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Porositas Beton Blended Abu Terbang (Fly Ash) Sebagai Substitusi Semen Di Air Gambut Mardiah, Ramona; Kamaldi, Alfian; Olivia, Monita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

One of the environmental conditions that can affect the quality of concrete is peat water. In this study an alternative was carried out to improve the durability of concrete in peat environments using pozzolanic material, one of them is fly ash. Fly ash has pozzolanic properties with fine particle size and can react with lime and water so as to produce material that has binding ability. This research studied the porosity of Ordinary Portland Cement (OPC) containing 25% of fly ash immersed in peat water. Fly ash was used as a cement substitutive. The cylinder concrete strength of the specimen at 28 days were 15, 21 and 29 MPa. The specimens were cured first in fresh water for 28 days and then they were immersed in peat water for 7 and 28 days. The porosity of OPC-FA-15, OPC-FA-21, and OPC-FA-29 immersed in peat water for 28 days were 16.10%, 12.16%, and 11.62% lower than that of immersed in fresh water. Moreover, higher concrete quality would result lower porosity value. Based on the results of the tests it is concluded that the replacement of 25% cement by fly ash for the three concrete grades has better physical properties with immersion in peat water. Keywords : Concrete, fly ash, peat water, porosity
Densitas, Nilai Slump, Dan Kuat Tekan Beton OPC Dan OPC POFA Dengan Campuran Air Gambut Terpapar Di Lingkungan Gambut Fadillah, M Lucky; Ismeddiyanto, Ismeddiyanto; Olivia, Monita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

This research study aimed to test the density of fresh concrete, slump value and compressive strength of concrete using OPC cement and concrete with composition of 90%OPC+10%POFA (palm oil fuel ash). That concretes mixed with peat water. pH of peat water used ranges from 3.0 to 4.0. These specimens are cast in situ. Direct specimen exposed and soaked for 28 days in the peat canal. OPC concrete that mixed with peat water generate density values were small. An increase in the value of the slump of OPC concrete mixed with peat water compared to the controling OPC. As for concrete of 90%OPC+10%POFA slump value decreases. Compressive strength of OPC concrete and concrete of 90%OPC+10%POFA were soaked for 28 days in the peat showed relatively similar results compared to the normal condition.Keywords: OPC, palm oil fuel ash (POFA), peat water, peat area
Studi Parametrik Mortar Geopolimer Hybrid Abu Sawit (Palm Oil Fuel Ash/POFA) Yanuari, Ramadhan; Ikrammullah, Muhammad; Septari, Dinda; Wijaya, Miguel Felix; Olivia, Monita
Rekayasa Sipil Vol 14, No 2 (2020)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2020.014.02.1

Abstract

In this study, the Palm Oil Fuel Ash (POFA) was used as a raw material for making geopolymer mortars that uses a combination of sodium hydroxide (NaOH) and sodium silicate (Na2SiO3). The purpose of this study was to determine the effect of various parameters on the compressive strength of mortars. The parameters involved were namely modulus of activator ratio (Ms 1-3), the molarity of NaOH (10-16M), curing temperature (28-110ºC), type of POFA particle processing (oven-dried, passed the #200 sieve, burned in a brick kiln, burned at 800ºC), rest periods of 3 and 5 days. Based on the parametric study, it was found the optimum mixture with the highest compressive strength consisted of NaOH 14M, Ms ratio of 2.5, curing temperature of 100OC, a rest period of 5 days, particles sieved using #200 sieve and had 15% PCC content. 
Ketahanan Mortar Di Lingkungan Asam Dengan Berbagai Tipe Semen Hutapea, Uliarta; Olivia, Monita; Sitompul, Iskandar Romey
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

This research study the compressive strength, porosity, weight changes, visual inspection and acidic penetration of mortar OPC cement, mortar PCC cement, and mortar with made by combine of OPC+10% Palm Oil Fuel Ash (POFA). The object test submerge in aquadest, sulfuric acid (H2SO4) with pH 4-5, and peat water. This research result show that the compressive strength increased along with increasing of mortar OPC, mortar PCC and mortar with made by combine of OPC+10% Palm Oil Fuel Ash (POFA) lifes which submerged in aquadest. The compressive strength more decreased, however in mortar PCC cement and mortar with made by combine of OPC+10% POFA have increasing. The porosity test, mortar with made by combine of OPC+10% POFA showed bigger value than mortar OPC and PCC cement. Weigh changes occur with mortar PCC cement when submerged in sulfuric acid and peat water inclined decrease.The mortar PCC cement weight inclined constant. The mortar with made by combine of OPC+10% POFA showed some decreasing but inclined constant. Visual inspection of mortar change become yellow colored when it submerged in peat water. Acid penetration which used phenolphthalein solution showed that mortar OPC cement at 91st day life had onrush by acid effect submerged in sulfuric acid and peat water while the mortar PCC cement and mortar with made by combine of POFA showed more constant condition.   Keyword: OPC, PCC, palm oil fuel ash (POFA), sulfuric acid (H2SO4), peat water,  aquadest, compressive strength, porosity, weight changes, visual inspection and acidic penetration
Kuat Tekan Dan Porositas Beton Semen OPC, PCC, Dan OPC POFA Di Lingkungan Gambut Pradana, Tomy; Olivia, Monita; Sitompul, Iskandar Romey
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

This research study the compressive strength and porosity of concrete OPC cement, concrete PCC cement, and concrete with made by combine of OPC+10% palm oil fuel ash (POFA) cement. The specimens cured in distilled water for 28 days. Then specimens were immersed ini peat environment until 28 days. This research result show there was an increase of compression strength of the concrete with made combine of OPC+10% palm oil fuel ash (POFA) cement and concrete PCC cement after 28 days immersed in peat environment. The percentage of porosity for of concerete OPC cement immersed in peat environment increased compared to the speciemens immeresed in distilled water. For concrete with combine of OPC+10% palm oil fuel ash (POFA) cement and concerete PCC cement decreased after immersed in peat environment. The test result revealed that durability of OPC+10%POFA concrete and PCC concrete in peat environment the well of OPC concrete.Keywords: OPC, PCC, palm oil fuel ash(POFA), peat area
Perilaku Kekuatan Mortar Tahan Api Dengan Bahan Tambah Gula Aren Putri, Nanda Dwi; Olivia, Monita; Djauhari, Zulfikar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

This study discusses the behavior of fire-resistant mortar strength with the addition of palm sugar. The purpose of the addition of palm sugar is to increase the fireproof mortar strength at high temperatures. Palm sugar content variation used was 0,10%, 0,30%, and 0,50% of the weight of the cement. The test object made in this study were 48 units with details of 12 pieces of mortar OPC+0,10% palm sugar, 12 pieces of mortar OPC+0,30% palm sugar, 12 pieces of mortar OPC+0,50% palm sugar, and 12 OPC mortar normal as a control. Mortar burned at a temperature of 250○C, 500○C, and 750○C for 3 h at 28 days and then tested compressive strength. The results of research and compressive strength before being burned at a temperature of 250○C showed that normal OPC has the highest compressive strength. But at a temperature of 500○C and 750○C a compressive strength of palm sugar mortarOPC+0,10% higher than normal OPC.Keywords: Mortar fire- resistant, palm sugar, OPC, compressive strength,
Karakteristik Mortar Geopolimer Abu Sawit Dengan Variasi Modulus Aktivator Halinda Putri, Winda Astuti; Olivia, Monita; Darmayanti, Lita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Geopolymer is an environmentally friendly alternative construction material that is made from activation of source material with rich in silicon (Si) and alumunium (Al) by alkaline activator solution. This research using palm oil ash from Riau Province as based geopolymer mortar. Properties of geopolymer mortar that was studied based variation of modulus activator, dosage activator, curing temperature, type of processing ash, and rest period. Research showed that increasing compressive strength of geopolymer mortar influenced by increasing modulus activator, dosage activator, and curing temperature with optimum condition, as well as combustion of palm oil ash in furnace, and rest period of geopolymer mortar for 3 days.  Keywords: palm oil ash, geopolymer, modulus activator, dosage activator
Sifat - Sifat Fisik Mortar Geopolimer Dengan Bahan Dasar Campuran Abu Terbang (Fly Ash) Dan Abu Sawit (Palm Oil Fuel Ash) Islami, Aldi Nauri; Olivia, Monita; Saputra, Edy
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

This research study about characteristic of physical of mortar geopolimer from blend of fly ash and palm oil fuel ash. Alkaline activator solution used to processed the activation of Silica (Si) and Alumina (Al) which implied in both types of the ash mixture from NaOH 14 M and liquid of natrium silicate (Na2SiO3). Proportion the blended fly ash and palm oil fuel ash ratios of 100:0, 25:75, 50:50, 75:25, and 0:100. Sand to blended ash by mass ratios of 2,75:1. Sampel out 5x5x5 cm on cube geopolymer. This research is used mix with the activator modulus 1,00 and 1,25, activator dosage (%Na2O) 22,5, cured at room temperature at 3 days and heat curedt 110ºC for 24 hours then cured at room temperature for 7 day. Result from this research represents compressive strength the mortar as according to variation blended ash. Compressive strength will mount as according to modulus of activator and activator dose with the correct combination blended ash.Keywords : geopolymer, fly ash, palm oil fuel ash, activator modulus, mix proportions
Variasi Molaritas Naoh Pada Stabilisasi Geopolimer Abu Terbang Dengan Tambahan Portland Composite Cement Oktariyansa, Randy; Wibisono, Gunawan; Olivia, Monita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Land as a supporting media for the establishment of structures is an important part to consider. Peat soils have a very low carrying capacity, very high compressibility and others that are not favourable for construction. This study aims to examine the strength of stabilized peat soils using fly ash geopolymers with the addition of PCC cement (Portland Composite Cement). Soil stabilization using geopolymer added ingredients as an alternative in soil improvement in construction. Cement was used from a variation of 20%, 25%, and 30% by weight of the total binder used. The alkaline activator solution used consists of a solution of Sodium Hydroxide (NaOH) and a solution of sodium silicate (Na2SiO3), NaOH concentrations used were 10 M, 12 M, and 14 M. Stabilization of peat soils with 7, 28, and 56 days treatment. It is obtained that at the age of 56 days, the compressive strength value of peat soil is 152,3 kPa, 162,55 kPa, 142,02 kPa, respectively at the NaOH concentration of 10M, 12M, 14M. The NaOH molarity influences the compressive strength of the soil stabilized with the geopolymer. The lower the water water content of the test material, the higher the compressive strength of the soil. Keywords : Stabilization, peat soils, geopolymers, fly ash, Portland Composite Cement
Kuat Tekan Beton Geopolimer Hybrid Faba Dengan Penambahan Semen PCC Yofani, Dhea Fitra; Olivia, Monita; Wibisono, Gunawan
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 1 Januari s/d Juni 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

This study investigates the effect of the alkaline/FABA ratio and the effect of extra water/FABA on FABA hybrid geopolymer concrete with aditif of portland composite cement. Treatment of geopolymer concrete is carried out at room temperature without immersion. The variations of alkali/FABA used were 0.6 and 0.65, while the variations for extra water/FABA used were 0.2 and 0.23. The results of the test show that geopolymer concrete with a variation of alkali/FABA 0.6 with a value of 18.167 Mpa, while variations of alkali/FABA 0.65 get a compressive strength of 15.568 Mpa. In the extra water/FABA 0.23 variation, the compressive strength is 15.568 Mpa, higher than the extra water/FABA 0.2 variation, which is 14.617 Mpa. Kata kunci: geopolimer, hybrid, fly ash bottom ash, portland composite cement.
Co-Authors ', Padil A.A. Ketut Agung Cahyawan W AA Sudharmawan, AA Abdurrahman, Habib Abrar Rifqi Pratama Abrar Rifqi Pratama Achmad, Fariz Ade Anggriawan Ade T Adrianto Ahmad Adrianto Ahmad Afifuddin, Muhammad Ahmad Hamidi Ainiyyah Fadhilah Aisyah Nurfakhirah Sandyna Aldi Nauri Islami, Aldi Nauri Alfadh, Mhd Raja Alfikri, Nur Ali Imron Rusadi Ali Imron Rusadi Aman Aman Aman Aman Amir Awaluddin Amsal Anwary Amun Amri Ananda, Yazid Fahmi Andi Darmawan Andrian Prasetyo Annisa Arifandita Mifshella Appriliya Destiyani Ardian Yolanda Arief Rijaldo Fajri Arif Rahman Arnef Frenki Asmanovita, Ririn Ayu Nofikasari Azzahra Aqilla Bella Yuherlina Bobby Ansyari Budi Indrawan Chrisfela Wulandari Daniel Kristanto Darusman Darusman Debby Mayangsari Dedi Futra Dessy Wulan Sari Dhea Fitra Yofani Diah Widya Dinni Yunike Jasril Doli Patumona Dwi Susanto Ednor, Meirisa Edy Saputra Edy Saputra Edy Syaputra Elen Tarisa Erika L Ermiyati Erwin Erwin ERWINA JULIANTARI, ERWINA Fadillah, M Lucky Fahri Hafisuddin Fajri Ariefyanto fakhri Fakhri, Fakhri Febriarti, Bernadeta Leni Ferisma Ratu Giri Ferry Fatnanta Fitri Amelia Fredinan Yulianda Gunawan Wibisono Gunawan Wibisono Gussyafri Gustina Gultom Habib Abdurrahman Hagus Tizia Harpian Surya Harriad Akbar Syarif, Harriad Akbar Hendra Dermawan Hutapea, Uliarta Ihsanul Muslim Ika Qoriah Nursuci Ikrammullah, Muhammad Ilham Sordiman Imam Suprayogi Ines Junita Sinuhaji Iskandar R Sitompul Iskandar Romey Sitompul Ismeddyanto Ismeddyanto Ismeddyanto, Ismeddiyanto Ismediyanto Ismediyanto Ismi Siska Rahmayani Ismi Siska Rahmayani Jamili, M Joehari Januar Fitri Jaya Alexander Pandiangan Kamaldi, Alfian Kingkin Dwi Pratiwi L, Erika Lita Darmayanti Lora Mona Tambunan M Hari Bhakti Maharani Miranda Mardiah, Ramona Marisya Wahyuna Marpaung, Horas Saut Maringan Mhd Raja Alfadh Mia Qoryati Miguel Felix Wijaya Miguel Felix Wijaya Milka Novita Manalu Mirza Afrian Mohd. Rizki Novianto Muhammad Afifuddin Muhammad Alfaridzi Adfan Muhammad Farhan Setyawan Muhammad Ikhsan Muhammad Ikhsan Sulaiman Muhammad Rizky Nanda Dwi Putri, Nanda Dwi Nelvia Adi Syafpoetri Niko Rizaldi Niko Rizaldi Niko Rizaldi Novan, Andre Noviandri, Rizky Nur Alfikri Nurdin Nurdin Nurdin Oktariyansa, Randy Pardede Pardede Pardede, Pardede Pradana, Tomy Pratama, Rudy Satriya Qoryati, Mia Rahmani, Syauqi Susana Ramadhan Yanuari Ramadhan Yanuari Randhi Saily Redol Sianturi Reni Suryanita Reny Akmalia Revina Oktaviani Rezha Yaren Rezha Yaren Ria Larici Ridho Rinanda Rijaldo, Arief Rini Safitri Ririn Yuari Farandia RITA ANDINI Rita Andini Rita Yulismawati Rizky Noviandri Rizqy Ridho Prakasa Safridatul Audah Septari, Dinda Shakila Fuadah Lubis Shelly Christina Soewignjo Agus Nugroho Sopian sopian Sormin, Lina S Sri Djuniati Suhendrayatna Suhendrayatna Surgaroni uga Sutikno, Sigit Syaputra, Edy T, Ade Tetty Marta Linda Utama, Panca Setia Wandala Adi Putra Wati, Andini Saras Wicaksono Mahestra Noegroho Widya, Diah Wijaya, Miguel Felix Winda Astuti Halinda Putri Wulan Ramanda Putri Yanuari, Ramadhan Yenita Morena Yofani, Dhea Fitra Yogie Pranata Yudhi Salman Dwi Satya Zakiyul Fuadi Zulfario Anugrah Pratama Zulfikar Djauhari Zulfikar Djauhari Zulfikar Djauhari Zulfikar Djauhari Zulfikar Djauhari