Eksana Wibowo
MEDIA KONSTRUKSI Vol. 9 No. 3 (2024)
Publisher : Jurusan Teknik Sipil, Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33772/medkons.v9i3.61

Abstract

Penelitian ini bertujuan untuk mengevaluasi potensi likuefaksi di Kabupaten Bantul, Daerah Istimewa Yogyakarta (DIY). Analisis dilakukan dengan menghitung nilai Factor of Safety (FS) dan Liquefaction Potential Index (LPI) berdasarkan metode Robertson dan Write (1998) yang diperbarui oleh Robertson (2009). Data diperoleh melalui pengujian Cone Penetration Test (CPT) di lima lokasi strategis yang dipilih berdasarkan keberadaan infrastruktur vital. Hasil penelitian menunjukkan variasi tingkat risiko likuefaksi pada lokasi pengujian. Zona risiko Sangat Tinggi ditemukan di CPT-01 (LPI: 40), CPT-03 (LPI: 24), dan CPT-05 (LPI: 17), dengan kedalaman lapisan rentan hingga 7,20 meter. Zona risiko Tinggi terdeteksi di CPT-02 (LPI: 15), dengan kedalaman lapisan rentan hingga 2,60 meter. Sementara itu, zona risiko Rendah teridentifikasi di CPT-04 (LPI: 5), dengan lapisan rentan terbatas pada kedalaman 0,20 hingga 0,80 meter.
Pengembangan E-Book dalam Mata Kuliah Manajemen Kontruksi pada Program Studi Teknik Sipil S1 Departemen Pendidikan Teknik Sipil dan Perencanaan Universitas Negeri Yogyakarta Fauzie, Makhin; Wibowo, Dian Eksana
Jurnal Pendidikan Teknik Bangunan Vol 4, No 2 (2024): Jurnal Pendidikan Teknik Bangunan
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/jptb.v4i2.76473

Abstract

Penelitian ini bertujuan untuk: (1) Menganalisis berbagai referensi guna mendukung pengembangan materi pembelajaran pada mata kuliah Manajemen Konstruksi, dengan fokus pada menemukan sumber yang relevan dan berkualitas; (2) Merencanakan serta mengaplikasikan modul pembelajaran yang komunikatif dan sesuai kebutuhan peserta didik, dengan menciptakan modul yang menarik, mudah dipahami, dan memadukan berbagai jenis media; (3) Meningkatkan aksesibilitas dan keterampilan penggunaan teknologi bagi peserta didik, serta mengatasi hambatan- hambatan yang mungkin muncul, termasuk pelatihan teknologi dan penyediaan akses yang mudah. Penelitian ini merupakan jenis research and development dengan subjek mahasiswa Teknik Sipil S1 Fakultas Teknik Universitas Negeri Yogyakarta. Melalui metode survei menggunakan angket, penelitian ini memperoleh data tentang kemudahan penggunaan E-book lalu diolah menggunakan teknik analisis data deskriptif kualitatif. Sampel yang diambil sebagai responden sebanyak 30 mahasiswa dan 2 validator dengan menggunakan teknik instrument dan kuisioner. Hasil penelitiannya adalah untuk skor dari validator media 93%, validator materi 80%, dan pengguna 92%
RIVER CLIFF REINFORCEMENT EFFORTS BY APPLICATION OF COMBINATION OF DAM STONE, GABION, TETRAPOD, AND BAMBOO FLOW ALIGNER Dian Eksana Wibowo; Didik Purwantoro; Satoto Endar Nayono; Indra Bayu Wardhana; Yoga Bayu Prabowo
Journal of Green Science and Technology Vol 4 No 1 (2020): Journal of Green Science and Technology, Vol.4 No.1 (2020)
Publisher : Faculty of Engineering, Universitas Swadaya Gunung Jati

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33603/jgst.v4i1.3152

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The purpose of research : (1) determine the ratio between the combination of retrofitting tetrapod-bamboo alignment-tetrapod   (FP1); bamboo flow aligner-tetrapod-bamboo flow aligner (FP2); Check Dam Stones-Gabion-Check Dam Stones (FP3); Gabion-Check Dam Stones-Gabion (FP4)? (2) The effectiveness of the combination of strengthening the tetrapod-bamboo aligner-tetrapod   (FP1); bamboo flow aligner-tetrapod-bamboo flow aligner (FP2); Check Dam Stones-Gabion-Check Dam Stones (FP3); Gabion-Check Dam Stones-Gabion (FP4)?Using the experimental method by creating a Labolatorium scale river model. Testing using clay and sand. The test model is a cliff without reinforcement and cliff with a combination of reinforcement between tetrapods; bamboo flow aligner; check Dam stones and Gabions. Testing by flowing water for 180 minutes/3 hours with a constant discharge of 7.07 liters/second, the installation of reinforcement is 51 cm apart.The results showed that (1) In general, the effect of the FP1 reinforcement installation was the variation of the combination that was considered the best in reducing scouring on the cliffs and riverbeds. (2) Variation of the combination of FP1, is more effective in reducing the scouring that occurs. At the beginning of the channel turns from STA 00-06 effectively used tetrapod installation, with scours that occur as big as -5 cm, in the middle of the STA channel 06-16 effectively using the installation of bamboo flow aligner, scours that occur as much as -1.5 cm, whereas at At the end of the turn, STA 17-24 used tetrapod installation, scouring by -3.8cm.Keyword: scouring, bamboo flow aligner, tetrapod.
PENGARUH PENGGUNAAN KOLOM PASIR, LAYER PASIR, DAN TERUCUK BAMBU PADA TANAH LEMPUNG JENUH AIR TERHADAP PENURUNAN TANAH LEMPUNG MENGGUNAKAN UJI LABORATORIUM Wibowo, Dian Eksana; S., Satriarda Dirgantara; Kurniawan, Ridwan
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 16, No 1 (2020): Mei
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (344.842 KB) | DOI: 10.21831/inersia.v16i1.31316

Abstract

ABSTRAKPenelitian ini bertujuan untuk mengetahui klasifikasi jenis tanah, properti tanah pengujian dan pengaruh penggunaan metode penambahan variasi tanah lempung jenuh air dengan menggunakan pasir dan cerucuk bambu, terhadap penurunan tanah lempung, kadar air, dan analisis T90. Penelitian eksperimen dengan menggunakan model boks baja, berukuran 100 cm x 100 cm x 40 cm sebagai media penempatan tanah lempung. Hasil penelitian ini yaitu: (1) Jenis tanah termasuk CH (Clay High Plasticity) menurut klasifikasi USCS dan kelompok 4-7-6(40) menurut klasifikasi AASTHO. (2) Properti tanah adalah G=2,63, LL=74,71%, PL=29,76%, IP=44,95%, SL=19,06%, C=0,75 kg/cm2, OMC=39,2%. (3)  Penambahan TPV sangat efektif memperkecil penurunan. Pada pemberian tekanan 0,0125 kg/cm2, 0,025 kg/cm2, 0,05 kg/cm2, dan 0,01 kg/cm2 memperkecil penurunan, berturut-turut: 75,93%; 56,32%; 59,44% dan 42,32%. Pada kedalaman -10 cm penggunaan TPH paling efektif mengurangi kadar air tanah lempung  yaitu sebesar 53,30%, berarti mengurangi kadar air sebesar 3,62% dari kondisi tanah asli (TTD). Pada kedalaman 20 cm, penggunaan TCB paling efektif mengurangi kadar air sebesar 3,55% dari kadar air tanah lempung asli (TTD). Penggunaan CTPVH pada beban 0,1 kg/cm2 paling efektif dalam proses konsolidasi yaitu sebesar 94,10% dari tanah asli (TTD) dimana mempunyai nilai sebesar nilai t90 untuk CTPVH yaitu sebesar 15,21 menit. Kata Kunci: air, perkuatan, tanah lempung, T90  ABSTRACT This study aims to determine the classification of soil types, soil properties tested and the effect of using the method of adding variations in the water-saturated clay, using sand and bamboo piles, to clay settlement, moisture content, and T90 analysis. The experimental study used a steel box model, measuring 100 cm x 100 cm x 40 cm as a medium for clay placement. The results of this study are: (1) Soil types including CH (Clay High Plasticity) according to USCS classification and groups 4-7-6 (40) according to AASTHO classification. (2) Soil properties is G=2,63, LL=74,71%, PL=29,76%, IP=44,95%, SL=19,06%, C=0,75 kg/cm2, OMC=39,2%. (3) Addition of TPV is very effective in reducing the settlement. At a pressure of 0,0125 kg/cm2, 0,025 kg/cm2, 0,05 kg/cm2, and 0.01 kg/cm2 minimizing the settlement,  respectively: 75,93%; 56,32%; 59,44% and 42,32%. At depths of -10 cm the most effective use of TPH reduces clay soil moisture content by 53,30%, which means reducing water content by 3,62% from the original soil conditions (TTD). At a depth of 20 cm, using TCB is most effective at reducing water content by 3,55% from the original clay soil content (TTD). The use of CTPVH at a load of 0,1 kg/cm2 is most effective in the consolidation process which is 94.10% of the original soil (TTD) which has a value of T90 for CTPVH which is 15,21 minutes. Keywors: water, strainthening, clay, T90
Evaluation and Redesign Based on Highway Geometric Design Guidelines 2021 (Case Study of Sampakan–Singosaren Road KM 13.8, Bantul Regency) Wibowo, Dian Eksana; Putra, Yoga Pratama; Ma'arif, Faqih
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 18 No. 2 (2022): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v18i2.54664

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This study aims to : (1) evaluate the geometric design of the Sampakan–Singosaren street km 13,8 Bantul Regency based on Panduan Desain Geometrik Jalan Bina Marga 2021; (2) identify the factor considered as evaluation, (3) propose alternative design and (4) to evaluate the differences between existing geometric design and alternative geometric design. The study used trial-and-error modeling for existing, and alternative geometric using Auto cad Civil 3D Student Version and analyzed according to Bina Marga standard. Then, a comparison of the existing and alternative geometric designs is calculated based on Bina Marga Geometric Design Standard 2021. The result indicates of study that there are 2 (two) existing curves with (1) each radius range at 37 m and 30 m, respectively; (2) the horizontal sight line offset on the first curve and the second curve was 4,7 m and 0.7 m, and the driving speed of 40 km/h. Furthermore, there is some parameter that does not meet the requirements, so an alternative design is required to fulfill the requirements of Bina Marga Geometric Design Standard 2021; (3) The designed shift on the new track to ± 9 m east and ± 5 m south; (4) the radius in both curve (S-C-S) is about 44 m, (5) horizontal sight line offset on the first curve and the second curve was 8,38 m and 7,557 m. Some changes to the existing and alternative design are the larger radius, the lower super elevation, new track is more flexible, and the better JPH and horizontal sight line offset.
Pengembangan Modul Pembelajaran Mata Kuliah Praktik Kerja Plambing dan Sanitasi di Prodi Pendidikan Teknik Sipil dan Perencanaan FT UNY Syamsudin, Rudi Nur; Hidayat, Nur; Prihadi, Wisnu Rachmad; Malik, Abdul; Wibowo, Dian Eksana
Jurnal Pendidikan Teknik Sipil Vol. 4 No. 1 (2022): Juni
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jpts.v4i1.49374

Abstract

ABSTRACT This study aims to: (1) understand and carry out the stages of preparing the learning module for the plumbing and sanitation work practice course; (2) determine the feasibility level of the learning module for the plumbing and sanitation work practice course. This study uses a 4-D model research and development approach which consists of four stages, namely: defining, planning, developing, and disseminating. The results of the module development research are: (1) define, there is no learning module for plumbing and sanitation work practice courses, (2) design, there are sixteen material discussions that are adjusted based on the curriculum and learning outcomes and are composed of learning objectives, material descriptions, summaries. , independent assignments,worksheets; (3) development, the assessment of the material obtained a score of 3.45 in the very appropriate category, the media assessment obtained a score of 3.37 in the appropriate category, and the assessment of the lecturer in charge of the subject received a score of 3.11 in the appropriate category; (4) dissemination, submission of modules to lecturers who are in charge of plumbing and sanitation work practices in the form of hardcopy and softcopy. Keywords: Module, Plumbing, Sanitation, Model 4-D ABSTRAK Penelitian ini bertujuan untuk: (1) memahami dan melaksanakan cara penyusunan modul pembelajaran mata kuliah praktek kerja plambing dan sanitasi; (2) mengetahui kelayakan modul pembelajaran mata kuliah praktek kerja plambing dan sanitasi. Metodologi dalam penelitian ini menggunakan pendekatan penelitian dan pengembangan model 4-D yang terdiri dari empat tahap, yaitu: define (pendefinisian), design (perencanaan), develop (pengembangan), disseminate (penyebarluasan). Hasil penelitian pengembangan modul ini adalah: (1) define, belum tersedianya modul pembelajaran pembelajaran mata kuliah praktek kerja plambing dan sanitasi, (2) design, terdapat empat pembahasan materi, modul tersusun dari tujuan pembelajaran, uraian materi, rangkuman, dan soal latihan; (3) development, saran yang didapat adalah (detail materi dilengkapi, komposisi gambar dengan keterangan, dan ilustrasi menggunakan warna kontras dengan latar). Penilaian pada materi memperoleh skor 3,50 kategori sangat layak, penilaian media memperoleh skor 3,02 kategori layak, dan penilaian guru memperoleh skor 3,59 kategori sangat layak; (4) disseminate, penyerahan modul kepada dosen pengampu mata kuliah praktek kerja plambing dan sanitasi berupa softfile dan hardfile.