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All Journal HAYATI Journal of Biosciences Media Teknik Sipil Jurnal Ilmiah Teknik Sipil Jurnal Sains dan Teknologi Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Rekayasa Sipil Proceedings ACES (Annual Civil Engineering Seminar) Jurnal Teknik Sipil Jurnal Teknik Journal of the Civil Engineering Forum Jurnal Sinergitas PkM & CSR Riau Journal of Empowerment Jurnal Rekayasa Sipil Jurnal Serambi Engineering Pelita Masyarakat Journal of Applied Materials and Technology Jurnal Pemerintahan dan Kebijakan (JPK) Dinamika Lingkungan Indonesia Journal of the Civil Engineering Forum BATOBO: Jurnal Pengabdian Kepada Masyarakat
Monita Olivia
Universitas Riau
Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Mechanical Engineering Physics Public Health Social Sciences Transportation Other

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Kuat Tekan Dan Sorptivity Beton Abu Terbang Dengan Perawatan Wet-Dry Di Air Gambut Fitri Amelia; Monita Olivia; Iskandar Romey Sitompul
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

This study examines the compressive strength and sorptivity of PCC concrete and PCC-FA concrete subjected to the exposure of peat water. The specimens were treated with two different, namely static and wet-dry exposure. In the static exposure, the sample were curedcontinuously in the peat water at the age of 7 and 28 days. In the wet-dry exposure, the samples were put in the cycles of wet and dry during the curing by using peat water. Fly ashwas used to increase the compressive strength and sorptivity of concrete during wet-dry cycles immersion since the wet-dry cycle in peat water is considered as the worst environmental condition that can affect the strength of concrete. The compressive strength ofPCC (static), PCC-FA (static) and PCC-FA (wet-dry) were increased at 28 days immersion in peat water, respectively by 7.24%, 20.45% and 12.89%. The compressive strength of PCC(wet-dry) decreased at 28 days immersion in peat water by 4.31%. The sorptivity was inversely proportional to the results of compressive strength. Based on the test results, it wasconcluded that the use of fly ash in concrete that experiences a wet-dry constant state could improve the quality of concrete if immersed in peat water.Keywords : Fly ash concrete, fly ash, wet-dry cycles, peat water, PCC.
Pengaruh Variasi Penambahan Naoh Pada Kuat Tekan Mortar Geopolimer Abu Terbang Dengan Opc Sebagai Tambahan Ferisma Ratu Giri; Monita Olivia; Iskandar Romey Sitompul
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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This study investigates the effect of NaOH molarity on geopolymer mortar with Ordinary Portland Cement in addition to geopolymer mortar. The intent of using Ordinary Portland Cement is to produces hybrid geopolymer concrete which can harden without high temperatures. Mortar was treated at room temperature (20-25 0C), then testing after mortars aged 7 and 28 days. The variation of molarity of NaOH used was 10 M, 12 M, and 14 M, while the ratio of silicate modulus, Ms ( Na2SiO3 / NaOH) and the percentage of OPC added to the mixture were 2,5 and 15% of the weight of fly ash, respectively compressive test was conducted to the specimens. The results showed that mortar with 12M NaOH had a compressive strength of 15,47 MPa, while the compressive strength of specimens with 8M, 10M, 14M and 16M were 10,93 MPa, 14 MPa, 13,20 MPa and 10,67 MPa, respectively. The optimal compressive strength is obtained on addition 12M NaOH. Keywords: Compressive strength testing, geopolymer, hybrid geopolymer, mortar, NaOH molarity, silicate modulus ratio, ordinary portland cement..
Kuat Tekan Beton Pofa (Palm Oil Fuel Ash) Dengan Bahan Tambah Silica Fume Wulan Ramanda Putri; Panca Setia Utama; Monita Olivia
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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Waste from processed palm oil is increasing over time. Palm Oil Fuel Ash (POFA) from boilers can be used as a substitute for cement in concrete because it contains silica and alumina. This study examines the optimum mix of cement replacement by Palm Oil Fuel Ash (POFA) and silica fume addition to the concrete mixture. The variables used are the variation of silica fume addition (0-15%) with the control concrete is PCC concrete. The concrete will be tested for its compressive strength and porosity at the age of 7 and 28 days after curing in plain water. Based on the test result, the control concrete's compressive strength was 21,74 MPa. The highest compressive strength was the concrete mixture without POFA replacement with 15% silica fume addition, the compressive strength is 26,83 MPa. It proves the addition of silica fume in concrete increases the compressive strength. Keywords: Concrete, POFA, silica fume, compressive strength.
Kuat Tekan Dan Waktu Ikat Beton Abu Terbang Di Air Gambut Dengan Metode Statis Dan Metode Wet-Dry Zulfario Anugrah Pratama; Monita Olivia; Iskandar Romey Sitompul
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

This study examines effect of peat water to the setting time and compressive strength of PCC concrete, and PCC fly ash concrete (PCC-FA). In this study, fly ash was used to replace 25%of weight of cement. This specimen was designed to have the compressive strength of 28 MPa at 28 days. All specimens were cured with two different curing system, static and wet-drysystem. The concrete sample were cured continuously on peat water for 7 and 28 days. While on wet-dry system, the samples were cured by turns wet (soaked on peat water) and dry for 7and 28 days. Peat water had a pH value of 3.0-5.0. The results showed that the addition of fly ash was able to extend the final setting time from 113 minutes to 208 minutes. The compressive strength of PCC (static), PCC-FA (static), and PCC-FA (wet-dry) wereincreased at 28 days immersion in peat water with each increase of 7.24%, 20.45% and 12.89%, respectively. While the compressive strength of PCC concrete (wet-dry) was decreased at 28 days immersion in peat water with a decrease of 4.31%. Based on the test results, it was concluded that the wet-dry cycle adversely affected the concrete strength; however, fly ash addition in the mixture can increase the concrete resistance from the wet-drycycle.Keywords: Fly Ash Concrete, Fly Ash, Wet-Dry, Setting Time, Compressive Strength, Peat Water, PCC
Setting Time Dan Kuat Tekan Beton Pofa Dengan Tambahan Silica Fume Di Air Gambut Ines Junita Sinuhaji; Iskandar Romey Sitompul; Monita Olivia
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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As a province with the largest area of oil palm plantations in Indonesia, oil palm production in Riau continues to increase. When palm oil production increases, the residual waste of production also increases and has not been optimally utilized. This research aims to analyze characteristics of POFA (Palm Oil Fuel Ash) concrete by using additive silica fume with PCC (Portland Cement Composite) concrete as control. POFA is used as a partially substitute material of cement volume with variations 0% and 20%, which silica fume as addition material has constant levels in 10% of cement volume. In this research, the compressive strength and setting time of the concrete were tested. All variations were made and passed the curing stage for 28 days in plain water. The compressive strength test was carried using a cylindrical mold measuring 105 X 210 mm, while the setting time testing was carried out separately using the vicat tool. After the curing process, the specimens were immersed in peat water with immersion variations, namely 0.7, and 28 days. Setting time of PCC concrete is the longest binding time compared to other variations, in this research there are three variations. The final binding time of 145 minutes and the fastest final binding time, namely the variation with POFA 20% with the final binding time of 96 minutes. Concrete compressive strength was tested mechanically at 0, 7, and 28 days of peat water, while setting time was tested separately. The compressive strength plan is 20 MPa and peat water as immersion water of concrete has a pH 4.0-5.0. The results shows that the compressive strength of POFA variation concrete was higher than control concrete at 0 days of immersion with the highest compressive strength value at POFA 0% of 25,84 MPa. At 28 days of immersion, POFA 0% with silica fume was higher than the control. Increase level of POFA in mixture decrease the compressive strength to 21,18%. The lowest compressive strength than the control at POFA 20% of 25,76 MPa at 28 days. Based on the results of the test, it is concluded that the use of POFA affects the results of compressive strength and setting time. The results of the compressive strength test showed that more POFA in the concrete, the compressive strength tended to decrease at  age of 0, 7,  and 28 days. In testing the setting time, POFA has the effect of shortening the initial setting time and the final setting time. More levels of POFA decreased the setting time in this study. Keywords : Palm Oil Fuel ASh, Silica fume, PCC, Peat Water, Setting Time, Compressive Strength.
Penyisihan Kadar Logam Fe Dan Mn Pada Air Gambut Dengan Pemanfaatan Geopolimer Dari Kaolin Sebagai Adsorben Ade Anggriawan; Edy Saputra; Monita Olivia
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
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Geopolymer is kind of shyntetic compound that made by syntesizing alumino and silicate, known has similarity with zeolit. In this study eleborate that geopolymer which made by kaolin used for adsorben to remove ion Ferrum and Mangan in peat water by using adsorption process. The influence of ratio alkaline activator to kaolin and adsorbent dosage examined at constant particle size and contact time to analyzed the eficiency of removal Ferum and Mangan by using batch system. The adsorption process of geopolymer by using batch system made of kaolin as an adsorption prove that geopolymer which made by kaolin have excelence ability to removing Ferum and Mangan from peat water.Keyword: Peat water, Geopolymer, Kaolin, Ratio, Ferrum, Mangan
Porositas Beton High Volume Fly Ash (Hvfa) Di Air Gambut Ika Qoriah Nursuci; Ismeddiyanto Ismeddiyanto; Monita Olivia
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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This study aims to examine the porosity of concrete with the use of fly ash as a substitute for a large portion of cement (HVFA). Ordinary Portland Cement (OPC) specimen is used as a control of HVFA concrete. The content of pozzolanic material in HVFA concrete is 45% of fly ash. Fly Ash (FA) contained in HVFA concrete in this study had a variation of 50% by weight of cement. After the concrete was released from the mold, OPC and HVFA concrete was cured by soaking it normal water for 28 days. Then, the specimen is was removed and soaked again in peat water for ages 7 and 28 days. When concrete reached their respective ages, porosity testing was carried out on concrete. The results shared that the porosity of OPC immensed in peat water was 17.35% higher than that of immensed in normal water. The increase of porosity on OPC specimen was do the attack of acid contained in peat water which made the specimen became porous and increased its porosity value. On the other hand, HVFA specimen was more resistant to peat water. This was indicated by a decrease in the porosity value of 19.83%. HVFA specimen contained large amounts of FA, the pozzolanic FA makes concrete more resistant to the peat environment and neutralizes the impact of peat on specimen. Keywords: Porosity, fly ash (fly ash), HVFA, peat water.
Kuat Tekan Dan Porositas Beton Pcc Menggunakan Crumb Rubber Dan Abu Sekam Padi Dengan Air Gambut Sebagai Mixing Dan Curing Water Arief Rijaldo Fajri; Monita Olivia; Gunawan Wibisono
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
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This study investigates the effect of peat water used on concrete with crumb rubber and rice husk ash as a mixing and curing water. The tests carried out were compressive strength and porosity for 28 days of curing. PCC concrete and PCC with crumb rubber and rice husk ash (PCC-CR-RHA) mixed and cured by clean water as a control, while the other variation were PCC-Peat and PCC-CR-RHA-Peat that are mixed and cured by peat water. PCC-CR-RHA concrete contains 5% of crumb rubber from mass of fine aggregate and 10% of rice husk ash from mass of cement. The results showed that the average compressive strength of both PCC and PCC-CR-RHA with clean water at 28 days were 35,43 MPa, while peat concrete were 16,1% lower with value at 29,72 MPa. The porosity of the specimens with clean water were 10,4% lower than the specimens with peat water. PCC-CR-RHA concrete with peat water had 90% of compressive strength (f’c) and more durable on peat water than PCC concrete showed by porosity test. The results of tests indicated that peat water can be used for mixing and curing water on PCC-CR-RHA concrete.Keywords : Peat water, crumb rubber, rice husk ash, compressive strength, porosity, rigid pavement, peat soil
Durabilitas Mortar Geopolimer Di Air Gambut Chrisfela Wulandari; Monita Olivia; Iskandar Romey Sitompul
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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This research studies the durability of OPC mortar, geopolymer mortar based fly ash and geopolymer mortar based palm oil fuel ash in acidic environment like peat water and netral environment like aquadest. This mortars will testing by mechanics and physical behaviour likes visual inspection and compressive strength after submerged in that water at age 7, 28, 91 and 120 days. The range of pH by peat water are 4,0-4,5. Geopolymer mortar based fly ash and geopolymer mortar based palm oil fuel ash use modulus activator (Ms)= SiO2/Na2O= 1 and %Na2O = 19%. This research show that the compressive strength of geopolymer mortar based fly ash (FA) increase in peat water and aquadest immersion, whereas the compressive strength of geopolymer mortar based palm oil fuel ash (POFA) decrease because the two type of this water immersion. The compressive strength of OPC mortar increase in aquadest immersion, but decrease in peat water immersion. Visual inspection of OPC mortar and geopoymer mortar based POFA changes become brown colored in peat water immersion.Keywords: durability, OPC, fly ash, palm oil fuel ash, geopolymer, peat water, aquadest, compressive strength, pH, alkali activator, and acidic environment
Durabilitas Beton Bubuk Kulit Kerang Di Lingkungan Air Laut Elen Tarisa; Monita Olivia; Alfian Kamaldi
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
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In this study,blood clam used as cement replacement material. The specimens were cured in distilled water until 28 days. Then specimens were immersed in sodium chloride solution until 91 days. The parameters studied include compressive strength, workability, and density. These properties were compared with those of a control concrete that was made of Ordinary Portland Cement (OPC). The main parameter of this study was the proportion of waste blood clam (4% by cement weight).Keywords: blood clam, cement replacement, sodium chloride solution, compressive strength, workability, density
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