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INDONESIA
eUREKA : Jurnal Penelitian Mahasiswa Teknik Sipil dan Teknik Kimia
Published by Universitas Tribhuwana Tunggadewi
ISSN : -     EISSN : 2548771X     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Energy Engineering Industrial & Manufacturing Engineering
Focus and Scope of this journal are : Chemical Engineering including : bioenergy processing, environmental engineering, natural resource management, Heat and Mass Transfer, Chemical Reaction, Analytical Chemistry, Biochemistry, Designing tools and chemical processes, Chemical industry process, Computing and modeling (simulation) process, Particle and nano technology, membrane technology, esessential oil technology, and phytopharmaca, etc. Civil Engineering including : technology of construction materials, transportation system, environmental layout, concrete and wood structures, steel construction, bridge and dam construction, management of water resources and Hydrology, earthquake engineering, sanitation systems and urban drainage. eUREKA is published twice a year on Juni and December by Engineering Faculty of Universitas Tribhuwana Tunggadewi Malang
Arjuna Subject : -
Articles 160 Documents
 12   13   14   15   16 
ANALISA TINGKAT PELAYANAN LALU LINTAS SIMPANG LIMA PADA RUAS JALAN TUNGGULWULUNG KECAMATAN LOWOKWARU KOTA MALANG Maia, Jenina Duarte; Rahma, Pamela Dinar
eUREKA : Jurnal Penelitian Teknik Sipil dan Teknik Kimia Vol 3, No 2 (2019): EDISI DESEMBER 2019
Publisher : Universitas Tribhuwana Tunggadewi Malang

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Kota Malang merupakan kota terbesar kedua di Propinsi Jawa Timur dengan luas 110.06 km2, setelah Kota Surabaya, dengan jumlah populasi peduduk 895.387 jiwa (2017) dengan peningkatan 3,9% setiap tahunnya. Pertumbuhan penduduk yang setiap tahunnya terus bertambah. Dengan pertumbuhan lalu lintas yang semakin cepat harus diimbangi pula dengan peningkatan sarana transportasi yang memadai sehingga ruas jalan tidak menimbulkan hambatan dan kemacetan. Salah satu wilayah yang terkena dampak dari lalu lintas yaitu di Jalan Tunggulwulung kecamatan Lowokwaru, Kota Malang. Tujuan dari penelitian ini adalah untuk mengetahui karakteristik, kapasitas ruas jalan, tingkat pelayanan jalan dan yang terakhir untuk mengetahui kapasitas dan tingkat pelayanan jalan selama 5 tahun. Untuk memperoleh data lalu lintas dilakukan survei lalu lintas. Kemudian data-data tersebut diolah sehingga menghasilkan (LHR) pada minggu pertama lebih besar dari minggu kedua dengan jumlah minggu pertama 7646 smp/jam dan minggu kedua 7427 smp/jam, Kapasitas (C) Jalan Simpang Lima Tunggulwulung pada tahun 2018 adalah sebesar 1526,56 smp/jam, sedangkan prediksi kapasitas pada 5 tahun berikutnya adalah sebesar 1207,16 smp/jam, tingkat pelayanan jalan 5 tahun kedepan L yaitu kondisi arus tertahan/rendah. Kata kunci : Kapasitas jalan, LHR, Lalu lintas. ABSTRACT Malang City is the second largest city in East Java Province with 110,06 km2 area, after Surabaya City, with population of 895,387 people (2017) with 3.9% increase every year. Population growth that continues to increase every year along must be balanced also with the improvement of adequate means of transportation so that roads do not cause obstacles and congestion. One of the areas affected by traffic growth is in Jalan Tunggulwulung Kecamatan Lowokwaru, Malang. The purpose of this research is to know some important things the characteristics, the capacity of the road, the level of road service and the last to know the capacity and the level of road service for 5 years. To obtain traffic data conducted traffic surveys. Then the data is processed so as to produce (LHR) in the first week is greater than the second week with the number of the first week 7646 smp / hour and second week 7427 smp / hour, Capacity (C) Jalan Simpang Lima Tunggulwulung in 2018 amounted to 1526, 56 smps / hour, while the prediction of capacity in the next 5 years is 1207.16 pcu / hour, the level of road service 5 years ahead L that is the condition of the stuck / low current.
STUDI PERKERSAN JALAN DAN PERBAIKAN TANAH CRACK PADA RUAS JALAN SITIREJO KECAMATAN WAGIR KABUPATEN MALANG (STA 0 + 000 – STA 1 + 000) Nyuru, Andri Kering; Rahma, Pamela Dinar
eUREKA : Jurnal Penelitian Teknik Sipil dan Teknik Kimia Vol 3, No 2 (2019): EDISI DESEMBER 2019
Publisher : Universitas Tribhuwana Tunggadewi Malang

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Abstract

Soil crack or base soil is the foundation for the pavement of both the pavement on the traffic and the shoulder. Thus the base ground is the last construction to receive the vehicle loads supplied by the pavement. Soil is a substantial component of subgrade that has different characteristics and behaviors, so that each type of soil has certain characteristics. Soil properties affect the resistance of the above layers. Local roads according to jitden bina marga (1997) is a public road that serves local transport with the characteristics of short distance trips, low average speed and the number of access roads are not restricted. The street pets are meant to make the path fulfill the role as in the design. This research is descriptive to know the description of factors - factors that affect road damage. This research is only done for road status in Sitirejo Wagir Subdistrict, Malang Regency. This study only examines the main factors affecting road conditions that are mainly caused by damage to existing roads in the village of Sitirejo. From the results of field research, obtained damage to Sitirejo Road Area Wagir District, Malang Regency, among others, Cracked Alien Crack (Aligator Crack), deformation, surface texture damage. From result of observation result of damage and based on from Public Works Department Directorate General of Highways, Road Pavement Design Manual, No 02 / M / BM / 2013, improvement corresponding to four points that is Achievement of service level, Implementation of life cycle cost minimization, Consideration of practicality of execution , Efficient use of materials.
PRA RANCANG BANGUN PABRIK PUPUK BIOCHAR DARI CANGKANG KEMIRI DENGAN KAPASITAS 6.450,9320 TON/TAHUN MENGGUNAKAN ALAT UTAMA SPRAY CHAMBER Rahayu, Yeni Ulfi; Iskandar, Taufik
eUREKA : Jurnal Penelitian Teknik Sipil dan Teknik Kimia Vol 3, No 1 (2019): EDISI JUNI 2019
Publisher : Universitas Tribhuwana Tunggadewi Malang

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Abstract

Biochar fertilizer is a porous black charcoal produced by pyrolysis process with a relative temperature below 700 oC enriched with nitrogen (N). The benefits of biochar fertilizer are as a natural fertilizer (organic fertilizer) which is good for improving the condition of contaminated soil due to excessive use of chemical fertilizers and pesticides. Pecan shell waste has the potential to be used as a raw material in making biochar fertilizer by adding chicken manure which serves as a substitute for nitrogen elements that are lost in the candlenut biochar which is reduced or disappears during the pyrolysis process. The design of biochar fertilizer is planned to be established in 2021 in Dairi Regency, North Sumatra. Production capacity is planned to be 6,450.9320 tons / year with 9 hours / production, 300 days / year and in one day there are 2 processes. The process used is slow pyrolysis (slow pyrolysis) is one of the technologies used to convert hazelnut shell waste into charcoal (biochar). Based on economic analysis, the total investment in production is Rp. 15,924,053,007.45. Product sales value of Rp. 38,705,591,883 per year, with profit before and after tax is Rp. 9,978,936885 per year and Rp. 8,981,043,197 per year. The results of the feasibility analysis obtained ROI at (%): 64.86%, POT (Year): 1.4 Years, BEP (%): 32.333%, IRR (%): 20.296% So it can be concluded that the Pre-Design of Biochar Fertilizer with capacity of 6,450.9320 tons/year is worthy of being established.
PERBANDINGAN METODE MICROWAVE ASSISTED DISTILLATION (MAD) DAN MICROWAVE ASSISTED HYDRO DISTILLATION (MAHD) TERHADAP JUMLAH YIELD DAN MUTU MINYAK ATSIRI DARI KULIT JERUK MANIS (CITRUS AURANTIUM) Deta, Devinta Anastasia; Kartika Fitri, Ayu Chandra
eUREKA : Jurnal Penelitian Teknik Sipil dan Teknik Kimia Vol 3, No 1 (2019): EDISI JUNI 2019
Publisher : Universitas Tribhuwana Tunggadewi Malang

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Ekstraksi kulit jeruk ini dilakukan dengan tujuan untuk mengetahui dan membandingkan data % yield dan mutu minyak atsiri dari kulit jeruk dengan membandingkan metode microwave assisted distillation (MAD) dan microwave assisted hydrodistillation (MAHD), dan untuk mengetahui senyawa-senyawa kimianya yang diperpleh dengan uji GC-MS. Kondisi operasi adalah 75 menit denga suhu 100O C dengan daya microwave 100 watt, volume solven metode MAHD adalah 200 liter. Hasil penelitian ini didapatkan rendemen pada metode MAHD sebesar 2,9ml/400gram, sedangkan metode MAD sebesar 2,7ml/400gram. Komposisi kimia minyak atsiri kulit jeruk manis yang diperoleh dari metode MAD dan MAHD secara umum hanya limonen (C10H16) dan linalool (C10H18O) yang sama. Hasil metode MAD didapatkan jumlah oxygenated compounds (3,14%) , metode MAHD (0,63%). Sedangkan jumlah non-oxygenated compounds untuk metode MAD (97,97 %), metode MAHD (99,37%). Kata kunci : minyak atsiri; microwave; kulit jeruk manis; ekstraksi ABSTRACT This orange peel extraction was conducted with the aim of knowing and comparing the yield and quality data of citrus peel oil by comparing microwave assisted distillation (MAD) and microwave assisted hydrodistillation (MAHD) methods, and for knowing chemical compounds obtained by GC test -MS. Operating condition is 75 minutes with temperature 100O C with 100 watt microwave power, solvent volume method MAHD is 200 liter. The result of this research was obtained rendemen on MAHD method 2,9ml / 400gram, while MAD method equal to 2,7ml / 400gram. The chemical composition of the sweet orange peel oil obtained from the MAD and MAHD methods is generally the same limonen (C10H16) and linalool (C10H18O). The result of MAD method obtained the amount of oxygenated compounds (3,14%), MAHD method (0,63%). While the amount of non-oxygenated compounds for MAD method (97.97%), MAHD method (99.37%).
STUDI PERBANDINGAN BIAYA BAHAN PADA BEKISTING KAYU DAN BONDEK PADA MUSEUM MPU PURWA KOTA MALANG Daghu, Yehezkhiel; Arifianto, Andy Kristafi
eUREKA : Jurnal Penelitian Teknik Sipil dan Teknik Kimia Vol 3, No 2 (2019): EDISI DESEMBER 2019
Publisher : Universitas Tribhuwana Tunggadewi Malang

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Mendirikan sebuah bangunan dengan mempertimbangkan segala aspek kostruksi adalah item utama yang diperlukan dalam dunia konstruksi, yang mana aspek biaya dari pembangunan itu sendiri yang biasa disebut dengan sebutan Rencana Anggaran Biaya (RAB) dengan mengikuti acuan dasar dari Peraturan Menteri Pekerjaan Umum Perumahan Rakyat (Permen PUPR) adalah Peraturan Perundang ? undangan di Indonesia yang ditetapkan oleh Presiden kepada menteri terkait untuk menjalankan peraturan sebagaimana mestinya. Hasil analisa harga satuan diambil dari PermenPUPR 28 ? 2016 dari hasil analisa tersebut akan diperoleh Rencana Anggaran Biaya (RAB) yang menetukan volume dari setiap item yang akan dibahas pada pembahasan. [1] Objek penelitian saat ini terletak di Jln. Soekarno ? Hatta tepatnya pada Museum MPU Purwa Malang. Analisa harga satuan serta Rencana Anggaran Biaya (RAB) difokuskan pada pekerjaan bekisiting kayu yang hasil analisanya nanti akan dikaji atau dibandingkan dengan hasil analisa dari bondek, dengan kata lain hasil analisa dari bekisting kayu akan menjadi acuan pada analisa bondek. Hasil penelitian menunjukkan bahwa : (1) Bahan pelat bondek lebih murah 9% dari bahan bekisting kayu, (2) Pelat bondek lebih mudah dalam pelaksanaan, (3) Material untuk pekerjaan bekisting kayu lebih mudah didapatkan dibanding dengan pelat bondek. Berdasarkan ketiga aspek tersebut, untuk pemilihan khususnya pekerjaan pelat direkomendasikan untuk menggunakan pelat bondek. Kata kunci : bekisting kayu, bondek, biaya pekerjaan. ABSTRACT Establish a building taking into account all aspects of kostruksi is the main items needed in the world of construction, which cost aspects of the construction itself is commonly referred to as The Plan Cost Budget and following the reference of the basis of the regulation of the Minister of public works Housing (PERMEN PUPR) is the Laws ? the invitation in Indonesia that are assigned by the President to the Minister related to run the rules properly. The results of the analysis of unit price is taken from the PermenPUPR 28 ? 2016 from the analysis results will be retrieved The Plan Cost Budget that determine the volume of each of the items that will be discussed on the discussion. [1]. The objects of research are currently located in Jln. Soekarno ? Hatta at the Museum of the MPU Purwa Malang. Unit price analysis and cost budget Plan (RAB) focused on the work of bekisiting wood, gave results will be examined or compared with the results of the analysis of bondek, in other words the results of analysis of formwork timber will be a reference analysis on bondek. The results showed that: (1) cheaper bondek plate Materials 9% of timber formwork materials, (2) Plate bondek easier in implementation, (3) Material for formwork timber jobs more easily obtained than with the bondek plate. Based on these three aspects, for the selection of particular work plates are recommended to use the plates bondek.
ANALISA PANJANG ANTRIAN KENDARAAN DENGAN TUNDAAN PADA PERSIMPANGAN BERSIGNAL DI KOTA BATU (STUDI KASUS: JALAN IMAM BONJOL BAWAH, JALAN DIPONEGORO, JALAN WUKIR DENGAN JALAN PATIMURA) Bien, Agustinus; Primasworo, Rifky Aldila
eUREKA : Jurnal Penelitian Teknik Sipil dan Teknik Kimia Vol 3, No 1 (2019): EDISI JUNI 2019
Publisher : Universitas Tribhuwana Tunggadewi Malang

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Abstract

Persimpangan Kota Batu, merupakan salah satu persimpangan di wilayah kota Batu yang tingkat arusnya ramai lancar. Hal ini disebapkan karena merupakan salah satu kota wisata dijawa timur dan juga penghubung utama malang-kediri dan malang-jombang. Sehubungan dengan hal tersebut, diperlukan evaluasi dan optimalisasi kinerja simpang. Dalam mengevaluasi kinerja simpang bersinyal harus berdasarkan pada MKJI 1997, agar prosedur kinerja yang dijalankan berjalan sisitematis, teratur, dan tertib sehingga bisa dipertangung jawabkan secara ilmiah. Untuk mengoptimalisasikan simpang bersinyal simpang empat kota batu, dilakukan beberapa alternatif perbaikan. Hasil dari analisa panjang antrian dan tundaan simpang bersinyal Simpang Empat Kota Batu didapatkan nilai Panjang Antrian dan Tundaan antara lain sebagai berikut: Panjang antrian Jalan Wukir : Pagi 473,01 meter, siang 481,78 meter, sore 478,27 meter. Panjang antrian Jalan Diponegoro : Pagi 73,36 meter, siang 73,48 meter, sore 73,36 meter. Panjang antrian Jalan Imam Bonjol Bawah : Pagi 121,49 meter, siang 124,89 meter, sore 128,29 meter. Panjang antrian Jalan arah Patimura : Pagi 67,96 meter, siang 68,07 meter, sore 67,87 meter. Tundaan Simpang rata-rata: Pagi : 226,43 dtk/smp, Siang : 232,99 dtk/smp, Sore :232,19 dtk/smp. Kata kunci : Antrian,Tundaan simpang bersignal ABSTRACT The intersection of Batu City, is one of the intersections in Batu city area that the current level is crowded smoothly. This is because it is one of the eastern tourist towns and also liaison malang-kediri and malang-jombang. In this connection, evaluation and optimization of intersection performance is required. In evaluating the performance of the intersection should be based on MKJI 1997, so that the performance procedures that run running sisitematis, regular, and orderly so that can be held scientifically answered. To optimize the intersection of the intersection of four stone towns, several alternative improvements were made. The result of queue length analysis and intersection delay of intersection of Batu City got the value of Queue Length and Delay among others as follows: Length of queue Wukir Road: Morning 473,01 meter, afternoon 481,78 meter, afternoon 478,27 meter. Length of queue road Diponegoro: Morning 73,36 meter, afternoon 73,48 meter, afternoon 73,36 meter. Length queue road Imam Bonjol Bawah: Morning 121.49 meters, noon 124.89 meters, afternoon 128,29 meters. Length queue Road direction Patimura: Morning 67.96 meters, noon 68.07 meters, afternoon 67,87 meters. Average Intersection delay: Morning: 226,43 sec / smp, Noon: 232,99 sec / smp, Afternoon: 232,19 sec / smp
PRA RANCANG BANGUN BIOETANOL DARI NIRA AREN DENGAN KAPASITAS 1.438.269 LITER/TAHUN DENGAN ALAT UTAMA FERMENTOR Susilo, Nicodemus; Abrina Anggraini, Sinar Perbawani
eUREKA : Jurnal Penelitian Teknik Sipil dan Teknik Kimia Vol 3, No 1 (2019): EDISI JUNI 2019
Publisher : Universitas Tribhuwana Tunggadewi Malang

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Bioetanol (C2H5OH) merupakan salah satu biofuel yang hadir sebagai bahan bakar alternatif yang lebih ramah lingkungan dan sifatnya yang terbarukan. Merupakan bahan bakar alternatif yang diolah dari tumbuhan yang memiliki keunggulan karena mampu menurunkan emisi CO2 hingga 18%, dibandingkan dengan emisi bahan bakar fosil seperti minyak tanah. Bioetanol dapat dibuat dari bahan-bahan bergula, berpati (karbohidrat), ataupun berserat seperti singkong atau ubi kayu, tebu, nira, ubi jalar, jagung, ganyong dan lain-lain. Bahan bergula yang digunakan untuk menghasilkan bioetanol tersebut yaitu dari Nira Aren karena dilihat dari ketersediaan bahan baku dan tidak memerlukan proses pendahuluan karena bentuk senyawa karbohidratnya sudah siap diubah oleh mikrobia sehingga nira tersebut dapat langsung difermentasi. Pra Rancang Bangun Bioetanol dari Nira Aren dengan Kapasitas 1.438.269 Liter/Tahun dengan menggunakan Alat Fermentor tersesebut menggunakan proses Fermentasi Anaerob. Lokasi pabrik direncanakan akan didirikan di Desa Trente, Kecamatan Candimulyo, Kabupaten Magelang ? Jawa Tengah. Bentuk perusahaan adalah Perseroan Terbatas (PT). Berdasarkan analisa ekonomi, Pabrik Bioetanol dari Nira Aren ini layak didirikan dengan penilaian investasi sebagai berikut: Total Capital Invesment (TCI) : Rp. 14.990.743.048; Return Of Invesment (ROI) sebelum dan sesudah pajak 35,51 % dan 31,96 %; Pay Out Time (POT) 2,9 tahun; Break Even Point (BEP): 34,8 %; Internal Rate Of Return (IRR) : 58,24 %. Kata-kata Kunci : bioetanol, proses anaerob, nira aren ABSTRACT Bio-ethanol is one of biofuel that comes as an alternative fuel which is more become an eco-friendly and renewable. An alternative fuel that processed from plant that have an advantage of being able to reduce CO2 emission until 18% compared to others fuel emissions, such as kerosene. Bio-ethanol can be produced from a large variety of sugars, starchy (carbohydrates), or fibrous such as cassava, sugar cane, sweet potato, corn, ganyong etc. the sugary ingredients used to produced bio-ethanol are palm juice, it can be seen from the availability of raw materials and it does not need a preliminary process because of the form of the carbohydrates compounds are ready to be changed by microbes, so the palm juice can be fermented directly. Pre-design of bio-ethanol of palm juice to a capacity of 1.438.269 liter/years by using main devices fermentor by using Anaerobe fermentation process. The company?s location is planned to build in DesaTrente, Kecamatan Candimulyo, Kabupaten Magelang ? Central Java. The form of the company is a Limited Liability Company (PT). Based on economic analysis, Bio-ethanol palm juice Factory is proper to build with investment assessment as follows: Total Capital Investment (TCI) : Rp. 14.990.743.048; Return Of Investment (ROI) before and after tax 35,51 % and 31,96 %; Pay Out Time (POT) 2,9 years; Break Even Point (BEP): 34,8 %; Internal Rate Of Return (IRR) : 58,24 %
PRA RANCANG BANGUN PABRIK PUPUK BIOCHAR DARI CANGKANG KEMIRI DENGAN KAPASITAS 6.450,9320 TON/TAHUN MENGGUNAKAN ALAT UTAMA ROTARY KILN Ayu, Agnes Diah; Iskandar, Taufik
eUREKA : Jurnal Penelitian Teknik Sipil dan Teknik Kimia Vol 3, No 2 (2019): EDISI DESEMBER 2019
Publisher : Universitas Tribhuwana Tunggadewi Malang

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Abstract

Biochar fertilizer is a porous black charcoal produced by pyrolysis process with a relative temperature below 700 oC enriched with nitrogen (N). The benefits of biochar fertilizer are as a natural fertilizer (organic fertilizer) which is good for improving the condition of contaminated soil due to excessive use of chemical fertilizers and pesticides. Pecan shell waste has the potential to be used as a raw material in making biochar fertilizer by adding chicken manure which serves as a substitute for nitrogen elements that are lost in the candlenut biochar which is reduced or disappears during the pyrolysis process. The design of biochar fertilizer is planned to be established in 2021 in Dairi Regency, North Sumatra. Production capacity is planned to be 6,450.9320 tons / year with 9 hours / production, 300 days / year and in one day there are 2 processes. The process used is slow pyrolysis (slow pyrolysis) is one of the technologies used to convert hazelnut shell waste into charcoal (biochar). Based on economic analysis, the total investment in production is Rp. 15,924,053,007.45. Product sales value of Rp. 38,705,591,883 per year, with profit before and after tax is Rp. 9,978,936885 per year and Rp. 8,981,043,197 per year. The results of the feasibility analysis obtained ROI at (%): 64.86%, POT (Year): 1.4 Years, BEP (%): 32.333%, IRR (%): 20.296% So it can be concluded that the Pre-Design of Biochar Fertilizer with capacity of 6,450.9320 tons/year is worthy of being established.
PENGARUH ABU AMPAS TEBU SEBAGAI ALTERNATIF PENGGANTI PORTLAND CEMENT (PC) FC’=19 MPA TERHADAP KUAT TEKAN DAN KUAT TARIK BETON) Koi, Damianus; Rasidi, Nawir
eUREKA : Jurnal Penelitian Teknik Sipil dan Teknik Kimia Vol 3, No 2 (2019): EDISI DESEMBER 2019
Publisher : Universitas Tribhuwana Tunggadewi Malang

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Abu ampas tebu (AAT) yang berasal dari PT. PG Kebon Agung Kota Malang merupakan limbah yang memiliki kandungan silikat sebesar 68,5 %. Penelitian terhadap AAT dilakukan sebagai bahan substitusi parsial semen dengan prosentase secara berturut-turut 0%, 7%, 9%, 13%, 15% terhadap berat semen. Penelitian ini bertujuan untuk mengetahui pengaruh AAT terhadap kuat tekan dan kuat tarik beton lentur dan Penggunaan air untuk campuran beton dalam penelitian ini dibuat sama untuk setiap prosentase AAT. Hasil penelitian menunjukkan semakin tinggi prosentase AAT maka semakin rendah workability beton segar. Penggunaan AAT tidak mempengaruhi peningkatan kuat tarik lentur tetapi memberi peningkatan pada modulus elastistas dan kuat tekan. Modulus elastisitas beton dengan AAT lebih besar dari beton tanpa AAT kecuali pada prosentase 15%. Kuat tekan yang diperoleh melebihi kuat tekan yang direncanakan dan peningkatan terbesar terjadi pada Prosentase 9%. secara keseluruhan AAT dapat dimanfaatkan sebagai bahan substitusi parsial semen dalam campuran beton dengan prosentase optimum pada prosentase 9% berdasarkan kekuatan dan workabilitynya. Kata kunci: ampas tebu, kuat tekan, kuat tarik beton, prosentase optimum. ABSTRACT Ash bagasse (AAT) originating from PT. PG Kebon Agung Malang is a waste that has silicate content of 68.5%. The study of AAT was performed as partial substitution material of cement with percentage successively 0%, 7%, 9%, 13%, 15% to the weight of cement. This study aims to determine the effect of AAT on the compressive strength and tensile strength of concrete bending and Water use for concrete mixture in this study is made equal for every AAT percentage. The results showed the higher the percentage of AAT, the lower the workability of fresh concrete. The use of AAT does not affect the increase in tensile strength of tensile but gives an increase in the elastic modulus and compressive strength. The modulus of elasticity of concrete with AAT is greater than concrete without AAT except in percentage 15%. The compressive strength obtained exceeds the planned compressive strength and the greatest increase occurs in Percentage 9%. overall AAT can be utilized as partial substitution material of cement in concrete mixture with optimum percentage at 9% percentage based on strength and workability.
EVALUASI TINGKAT PELAYANAN RESERVOIR PDAM KABUPATEN PULAU MOROTAI AREA LAYANAN KECAMATAN MOROTAI SELATAN Alam, Iradat; Khaerudin, Dian Noorvy
eUREKA : Jurnal Penelitian Teknik Sipil dan Teknik Kimia Vol 3, No 1 (2019): EDISI JUNI 2019
Publisher : Universitas Tribhuwana Tunggadewi Malang

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Clean water management in South Morotai District is managed by the Morotai Island District PDAM. The volume of the reservoir in the service area of South Morotai District is 450 m3 with a capacity of 25 liters/second sourced from the mangere spring. This study aims to determine the current reservoir capacity whether it is still able to meet the increasing demand for clean water throughout the year based on the projected population from 2017-2027. The population of the South Morotai District Service area in 2017 is 9.336 people. The projection of the population until 2027 is 19.371 people. Reviewed from the large production capacity of PDAM, the service area of South Morotai District has been able to meet the total customer needs of 8.018 liters / second in 2017 and 16.697 liters / second in 2027. Reservoir has not been able to serve customers' needs 24 hours a day, because water cannot be flowed continuously. This is because the reservoir volume is much smaller than the total needs of 735 m3 customers in 2017 and 1.443 m3 in 2027. For this reason, there must be a development of an increase in reservoir volume of 1.600 m3 in order to fulfill all customer requirements that are adjusted to the management criteria for clean water from Ditjen Cipta Karya PU 1996.

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