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Porositas Dan Sorptivity Beton OPC Dan Beton OPC POFA Dengan Perbaikan Air Gambut Sebagai Air Pencampur Menggunakan Kapur Tohor Di Lingkungan Gambut Sormin, Lina S; Olivia, Monita; Syaputra, Edy
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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The use of peat water is often used as concrete mixing water in areas difficult to obtain clean water. Peat water containing a low pH is not recommended as concrete mixing water because it can reduce the quality of concrete. Mineral materials such as Palm Oil Fuel Ash (POFA) used in the concrete mix to increase the density of the resulting. This study aims to assess the physical properties such as porosity and water sorptivity concrete using peat as concrete mixing water. Type of cement used in the concrete mixture is OPC and OPC POFA 10%. Peat water for the research came from Rimbo Panjang, Kampar, Riau and POFA derived from Perhentian Raja, Kampar, Riau. Research results show that concrete repair using quicklime 40 milligrams for peat water soaked peat environment has a high porosity and sorptivity.Keywords: OPC, Palm Oil Fuel Ash (POFA), peat water, quicklime
Kuat Tekan Paving Block Geopolimer Abu Sawit (Palm Oil Fuel Ash) Dengan Perawatan Suhu Ruang Syarif, Harriad Akbar; Olivia, Monita; Saputra, Edy
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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Geopolymer is an environmentally friendly alternative construction material made from the process of activating the base material rich in silicon (Si) and aluminum (Al) with a solutionof alkaline activators. In this study, using the ashes of oil derived from Dumai, Riau Province as the base material of geopolymer. With the eco-friendly construction material that theproduct is made with reference to a standard paving blocks. This study is based on variations of modulus activator, dosage activators, and the addition of cement type 1 (OrdinaryPortland Cement) for the treatment of room temperature (setting time) on the composition of the mixture. This study aims to determine the amount of use of the base material (palm oil fuelash) from the comparison alkaline activator with palm oil fuel ash used in paving block geopolymer based treatment time and its influence on the physical properties of the geopolymer paving block. The results showed that the strong increase in modulus of paving blocks are influenced by activators in combination with the addition of cement to each composition.Keywords: palm oil fuel ash, geopolymer, paving block, modulus activator, dosage activator
Kuat Tekan Dan Kuat Lentur Beton Geopolimer Abu Terbang Hybrid Dengan Pecampuran Portland Composite Cement Noviandri, Rizky; Olivia, Monita; Sitompul, Iskandar Romey
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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The use of Portland Composite Cement (PCC) as a substitute material in fly ash geopolymer hybrid concrete will accelerate the geopolymer reaction since the geopolymer becomes more reactive. In this study, the fly ash geopolymer hybrid concrete used 12 M NaOH concentration, modulus of silicate (Ms) 2.5 and 15% PCC cement, and extra water 80 kg/m3. Geopolymer hybrid concrete treatment were carried out at room temperature. Tests carried out were compressive strength and flexural strength at 7 and 28 days. The results showed the compressive strength of geopolymer hybrid concrete against PCC concrete had a decreasing percentage of difference from 34,54% (6,68 MPa) at 7 days to 20,01% (4,49 MPa) at 28 days. Then, the percentage of flexural strength difference decreased from 31.09% (1.25 MPa) at seven days to 28.55% (1.39 MPa) at 28 days. It was concluded that fly ash did not significantly affect the split tensile strength of geopolymer hybrid concrete 28 at days.The results showed that the compressive strength and flexural strength of the geopolymer hybrid concrete were lower than these of PCC concrete.Keywords : Mechanical properties, hybrid geopolymer concrete, PCC, room temperature.
Kuat Tekan Dan Sorptivity Beton Dengan Serbuk Kulit Kerang (Anadara Granosa) Reny Akmalia; Monita Olivia; Alfian Kamaldi
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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This study examines the compressive strength and sorptivity of the concrete using powdered shells as a partial replacement of cement. Powder derived from the shells of shell types Anadara granosa who experience burning in the furnace brick and filtered using a sieve # 200. Variations shells used is 4% due to a variation of the optimum. After the trial manufacture of test specimens was performed to compare the nature of the powder concrete with normal concrete shells, then soaking for 7, 28 and 91 days. The results showed the strength of concrete shells powder is lower than normal concrete, concrete Sorptivity powdered seashells higher than normal concrete. From the results show the physical properties of concrete dust shells higher than normal concrete. This happens because the powder concrete shells have more pores and has a lower workability.Keywords: powder shells, Anadara granosa, compressive strength, sorptivity
Kuat Tekan Beton OPC Abu Terbang (Fly Ash) Di Air Gambut Arnef Frenki; 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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This study examines the mechanical properties of Ordinary Portland Cement (OPC) concrete and OPC concrete containing fly ash immersed in peat water. Fly ash as a pozzolanic material with high silica content is used as substitution of 25% of the volume of cement. The designed concrete strength was 21 MPa. Concrete Specimens was made in the cylinder mould with a diameter of 105 mm and height of 210 mm. The samples were first cured in fresh water for 28 days and then they were immersed in peat water for 7 and 28 days. The mechanical properties was evaluated by measuring the compressive strength of the concrete specimens. The total number of test specimens was 9 pieces, with 3 test specimens for each variation and testing age, which is without immersion, 7 and 28 days immersion in peat water. The pH value of peat water was ranging from 3.0 to 5.0. The result showed that the compressive strength of OPC concrete immersed in peat water decreased while the compressive strength of OPC concrete containing fly ash was dependent of how long the specimen was cured in peat water. The compressive strength of OPC-21 decreased by 7.08% at 28 days immersion in peat water while the compressive strength of OPC-FA-21 showed an increase of 8.81%.Keywords: Compressive strength, OPC, Fly Ash (FA), peat water
Nilai Slump, Porositas Dan Kuat Tekan Beton OPC Dan OPC RHA Untuk Aplikasi Di Lingkungan Gambut Alfadh, Mhd Raja; Kamaldi, Alfian; Olivia, Monita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5, No 1 (2018): Wisuda April Tahun 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The aggressive environment, especially the peat environment contains many chemicals that can unravel the elements in the concrete, causing damage to the concrete. This study examines the strength and physical properties of OPC (Ordinary Portland Cement) concrete and OPC RHA (Rice Husk Ash) concrete exposed in peat environments. RHA as one of pozzolan with high silica is used as a replacement of cement with the substitution of 5% and 10%. This concrete are tested mechanically and physically such as compressive strength and porosity tests after soaking in peat canals for 28 days, in addition to fresh concrete tests such as workability. The concrete strength of the planned concrete is K-250. The peat water used as a test immersion medium has a pH of 3.5-4.5. The results of fresh concrete testing show that the addition of RHA makes the workability decreases. The lowest workability was obtained from a mix containing 10% RHA. The OPC concrete has the highest compressive strength of 20,28 MPa. Porosity of OPC RHA concrete decreased with increase in curing time. The lowest porosity is shown by OPC RHA 10% concrete. Based on the results of the test, it is concluded that the replacement of cement by RHA, has a positive effect on all physical properties of concrete.Keywords: Peat Environtment, OPC, RHA, Compressive strength, Physical Properties
STUDI PARAMETRIK BETON CAMPURAN REMAH KARET DAN FABA (FLY ASH BOTTOM ASH) UNTUK PERKERASAN KAKU Monita Olivia; Muhammad Rizky; Gunawan Wibisono
Jurnal Ilmiah Teknik Sipil Jurnal Ilmiah Teknik Sipil, Vol. 24, No. 2, Juli 2020
Publisher : Department of Civil Engineering, Udayana University

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Abstract

Penumpukan ban bekas di alam terus mengalami peningkatan karena pemanfaatan ban bekas yang masih sedikit sehingga potensi terjadinya pencemaran lingkungan sangat tinggi karena ban bekas tidak dapat terurai secara alami. Salah satu limbah industri hasil pembakaran batu bara yang termasuk berbahaya bagi lingkungan adalah abu terbang abu dasar atau fly ash bottom ash (FABA) pada industri pembangkit listrik. Kedua limbah tersebut dapat digunakan untuk memperbaiki kinerja perkerasan kaku (rigid pavement) untuk jalan sehingga memiliki kekakuan dan durabilitas tinggi. Pada penelitian ini diteliti parameter yang berpengaruh terhadap kuat lentur optimum pada perkerasan kaku menggunakan campuran remah karet dan FABA sesuai spesifikasi pekerjaan jalan dan jembatan tahun 2018. Beberapa campuran beton dikaji dalam penelitian ini memiliki variasi fas atau faktor air semen (0,30; 0,32; 0,34), remah karet (0%, 5%, 10%), FABA (0%, 5%, 10%) dan perlakuan terhadap karet (disaring, tidak disaring dan serat). Campuran beton kontrol adalah campuran dengan menggunakan semen PCC. Persentase remah karet adalah berdasarkan berat agregat halus, dan persentase FABA sesuai dengan berat semen. Hasil pengujian pada umur 28 hari menunjukkan bahwa campuran dengan variasi faktor air semen = 0,30, remah karet = 5%, FABA = 10% menghasilkan kuat tekan dan kuat lentur optimum masing-masing 32.07 MPa dan 4.62 MPa. Kedua nilai tersebut telah memenuhi persyaratan dalam spesifikasi umum pekerjaan jalan dan jembatan. Berdasarkan studi parametrik dapat diperoleh campuran yang tepat antara remah karet dan FABA sehingga dapat meningkatkan sifat mekanik beton dan berpotensi sebagai bahan perkerasan kaku.
Kuat Tekan Dan Sifat Fisik Beton OPC, OPC POFA, Dan PCC Menggunakan Air Gambut Sebagai Air Pencampur Beton Redol Sianturi; Monita Olivia; Edy Saputra
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The use of peat water is often used as concrete mixing water in areas difficult to obtain clean water. Peat water containing a low pH is not recommended as concrete mixing water because it can reduce the quality of concrete. Mineral materials such as Palm Oil Fuel Ash (POFA) used in the concrete mix to increase the density and strength of the resulting. This study aims to assess the compressive strength and physical properties such as porosity and water sorptivity concrete using peat as concrete mixing water. Type of cement used in the concrete mixture is OPC, PCC, and OPC POFA 10%. Peat water for the research came from Rimbo Panjang, Kampar and POFA derived from PKS GAS, Kandis. Research results show that the peat water can still be used to mix concrete is still above the minimum strength of 90% of the normal compressive strength.Keywords: OPC, PCC, palm oil fuel ash(POFA), peat water
Kuat Tekan Dan Perubahan Berat Beton OPC Dan OPC POFA Dengan Menggunakan Air Gambut Sebagai Air Pencampur Di Lahan Gambut Gustina Gultom; Ismediyanto Ismediyanto; 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 study the compressive strength and mass loss of OPC concrete and concrete combine of OPC +10% palm oil fuel ash (POFA). The specimens cured in peat environment until 28 days. Compressive strength of concrete OPC G higher than OPC POFA G because reaction of pozzolanic make slowly calcium silicat. Weight changes showed OPC G until 28 days increased because acid can make expantions so volume of concrete increased. Concrete OPC G +10% POFA decreased because reaction pozzolanic can less acid for concrete.Keywords: Durability, OPC, POFA, peat environment.
Kuat Tekan Dan Perubahan Berat Mortar Abu Sekam Padi (Rice Husk Ash) Di Lingkungan Air Gambut Ednor, Meirisa; Olivia, Monita; Sitompul, Iskandar Romey
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Peat water potentially damage and attack calcium, reduce the strength and accelerate corrosion of mortar and caused significant degradation in the long term. This study aims to determine resistance acid to cement with using added materials were exposed to acidic water. Two types of hardened cementing materials, such as Ordinary Portland Cement (OPC) and Rice Husk Ash (RHA) will be soaked in regular water and peat water. Cement was replace with 15% of rice husk ash. The acid resistance of cements was test by compressive strength, sorptifity, and porosity. There was a considerable decrease in the compressive strength of mortar OPC after exposure to acid attacks from peat water. This research show mortar with rice husk ash was more resistant in peat water for 91 days.Keywords: Acid, Cement, Peat Water, Rice Husk Ash, Resistance.
Co-Authors A.A. Ketut Agung Cahyawan W Ade Anggriawan Adrianto Ahmad Afifuddin, Muhammad Ahmad Hamidi Aldi Nauri Islami, Aldi Nauri Alfadh, Mhd Raja Alfian Kamaldi Ali Imron Rusadi Aman Aman Amir Awaluddin Amsal Anwary Amun Amri Ananda, Yazid Fahmi Andi Darmawan Andrian Prasetyo Annisa Arifandita Mifshella Arief Rijaldo Fajri Arnef Frenki Asmanovita, Ririn Ayu Nofikasari Bobby Ansyari Budi Indrawan Chrisfela Wulandari Darusman Darusman Debby Mayangsari Dessy Wulan Sari Doli Patumona Ednor, Meirisa Edy Saputra Edy Saputra Edy Saputra Edy Syaputra Elen Tarisa Erwin Erwin Fadillah, M Lucky Fajri Ariefyanto Ferisma Ratu Giri Fitri Amelia Gunawan Wibisono Gunawan Wibisono Gustina Gultom Harriad Akbar Syarif, Harriad Akbar Hendra Dermawan Hendra Gunawan Hutapea, Uliarta Ika Qoriah Nursuci Ikhsan Sulaiman, Muhammad Ikrammullah, Muhammad Ilham Sordiman Ines Junita Sinuhaji Iskandar R Sitompul Iskandar Romey S Iskandar Romey Sitompul Ismeddiyanto Ismeddiyanto Ismeddiyanto, Ismeddiyanto Ismeddiyanto, Ismeddiyanto Ismeddyanto Ismeddyanto Ismediyanto Ismediyanto Ismi Siska Rahmayani Januar Fitri Jaya Alexander Pandiangan Kamaldi, Alfian Kamaldi, Alfian L, Erika Lita Darmayanti Lita Darmayanti Lora Mona Tambunan M Hari Bhakti Mardiah, Ramona Mia Qoryati Mirza Afrian Mohd. Rizki Novianto Muhammad Farhan Setyawan Muhammad Rizky Najib, Ahmad Ainun Nanda Dwi Putri, Nanda Dwi Niko Rizaldi Noviandri, Rizky Oktariyansa, Randy Pardede, Pardede Pradana, Tomy Pratama, Rudy Satriya Redol Sianturi Reni Suryanita Reny Akmalia Revina Oktaviani Ridho Rinanda Ririn Yuari Farandia RITA ANDINI Rita Yulismawati Septari, Dinda Sigit Sutikno Sopian sopian Sormin, Lina S Suhendrayatna Suhendrayatna Syaputra, Edy T, Ade Utama, Panca Setia Widya, Diah Wijaya, Miguel Felix Winda Astuti Halinda Putri Wulan Ramanda Putri Yanuari, Ramadhan Yofani, Dhea Fitra Yogie Pranata Yudhi Salman Dwi Satya Zulfario Anugrah Pratama Zulfikar Djauhari Zulfikar Djauhari Zulfikar Djauhari