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Ayu Chandra
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Kota malang,
Jawa timur
INDONESIA
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia
ISSN : 25033654     EISSN : 25032682     DOI : -
Core Subject : Social, 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.
Arjuna Subject : -
Articles 118 Documents
ANALISA KAPASITAS DAN TINGKAT KINERJA SIMPANG BERSINYAL (STUDI KASUS SIMPANG TIGA PURWOSARI KABUPATEN PASURUAN) Esti Widodo
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 1, No 1 (2016)
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v1i1.639

Abstract

Signaled Purwosari T-junction Pasuruan is one of the intersections in Pasuruan with moderately crowded traffic as the main road connecting Surabaya - Malang and Pasuruan - Malang. Its current status requires an evaluation and a performance optimization. The primary data used for the analysis was obtained through field surveys, while the performance analysis using MKJI 1997 methods. Based on the final results of the analysis can be concluded, the level of performance intersection experiencing saturation and congestion, especially the direction from Surabaya to Malang. To obtain optimal performance of the intersection, do some alternative solutions changing light signal cycle and adding approached width. Alternative lights signal cycle change are the best solution in terms of cost because it is easy and fast, compared to adding approached width.
PENATAAN RUANG KAWASAN SUMBER AIR JERUK DAN MARON KABUPATEN MALANG Galih Damar Pandulu
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 1, No 1 (2016)
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v1i1.640

Abstract

The area of Jeruk and Maron water source has been determined as tourism development area in Area Lay-Out Planning of Malang 2007. This research is aimed to identify the physical characteristics and arrange the spatial development brief of Jeruk and Maron water source. Analysis method is used land capability analysis. Assessment is adapted with physical characteristics which is used the scoring method to appropriate land capability analysis. Assessment factors are viewing zones , topography , vegetation density and soil type . Determination of land value is adapted to land capability value. The research result shows that the area of Jeruk and Maron water source has a varied topography and altitude ranges from 300 to 337.5 meters above sea level, Alluvial soil type , soil effective depth is at a depth of more than 90 cm , and the average rainfall is 1761mm per year with 84.85 rainy days per year. Based on result of land ability analysis be concluded that the area of Jeruk and Maron water source is at high and medium class conservation land. The Brief of spatial planning to spatial distribution in the area of Jeruk and Maron water source is conducted to appropriate with zoning analysis result which it obtained from analysis of land ability as protection and utilization block. Distribution block is a form of attempts to form a synergy and harmonious order of site plan between activities in the area for conservation functions.
STUDI PERENCANAAN ULANG DINDING PENAHAN PADA HULU BENDUNG KRAMAT KECAMATAN TUMPANG KABUPATEN MALANG Kiki Frida Sulistyani; Kadir Lebao
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 1, No 1 (2016)
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v1i1.641

Abstract

This study aimed to performre-planning study on there taining wall of Kramat Weir, Tumpang District, Malang Regency. This planning wasused to over come the river bed scour resulting land slide and collapse of retaining walls at the up stream weir. Before planning the retaining wall, firstly it was performed hydrologican alysisconsisted of collecting rainfall data, rainfall analysis designed by Log Pearson Type III method, and calculating the design flood dischargeby using Nakayasu Method. Hydrological analysis resulted that flood discharge of 50 years period plan(Q50years) was 73.636m3/sec;with water level of2.50mabove weir plan. From the calculation results it was obtained that water level above weir could be planned the dimensions of retaining wall planned with building height (h) = 4.5 m (from foundation base), talud slope (z) 1:0.2 (v:h), depth offoundation (Df) = 1m, width of foundation base (b) = 2.50 m to the type of masonryconstruction. Analysis of stability of soil to capacity was less than robust ground i.e. Qallowed17.827t/m2(safe), while stability against sliding was 2.205 and roll was 1.815 with the safety number which was greater than 1.5 (safe). It can be concluded that there taining wall planis stable.
PENGARUH PENGGANTIAN PASIR LUMAJANG DENGAN PASIR ERUPSI GUNUNG KELUD TERHADAP KUALITAS MORTAR Nawir Rasidi; Diana Ningrum
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 1, No 1 (2016)
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v1i1.643

Abstract

Mortar serves to increase the resilience of the bond and the bond with a constituent part of this part of the construction. Mortar strength depends on the cohesion of the cement paste to aggregate the fine particles. This study use traditional testing methods for analyzing the compressive strength marshall mortar with a variation of 0%, 50% and 100%, the age of 7 days, 14 days, and 28 using the composition 1pc: 3PS, 1pc: 4Ps, and 1pc: 6ps. Making the test object to the composition of the test object 5 0% for sand Lumajang, 50% sand and Kelud Lumajang, and 100% sand Kelud. Implementation phases include testing of materials, namely water, cement, and sand. Pengujan mortar composition 1pc: 3PS, 1pc: 4Ps, and 1pc: 6 Ps age of 28 days, the mean value obtained Lumajang sand 307,20kg / cm², 257,60kg / cm² and 96.80 kg / cm², sand Lumajang and kelud of 338 , 40kg / cm², 124,80kg / cm², and 60,80kg / cm², and the use of sand kelud 212.00 kg / cm², 151.20 kg / cm², and 41.60 kg / cm². While the water absorption at 28 days average composition 1pc: 3pasir Lumajang by 1.29%, sand Lumajang and kelud of 1.85%, and sand kelud by 1.64%. Composition 1pc: 4 by 1.62% Lumajang sand, sand and sand kelud Lumajang by 3.44% and amounted to 3.15% kelud sand. KomPsisi 1pc: 6 amounted to 2.96% Lumajang sand, sand Lumajang and kelud by 4.68% and amounted to 5.49% kelud sand.
PEMBAGIAN ZONA PENANGANAN BANJIR SEBAGAI EVALUASI KAPASITAS DRAINASE KOTA LABUAN BAJO Denik Denik; Dian Noorvy Khaerudin
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 1, No 1 (2016)
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v1i1.644

Abstract

The rate of development of storage capacity drainage channels are often not as fast as the rain water runoff caused by land use change. Macro drainage system as the primary drainage system is a system of channels that accommodate and drain water from a rain water catchment area, this qualifies as rivers and canals which are generally used in planning the return period of between 5 to 10 years with a detailed topography measurements. Komodo in general, with the total area is 121 980 ha, nearly 40% of the topography between 0-100 m above sea level (m asl). Approximately 54% of the area is at an elevation of 100 to 500 m above sea level, while the remainder is at an elevation of 500 m above sea level up to 1000 m above sea level. City Topography Labuan Bajo including hilly. Ground elevation ranging from ± 0.00 m above sea level (m asl) up to ± 525 m above sea level. With conditions like this it is given form an effective drainage network for hilly areas in the district such as Komodo, Labuan Bajo is the return period discharge plan 10 m3 / sec. Parameter election is based on the amount of discharge runoff plan out to the primary drainage channel and on the basis of a comparison of the length of time the concentration of the root canal and the slope of the land.
PENGARUH KONSENTRASI GULA LARUTAN MOLASES TERHADAP KADAR ETANOL PADA PROSES FERMENTASI Agus Rochani; Susy Yuniningsih; Zuhdi Ma'sum
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 1, No 1 (2016)
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v1i1.645

Abstract

The imbalance between supply and fuel needs led to the impact of the energy crisis. Bioethanol is an alternative fuel that has the potential to replace fossil fuels. Bioethanol is the result of fermentation of biomass ethanol with the aid of microorganisms. This study aims to determine the ethanol content is influenced by the concentration of the solution of sugar molasses, as well as determine how much sugar concentration in the most optimal fermentation of molasses (molasses). The fermentation process varied with the concentration of 12%, 14%, 16%, 18%, 19% and 20%. To determine levels of ethanol produced, then the measurement or test the ethanol content in each variable concentrations of sugar substrate by means of pycnometer. The results showed that the concentration of the solution of sugar molasses effect on levels of ethanol produced. The highest ethanol content obtained at a concentration of 18% sugar, amounting to 13.85%. Lowest ethanol content obtained at a concentration of 12% sugar, namely 4.56%, while the sugar concentration of 14% - 18% ethanol continues to increase in a row to 6.4%, 12%, and 13.85%. Cereviseae Saccharomyces fermentation activity declined at a concentration of 19% sugar and 20%, ethanol is converted decreased to 11.82% and 8.07%.
INOVASI ALAT BIOREAKTOR DENGAN SISTEM FLUIDISASI DALAM PEMBUATAN ETANOL DARI MOLASSES Amsar Amsar; Wahyu Diah Proborini; Fenny Suryanti
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 1, No 1 (2016)
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v1i1.646

Abstract

The fermentation process is generally carried out in the community is in a batch, but the process is the concentration of ethanol produced is quite low because of accumulated ethanol production will poison the microorganisms in the fermentation process. Ethanol productivity of batch processes is very small because it takes a long time of about 72 hours. High and low ethanol content is determined in part by sugar levels in the substrate. Sugar compounds are required as a carbon source of energy yeasts. This study aims to determine the maximum results from the opening of flow rate and flow of glucose concentration on the effectiveness of the process and the quality of ethanol. The method used is fluidized semikontinyu fermentation system using Saccharomyces cerevisiae immobilized with the order. The results showed that the fermentation process fluidization semikontinyu that teramobilisasi with that carried out during the first day with a sugar concentration of 15%, 20%, 25%, 30% derived ethanol content of 5%, 8%, 13%, 15% at a flow rate of 30 openings °. Ethanol is also obtained by 8%, 12%, 18%, 20% in opening a flow rate of 60°. Ethanol is also obtained by 8%, 13%, 19%, 21% in opening a flow rate of 90°.
PEMBUATAN ASAP CAIR DARI TEMPURUNG KELAPA,TONGKOL JAGUNG, DAN BAMBU MENGGUNAKAN PROSES SLOW PYROLYSIS Karolus Boromeus Reta; Sinar Abrina Anggraini
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 1, No 1 (2016)
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v1i1.647

Abstract

Penelitian ini bertujuan memanfaatkan limbah pertanian (tempurung kelapa, tongkol jagung dan bambu) menjadikan asap cair grade 3. Asap cair grade 3 bermanfaat sebagai anti bakteri dan anti oksidan (bahan pengawet alternatif yang alami). Proses slow pirolisis limbah tempurung kelapa tongkol jagung dan bamboo pada suhu 300 oC menghasilkan asap cair grade 3, terdanarang. Asap cair grade 3 yang mempunyai rendaman tertinggi yaitu tongkol jagung 48 %, tempurung kelapa 40 % dan bambu 36 %. Dari hasil  GC-MS dapat diketahui bahwa kandungan senyawa phenol yang  paling tertinggi yaitu tongkol jagung dengan konsentrasi 6.73 %  pada waktu retensi 4.502 menit dan senyawa acetic acid yang  paling tertinggi yaitu tongkol jagung dengan konsentrasi 84.45 % pada waktu retensi 2.240 menit.
UJI STABILITAS CHECK DAM KEDUNGREJO 15 DI KALI KONTO KECAMATAN PUJON KABUPATEN MALANG Suhudi Suhudi; ester ria dwi kandari
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 1, No 2 (2016)
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v1i2.648

Abstract

Cactment area Kali Konto is the part of up stream Brantas which is located in Pujon Malang It’s 233 km2. The main building water that’s located at DAS Brantas Hulu is Selorejo reservoir. It’s ethnic age reach 100 years but will be reduced because the silting up of reservoir. It’s caused of the big erotion and sedimentation in the water arrest area. The erotion happened more than the limit of tolerance from the land erotion whichs is permitted. Kali Konto is the biggest sedimentation contributor for Selorejo Reservoir. One of the action in case erotion and sedimentation in the river is by building Sediment Controller Building or generally mentioned by Check Dam. From the calculation stated that the dimension of check dam will be made of river stone like the elevation of top spillway peak dam main in 862 m with effectife height amount of 4 m and foundation depth amount of 2 m, the width of mercu pelimpah main dam amount of 3 m with discharge in the repeatance periode is 50 years amount of 1186,79 m3/sec, the controlling height amount of 1 m. The analytic of building stability check dam is in the safe condition, it is 1,27 1,2 (required).
ANALISIS DAN PEMETAAN DAERAH KRITIS RAWAN BENCANA WILAYAH UPTD SDA TUREN KABUPATEN MALANG Galih Damar Pandulu
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 1, No 2 (2016)
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v1i2.649

Abstract

Disasters in the area of Technical Implementation Unit Office of Turen, especially those caused by water damage requires the prevention and treatment of good and effective. In an effort to manage critical areas and disaster-prone river in the region, especially in the working area, in need of maps and data critical areas and prone to such disasters. The expected result is the availability of critical distribution maps and disaster-prone areas related to water resources in the area of Regional Technical Implementation Unit Turen Malang. The analytical methods used are scoring Analysis disaster-prone areas and analysis of the level of vulnerability and the risk of flooding. Results of research on critical land get there in the districts and sub-districts Poncokusumo Wajak, while the level of vulnerability to flooding obtain flood prone land area of 137.36 km2 and is very prone to flood an area of 3:35 km2.

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