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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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Perancangan Mortar Geopolimer Abu Sekam Januar Fitri; Monita Olivia; Iskandar Romey S
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 study present about geopolymer mortar with rice husk ash (RHA) as binder. Both material are used their silica element were activated by alkaline solution. Alkaline solution was prepared by combining sodium silicate and sodium hydroxide of 18 M. Compressive strength of geopolymer mortar that was studied based variation of modulus activator, dosage activator, curing time, and curing temperature. Research showed that optimum mix proportion of geopolymer mortar with Rice Husk Ash (RHA) which result the optimum compressive strength. The ratio of sodium silicate solution to sodium hydroxide solution by mass was 2.5:1. The mass ratio of alkaline solution to blended ashes was 9:10. Test specimens 5×5×5 cm cube were prepared and cured at room temperature (28ºC) for 3 days and heat-cured at 70ºC for 24 hours. The speciemens were cured at room temperature for 7 days until testing date. Result from this research represents compressive strength the mortar as according to variation molar of sodium hydroxide and used a little addition of water.Keywords: Rice Husk Ash, Geopolymer, Alkali Activator, dosage activator.
Stabilisasi Tanah Gambut Menggunakan Geopolimer Hybrid Erwin Erwin; Gunawan Wibisono; Monita Olivia
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Peat soil has high moisture content and organic content. Peat soil is stabilized to improve soil properties and increase its strength. This study examines stabilization mixtures on peat soil with geopolymers hybrid. Geopolymers are alternative substitutes for cement, made from remnants of industrial waste which rich of silica and alumina, such as fly ash, husk ash, slag and palm ash. The geopolymer bond can be activated with an activator solution. Geopolymers were added by OPC to accelerate hardening and optimize strength on the ground. The purpose of this study is to compare the compressive strength of peat soil mixed with the soil geopolymer hybrid using an Unconfined Compressive Strength (UCS) Test. This study used a different variation of the treatment that are the age of 7 days and 28 days. Binder for the mixed set of 200 kg/m3 with geopolymer materials used by 50% of the binder and the OPC which was used by 50% and 100% of the binder. The results showed that the compressive strength with hybrid geopolymer mixture tends to increase from 7 days to 28 days and the compressive strength of geopolymer hybrid is higher than peat. Based on the results of this test it is concluded that peat soil using a mixture of hybrid geopolymer could increase the value of compressive strength.Keywords: peat soil, OPC, fly ash, geopolymer hybrid, UCS
Porositas Beton Geopolimer Hybrid Faba Dengan Variasi Modulus Silikat Pada Air Gambut Ayu Nofikasari; Monita Olivia; Gunawan Wibisono
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 9 (2022): Edisi 1 Januari s/d Juni 2022
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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This study examines the value of porosity in hybrid geopolymer concrete immersed in peat water. FABA as the main ingredient for making concrete has a high silica content. The purpose of this study was to find out the modulus activator with the ratio of modulus silicate (Ms) as one of the factors affecting the porosity value of FABA hybrid geopolymer concrete immersed in peat water. This study has been done to determine the percentage of pores in the concrete by examined the characteristics of the geopolymer concrete material. The mix design of the specimens was determined by a silicate modulus ratio of 2, 2.5, and 3, 12M for the NaOH molarity, 0,65 for Na2SiO3/FABA ratio, and 0,26 for water/FABA ratio. The samples were made in the form of a cylinder concrete with diameter 105 mm and height 105 mm with a total of 24 samples. The samples were cured at room temperature for 28 days and then immersed in peat water for 28 days. The results showed that the lowest geopolymer concrete porosity was found in concrete with Ms 3, which was 11.92% and the highest was found in concrete with Ms 2, which was 14.24%.Keyword : Porosity, fly ash, geopolymer, modulus silicate, NaOH
Pengaruh Modulus Aktivator (Na2SiO3/NaOH) Terhadap Kuat Tekan Mortar Geopolimer Abu Terbang Dengan Perawatan Suhu Ruang Ali Imron Rusadi; Alfian Kamaldi; Monita Olivia
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

Geopolymer is a material made without cement mixture by utilizing waste material such as fly ash, palm ash and husk ash and other materials that are rich in silica and alumina, and activated using solution activators such as NaOH and Na2SiO3. This study examines the characteristics of fly ash and the effect of activator modulus (Ms) on the compressive strength of mortar with the treatment of room temperature. Fly ash used was sourced from PLTU Ombilin, West Sumatra. The variations of activator modulus used were Ms 1, 1.5, 2, 2.5, and 3. The mold used was cube with the size 5x5 cm. The speciments were casted and treated in the laboratory under room temperature condition. The compressive tests were performed at 7, 14, and 28 days of mortar age. The results showed that the fly ash used was included in class F in accordance with ASTM C 618. The compressive strength test showed that there was an increase in compressive strength as the test age increased in all variations of the activator modulus. The highest value of compressive strength was produced by mortar geopolymer with modulus activator 2 which was 11.2 MPa at 28 days, while the lowest compressive strength was produced by mortar with modulus activator 2.5 with difference 19.14% at age 28 day. Key words : mortar, compressive strength geopolimer mortar, room temperature, siactivator iiimodulus
Kuat Tekan Mortar Geopolimer Pofa Yang Dirawat Pada Suhu Ruang Lora Mona Tambunan; Monita Olivia; Edy Saputra
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

This research focus on study of palm oil fuel ash based geopolymer mortar which use room temperature curing condition. Amount of Portland Cement (OPC) was added to accelerate setting time of geopolymer paste. The main ingredient to make geopolymer mix use palm oil fuel ash (POFA) which contain Silica (Si) and Alumina (Al) from Dumai, Riau province activated by alkaline activator solution. Alkaline activator solution was combined by NaOH 16M and liquid of natrium silikat (Na2SiO3 ) with SiO2 to Na2O mass ratio 2,3. Alkaline activator content as 100% of total binder. Rest period of geopolymer mortar for 5 days. The geopolymer paste was cast in cube mould 50x50x50 mm. The research show the compressive strength of geopolymer mortar which addition OPC variation. This study aims that compressive strength were improved simultanesly mount of addition OPC. Keywords: geopolymer, palm oil fuel ash, room temperature, addition OPC
Kuat Tekan Dan Kuat Tarik Belah Beton OPC Dan OPC POFA Dengan Air Gambut Sebagai Air Pencampur Dan Air Perendaman Bobby Ansyari; Ismeddiyanto Ismeddiyanto; Monita Olivia
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 aim to obtain the mechanical properties of OPC and OPC POFA concrete by using peat water as mixing and curing water to simulate peat field condition. The specimens were cured for 28 days directly in peat water canal. Mechanical properties tests such as compressive and tensile strength were tested for 7 and 28 days. Results of this research at 28th days show that peat field condition was increase compressive and tensile strength of OPC concrete compared with OPC normal concrete, and results also show that using POFA as subtitution of 10% cement weight was decrease compressive and tensile strength of OPC POFA concrete compared with OPC POFA concrete in normal condition. However, the compressive and tenslie strength of OPC POFA concrete in peat field and normal condition were higher than OPC normal concrete.Keywords : Mechanical properties, OPC, POFA (palm oil fuel ash), peat water, peat field condition.
Sifat Mekanik Beton Dengan Crumb Rubber Sebagai Bahan Tambah Pada Beton Serat Perkerasan Kaku Ilham Sordiman; Monita Olivia; Zulfikar Djauhari
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

This study examines the effect of crumb rubber on the mechanical properties of rigid pavement fiber concrete as an added material to increase the flexibility of rigid pavements. The specimens were tested mechanically such as compressive strength, tensile strength and flexural strength for 7, 14 and 28 days. The results showed that optimum compressive strength occurred at a percentage of 2% crumb rubber, but for the effectiveness of using rubber waste without sacrificing the compressive strength of the plan using a percentage of 4% crumb rubber. The value of the compressive strength of concrete PCC Normal and PCC +4% crumb rubber experienced a steady increase. The value of PCC +4% split tensile strength crumb rubber showed lower results than normal PCC concrete. PCC +4% concrete flexural strength of crumb rubber has a higher value than normal PCC concrete. Based on the results of these tests it was concluded that PCC +4% concrete crumb rubber had mechanical properties on increasing compressive strength which remained stable and better flexural strength, but the tensile strength showed a decrease in normal PCC concrete. Keywords: Crumb rubber, fiber concrete, rigid pavement, PCC, mechanical properties
Kuat Tekan Mortar Geopolimer Abu Terbang Hybrid menggunakan Semen Portland Miguel Felix Wijaya; Monita Olivia*; Edy Saputra
JURNAL TEKNIK Vol. 13 No. 1 (2019): Edisi April 2019
Publisher : JURNAL TEKNIK UNILAK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/teknik.v13i1.2914

Abstract

Geopolimer hybrid dibuat dengan mengaktifkan abu terbang menggunakan alkali aktivator dan semen portland sebagai bahan pengganti sebagian abu terbang untuk perawatan pada suhu ruang. Penelitian ini betujuan untuk mengkaji kuat tekan mortar geopolimer abu terbang hybrid dengan menggunakan semen Portland, yaitu OPC (Ordinary Portland Cement) dan PCC (Portland Composite Cement). Prosedur penelitian dimulai dengan pengujian karakteristik material yang digunakan, yaitu abu terbang dan agregat halus. Abu terbang yang digunakan berasal dari PLTU Ombilin Padang, Sumatera Barat. Sedangkan, agregat halus yang digunakan berasal dari Teratak Buluh, Kampar. Larutan aktivator yang digunakan NaOH 10M dan 12M, rasio modulus (Ms) 1,5 dan 2,5. Persentase penggantian abu terbang dengan semen yang digunakan adalah 10% dan 15%. Benda uji mortar berbentuk kubus berukuran 5x5x5 cm. Pengujian yang dilakukan meliputi uji kuat tekan mortar. Pengujian kuat tekan dilakukan pada umur 7 hari dan 28 hari perawatan suhu ruang. Hasil pengujian kuat tekan didapat nilai optimum pada mortar geopolimer abu terbang hybrid adalah variasi NaOH 10M, Ms 2,5 dan penggantian sebagian abu terbang dengan semen sebesar 15% pada umur 7 hari dan 28 hari perawatan suhu ruang, yaitu sebesar 8,27 MPa dan 13,33 MPa menggunakan OPC. Sedangkan, mortar geopolimer hybrid menggunakan PCC pada umur 7 hari dan 28 hari, yaitu sebesar 6,27 MPa dan 11,47 MPa. Berdasarkan hasil pengujian tersebut disimpulkan mortar geopolimer abu terbang hybrid menggunakan Ordinary Portland Cement (OPC) memiliki kekuatan tekan yang lebih tinggi diba
Ketahanan Beton Semen Portland Composite Cement (PCC) di Lingkungan Gambut Kabupaten Bengkalis Wandala Adi Putra; Monita Olivia*; Edy Saputra
JURNAL TEKNIK Vol. 14 No. 1 (2020): Edisi April 2020
Publisher : JURNAL TEKNIK UNILAK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/teknik.v14i1.3882

Abstract

Penelitian ini membahas tentang ketahanan beton menggunakan semen PCC dengan mutu beton rencana f’cr 15 MPa, f’cr 20 MPa dan f’cr 28 MPa melalui proses perawatan menggunakan air normal selama 28 hari yang selanjutnya direndam di lingkungan air gambut dengan pH berkisar antara 3-3,80 dengan rata-rata pH 3,44 selama 120 hari di Kabupaten Bengkalis. Adapun penelitian ini memiliki tujuan untuk mengkaji kuat tekan dan porositas beton. Beton dengan menggunakan semen PCC, sampai dengan umur perendaman 120 hari di lingkungan gambut untuk beton dengan kuat tekan rencana 15 MPa, 20 MPa dan 28 MPa terjadi peningkatan kuat tekan yang signifikan yakni antara 23.4% s/d 29.8%. Terkait porositas terjadi sedikit peningkatan pada umur perendaman 28 hari di lingkungan gambut yakni berkisar 0.1-1.2%. Selanjutnya seiring bertambahnya umur perendaman, porositas semakin menurun hingga mencapai -15.1% hingga -27.5% pada umur 120 hari perendaman di lingkungan gambut. Hal ini mengindikasikan bahwa beton semakin padat. Kuat tekan mempengaruhi porositas dimana semakin besar kuat tekan maka semakin kecil porositas yang terjadi. Dari tiga jenis mutu beton rencana yang diujicobakan, maka f’cr 28 MPa dengan menggunakan semen PCC sangat disarankan untuk digunakan di lingkungan gambut.
Kuat Tekan dan Porositas Beton menggunakan Air Gambut dan Kapur Tohor untuk Konstruksi di Lingkungan Gambut Hagus Tizia; Monita Olivia*; Edy Saputra
JURNAL TEKNIK Vol. 14 No. 1 (2020): Edisi April 2020
Publisher : JURNAL TEKNIK UNILAK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/teknik.v14i1.3894

Abstract

Air gambut banyak ditemukan di daerah lahan gambut atau dataran rendah di Sumatera, khususnya di Kabupaten Bengkalis. Air gambut berwarna coklat tua kehitaman, memiliki kadar organik tinggi dan memiliki kemasaman tinggi. Pada umumnya di daerah terpencil di pulau Bengkalis dengan sumber air bersih terbatas maka air gambut sering digunakan sebagai air pencampur beton. Air gambut juga dipakai sebagai air perawatan beton, padahal karakteristik air gambut tidak memenuhi persyaratan sebagai air bersih. Pada penelitian ini dilakukan kajian kuat tekan dan porositas beton menggunakan air gambut yang belum diolah dan telah diolah dengan kapur tohor. Kapur tohor (CaO) digunakan sebanyak 0,05 g/l dan dilarutkan selama 5-10 menit sehingga menghasilkan air dengan pH 7. Beton yang direncanakan menggunakan pengikat Ordinary Portland Cement (OPC) dan Portland Composite Cement (PCC) dengan kuat tekan rencana sebesar 20 MPa pada umur 28 hari. Sebagai kontrol digunakan benda uji yang dibuat menggunakan air biasa sebagai air pencampur. Benda uji dibuat dengan air gambut yang telah diberi kapur tohor dan setelah dicetak benda uji direndam langsung di saluran air gambut di Kabupaten Bengkalis. Hasil penelitian menunjukkan bahwa kuat tekan beton OPC menggunakan air gambut-kapur tohor (OPC-K) meningkat selama umur perendaman hingga 150 hari. Sedangkan beton PCC air gambut-kapur tohor (PCC-K) terus mengalami peningkatan kuat tekan hingga umur 91 hari tetapi terjadi penurunan kekuatan hingga umur 150 hari. Beton kontrol OPC memperlihatkan penurunan kuat tekan setelah perendaman, tetapi beton kontrol PCC menunjukkan kenaikan kekuatan. Porositas beton OPC-K terus meningkat pada umur 150 hari, sedangkan pada beton PCC-K terjadi penurunan porositas yang cukup signifikan. Penggunaan air gambut dengan kapur tohor sebagai air pencampur dapat memperbaiki kuat tekan dan porositas beton OPC dan PCC yang terpapar air gambut dalam jangka panjang.
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