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All Journal Jurnal Penelitian Saintek Inersia : Jurnal Teknik Sipil dan Arsitektur JPTK: Jurnal Pendidikan Teknologi dan Kejuruan Jurnal Pendidikan Teknik Sipil (JPTS)
Agus Santoso
Dosen Jurusan Pendidikan Teknik Sipil dan Perencanaan FT UNY
Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Education Languange, Linguistic, Communication & Media Social Sciences Other

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PERFORMANCE OPTIMIZATION OF BEAM CONCRETE BEAMS TO INCREASE BUILDING STRUCTURE PERFORMANCE IN EARTHQUAKE AREA Agus Santoso; Slamet Widodo; Nuryadin Eko Raharjo
Jurnal Penelitian Saintek Vol 15, No 2: Oktober 2010
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6973.526 KB) | DOI: 10.21831/jps.v15i2.1756

Abstract

The paper  summarizes  the experimental  result of flexural  capacity of full scale reinforced concrete beam prepared  as a composite  members consisting  of two concrete layers  made of Hybrid Fiber Reinforced  Concrete (HFRC) and High Strength Concrete (HSC). Compressive  strength and modulus of elasticity test, splitting tensile, flexural  tensile tests conducted  to identify the important mechanical properties of both HFRC and HSC. Every mechanical properties data collected using 3 standard samples based on ASTM and SNI codes. 15 reinforced concrete beams in 150x250x2400 mm dimensions,  usedfor full  scale flexural   test of structural  RC beam.  The tests conducted  on 5 types of composite  beam: 100%, 75%, 50%, 25%, and 0% of HSC cross sectional depth, combined with HFRC for the opposite sides.The experimental results indicated that HFRC shows higher modulus elasticity compared with HSC, it was 28618,611MPafor  HFRC,  and 21790,660 MPafor HSC. All types of composite  members  and full   depth  of HFRC  shows  higher first   crack  load  capacity compared  with HSC structural reinforced  concrete  beam. The first  crack  load capacity increase ranging from 29,753%  up to 33,267%. All types of composite  members and full depth of HFRC also shows higher maximum load capacity compared with HSC structural reinforced concrete beam. The first  crack load capacity  increase ranging from  11,284% up to 16,03%. Based on the experimental  test results, it can be suggested  to apply partial depth of HSC and HFRC; 50% HSC and 50% HFRC on static determinate  RC beam.Keywords:  Composite Reinforced Concrete Beam, HFRC, HSC, Full Scale Flexural  Test
ANALISIS HOMOGENITAS SELF COMPACTING MORTAR MENGGUNAKAN SERAT POLYPROPYLENE BERDASARKAN KECEPATAN PERAMBATAN GELOMBANG ULTRASONIK (UPVM) Faqih Ma’arif; Slamet Widodo; Agus Santoso
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 7, No 2 (2011): Desember
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (718.959 KB) | DOI: 10.21831/inersia.v7i2.3681

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Nowadays, Non Destructive Tests have been applied in many qualityevaluations of existing concrete structures. One of the Non Destructive Tests (NDT)is based on Ultrasonic Pulse Velocity (UPV). The use of UPV method among othersare to estimate the strength of concrete, to detect the presence of crack, to measurethe homogeneity of concrete, the thickness of concrete slab, and also to estimate thediameter of the embedded steel reinforcement. The NDT technique will apply on thisresearch. This research used 24 cylinder test samples in four groups, which werereference cylinder (SR), cylinder-1 (S-01) with 0.5 kg/m3 of fibers, cylinder-2 (S-02)with 1.0 kg/m3 of fibers and cylinder-3 (S-03) with 1.5kg/m3 of fibers. Those cylinderswere of 150 mm in diameter and 300mm in height. The Ultrasonic Pulse Velocity(UPV) test was conducted with direct test method. The data are then analyzed usingstatistical program. The test result showed that the addition of polypropylene fibersoptimum and pulse velocity were of 1kg/m3 and 3,19km/s respectively. The increasepulse velocity transmitter higher on variation of fibers 1kg/m3 is 9,12% in comparisonto reference cylinder. The statistical test indicated that the signifinance value (2-tailed test) is homogeneity sample. This means that the ultrasonic pulse velocitymethod can used to knowing of homogeneity self compacting mortar using fibers.Keyword: Homogeneity, polypropylene, Ultrasonic pulse velocity Method
PEMANFAATAN LIMBAH TETES TEBU SEBAGAI ALTERNATIF PENGGANTI SET-RETARDER DAN WATER REDUCER UNTUK BAHAN TAMBAH BETON Agus Santoso
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 8, No 2 (2012): Desember
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (8666.104 KB) | DOI: 10.21831/inersia.v8i2.4002

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PENGARUH PUMICE BRECCIA SEBAGAI REPLACEMENT AGREGAT HALUS PADA MORTAR INSTANT TERHADAP KUAT TARIK BELAH MORTAR Khorunnisa, Agus Santoso
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 11, No 1 (2015): Mei
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (100.009 KB) | DOI: 10.21831/inersia.v11i1.9943

Abstract

ABSTRACTThis research aims to know the capacity of split tensile strength of the mortar andlightweight mortar composition effective for wall with using pumice breccia. Pumice breccia is anaggregate that has a good thermal insulation and easy to obtain. In addition, pumice breccia islightweight aggregate that resistant to earthquakes. However, pumice stone has not been usedoptimally for structural elements. This research was conducted with the experimental method. Inthis study, there were 27 specimens that used for testing the split tensile strength of mortar.Each type of mortar mixture comprised of 3 compositions used were normal mortar 1PC: 4PS,1PC: 6PS, 1PC: 8PS ; normal mortar pumice 1PC: 2PS: 2PM, 1PC: 3PS: 3PM, 1PC: 4PS: 4PM; pumice mortar 1PC: 4PM, 1PC: 6PM, 1PC: 8PM. The proportion of the mixture obtained fromthe calculation of the volume of the test object is used. Each composition of the mixture wasmade 3 specimens with cylinders 150 mm x 300 mm. The results showed that the split tensilestrength avarage of normal mortar, normal mortar pumice, and pumice mortar were 0,16 MPa,0,10 MPa and 0,12 MPa. The analysis results show that the optimum split tensile strengthoccurs in normal mortar pumice. Therefore, the effective proportion mix of mortar with usingpumice breccia is 1PC: 3PS: 3PM.Keywords: Mortar, Pumice, Split Tensile Strength
EFEK PENAMBAHAN SERAT POLYPROPOYLENE TERHADAP DAYA LEKAT DAN KUAT LENTUR PADA REHABILITASI STRUKTUR BETON DENGAN SELF-COMPACTING REPAIR MORTAR (SCRM) Agus Santoso , Slamet Widodo
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 6, No 2 (2010): Desember
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (882.045 KB) | DOI: 10.21831/inersia.v6i2.10541

Abstract

ABSTRACTIn the cases of repairing and rehabilitation work of existing concrete structures,interface bond strength between old (substrate layer), and new concrete (overlay) willbe one of the main factors that will significantly affect the quality of the strengthenedstructures. Considering its unique fresh characteristics, self-compacting concrete offersmore advantages in repairing and rehabilitation works. Effects of polypropylene fiberaddition on interface shear bond strength, and the flexural strength of bi-layer concrete(substrate and overlay) were investigated in this experimental study. In this researchworks, polypropylene fibers added at 0 kg/m3, 1 kg/m3, 2 kg/m3, and 3 kg/m3 in thefresh mix of self compacting concrete that will be used as the overlay layer. The freshcharacteristics of self-compacting concrete were investigated using slump-flow test.After 28 days of substrate layer (normal concrete) age, self-compacting concrete thatutilized as overlay layer were casted on the substrate layer. Interface bond strengththat tested using Bi-surface Direct Shear Method, and bi-layer (substrate and overlay)concrete flexural strength were investigated 28 days after the overlay layer casted.Each variant of the bond strength and flexural strength investigated using 3 standardspecimens, therefore totally 36 specimens were tested. Based on the tests results, itcan be concluded several point s as follows; (1) in the case of shear bond strength,polypropylene fiber addition lead the improvement of shear bond strength between newand old concrete. In the dosage of 0 kg/m3, 1 kg/m3, 2 kg/m3 and 3 kg/m3, the resultedshear bond strength were 1,985 MPa, 1,704 MPa, 2,519 Mpa, dan 2,489 MPa, (2)Polypropylene fiber addition also has positive effect on the flexural strength of thestrengthened concrete. Using 0 Kg/m3, 1 kg/m3, 2 kg/m3, and 3 kg/m3 ofpolypropylene fiber addition, the observed flexural strength were 4,156 MPa , 4,988MPa, 2,601 MPa, and 2,543 MPa, and (3) based on the tests results it can besuggested that 1 kg/m3 of polypropylene fiber addition is the optimum composition forthe use of polypropylene fiber reinforced self-compacting concrete as a overlay layerfor repairing, and rehabilitation of concrete structures.Keywords: Polypropylene fiber, Interface Bond Strength, Flexural Strength
PEMANFAATAN LIMBAH STYROFOAM (EXPANDED POLYSTERENE) UNTUK PEMBUATAN DINDING STRUKTURAL BETON RINGAN RAMAH LINGKUNGAN Agus Santoso, Slamet Widodo, Faqih Ma’arif.
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 7, No 1 (2011): Mei
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1070.102 KB) | DOI: 10.21831/inersia.v7i1.3701

Abstract

This research study about usage of expanded polysterene for wall structure with strengthening of net wire. Styrofoam has very light weight unit which is about 13 kg/m3 up to 15 kg/m3. Lightweight concrete from expanded polysterene is an effort of utilising it as an alternative in the structure of lightweight walls. In this research, used 12 specimens of lightweight walls which were sandwich wall reference (DSK.H1-H6) has core dimension 80mm and sandwich wall polyprophyelene fiber (DS.I1-I6) with variation 0.5kg/m3; 1.0kg/m3, 1.5kg/m3 respectively. It has core 70mm, 80mm, 90mm in dimension. The dimension of lightweight wall were ±530, 400 and 120mm. Every variant consists of 2 wall, the type of load applied were compression, tensile and flexure. The data then analyzed with quantitative descriptive method. The test result showed that the average of compressive strength and tensile splitting test of self compacting mortar using fibres 0kg/m3, 0.5kg/m3, 1.0kg/m3, 1.5kg/m3 which were  12,45MPa, 10.38MPa, 12.24MPa, 9.49MPa and were 1.54MPa, 1.28MPa, 1.41MPa and 1.08MPa respectively. The addition of polypropylene fiberswere not influence compared with reference cylinder with 0kg/m3 fibers.The composition of the addition of polypropylene fiber will optimum of 1,0kg/m3 in volume. The core and plastering effective were the results 80mm and 20 mm, that the dimensions can increase the capacity of load 6.92%. The value of the maximum load capacity of walls on sandwich styrofoam is of 22.86kN on the addition of polypropylene fibers 1.0kg/m3 in volume.
Analisis Sifat Mekanik Tulangan Beton Pasca Bakar (Sebagai Bahan Pengayaan Mata Kuliah Bahan Bangunan dan Struktur Beton) Agus Santoso
Jurnal Pendidikan Teknologi dan Kejuruan Vol 18, No 1 (2009): (Mei)
Publisher : Faculty of Engineering, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (206.936 KB) | DOI: 10.21831/jptk.v18i1.7677

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Penelitian ini bertujuan menganalisis besarnya tegangan leleh tulangan beton bertulang  yang dibakar pada suhu 6000 Celcius dan 9000 Celcius  dengan tebal lindungan beton  2 cm dan 4 cm. Diharapkan hasil penelitian ini dapat digunakan sebagai bahan pengayaan pada mata kuliah  Bahan Bangunan dan Struktur Beton. Jenis penelitian ini adalah eksperimen dan pelaksanaannya dilakukan di Laboratorium Bahan Bangunan Fakultas Teknik UNY, Laboratorium Struktur dan Laboratorium Teknik Mesin Universitas Gajah Mada. Jumlah sampel  sebanyak 15 buah. Bentuk konstruksi beton berupa balok, dengan ukuran 15 x 20 cm dengan  panjang 45 cm. Tulangan yang digunakan adalah tulangan baja polos berdiameter 10 mm dan begel diameter 6 mm sebagai bahan untuk merangkai tulangan. Analisis data menggunakan deskriptif kuantitatif dengan mencari harga reratanya. Hasil penelitian yang diperoleh antara lain besarnya tegangan leleh tulangan sebelum dilakukan pembakaran= 385,12 MPa, setelah dibakar pada suhu 6000 Celcius dengan tebal lindungan beton 2 cm  sebesar 385,25 MPa, sedangkan untuk tebal lindungan beton 4 cm sebesar 382,50 MPa. Besarnya tegangan leleh tulangan  beton setelah dilakukan pembakaran pada suhu 9000 Celcius dengan tebal lindungan beton 2 cm sebesar 374,97 MPa, sedangkan untuk tebal lindungan beton 4 cm sebesar  377,48 MPa.  Secara umum beton yang dibakar sampai dengan suhu sampai 9000 Celcius, tegangan lelehnya  masih memenuhi persyaratan, yaitu masih dalam satu kelas (SII 0136-80)dan penurunan tegangan  lelehnya sebesar 2,63%.
Analisis Degradasi Sifat Mekanik Beton yang Ditambah Superplasticizetdan Dibakar Di Atas Suhu 300 Derajat Celcius Agus Santoso
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 3, No 2 (2007): Agustus
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2175.069 KB) | DOI: 10.21831/inersia.v3i2.8325

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The aim ofthis research is to observe the transformation ofK225 concrete cube strengthafter combusted on temperatures of300, 600 and 900 degree ofCelcius. The test was conductedon the concrete age of35 days and the mix design was added by superplasticizer to slow downthe concrete formation. The additional superplasticizer will slow down the transformation ofCalciumhydroxide (Ca(OH)) into Calciumoxyde (CaD), so it will lessen the reduction ofconcretecube strength due to combustion.
Evaluasi Sistem Blok secara Daring pada Mata Pelajaran Aplikasi Perangkat Lunak dan Perencanaan Interior Gedung Kelas XI Kompetensi Keahlian Desain Pemodelan dan Informasi Bangunan di SMK Negeri 1 Sedayu Hafni Yusrina Dewi; Agus Santoso
Jurnal Pendidikan Teknik Sipil Vol 4, No 1 (2022): Juni
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jpts.v4i1.48534

Abstract

ABSTRACTThe purpose of this study was to determine the evaluation of the block system that was carried out online in the APLPIG Class XI subject of Building Modeling and Information Design Expertise Competencies at SMK Negeri 1 Sedayu. The type of research used is evaluative research with the CIPP model (Context, Input, Process, Product). The subjects of this study were 1 APLPIG Class XI teacher and 30 APLPIG Class XI students. The data collection technique used is the method of observation, questionnaires, interviews, and documentation. Data analysis used quantitative methods with descriptive statistical analysis techniques. The results of this evaluation are 1) the context of the application of the block system is in the good and quite good category; 2) block system input in good category; 3) the block system implementation process is in the good category; 4) the product of the application of the block system is categorized as quite good. The application of the block system which is carried out online in APLPIG Class XI subjects is in the category of being quite effective and can be continued, but with the help of providing motivation from the teacher to students so that learning achievement continues to increase.Keywords: Evaluation, Block system, Online  ABSTRAKTujuan dilaksanakannya penelitian ini adalah untuk mengetahui evaluasi sistem blok yang dilaksanakan secara daring pada mata pelajaran APLPIG Kelas XI Kompetensi Keahlian Desain Pemodelan dan Informasi Bangunan di SMK Negeri 1 Sedayu. Jenis penelitian yang digunakan menggunakan penelitian evaluatif dengan model CIPP (Context, Input, Process, Product). Subjek dari penelitian ini merupakan 1 Guru APLPIG Kelas XI dan 30 peserta didik Kelas XI APLPIG. Teknik pengumpulan data yang digunakan merupakan metode observasi, kuesioner, wawancara, dan dokumentasi. Analisis data yang digunakan menggunakan metode kuantitatif dengan teknik analisis statistik deskriptif. Hasil dari evaluasi ini adalah 1) konteks penerapan sistem blok masuk dalam kategori baik dan cukup baik; 2) input sistem blok dalam kategori baik; 3) proses pelaksanaan sistem blok masuk dalam kategori baik; 4) produk dari penerapan sistem blok masuk dalam kategori cukup baik. Penerapan sistem blok yang dilaksanakan secara daring pada mata pelajaran APLPIG Kelas XI masuk dalam kategori cukup efektif dan dapat dilanjutkan, namun dengan bantuan pemberian motivasi dari pendidik kepada peserta didik agar prestasi belajar terus meningkat.
Co-Authors Faqih Ma’arif Hafni Yusrina Dewi Nuryadin Eko Raharjo Slamet Widodo