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INDONESIA
Teknisia
Published by Universitas Islam Indonesia
ISSN : 08538557     EISSN : 27460185     DOI : 10.20885/teknisia
Core Subject : Engineering,
Engineering
Jurnal Teknisia terbit pertama kali pada bulan April 1996. Pada awal berdirinya, Jurnal Teknisia merupakan jurnal ilmiah berkala yang diterbitkan tiga kali setahun oleh Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia, Daerah Istimewa Yogyakarta yang berisi artikel-artikel bidang teknik sipil, teknik lingkungan, dan arsitektur.
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Articles 6 Documents
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Search results for , issue "Vol. XXIV, No. 2, November 2019" : 6 Documents clear
KUAT LENTUR PANEL DINDING BETON BUSA DENGAN LAPIS GRC DAN WIREMESH Lilis Tiyani; Iman Satyarno; Ashar Saputra
TEKNISIA Vol. XXIV, No. 2, November 2019
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknisia.vol24.iss2.art2

Abstract

Lightweight concrete is high in demand as it offers lighter specific gravity which makes the load on the structure smaller. In this research, lightweight concrete was produced by mixing water, cement, sand and foam. Besides aiming to obtain lighter specific gravity, the target of this research was also to design lightweight foam concrete with compressive strength equal to the one of commonly used materials for walls of around 3-5 MPa. However, foam concrete has relatively weaker tensile strength, that it would be inadequate when it has to hold the vertical force of the wall when it is applied as wall panels. This research was conducted to examine the flexural strength of the use of GRC coating and wiremesh for wall panels. Cylinder test was performed using tools with a size of 150 mm in diameter x 300 mm in length to analyze the modulus of elasticity at 28 days old, and three cubical test tools for each variance with a size of 50 mm x 50 mm x 50 were employed to test the tensile strength at 28 days old. A number of wall panel specimens with a thickness of 50 mm, width of 400 mm and length of 800 mm were used to measure the flexural strength. The tests performed in this research resulted in modulus of elasticity of 6856,6 MPa, tensile strength of 0,7 MPa. The flexural strength of wall panels without GRC outer layer and without wiremesh reinforcement was found at 1,5 MPa. Meanwhile, the flexural strength of the wall panel with GRC outer layer without wiremesh reinforcement was found at 4,6 MPa. Finally, the wall panel applied with GRC outer layer and wiremesh reinforcement showed a flexural strength 5,3 MPa.
PENGARUH BANTALAN KARET TERHADAP MOMEN YANG TERJADI PADA LINK SLAB BETON Andi Rahmat
TEKNISIA Vol. XXIV, No. 2, November 2019
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknisia.vol24.iss2.art3

Abstract

The use of link slab as a substitute for expansion joints is one of the innovations that can provide benefits for bridge life, user comfort, and maintenance cost efficiency. Link slab is a slab placed on the upper surface of the adjacent girder end which forms a continuous slab system with the slab deck. In the transition zone, link slab and girder are installed in hard rubber and soft rubber pads at some thick variations in each type of rubber. Moment on the link slab is obtained due to the effect of traffic load according to SNI 1725: 2016 with the condition of the link slab without and with rubber pads. The study of the use of link slab in this paper is carried out in a numerical approach on a finite element software-Abaqus. Link slab is modeled as a 3D solid model in compressive concrete variations. In this study, the addition of hard rubber pads on link slab can reduce the magnitude of moments compared to link slab without rubber pads. This is indicated by the percentage reduction moment between 39,20-83,42% on LS-1, LS-2, and LS-3 hard rubber pads with thichness 10 mm, 20 mm and 30 mm. While on link slab with soft rubber pads is found that moments are greater at the very thick pads  This is indicated by the percentage difference in moments between 198,26 – 244,58% on LS-1, LS-2, and LS-3 soft rubber pads with thickness 10 mm, 20 mm and 30 mm. This large difference is due to the effect of moment change from negative moments (initial conditions) to positive moments after the addition of soft rubber pads.
SIMULASI NUMERIK FINITE ELEMENT METHOD (FEM) UNTUK OPTIMALISASI PENAMPANG U-DITCH 2 m TERHADAP PELAKSANAAN HANDLING Malik Mushthofa
TEKNISIA Vol. XXIV, No. 2, November 2019
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknisia.vol24.iss2.art4

Abstract

Increasing of precast concrete usage in many sectors automatically spur fabricators to improve their products quality. Related to that, the application of u-ditch type 2 m domestic product, during product handling (when concrete was 7 hours old) many cracks occurs at the section. Therefore, this optimization aim to improve the product quality. In addition, this optimization also supports to increase production capacity due to the reinforcement volume. The results obtained from FEM simulation, stress distribution is more favorable in the modified cross section. Stress distribution of the section inner corner (cracks zone of existing section), turn from tension become compression and then turn again to tension. Meanwhile, modified section give different stress distribution, stress transition from compression turn back again to tension not happen here. While the evaluation due to the strain value, the modified cross section gives a smaller strain value than the existing cross section strain. In addition, this optimization results in a decrease in reinforcement volume by 10.54%.
PENGARUH SEDIMENTASI TERHADAP KAPASITAS TAMPUNGAN PADA AKHIR UMUR EFEKTIF (T50) WADUK KARIAN Dhanang Samatha Putra
TEKNISIA Vol. XXIV, No. 2, November 2019
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknisia.vol24.iss2.art5

Abstract

Karian Reservoir is one of The National Strategic Projects. Located in Lebak Regency, Banten Province, Karian Reservoir has 207.48 Mm3 effective storage, 46.4 Mm3 dead storage and 50 years lifetime.  In the dam management, one of the problems that often occurs is sedimentation. To overcome this problem, we need to know the sedimentation rate and  distribution pattern of Karian Reservoir for optimalizing the reservoir management. To predict the distribution pattern of the reservoir we use Empirical Area Reduction Methods. The findings of the study show that the sediment volume of the reservoir throughout its effective life is 86.50 Mm3, the new zero elevation is +37.2 m, the remaining dead storage is 7.62 Mm3 and the  remaining effective storage is 167.19 Mm3. This indicates that theoretically the reservoir will work well up to its effective life but the dam sedimentation management must be planned because sediment not only deposit on the dead storage but also on effectife storage.
EVALUASI BIAYA DAN WAKTU PADA PROYEK PENGGANTIAN JEMBATAN DENGAN MENGGUNAKAN METODE KONSEP NILAI HASIL Adityawan Sigit
TEKNISIA Vol. XXIV, No. 2, November 2019
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknisia.vol24.iss2.art6

Abstract

On the implementation of project, there could have been problem in performance of time and cost that caused project that had been completed not to go according to plan. Therefore, performance evaluation is needed so that project can be carried out as planned and can also evaluate of project performance. In this research, time and cost performance will be evaluate using the earned value concept method in the Project for Replacement of the Nanga Tepuai-Nanga Semangut Section Bridge. Earned Value Concept can provide information about  progress position of project time and cost performance in a certain period of time. The stages of this research begin with data collection of S-Curves, RAB, Weekly Progress Report and Financial Report. Next, determine three indicators, that is BCWS, BCWP and ACWP, which is then used to analyze the Schedule Variance, Schedule Performance Index, Cost Variance, Cost Performance Index, Estimation at Schedule, and Estimation at Completion. The result of this research showed, from time performance, in month-1 until month-6, value of SV is postitive and the value of  SPI is more than 1, which means that the project is implemented faster than plan, and in month-7 the value of SV is 0 and the value of SPI is 1, which means that the project is implemented according to the plan. About cost performance, in month-1 the value of CV is negative and the value of CPI is less than 1, which means the costs incurred for implementating more than the plan, and in month-2 until month-7 the value CV is positive and the value of CPI is more than 1, which means the costs incurred for implementating less than the plan. The best EAS value is obtained in reporting month-2, it’s 3,63 months. The best EAC value is obtained in reporting month-4, it’s Rp. 7.239.951.844,01.
KUAT LENTUR PANEL DINDING EXPANDED POLYSTYRENE DENGAN PERKUATAN KALSIUM SILIKAT DAN PENYAMBUNG GESER BAUT Bella Lutfiani Al Zakina; Ashar Saputra; Ali Awaludin
TEKNISIA Vol. XXIV, No. 2, November 2019
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknisia.vol24.iss2.art1

Abstract

Started from an innovative construction system programmed by the government to provide residential homes in 2007 that is the use of expanded polystyrene concrete as a wall construction. This type of construction provides advantages that can reduce the risk of damage in the earthquakes because it has a relatively light weight which is one of the requirements for earthquake resistant houses. For this reason, the bearing capacity of the wall panel is increased to become an earthquake resistant wall using reinforcement layers. Variations on this research are expanded polystyrene concrete panels without reinforcement, with reinforcement, and with reinforcement and bolt shear connectors. Strengthening uses a reinforcement of Calcium Silicate are Kalsi board. Testing based on SNI 03-3122-1992 (Fibrous Lightweight Concrete Panel). The results showed that the average value of the panel densities was 612,57 kg/m3, the elastic modulus was 942,37 MPa, compressive strength of 2,52 MPa and water absorption capacity of 12,11%. The highest flexural strength was obtained by the panel with kalsiboard reinforcement of 1,60 MPa. This results the addition of reinforcement layers will affect the increase in strength.

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