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Prokons: Jurnal Teknik Sipil
Published by Politeknik Negeri Malang
ISSN : 19781784     EISSN : 27148815     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Materials Science & Nanotechnology
Jurnal Teknik Sipil (PROKONS), Terbit dua kali dalam setahun. PROKONS menerbitkan artikel penelitian yaitu penelitian asli teoretis dan eksperimental yang mengeksplorasi atau mengeksploitasi ide-ide dan teknik baru di empat bidang utama: teknik struktural, geomekanik, manajemen proyek konstruksi dan teknik transportasi. Tujuan jurnal ini adalah untuk memajukan ilmu pengetahuan yang berkaitan dengan teknik sipil dan berfokus pada bangunan, infrastruktur, sistem jembatan serta pemasangannya atau konstruksi.
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 202 Documents
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KUAT TEKAN SELF COMPACTING CONCRETE MENGGUNAKAN GROUND GRANULATED BLAST FURNACE SLAG Anni Susilowati; pratikto pratikto; Dennis Yudha Praditya; Kusno Wijayanto
Prokons: Jurnal Teknik Sipil Vol. 13 No. 2 August 2019
Publisher : Jurusan Teknik Sipil, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/prokons.v13i2.195

Abstract

Self Compacting Concrete (SCC) as one type of concrete that is mostly used in building construction has good workability and can be obtained by adding filler instead of cement. Ground Granulated Blast Furnace Slag (GGBFS) has a chemical composition similar to the content in cement. Therefore, the study of the use of GGBFS was used as a partial substitute for cement in the SCC to examine the influences and quality of GGBFS on fresh concrete and to obtain SCC with the best compressive strength. This research method uses an experimental method by making SCC concrete specimens with an initial fas of 0.4 according to ACI 211.4R-93. The specimens were worked using GGBFS levels of 0%, until 80%, and using 1,4% superplasticizer, and 2% accelerator by weight of cement. The use of GGBFS at SCC can increase the value of compressive strength of about 4,27%-25,64 compared to SCC without using GGBFS. The resulted are known that GGBFS can influence compression strength. Based on the testing of fresh and hard concrete, it concluded that the best quality of SCC used 20% of GGBFS.
ANALISIS PENERAPAN SISTEM PENJADWALAN DENGAN METODE PERT PADA PROYEK KONSTRUKSI (STUDI KASUS: REHABILITASI DAN PENINGKATAN INFRASTRUKSI PASAR TRADISONAL KOTA MALANG) Faris Rizal Andardi
Prokons: Jurnal Teknik Sipil Vol 14, No 2 (2020): Agustus 2020
Publisher : Jurusan Teknik Sipil, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/prokons.v14i2.269

Abstract

PERT is a simplified software, to produce the expected project completion probability based on the duration or duration of a particular contract. In developing the PERT method a lot of research was carried out to perfect this method. The purpose of this study is to determine the overall duration of project completion, the magnitude of the project probability that can be completed in less than 170 days and more than 170 days, and the project completion time with the highest probability. Results of Analysis of Implementation of Scheduling System with PERT Method in Rehabilitation and Improvement of Traditional Market Infrastructure Projects in Malang City is the total duration of simulation results obtained 168 days faster than the 172 day plan. The probability of completing the 168 day project is 50%, while the probability of completing the 172 day project is 85.31%. The highest chance of the project being completed is 99.97%, with a duration of 181 days.
SIMULASI POLA OPERASI EMBUNG SERBAGUNA TAMBAKSARI KABUPATEN CILACAP DENGAN METODE STANDARD OPERATING RULE (SOR) Ines Epti Noniasari; Puji Utomo
Prokons: Jurnal Teknik Sipil Vol 14, No 2 (2020): Agustus 2020
Publisher : Jurusan Teknik Sipil, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/prokons.v14i2.295

Abstract

Abstract Human survival depends on water availability as water is a basic needs. As population increases, water becomes more limited. One of the ways to prevent draught is collecting water in retention basin. Tambaksari Multipurpose Retention Basin serves to provide basic water demand and irrigation water for the local community. Water availability and water demand should be equal, so a simulation of the operating patter of the retention basin is necessary to distribute water equally and determining the failure level of the retention basin in performing its task. In the present study, the retention basin operating pattern was simulated using Standard Operating Rule (SOR) method. The present study used secondary data, including population data, rainfall data, climatological data and technical data of the retention basin. The size of DAS Tambaksari is 0.41 km² while the size of the irrigated land is 12 Ha. The rainfall data was from 2008-2018 obtained from two rain stations, population data of Tambaksari Village was from 2008-2019, and the climatological data was from 2014-2019. The simulation result of the retention basin operating pattern using SOR method showed that the final collection wasn’t under minimum collection and failure happened in the operation of the retention basin for one year. . The optimal ability of the target release is 70.83% for the reliability of irrigation needs and the level of reliability for raw water needs of 58.33%. Population projection analysis to determine the population in 20 years showed that the future population of 4044 required 3.861 l/person/s of water. Irrigation demands for rice-rice-palawija planting pattern showed that irrigation intake was 11.89 l/s. Water balance determined the balance between inflow and outflow. The value for average water availability was 0.021 m³/s while total average water demand was 0.016 m³/s. therefore, the water availability in partial intake wasn’t able to meet the irrigation and basic water demands. Keywords: discharge, retention basin operation simulation, SOR
KUAT TEKAN BETON CAMPURAN GGBFS DAN FLY ASH MENGGUNAKAN RETARDER Anni Susilowati; Iqbal Yusra
Prokons: Jurnal Teknik Sipil Vol 15, No 1 (2021): Februari 2021
Publisher : Jurusan Teknik Sipil, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/prokons.v15i1.281

Abstract

Abstract One of the world's construction needs is casting in large volumes that require concrete with low hydration heat, and one of the problems is that the concrete has a setting during the casting queue. Therefore, a research was conducted on adding retarder to concrete with a mixture of GGBFS and Fly Ash. The purpose of this research was to analyze the physical and mechanical properties of concrete, the effect of adding retarder and obtain optimal retarder levels. This research used an experimental methods to make concrete specimens of 75% cement mix: GGBFS 15%: Fly Ash 10% with a water cement ratio of 0.5 using mix design SNI-03-2834-2000. Variations of the retarder added to the concrete mixture were 0%, 0.2%, 0.4%, and 0.6% by weight of cement with the Naptha RD 31 type. Analysis of the effect of the retarder used statistical regression test methods on SPSS. The results of research obtained the longest setting time in this researchwas 1890 minutes at a variation of 0.6% with a slump of 168 mm. The compressive strength of the concrete increased by 12.07% - 52.36% by using a retarder added material. Based on the research results, it was obtained that the optimum level of use of retarder in mixed concrete GGBFS and Fly Ash was 0.2% because it has the best physical and mechanical properties. Keywords: Fly Ash, GGBFS, Compressive Strength, Retarder
ANALISIS NERACA AIR PADA SUB DAERAH ALIRAN SUNGAI CODE YOGYAKARTA Alvin Pradana; Ratna Septi Hendrasari
Prokons: Jurnal Teknik Sipil Vol 15, No 1 (2021): Februari 2021
Publisher : Jurusan Teknik Sipil, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/prokons.v15i1.276

Abstract

Abstract Water is one of the sources of human life. Population growth continues to increase and results in higher utilization of water sources. This will certainly affect the availability of water in the city of Yogyakarta. Water balance is a comparison between the water availability potential and the water demand of a place in a certain period. Water balance analysis is useful for knowing the amount of excess water (surplus) or lack of water (deficit) so that water use can be managed as well as possible. The calculation was done by analyzing the 10-year rainfall data using the Thiessen Polygon method to obtain the mean rainfall value. The available debit was calculated using the F.J. Mock method. The dependable discharge was calculated with 80% reliability from the 10-year debit data. The debit data was sorted from the largest to the smallest value, so that a probability value of 80% was obtained from the interpolation of the data sequence. Water demand was calculated based on the irrigation planning standard (KP-01). The results of the study show that the average water availability in the sub-watershed of Code River Yogyakarta was 527.92lt/sec. Based on the results of the analysis, the highest water deficit occurred in the first October at 278.40 l/sec and the lowest deficit was in the second July at 73.01 l/sec. However, the availability of water in certain months was quite abundant. Therefore, it is necessary to do a special study so that water is not wasted and can be used to cover water shortages in dry months. Keywords: Water balance, Water availability, Water demand, Code river, Thiessen polygon, FJ mock
STUDI KELAYAKAN MATERIAL GUNUNG DAERAH ALIRAN SUNGAI ARAH MALANG-KOTA BATU DALAM PENGGUNAANNYA SEBAGAI SALAH SATU MATERIAL BETON Armin Naibaho; Agus Sugiarto; Purnama Dewi
Prokons: Jurnal Teknik Sipil Vol 14, No 2 (2020): Agustus 2020
Publisher : Jurusan Teknik Sipil, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/prokons.v14i2.296

Abstract

Abstract The use of the mountain seal used as a building block for concrete should be considered, based on current usage apart from being a light construction material for housing, mountain materials from these two places are used as the main aggregate material for building construction, water structures (dams), roads. and bridges located in the surrounding Malang-Kota Batu area To determine the size of the aggregate, the coarse aggregate is sieved using a vibrating sieve, while the fine aggregate is sieved by a hydraulic sieve. In the screening process, about 70% of the filtered must pass so that high efficiency and capacity can be achieved. The compressive strength test results obtained the average compressive strength value at 28 days of concrete for concrete with fine aggregate sand zone III and coarse aggregate (gravel) in the Batu City area is equivalent to 35.65 MPa. The results of the split tensile strength test showed that the average split strength value at the age of 28 days for concrete with fine aggregate sand zone III and coarse aggregate (gravel) in the Kota Batu area is equivalent to 2.51 MPa. The compressive strength value for normal concrete is 35.65 MPa, it should produce split tensile strength = 4.179 MPa according to the provisions of SNI T-15-1991-03 Article 3.2.5 (fr = 0.70√fc '). Even though the split tensile strength value obtained in the laboratory is only 2.51 MPa, this means that the quality of materials (sand and broken stone) from Batu City is not suitable for use as building materials. Because the number 2.51 MPa is relatively much smaller than the value of 4.179 MPa, it is only one of the factors outlined in the SNI T-15-1991-03 article 3.2.5. Keywords: Mountain Material, Concrete, Concrete Compressive Strength Test, Concrete Tensile Strength Test
PERBANDINGAN METODE PRELOADING DENGAN VAKUM KONSOLIDASI TANAH PADA PEMODELAN DI LABORATORIUM Ahmad Yasin Al Harits; Istiatun Istiatun
Prokons: Jurnal Teknik Sipil Vol 15, No 1 (2021): Februari 2021
Publisher : Jurusan Teknik Sipil, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/prokons.v15i1.282

Abstract

ABSTRACT This study aims to determine the parameter comparison of the magnitude of the primary reduction and consolidation time in the preloading method using PVD and vacuum method using PVD with modeling in the laboratory. The benefit of this research is that it can provide a comparison of the preloading method and the vacuum method in terms of accelerating the consolidation time as well as contributing to science in the field of soil improvement. Primary consolidation theory is used in this research. Quantitative descriptive research method with testing data collection techniques by means of modeling in the laboratory. The modeling of the vacuum method used a test tub measuring (1.2 × 0.6 × 0.9) m, the vacuum pump suction capacity of 5 Pa, the air hose as PHD and geomembrane cloth as PVD material. The preloading method with PVD uses a test tub measuring (0.8 × 0.6 × 0.9) m, preloading load in the form of bangka sand (ɣ = 1.532 t / m³) with a thickness of 10 cm and a geomembrane cloth as PVD material. In each test basin filled with soil and water with a soil volume weight of 1.3 t / m³, a ground surface height of 0.5 m and a groundwater level of 0.42 m. The results showed that with the same amount of reduction, namely 7.26 mm preloading method using PVD took 81 hours while in the vacuum method the time needed was 41 hours. Thus it can be concluded that the reduction in the vacuum method is faster than the preloading method with PVD. Keywords: Primer settelment, PVD, Vacum, consolidation time
Eksperimen Gabungan Uji Lentur dan Implementasi Teori Wheatstone Bridge untuk Mengetahui Kekuatan Lentur dan Modulus Elastisitas Material Reng Baja Ringan I Nyoman Ardika; I Nyoman Suardika
Prokons: Jurnal Teknik Sipil Vol 15, No 1 (2021): Februari 2021
Publisher : Jurusan Teknik Sipil, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/prokons.v15i1.277

Abstract

Abstract Lightweight steel battens are one of the elements roof frame structure buildings. The material that is widely used today is mild steel. To get optimal results use be lightweight steel battens can be done through a structural analysis. In the analysis structure of light steel battens, required the actual dimensions of the cross-section and strength the light steel battens. The actual dimensions of the cross sections are obtained by direct measurement, and strength is obtained through a laboratory testing process either tensile testing or bending testing. This research was conducted by combining the application of Wheatstone Bride theory and bending testing in determining the strength and modulus of elasticity of mild steel battens on eleven test samples of mild steel battens with a length of 600 mm each. The test result data is in the form of load relationship with voltage changes generated from the Wheatstone Bridge network on a multimeter reading connected to the Wheatstone Bridge network. The data processing of the result of the change in voltage test will produce strain, so that the load and strain relationship is obtained. Data analysis of load relationship with stretching and the load-stress relationship will describe the strain-stress relationship. From the results of data processing, the results of the research conducted were obtained yield stress (fy) 407.8739 MPa at 0.2% strain; allowable stress (fa) 271,916 MPa at 0.1333% strain; ultimate stress (fu) 616,094 MPa at a strain of 0.3021%; and Modulus of elasticity (Es) 203921 MPa. Keywords:Mild Steel, Strain, Wheatstonebridge, Stress
UJI KUAT TEKAN DAN KUAT TARIK BELAH PADA BETON DENGAN SERAT KAWAT NYAMUK PADA MUTU FC’ = 19,3 MPA Handika Setya Wijaya; Adrianus Tandi
Prokons: Jurnal Teknik Sipil Vol. 14 No. 1 February 2020
Publisher : Jurusan Teknik Sipil, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/prokons.v14i1.241

Abstract

Concrete is one of the construction materials that is currently widely used by the community to build buildings. This is evidenced by the large number of construction of buildings, roads, irrigation channels and other construction. Until now, Indonesian people still use a little concrete. The problem that we want to know is how the effect of adding mosquito wire fiber to compressive strength, tensile strength and elastic modulus of concrete using concrete quality fc '= 19.3 MPa. The purpose of this study is to add additional mosquito wire fiber can be used as an added component of concrete components that have high strength and good quality but are economically valuable for compressive strength, tensile strength and elastic modulus. The method used is secondary and primary data. The results of this study are compressive strength 0% = 15,839 MPa, 1% = 13,657 MPa, 3% = 10,137 MPa, 5% = 9,173 MPa, tensile strength 0% = 7,392 MPa, 1% = 8,205 MPa, 3% = 8,504 MPa, 5% = 9,038 MPa. and elastic modulus 0% = 29131,385 N / mm2, 1% = 14575.68 N / mm2, 3% = 10303,133 N / mm2, 5% = 7030,893 N / mm2. The results of this study found that the addition of mosquito wire fiber can reduce the compressive strength of concrete and modulus. While the tensile strength and modulus of elasticity increase. So that the mosquito wire is not suitable for concrete compressive strength and elastic modulus.
PEMODELAN JEMBATAN RANGKA DENGAN KOMBINASI TIPE RANGKA DITINJAU DARI LENDUTAN DAN BERAT JEMBATAN Mohammad Musthofa Al Ansyorie; Mohammad Alfin Kirom Mustofa; Madih Tahtal Firdaus Sabila; Nadia Mulia Putri
Prokons: Jurnal Teknik Sipil Vol 14, No 2 (2020): Agustus 2020
Publisher : Jurusan Teknik Sipil, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/prokons.v14i2.297

Abstract

Abstract The frame bridge structure has several types of frames, each of which has advantages in accordance with its application. Several studies have shown that the comparison between one frame type and another has the advantage of different strengths. In this study an analysis will be carried out by modeling the modified bridge structure truss type and combined with other types to obtain a structure that has the best strengths. The method used in this study is to model the bridge structure with the help of SAP2000 v20 software. The analysis process in this modeling refers to SNI 1725: 2016 concerning load on bridges, BMS (Bridge Management System) in 1992, and several related regulations. The results of modeling analysis show that the K-truss frame is the best frame by looking at the aspect ratio of the bridge, namely the ratio between deflection and weight of each type. The combination of the K-truss frame type and the warren frame type is the best combination of frame types based on the best deflection and weight values. The deflection value for this type of frame combination is -0.416 mm and the ratio value is 6.017. Keywords: modeling, truss bridge, k-truss, combine

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