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Rulli Ranastra Irawan
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Civil Engineering, Building, Construction & Architecture Education

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Efek Tipe Superplasticizer terhadap Sifat Beton Segar dan Beton Keras pada Beton Geopolimer Berbasis Fly Ash Ria Utami; Bernardinus Herbudiman; Rulli Ranastra Irawan
RekaRacana: Jurnal Teknil Sipil Vol 3, No 1: Maret 2017
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/rekaracana.v3i1.59

Abstract

ABSTRAKBeton geopolimer adalah beton tanpa semen portland dengan bahan pengikat material yang mengandung silika dan alumunium yang tinggi seperti fly ash. Silika dan alumunium pada fly ash diaktifkan oleh aktivator yaitu sodium hidroksida (NaOH) dan katalisator yaitu sodium silikat (). fly ash yang digunakan pada penelitian adalah campuran fly ash PLTU Suralaya 1 dan PLTU Suralaya 2. Penelitian dilakukan untuk mengetahui pengaruh tipe superplasticizer terhadap beton segar dan keras beton geopolimer yaitu slump flow, setting time dan kuat tekan. Superplasticizer yang digunakan adalah naphthalene, sodium glukonat dan polycarboxylate. Benda uji kuat tekan adalah kubus berukuran 5 cm x 5 cm x 5 cm sebanyak 3 buah, pengujian dilakukan pada umur beton 1, 3, 7 dan 28 hari. Hasil dari penelitian diketahui bahwa superplasticizer sodium glukonat adalah superplasticizer terbaik untuk beton geopolimer karena beton mendapatkan flow dan setting time yang lama, dengan kuat tekan yang tidak jauh berbeda dengan beton geopolimer.Kata kunci: beton geopolimer, fly ash, superplasticizer, beton segar, beton keras ABSTRACTGeopolymer concrete is a concrete without portland cement with high component silica and aluminium as the binding material such as fly ash. Silica and aluminum in fly ash is activated by sodium hydroxide (NaOH) and sodium silicate (). fly ash used in the study was mix  two steam power plant, fly ash PLTU Suralaya 1 and PLTU Suralaya 2. The study was conducted to determine the effect of type superplasticizer on fresh concrete and hardened of geopolymer concrete which is Slump flow, setting time and compressive strength. Superplasticizer used is naphthalene, sodium gluconate and polycarboxylate. Compressive strength test specimen is a cube measuring 5 cm x 5 cm x 5 cm as much as 3 pieces, testing is done on the concrete 1, 3, 7 and 28 days. The results of the study note that sodium gluconate is the best admixture for geopolymer concrete because concrete has highest flow characteristic and longer setting time, with difference of compressive strength was not significantly.Keywords: geopolimer concrete, fly ash, superplasticizer, fresh concrete, hardened concrete
Efek Kadar Polycarboxylate Ether (PCE) terhadap Sifat Mekanik Beton Geopolimer Berbasis Fly Ash Eggidyo Parudhiwa Putra; Bernardinus Herbudiman; Rulli Ranastra Irawan
RekaRacana: Jurnal Teknil Sipil Vol 2, No 4: Desember 2016
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/rekaracana.v2i4.136

Abstract

ABSTRAKPenambahan superplasticizer kedalam campuran beton geopolimer memiliki peranan penting untuk kemudahan pekerjaan. Akan tetapi, kualitas beton geopolimer tersebut harus tetap terjaga. Beton geopolimer merupakan beton tanpa semen dengan bahan pengganti semen harus berupa pengikat material yang mengandung silika dan alumunium yang tinggi seperti fly ash. Jenis fly ash yang digunakan pada penelitian yaitu fly ash Suralaya 1 dan Suralaya 2. Penelitian dilakukan untuk mengetahui pengaruh kadar superplasticizer PCE terhadap sifat mekanik beton geopolimer yaitu slump flow, nilai pantul, cepat rambat gelombang, kuat tekan, kuat tarik belah, kuat tarik lentur, dan modulus elastisitas. Kadar superplasticizer PCE yang digunakan kadar 0,5%; 1,0%; 1,5%; dan 2,0%. Hasil dari penelitian diketahui bahwa kadar superplasticizer PCE optimum adalah 0,5% sampai 1,0% untuk beton geopolimer karena beton mendapatkan flow yang paling mengalir dan mutu dari sifat mekanik beton geopolimer yang baik.Kata kunci: beton geopolimer, superplasticizer PCE, slump flow, uji destruktif, uji non-destruktif ABSTRACTThe Addition of superplasticizer into geopolimer concrete mix  has an important role to improve the workability of concrete. However, the quality of the geopolimer concrete must always be maintenad. Geopolomer concrete is a concrete without cement where it can be replaced with binder material with high silica and alumunium content such as fly ash. The variant of fly ash used in this study is fly ash Suralaya 1 and Suralaya 2. The study was conducted to determine the effect of dosage PCE superplasticizer on mechanical properties of geopolymer concrete which is slump flow, rebound number, pulse velocity, compressive strength, splitting, flexural, and modulus elasticity. Dosage of PCE superplasticizer used 0,5%; 1,0%; 1,5%; dan 2,0%. The results of the study can be conclusion that the optimum dosage is 0,5-1,0% which best flow and best mechanical properties.Keywords: geopolimer concrete, superplasticizer PCE, slump flow, destructive test, nondestructive test
Ketahanan Beton Geopolimer Berbasis Fly Ash terhadap Sulfat dan Klorida Rafli Andaru Ikomudin; Bernardinus Herbudiman; Rulli Ranastra Irawan
RekaRacana: Jurnal Teknil Sipil Vol 2, No 4: Desember 2016
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/rekaracana.v2i4.33

Abstract

ABSTRAKKetahanan beton dalam lingkungan yang korosif sangat diperlukan, beton geopolimer memiliki ketahanan yang lebih baik dari beton biasa. Beton geopolimer dalam penelitian ini menggunakan campuran fly ash Suralaya 1 dan Suralaya 2 sebagai material pengganti semen. Penelitian dilakukan untuk mengetahui ketahanan beton geopolimer berbasis fly ash terhadap zat kimia berupa asam sulfat (H2SO4) dan asam klorida (HCl) dengan konsentrasi sebesar 10%. Parameter yang diamati adalah kuat tekan, cepat rambat gelombang dan pH yang dilakukan pada umur beton 7, 14, 21 dan 28 hari. Benda uji kuat tekan dan pH menggunakan kubus 5 cm × 5 cm × 5 cm sebanyak 3 buah dan benda uji cepat rambat gelombang menggunakan silinder berukuran 10 cm × 20 cm. Hasil penelitian menunjukan bahwa konsentrasi larutan sebesar 10% yang digunakan untuk perendaman beton geopolimer berbasis fly ash terlalu tinggi sehingga ketahanan beton geopolimer tersebut mengalami penurunan yang signifikan baik dari segi kekuatan, kepadatan, kandungan dan kondisi fisik.Kata kunci: beton geopolimer, fly ash, kuat tekan, ketahanan ABSTRACTResistance concrete in corrosive environments is necessary, geopolymer concrete have better resistance than ordinary concrete. Geopolymer concrete in this study using mixing fly ash Suralaya 1 and Suralaya 2 as a cement replacement material. The study was conducted to determine the resistance of geopolymer concrete based on fly ash use chemicals such as sulfuric acid (H2SO4) and hydrochloric acid (HCl) at a concentration of 10%. The observed parameter is compressive strength, fast propagation and pH that was made on the concrete 7, 14 , 21 and 28 days. The test specimen compressive strength and pH using a cube of 5 cm × 5 cm × 5 cm 3 pieces and fast propagation of the test specimen using cilinder measuring 10 cm × 20 cm. The results of the study showing that the concentration of 10% were used for soaking of fly ash-based geopolymer concrete is too high so that the resistance of geopolymer concrete is experiencing a significant decline both in terms of strength, density, content and physical condition.Keywords: geopolimer concrete, fly ash, compressive strength, resistance
MANAJEMEN KESELAMATAN DAN KESEHATAN KERJA PROYEK UJI COBA SKALA PENUH JEMBATAN CABLE STAYED UNTUK LALU LINTAS RINGAN Setyo Hardono; Nazib Faizal; Rulli Ranastra Irawan
Jurnal Jalan-Jembatan Vol 26 No 1 (2009)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

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

Abstract

An accident occurred on site caused by human error and technical error. To reduce and insure this, we have to perform Sistem Manajemen Keselamatan dan Kesehatan Kerja (SMK3). SMK3 similar to Health, Safety, and Environment Procedure (HSE Procedure).In this paper, we describe about SMK3 system in Cable Stayed Project in Sukabumi, Jawa Barat, its contain organization structure, risk assesment, personal protection equipment, emergency response, regulation of health and environment, medical regulation, and safety regulation. Keywords : safety, health, accident, work, risk assessment, emergency response
Co-Authors Bernardinus Herbudiman Eggidyo Parudhiwa Putra I Gusti Bagus Wiksuana Nazib Faizal Rafli Andaru Ikomudin Setyo Hardono