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Wiku A Krasna
Civil Engineering And Environmental Department, Engineering Faculty, Lambung Mangkurat University
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Perilaku Geser pada Keadaan Layan dan Batas Balok Beton Bertulang Berlubang Memanjang Krasna, Wiku A; Sulistyo, Djoko; Supriyadi, Bambang
Jurnal Semesta Teknika Vol 13, No 2 (2010): NOVEMBER 2010
Publisher : Jurnal Semesta Teknika

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

I cross-section of reinforced concrete reduces weight and concrete needs, but the reduction in strength is not considerably large. In addition, I section reinforced concrete beam is relatively complicated and takes much longer time for manufacturing. Another geometric cross-section which results in equivalent weight reduction with that of I cross-section concrete beam may be hollow square crosssections of reinforced concrete beams. This research was conducted to identify and compare the behavior of the shear and dynamic effects of hollow core reinforced concrete beam with an I cross-section beam that equivalent with its. The specimens being tested were four reinforced concrete beams, of 2000 mm length, consisted of a T beam with bottom flange as control beam (BK) possessing dimensions of bfa = 600 mm, bw = 125 mm, bfb = 200 mm, h = 300 mm, tf = 100 mm, and three hollow core T beams as tested beam (BB1, BB2 and BB3) possessing dimensions of bf = 600 mm, bw = 200 mm, blubang = 75 mm h = 300 mm, tf = 100 mm. Static loading was applied by means of a hydraulic jack in a four-point loading system, were. Dynamic loading test was carried out by vibrating the beams to obtain the natural frequency, where the vibrating load were produced by a mechanical vibrator. Whilst the data on the static load carrying capacity was recorded at the first crack and at each initial additional crack until the ultimate fracture, those on dynamic loading was recorded on the solid block, at the first crack and at yield. The parameters being used was the magnitude of deflection, strain of the reinforcing steel and concrete, crack pattern and natural frequency. It can be concluded that the hollow core reinforced concrete beam can be used as an alternative to I section reinforced concrete beam. It was noticed that the difference in shear load carrying capacity between control beam (BK) and hollow beam (BB) was not considerably significant, where the difference between BK (299.3 kN) and BB1 (337.6 kN) is 12.79%, that with BB2 (350, 6 kN) or 17.14%, and that with BB3 (289.4 kN) or −3.31%. The natural frequency of BK is 58.594 Hz, 15.769% larger than the natural frequency of BB3 with 49.354 Hz. The natural frequencies of tested beam decreased with the increased of damage to the beam.
Perilaku Geser pada Keadaan Layan dan Batas Balok Beton Bertulang Berlubang Memanjang Wiku A Krasna; Djoko Sulistyo; Bambang Supriyadi
Semesta Teknika Vol 13, No 2 (2010): NOVEMBER 2010
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jst.v13i2.715

Abstract

I cross-section of reinforced concrete reduces weight and concrete needs, but the reduction in strength is not considerably large. In addition, I section reinforced concrete beam is relatively complicated and takes much longer time for manufacturing. Another geometric cross-section which results in equivalent weight reduction with that of I cross-section concrete beam may be hollow square crosssections of reinforced concrete beams. This research was conducted to identify and compare the behavior of the shear and dynamic effects of hollow core reinforced concrete beam with an I cross-section beam that equivalent with its. The specimens being tested were four reinforced concrete beams, of 2000 mm length, consisted of a T beam with bottom flange as control beam (BK) possessing dimensions of bfa = 600 mm, bw = 125 mm, bfb = 200 mm, h = 300 mm, tf = 100 mm, and three hollow core T beams as tested beam (BB1, BB2 and BB3) possessing dimensions of bf = 600 mm, bw = 200 mm, blubang = 75 mm h = 300 mm, tf = 100 mm. Static loading was applied by means of a hydraulic jack in a four-point loading system, were. Dynamic loading test was carried out by vibrating the beams to obtain the natural frequency, where the vibrating load were produced by a mechanical vibrator. Whilst the data on the static load carrying capacity was recorded at the first crack and at each initial additional crack until the ultimate fracture, those on dynamic loading was recorded on the solid block, at the first crack and at yield. The parameters being used was the magnitude of deflection, strain of the reinforcing steel and concrete, crack pattern and natural frequency. It can be concluded that the hollow core reinforced concrete beam can be used as an alternative to I section reinforced concrete beam. It was noticed that the difference in shear load carrying capacity between control beam (BK) and hollow beam (BB) was not considerably significant, where the difference between BK (299.3 kN) and BB1 (337.6 kN) is 12.79%, that with BB2 (350, 6 kN) or 17.14%, and that with BB3 (289.4 kN) or −3.31%. The natural frequency of BK is 58.594 Hz, 15.769% larger than the natural frequency of BB3 with 49.354 Hz. The natural frequencies of tested beam decreased with the increased of damage to the beam.
SHEAR BEHAVIOR HOLLOW CORE REINFORCED CONCRETE BEAM Wiku A. Krasna
INFO-TEKNIK Vol 14, No 1 (2013): INFOTEKNIK VOL. 14 NO. 1 2013
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v14i1.312

Abstract

I cross-section of reinforced concrete reduce weight and concrete needs, but the reduction in strength is not too large. Based on observations I section reinforced concrete beam is quite complicated and takes much longer time for the manufacturing. Therefore another form of cross-section which is equivalent to weight reduction in I cross-section concrete beam, with hollow square cross-section of reinforced concrete beam. It is expected that hollow square cross-section of reinforced concrete has a same strength with I cross-section of reinforced concrete. So this research may provide an alternative lightweight concrete beam, efficient in materials, easy installation in the implementation of shear reinforcement, and easy in formwork manufacture. This research was conducted to identify and compare the behavior of the shear of hollow core reinforced concrete beam with an I cross-section beam that equivalent with its. This experiment is using four reinforced concrete beam length 2000 mm, a T beam with bottom flange as control beam (BK) with measurement: bfa = 600 mm, bw = 125 mm, bfb = 200 mm, h = 300 mm, tf = 100 mm and three hollow core T beam as test beam (BB1, BB2 and BB3) with measurement: bf = 600 mm, bw = 200 mm, blubang = 75 mm h = 300 mm, tf = 100 mm. This experiment is testing the static and dynamic. Static loading is performed with a four-point system load, static loads are given by the hydraulic jack. Observations on the static load carried on the first crack and at each initial crack addition until the ultimate fracture. With the parameters used is the amount of deflection, the strain of reinforcing steel and concrete, the crack pattern that has happened.From the results of the experiments can be concluded that the hollow core reinforced concrete beam can be used as an alternative to I section reinforced concrete beam. It is seen from the difference in the shear load capacity is not much different between control beam (BK) and hollow beam (BB), with the difference between BK (299.3 kN) and BB1 (337.6 kN) is 12.79%, with BB2 (350, 6 kN) or 17.14% and with BB3 (289.4 kN) or -3.31%.  
Kajian pemanfaatan agregat lokal kalimantan selatan sebagai material perancangan beton normal Irfan Prasetia; Wiku A Krasna
Buletin Profesi Insinyur Vol 3, No 2 (2020): Buletin Profesi Insinyur (Juli-Desember)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/bpi.v3i2.71

Abstract

Penelitian ini bertujuan untuk mengetahui kuat tekan beton dengan variabel agregat dan air dari beberapa lokasi kuari di Kabupaten Tanah Laut dan Kabupaten Banjar Kalimantan Selatan. Pada penelitian ini telah dilakukan pemeriksaan bahan campuran beton (baik kerikil, pasir dan air yang digunakan), pembuatan rencana campuran beton, serta hasil uji tekan sampel beton dan rekomendasi yang dapat diberikan. Pada penelitian ini menggunakan acuan pembuatan campuran beton (Job Mix) sesuai dengan Peraturan Menteri Pekerjaan Umum No. 11/PRT/M/2013 tentang Pedoman Analisis Harga Satuan Pekerjaan Bidang Pekerjaan Umum. Untuk kerikil yang diuji yaitu batu batu split Katunun, batu split gunung Martadah dan batu split gunung Awang Bangkal. Adapun air yang diuji adalah air dari sungai maluka dan awang bangkal. Adapun air PDAM juga digunakan pada sampel kontrol. Adapun faktor air semen ditetapkan sebesar 0.5 terkecuali campuran beton dengan agregat Awang Bangkal dan air PDAM yang menggunakan faktor air semen 0.4, 0.45 dan 0.5. Dari penelitian ini diketahui bahwa agregat batu gunung Martadah memberikan nilai kuat tekan yang lebih konsisten. Adapun untuk struktur beton dengan kekuatan sedang, penggunaan agregat Awang Bangkal sangat direkomendasikan. Sedangkan ketiga jenis air yang diujikan pada penelitian ini dapat digunakan dalam campuran beton.  Kata kunci: agregat lokal, campuran beton, kuat tekan beton
Co-Authors Bambang Supriyadi Bambang Supriyadi Djoko Sulistyo Djoko Sulistyo Irfan Prasetia