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All Journal Inersia : Jurnal Teknik Sipil dan Arsitektur MEDIA KOMUNIKASI TEKNIK SIPIL Rekayasa Sipil JMM (Jurnal Masyarakat Mandiri) Jurnal Aplikasi Teknik Sipil JUTEKS - Jurnal Teknik Sipil JISIP: Jurnal Ilmu Sosial dan Pendidikan GANEC SWARA Jurnal TAMBORA Jurnal Teknik Industri Terintegrasi (JUTIN) Journal of Civil Engineering and Planning (JCEP) Jurnal Informatika Teknologi dan Sains (Jinteks) Hexagon Jurnal Teknik Sipil Journal of Civil Engineering and Environmental (J-Cental)

Dharmawansyah, Dedy

Teknik Sipil, Universitas Teknologi Sumbawa

Author-ID : 1007146

Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation Other

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ANALISIS STABILITAS LERENG AREA KATALA TAMBANG BATU HIJAU KABUPATEN SUMBAWA BARAT Ali Syahidullah; Dedy Dharmawansyah; Hermansyah
Hexagon Jurnal Teknik dan Sains Vol 1 No 1 (2020): HEXAGON - Edisi 1
Publisher : Fakultas Teknologi Lingkungan dan Mineral - Universitas Teknologi Sumbawa

Reclamation carried out by PT. AMNT in the Katala area of 8.14 hectares consists of 2 parts covering part 1 namely areas A, B and C and part 2 namely areas A and B. In designing the geometry of the mine slope, Geotechnical Engineer should optimize the steepness of the mine slope because this is very affect the stability of a slope. The focus of this study examines influence the slope geometry design on the stability of the slope under the existing conditions in parts 1 areas A and B and 5 slope variation models are added. The purpose of this study was to obtain the value of safety factor using the Fellenius method used GeoStudio 2018 sub-program Slope / W to be recommended as consideration data in analyzing the stability of special slopes in the Batu Hijau mine reclamation activity. The results obtained by the safety factor value in section 1 area A for the existing conditions is 2.483, the variation models I to V obtained successive results of 1.670, 1,297,1,250, 1,041, 0,687, then in section 1 area B obtained the value of the safety factor for the existing conditions is 2,373, variation models I to V are 1,585, 1,254, 1,230, 1,003 0,651. while the manual analysis obtained the value of the safety factor in section 1 area A for existing conditions of 2,410, the variation models I to V successively amounted to 1.576, 1.253, 1.187, 1.020 0.608. In section 1 area B, the safety factor values for the existing conditions is 2,311, the variation models I to V are 1,506, 1,246, 1,182, 0,964 0,587.

ANALISIS DINDING PENAHAN TANAH PADA SUNGAI BRANG BIJI Riska Handayana; Dedy Dharmawansyah; Eti Kurniati; Adi Mawardin
Hexagon Jurnal Teknik dan Sains Vol 1 No 2 (2020): HEXAGON - Edisi 2
Publisher : Fakultas Teknologi Lingkungan dan Mineral - Universitas Teknologi Sumbawa

Brang Biji River is one of the rivers prone to flooding. Flooding occurs can result in a collapse in the construction of the retaining walls of the soil causing substantial harm to the surrounding community. It takes an alternative in maintaining the stability of slopes to reduce the avalanche in the Brang Biji River. Alternative wall retaining walls namely pairs of stone times and Sheet Pile, while comparative analysis to determine the type of effective construction used in the Brang Biji river using manual calculation method and software Plaxis 8.6. Data collection through field surveys, to get soil type data, geometrics slopes, and soil layer. To get the stability of slope in existing condition, in case of a cladding with SF ? 1 criteria using method of reverse analysis or approach based on trial and error literature. Results obtained from the reverse analysis are used for the analysis of the compoon on the slope of the Brang Biji River, either by manual calculation or Software Plaxis 8.6 In determining the value of SF. After analysis of the stability of the slope, obtained the result that by using a stone time retaining wall with a height of 5.5 m, the bottom width of 3.85 m, the upper width of 0.6 m with a depth of 1.5 m from the ground surface and the height of the river water face around 7.8 m , both against the bolsters with SF = 3.4, against sliding with SF = 2.17 and the power of land with SF = 3 manually while using the Plaxis Software with the addition of the working floor with a thickness of 10 cm and piling with a diameter of 40 cm with a distance of 25 cm obtained SF = 1.26. Whereas by using Sheet Pile use manual calculation obtained depth (D) Sheet Pile about 2.43 m with a large stability backup (SF) = 1.5 D and the length of Sheet Pile as a whole about 8.43 m from ground level, while using Plaxis obtained value SF = 1,167.

ANALISIS PENGARUH JENIS PLASTIK TERHADAP DENSITAS DAN KUAT TEKAN PADA BATAKO RINGAN BERBAHAN LIMBAH PLASTIK DAN BATU APUNG Sopyan Ali Rohman; Muhammad Ibadurrahman; Dedy Dharmawansyah
Hexagon Jurnal Teknik dan Sains Vol 1 No 2 (2020): HEXAGON - Edisi 2
Publisher : Fakultas Teknologi Lingkungan dan Mineral - Universitas Teknologi Sumbawa

The amount of plastic used in this era has many impacts, one of which is plastic waste, but this shows that plastic has many benefits and advantages so that it is used in almost all things in everyday life. Reuse (recycling) of plastic will be very helpful in dealing with plastic waste problems. One alternative to plastic recycling is the use of plastic waste as a material for making lightweight bricks. Problems that are often encountered in the use of conventional brick in this era are the density (density) and compressive strength, where the expected results are with a low density (density), can produce high compressive strength. Presentation of the above problems makes the writer interested in researching the use of plastic waste to be used as raw material for making lightweight bricks. In this study used 4 variations of plastic types, namely PP, LDPE, and HDPE, making plastic specimens mixed with pumice waste because it has porous and lightweight characteristics, with a ratio of 50:50 from volume. With each variation consists of 2 (two) beam-shaped samples to be tested for density (?) and compressive strength (P). A total of 6 samples. The results showed that LDPE plastic material mixed with pumice has the best density and compressive strength compared to other types of mixtures with the value of ? = 0.76g / cm2, and P = 123.15kg / cm2 or 12.08MPa.

PENGARUH PERSENTASE KOMPOSIT BATU APUNG DAN PLASTIK PET TERHADAP DAYA SERAP BUNYI Izzuddin Abu Bakar; Sopyan Ali Rohman; Dedy Dharmawansyah; Fadhli Dzil Ikram
Hexagon Jurnal Teknik dan Sains Vol 1 No 2 (2020): HEXAGON - Edisi 2
Publisher : Fakultas Teknologi Lingkungan dan Mineral - Universitas Teknologi Sumbawa

This sound absorption test was conducted by finding the value of Sound Transmission Class (STC) using the impedance tube testing method that refers to the ASTM E413 standard. This study aims to determine the effect of the percentage of composite pumice - PET plastic on sound absorption. As for the variation of the volume fraction of pumice: PET plastic that is (40:60, 50:50, 60:40)% based on the volume ratio. In this study it can be seen that the highest value in the sound absorption test is found in composites with a volume fraction of 40:60 with an STC value of 25, while the lowest value is found in composites with a volume fraction of 60:40 with an STC value of 11. Based on the results of this study, composite with a volume fraction of 40:60 is the best percentage in the sound absorption test because the greater the STC of a material, the better it is at absorbing sound.

PENGARUH PENAMBAHAN LIMBAH ABU CANGKANG KEMIRI DAN ABU BONGGOL JAGUNG TERHADAP UJI KUAT TEKAN PADA PAVING BLOCK Dwi Nata, Oktavian; Dharmawansyah, Dedy
Hexagon Jurnal Teknik dan Sains Vol 5 No 2 (2024): HEXAGON - Edisi 10
Publisher : Fakultas Teknologi Lingkungan dan Mineral - Universitas Teknologi Sumbawa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36761/hexagon.v5i2.4255

Paving Block is a mixed composition consisting of cement, sand and water as a binding agent. In this research, we carried out an innovation in making paving blocks by utilizing waste candlenut shell ash and corncob ash with a substitute mixture of 25%, 5% candlenut shell ash and 15%, 5% corncob ash at CV Maras Beton Sumbawa. The aim of this research is to determine the compressive strength of paving blocks, visual defects in paving blocks and to determine the water absorption capacity of paving blocks with a test age of 28 days. Based on research results, the highest compressive strength of paving blocks was a mixture of 15% candlenut shell ash, 5% corncob ash with a compressive strength value of 20.41MPa. Meanwhile, the lowest strength value was found in a mixture of 25% candlenut shell ash and 15% corncob ash with a compressive strength value of 12.88 Mpa. Meanwhile, the maximum water absorption value was in a mixture of 15% candlenut shell ash and 15% corncob ash with a water absorption value of 6.67%. Meanwhile, the lowest water absorption value was a mixture of 15% candlenut shell ash and 5% corncob ash with a water absorption value of 10%. Meanwhile, visually defects in paving blocks are found in a mixture of 25% candlenut shell ash and 15% corncob ash, there are porosity defects or cavities on the surface of the paving block, resulting in a decrease in the compressive strength value. All variations of mixed substitutes meet the compressive strength standards and water absorption standards for paving blocks in accordance with standards (SNI 0691 – 1996) but only vary in the values ??of water absorption capacity and compressive strength.

Co-Authors Adi Mawardin Adi Mustikatari Lismula Afri Budianto Afrilia, Helda Ahmad Yamin Ali Syahidullah Angelina Leonora Vera Ansyary, Muhammad Isa Anwar, Abdullah Ariansyah, Yopi ARMAYADI, ARMAYADI Auliya Kasyfil Aziz Azmy, Isnia Nurul Desti Putria Dewita Sari Dharmayanda, Hardian Reza Dwi Nata, Oktavian Eti Kurniati Eti Kurniati, Eti Fadhli Dzil Ikram Fardila, Dinda Faruqi, Muhammad Alfian Hayatuzzahra, Sayidatina Hermansyah Hermansyah Hermansyah Hermansyah Izzuddin Abu Bakar Lismula, Adi Mustikatari Mawardin, Adi Mery Komalasari Mohammed, Bashar S Muhammad - Jayyid Muhammad Ibadurrahman Nasrul Amri Riska Handayana Sopyan Ali Rohman Susilawati, Tri Tri Susilawati Ummi Khairiyah Br Maha Zainuddin Husainy

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