Kajian rintangan kakisan ke atas keluli bar tetulang dalam pes geopolimer
This study has been conducted to understand corrosion resistance on reinforcement bar in geopolymer. Geopolymer paste has been used as a substitute for ordinary Portland cement (OPC) concrete structures. Geopolymer paste in this study was made from a mixture of fly ash and an alkaline activator o...
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my-unimap-773142022-11-30T03:38:50Z Kajian rintangan kakisan ke atas keluli bar tetulang dalam pes geopolimer Kamarudin, Hussin, Datuk Prof. Emeritus Dr. This study has been conducted to understand corrosion resistance on reinforcement bar in geopolymer. Geopolymer paste has been used as a substitute for ordinary Portland cement (OPC) concrete structures. Geopolymer paste in this study was made from a mixture of fly ash and an alkaline activator of sodium hydroxide (NaOH) solution and sodium silicate (Na2SiO3) solution. For tests involving steel reinforcement bars, carbon steel is placed in the middle of the mixture and allowed to harden for 24 hours. Next, geopolymer paste placed in an oven for curing process for 24 hours. The temperature was 60˚C. Various tests were conducted to study the respect of geopolymer paste and study of corrosion on steel reinforcement bars in the paste. Among the tests conducted are phase analysis, type of bonding analysis, morphology analysis, water absorption test, porosity test, compressive strength test, pulse velocity test, immersion test, hardness test, electrical resistivity test, open circuit potential (OCP) measurements test and Tafel extrapolation test. For water absorption test, the percentage of water absorbed reduced from day 7 until day 90 which 4.65%, 4.27%, 4.16% and 3.81%. The percentage of porosity also reduced from 11.95%, 11.02%, 7.65% and 3.77% from day 7 until day 90. Vice versa, compressive strength value increased from day 7 until day 90 with the readings were 25.18 MPa, 26.76 MPa, 34.99 MPa and 56.50 MPa. The geopolymer electrical resistivity value at day 28 with electrode spacing 0.10 m and 0.01 mA current stated highest value of electrical resistivity with 61575 Ω.m however geopolymer at day 7 with electrode spacing 0.02 m and 0.95 mA current shows the lowest electrical resistivity with 537 Ω.m. It shows that the corrosion rate of geopolymer was low and too small. For OCP test before applying sacrificial anode cathodic protection (SACP), geopolymer stated minimum and maximum potential value with -0.120 V and 0.539 V respectively. From the tests, the corrosion rate of steel in geopolymer paste is still under controlled and located in the passive region. In the passive region, an oxide layer which is Iron (III) Oxide-Hydroxide (FeOOH) formed by the reaction between the steel, minerals and the air and protect the steel from corrosion agents. But this layer can only survive in the decades depends on the environment. The oxide layer will be destroyed if the paste or concrete cracks. Thus, the SACP method was implemented to protect the steel reinforcement bars in the geopolymer paste. Zinc anode is used as a sacrificial anode as the zinc has a higher electronegativity than iron in the electrochemical series. After running further analysis, it was found that the potential values located in the immunity region where the minimum potential value was -0.942 V and the maximum value was -0.704 V. In the immunity region, ferum (Fe) is stable and the reinforcement bar is not attacked by the corrosion. Universiti Malaysia Perlis (UniMAP) Thesis ms http://dspace.unimap.edu.my:80/xmlui/handle/123456789/77314 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77314/4/license.txt 8a4605be74aa9ea9d79846c1fba20a33 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77314/1/Page%201-24.pdf 44c0aca1095c6458d8579cbed2bab527 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77314/2/Full%20text.pdf 098bad7a2f4cdb724902464643455731 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77314/3/Declaration%20Form.pdf 4ab7eb3e705dc04b36be7fe694b01763 Universiti Malaysia Perlis (UniMAP) Corrosion resistant materials Reinforcing bars School of Materials Engineering |
| institution |
Universiti Malaysia Perlis |
| collection |
UniMAP Institutional Repository |
| language |
Malay English English English English English English English English English English English English English English English English Malay English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English English |
| advisor |
Kamarudin, Hussin, Datuk Prof. Emeritus Dr. Nik Noriman, Zulkepli, Dr. Abdul Wahab, Jusoh, Assoc. Prof. Dr. Muhammad Irwanto, Misrun, Dr. Muhammad Zaini, Ahmad, Dr. Leong Jenn, Hwai, Dr. Muzamir, Isa, Dr. Abdul Hamid, Adom, Prof. Dr. Zaliman, Sauli, Prof. Dr. Latifah Munirah, Kamarudin, Dr. Zaliman, Sauli, Prof. Dr. Muhammad Zaini, Ahmad, Dr. Syed Alwee Aljunid, Syed Junid, Prof. Dr. Abdul Hamid, Adom, Prof. Dr. Syafruddin, Hasan, Dr. Ahmad Kadri, Junoh, Dr. Afizah, Ayob, Dr. Shuhairimi, Abdullah, Dr. Hanif Suhairi, Abu Bakar, Dr. Syahida, Kamil, Dr. Ibnu Hajar, Rukunudin, Prof. Ir. Dr. Mohd Shukry, Abdul Majid, Ir. Dr. Ruslinda, A.Rahim, Dr. Mohd Khairuddin, Md Arshad, Assoc. Prof. Ir. Dr. Ali Yeon, Md. Shakaff, Prof. Dr. Vikneswaran, Vijean, Dr. Wan Khairunizam, Wan Ahmad, Assoc. Prof. Dr. Muhammad Mokhzaini, Azizan, Dr. Mohammad Kahar, Ab Wahab, Dr. Mohd. Affendi, Rojan, Dr. Fazdliel Aswad, Ibrahim, Dr. Zulkarnain, Lubis, Prof. Muhammad Shahar, Jusoh, Assoc. Prof. Dr. Md Aminul, Islam, Assoc. Prof. Dr. Shuhairimi, Abdullah, Assoc. Prof. Dr. Mohd Salleh, Din, Prof. Dato' Wira Dr. Yoshifumi, Harada, Assoc. Prof. Dr. Teh, Pei Leng, Dr. Banjuraizah, Johar, Dr. Soh, Ping Jack, Assoc. Prof. Dr. Azlin Fazlina, Osman, Dr. Muhammad Akram, Che Munaaim, Ir. Dr. Shafiqul, Islam, Assoc. Prof. Dr. Norainiza, Saud, Dr. Abd. Razak, Shaari, Prof. Dr. Mohammad Harith, Amlus, Dr. Muhammad Shahar, Jusoh, Assoc. Prof. Dr. Zarina, Zakaria, Assoc. Prof. Dr. Mohd Irfan, Mohamad Dzahir, Dr. Shahriman, Abu Bakar, Assoc. Prof. Dr. Mohd Khairuddin, Md. Arshad, Ir. Dr. Mohd Rashidi, Che Beson, Dr. Nashrul Fazli, Mohd Nasir, Dr. Siti Khadijah, Zaa'ba, Dr. Ammar, Zakaria, Dr. Wan Khairunizam, Wan Ahmad, Assoc. Prof. Dr. Mohammad Taufiq, Mustaffa, Dr. Noorina Hidayu, Jamil Yoshifumi, Harada, Assoc. Prof. Dr. Md Aminul, Islam, Assoc. Prof. Dr. Ruzelita, Ngadiran, Dr. R. Badlishah, Ahmad, Prof. Dr. Muzamir, Isa, Assoc. Prof. Dr. Supri, A. Ghani, Assoc. Prof. Dr. Haniza, Yazid, Dr. Muzamir, Isa, Assoc. Prof. Dr. Muzammil, Jusoh, Dr. Syed Idris, Syed Hassan, Prof. Dr. Paulraj, M. P., Prof. Dr. Wee, Fwen Hoon, Dr. Ibnu Hajar, Rukunudin, Prof. Ir. Dr. Yufridin, Wahab, Prof. Dr. Zainab, Hamzah, Assoc. Prof. Dr. Cheng, Ee Meng, Dr. Noorina Hidayu, Jamil Mohd Faizal, Jamlos, Assoc. Prof. Ir. Dr. Syed Alwee Aljunid, Syed Junid, Prof. Dr. Mohd Nazri, Mohd Warip, Ir. Dr. Syed Zulkarnain, Syed Idrus, Dr. Shahrul Nizam, Yaakob, Dr. Phak Len, Eh Kan, Dr. Liu, Wei Wen, Dr. Ping Jack, Soh, Dr. Wan Ahmad, Wan Omar, Dr. Liu, Wei Wen, Dr. Mohd Khairuddin, Md Arshad, Assoc. Prof. Ir. Dr. Ahmad Kadri, Junoh, Dr. Uda, Hashim, Prof. Dr. Khairul Salleh, Basaruddin, Ir. Dr. Mohd Khairuddin, Md. Arshad, Ir. Dr. Ong, Hui Lin, Assoc. Prof. Dr. Mohd Sobri, Idris, Dr. Mohd Faizal, Jamlos, Assoc. Prof. Ir. Dr. Muhd Safizal, Abdullah, Dr. Mohd Rashidi, Che Beson, Dr. Mohd Rashidi, Che Beson, Dr. Muhammad Amran, Ahmad, Dr. Soh, Ping Jack, Assoc. Prof. Dr. Siti Zuraidah, Ibrahim, Dr. Adi Anuar, Azmin, Dr. Md Aminul, Islam, Assoc. Prof. Dr. |
| topic |
Corrosion resistant materials Reinforcing bars Rubber -- Recycling Butadiene Acrylonitrile Waste rubber Data mining Educational Data Mining (EDM) Hybrid systems Wind turbines Photovoltaic power systems Air conditiong Functions of complex variables Geometric function theory Photovoltaic power generation Street lighting Solar radiation Wind power Corrosion resistant materials Electromotive force Electric power systems Short circuits Human-computer interaction Visual perception Neuroergonomics Autonomous wheelchair Movement controls Thomas-Fermi theory Cluster theory (Nuclear physics) Nuclei Nuclear surface Wireless LANs Personal area networks (Computer networks) Wireless Sensor Networks (WSN) Variational principles Quantum chromodynamics Variational Monte Carlo (VMC) Fuzzy algorithms Employees -- Rating of Hamming Hamming distance Solar energy Solar radiation Photovoltaic power systems Neural networks (Computer science) Honey Multisensor data fusion Honey origins Support Vector Machine (SVM) Wireless power transmission Resonators Power Wireless electricity Image processing Image processing -- Digital techniques Digital images Image quality Construction equipment Building materials Wall panels Carbon footprint Industrialised building system (IBS) -- Perlis Entrepreneurship Islamic sociology Islamic social entrepreneurship (ISE) Muslim social entrepreneurs (SMSE) Online social networks Internet fraud Phishing Fake profiles Auditing Technology adoption Computer-Assisted Audit Tools and Techniques (CAATTs) Ficus (Plants) Ficus (Plants) -- Malaysia Medicinal plants Ficus deltoidea Mas Cotek Herbs Tissue scaffolds Tissue engineering Pennisetum purpureum Articular cartilage Biomedical engineering Biosensors DNA Graphene Carbon nanotubes Corrosion resistant materials Electric insulators and insulation Metal oxide semiconductor field-effect transistors Silicon-on-insulator (SOI) Multisensor data fusion Natural computation Herbal teas Automatic speech recognition Speech perception Malay language Gesture Computer science -- Mathematics Human physical characteristics Wireless power transmission Power transfer Power transfer efficiency (PTE) Thermoplastic composites Cassava Starch Crosslinking (Polymerization) Thermoplastic starch (TPS) Adhesive joints Joints (Engineering) Hybrid joints Facility management Building -- Maintenance Hospital Organizational behavior Personality Organizational justice Product management Brand loyalty Marketing Medical tourism Medical tourism -- Malaysia Medical tourism industry Patient loyalty Entrepreneurship Social enterprise Sustainable Social entrepreneurship University-based new business enterprises Grounded theory Entrepreneurship Personnel management Employee retention Employees Jordan Jordan -- Hospital Biofilms Biopolymers Biodegradation Kapok husk (KH) Soy protein isolate (SPI) Niobium oxide Ceramic engineering Zirconium oxide Zirconia toughened alumina (ZTA) Wearable technology -- Antennas Global Positioning System Wireless LANs Body area networks (Electronics) Nanocomposites (Materials) Polymeric composites Polymer Bentonites Sustainable architecture Courtyards Natural ventilation Humidity -- Control Molecular imprinting Polymerization Polymer Molecularly Imprinted Polymer (MIP) Corrosion resistant materials Solder and soldering Powder metallurgy Solders Composite solder Plant metabolites Metabolites Soil moisture Crops and nitrogen Stresses Quality management Supply chain management Total quality management Cultivated mushroom Pleurotus Mushroom Bioactive compounds Anti-infective agents Antioxidants Ethnobotany Medicinal plants Solvents Magnetic induction Tomography Image reconstruction Breast -- Cancer Cancer Biosensors Myocardial infarction Biochemical markers Field-effect transistors Nanostructured materials Free space optical interconnects Free Space Optic (FSO) Telecommunication systems Optical wireless system Tissue engineering Tissue scaffolds Hydroxyapatite Starch Bone tissue scaffold Rice starch Quartz crystal microbalances Quartz crystals Piezoelectric devices Corrosion resistant materials Biosensors Image processing Computer vision Mango Harumanis Multi sensor system Electromyography Muscles Cerebrovascular disease Virtual reality (VR) Virtual reality arm rehabilitation Renewable energy sources Wind turbines Horizontal axis wind turbines Vertical axis wind turbines Wind energy Grinding and polishing Abrasives Hard disks (Computer science) Grinding stone Corrosion resistant materials Loyalty Malaysian public universities Higher education Management Personnel management Employee competitive behavior Employee engagement Employee Human activity recognition Human-machine systems User interfaces (Computer systems) Face perception Femtocells Long-Term Evolution (Telecommunications) Wireless communication systems Wireless connections Mobile cellular network Electric discharges Current transformers (Instrument transformer) Electric instrument transformers Chemical detectors Power cable Partial discharge (PD) Composite materials Ethylene Thermoplastics Elastomers Fillers (Materials) Vinyl acetate Image analysis Performance technology Lighting Hybrid Statistical Enhancement (HSE) Luminosity Current transformers (Instrument transformer) Electric instrument transformers Electric discharges Chemical detectors Partial discharge (PD) Rogowski coil (RC) Electromagnetic compatibility Electromagnetic interference Microwave detectors Absorption Agricultural wastes Sugarcane bagasse Microwave absorber Renewable energy sources Water-power Solar energy -- Hybrid systems Solar energy Hybrid systems Ocean wave Electroencephalography Amyotrophic lateral sclerosis Wheelchair Power wheelchair -- Design and construction Fracture mechanics Wheels and rails Keretapi Tanah Melayu Rolling contact fatigue (RCF) Allelopathic agents Weeds -- Control Allelochemicals Weeds -- Biological control Essences and essential oils Gait in humans Microelectromechanical systems Accelerometers Micromachining Biomass Renewable energy sources Pyrolysis Reflectometer Honeybee Microwave detectors Dielectrics Rice hulls Citric acid Leaching MIMO systems Wireless LANs Wireless communication systems Code division multiple access Wavelength division multiplexing Optical communication Optical communication Wireless communication systems Optical fiber communication Information technology Communication and technology Markov random fields Image segmentation Wireless sensor networks Radio wave propagation Precision farming Carbon nanotubes Wavelengths Antennas (Electronics) Antennas (Electronics) Wireless communication systems Millimeter waves Submillimeter waves Banks and banking Banks and banking -- Nigeria Financial risk Graphene Metallurgy Catalysis Chemical reactions Semiconductors Silicon-on-insulator technology Electric discharges Corrosion resistant materials Algebra Commutative algebra Set theory Corrosion resistant materials Cucumber mosaic virus Cucurbitaceae Plant diseases Electrochemical sensors Biosensors Biomechanics Joints -- Range of motion Footwear -- Health aspects Foot -- Movements Running Biosensors Field-effect transistors Titanium dioxide Nanocomposites (Materials) Polyethylene Graphene Graphite composites Graphite Lithium cells Electrodes Electrochemistry Electrolytes Microwave imaging Microwave imaging in medicine Reflectometer Ultra-wideband radar Business enterprises -- Southeast Asia Small business Business development companies Code division multiple access Wavelength division multiplexing Optical communications Code division multiple access Optical communications Telecommunication systems Computer algorithms Computer programming Sequential processing (Computer science) Biometric identification Palmprints Principal components analysis Wearable technology -- Antennas Electromagnetic fields Antenna radiation patterns -- Computer simulation Human physiology Substrate integrated waveguides Wave guides Business enterprises Business enterprises -- Nigeria Small business Islamic ethics Knowledge management Work ethic Financial crises Cash management Audit trails |
| spellingShingle |
Corrosion resistant materials Reinforcing bars Rubber -- Recycling Butadiene Acrylonitrile Waste rubber Data mining Educational Data Mining (EDM) Hybrid systems Wind turbines Photovoltaic power systems Air conditiong Functions of complex variables Geometric function theory Photovoltaic power generation Street lighting Solar radiation Wind power Corrosion resistant materials Electromotive force Electric power systems Short circuits Human-computer interaction Visual perception Neuroergonomics Autonomous wheelchair Movement controls Thomas-Fermi theory Cluster theory (Nuclear physics) Nuclei Nuclear surface Wireless LANs Personal area networks (Computer networks) Wireless Sensor Networks (WSN) Variational principles Quantum chromodynamics Variational Monte Carlo (VMC) Fuzzy algorithms Employees -- Rating of Hamming Hamming distance Solar energy Solar radiation Photovoltaic power systems Neural networks (Computer science) Honey Multisensor data fusion Honey origins Support Vector Machine (SVM) Wireless power transmission Resonators Power Wireless electricity Image processing Image processing -- Digital techniques Digital images Image quality Construction equipment Building materials Wall panels Carbon footprint Industrialised building system (IBS) -- Perlis Entrepreneurship Islamic sociology Islamic social entrepreneurship (ISE) Muslim social entrepreneurs (SMSE) Online social networks Internet fraud Phishing Fake profiles Auditing Technology adoption Computer-Assisted Audit Tools and Techniques (CAATTs) Ficus (Plants) Ficus (Plants) -- Malaysia Medicinal plants Ficus deltoidea Mas Cotek Herbs Tissue scaffolds Tissue engineering Pennisetum purpureum Articular cartilage Biomedical engineering Biosensors DNA Graphene Carbon nanotubes Corrosion resistant materials Electric insulators and insulation Metal oxide semiconductor field-effect transistors Silicon-on-insulator (SOI) Multisensor data fusion Natural computation Herbal teas Automatic speech recognition Speech perception Malay language Gesture Computer science -- Mathematics Human physical characteristics Wireless power transmission Power transfer Power transfer efficiency (PTE) Thermoplastic composites Cassava Starch Crosslinking (Polymerization) Thermoplastic starch (TPS) Adhesive joints Joints (Engineering) Hybrid joints Facility management Building -- Maintenance Hospital Organizational behavior Personality Organizational justice Product management Brand loyalty Marketing Medical tourism Medical tourism -- Malaysia Medical tourism industry Patient loyalty Entrepreneurship Social enterprise Sustainable Social entrepreneurship University-based new business enterprises Grounded theory Entrepreneurship Personnel management Employee retention Employees Jordan Jordan -- Hospital Biofilms Biopolymers Biodegradation Kapok husk (KH) Soy protein isolate (SPI) Niobium oxide Ceramic engineering Zirconium oxide Zirconia toughened alumina (ZTA) Wearable technology -- Antennas Global Positioning System Wireless LANs Body area networks (Electronics) Nanocomposites (Materials) Polymeric composites Polymer Bentonites Sustainable architecture Courtyards Natural ventilation Humidity -- Control Molecular imprinting Polymerization Polymer Molecularly Imprinted Polymer (MIP) Corrosion resistant materials Solder and soldering Powder metallurgy Solders Composite solder Plant metabolites Metabolites Soil moisture Crops and nitrogen Stresses Quality management Supply chain management Total quality management Cultivated mushroom Pleurotus Mushroom Bioactive compounds Anti-infective agents Antioxidants Ethnobotany Medicinal plants Solvents Magnetic induction Tomography Image reconstruction Breast -- Cancer Cancer Biosensors Myocardial infarction Biochemical markers Field-effect transistors Nanostructured materials Free space optical interconnects Free Space Optic (FSO) Telecommunication systems Optical wireless system Tissue engineering Tissue scaffolds Hydroxyapatite Starch Bone tissue scaffold Rice starch Quartz crystal microbalances Quartz crystals Piezoelectric devices Corrosion resistant materials Biosensors Image processing Computer vision Mango Harumanis Multi sensor system Electromyography Muscles Cerebrovascular disease Virtual reality (VR) Virtual reality arm rehabilitation Renewable energy sources Wind turbines Horizontal axis wind turbines Vertical axis wind turbines Wind energy Grinding and polishing Abrasives Hard disks (Computer science) Grinding stone Corrosion resistant materials Loyalty Malaysian public universities Higher education Management Personnel management Employee competitive behavior Employee engagement Employee Human activity recognition Human-machine systems User interfaces (Computer systems) Face perception Femtocells Long-Term Evolution (Telecommunications) Wireless communication systems Wireless connections Mobile cellular network Electric discharges Current transformers (Instrument transformer) Electric instrument transformers Chemical detectors Power cable Partial discharge (PD) Composite materials Ethylene Thermoplastics Elastomers Fillers (Materials) Vinyl acetate Image analysis Performance technology Lighting Hybrid Statistical Enhancement (HSE) Luminosity Current transformers (Instrument transformer) Electric instrument transformers Electric discharges Chemical detectors Partial discharge (PD) Rogowski coil (RC) Electromagnetic compatibility Electromagnetic interference Microwave detectors Absorption Agricultural wastes Sugarcane bagasse Microwave absorber Renewable energy sources Water-power Solar energy -- Hybrid systems Solar energy Hybrid systems Ocean wave Electroencephalography Amyotrophic lateral sclerosis Wheelchair Power wheelchair -- Design and construction Fracture mechanics Wheels and rails Keretapi Tanah Melayu Rolling contact fatigue (RCF) Allelopathic agents Weeds -- Control Allelochemicals Weeds -- Biological control Essences and essential oils Gait in humans Microelectromechanical systems Accelerometers Micromachining Biomass Renewable energy sources Pyrolysis Reflectometer Honeybee Microwave detectors Dielectrics Rice hulls Citric acid Leaching MIMO systems Wireless LANs Wireless communication systems Code division multiple access Wavelength division multiplexing Optical communication Optical communication Wireless communication systems Optical fiber communication Information technology Communication and technology Markov random fields Image segmentation Wireless sensor networks Radio wave propagation Precision farming Carbon nanotubes Wavelengths Antennas (Electronics) Antennas (Electronics) Wireless communication systems Millimeter waves Submillimeter waves Banks and banking Banks and banking -- Nigeria Financial risk Graphene Metallurgy Catalysis Chemical reactions Semiconductors Silicon-on-insulator technology Electric discharges Corrosion resistant materials Algebra Commutative algebra Set theory Corrosion resistant materials Cucumber mosaic virus Cucurbitaceae Plant diseases Electrochemical sensors Biosensors Biomechanics Joints -- Range of motion Footwear -- Health aspects Foot -- Movements Running Biosensors Field-effect transistors Titanium dioxide Nanocomposites (Materials) Polyethylene Graphene Graphite composites Graphite Lithium cells Electrodes Electrochemistry Electrolytes Microwave imaging Microwave imaging in medicine Reflectometer Ultra-wideband radar Business enterprises -- Southeast Asia Small business Business development companies Code division multiple access Wavelength division multiplexing Optical communications Code division multiple access Optical communications Telecommunication systems Computer algorithms Computer programming Sequential processing (Computer science) Biometric identification Palmprints Principal components analysis Wearable technology -- Antennas Electromagnetic fields Antenna radiation patterns -- Computer simulation Human physiology Substrate integrated waveguides Wave guides Business enterprises Business enterprises -- Nigeria Small business Islamic ethics Knowledge management Work ethic Financial crises Cash management Audit trails Kajian rintangan kakisan ke atas keluli bar tetulang dalam pes geopolimer |
| description |
This study has been conducted to understand corrosion resistance on reinforcement bar in
geopolymer. Geopolymer paste has been used as a substitute for ordinary Portland cement
(OPC) concrete structures. Geopolymer paste in this study was made from a mixture of fly
ash and an alkaline activator of sodium hydroxide (NaOH) solution and sodium silicate
(Na2SiO3) solution. For tests involving steel reinforcement bars, carbon steel is placed in
the middle of the mixture and allowed to harden for 24 hours. Next, geopolymer paste
placed in an oven for curing process for 24 hours. The temperature was 60˚C. Various tests
were conducted to study the respect of geopolymer paste and study of corrosion on steel
reinforcement bars in the paste. Among the tests conducted are phase analysis, type of
bonding analysis, morphology analysis, water absorption test, porosity test, compressive
strength test, pulse velocity test, immersion test, hardness test, electrical resistivity test,
open circuit potential (OCP) measurements test and Tafel extrapolation test. For water
absorption test, the percentage of water absorbed reduced from day 7 until day 90 which
4.65%, 4.27%, 4.16% and 3.81%. The percentage of porosity also reduced from 11.95%,
11.02%, 7.65% and 3.77% from day 7 until day 90. Vice versa, compressive strength value
increased from day 7 until day 90 with the readings were 25.18 MPa, 26.76 MPa, 34.99
MPa and 56.50 MPa. The geopolymer electrical resistivity value at day 28 with electrode
spacing 0.10 m and 0.01 mA current stated highest value of electrical resistivity with 61575
Ω.m however geopolymer at day 7 with electrode spacing 0.02 m and 0.95 mA current
shows the lowest electrical resistivity with 537 Ω.m. It shows that the corrosion rate of
geopolymer was low and too small. For OCP test before applying sacrificial anode
cathodic protection (SACP), geopolymer stated minimum and maximum potential value
with -0.120 V and 0.539 V respectively. From the tests, the corrosion rate of steel in
geopolymer paste is still under controlled and located in the passive region. In the passive
region, an oxide layer which is Iron (III) Oxide-Hydroxide (FeOOH) formed by the
reaction between the steel, minerals and the air and protect the steel from corrosion agents.
But this layer can only survive in the decades depends on the environment. The oxide layer
will be destroyed if the paste or concrete cracks. Thus, the SACP method was implemented
to protect the steel reinforcement bars in the geopolymer paste. Zinc anode is used as a
sacrificial anode as the zinc has a higher electronegativity than iron in the electrochemical
series. After running further analysis, it was found that the potential values located in the
immunity region where the minimum potential value was -0.942 V and the maximum value
was -0.704 V. In the immunity region, ferum (Fe) is stable and the reinforcement bar is not
attacked by the corrosion. |
| format |
Thesis |
| title |
Kajian rintangan kakisan ke atas keluli bar tetulang dalam pes geopolimer |
| title_short |
Kajian rintangan kakisan ke atas keluli bar tetulang dalam pes geopolimer |
| title_full |
Kajian rintangan kakisan ke atas keluli bar tetulang dalam pes geopolimer |
| title_fullStr |
Kajian rintangan kakisan ke atas keluli bar tetulang dalam pes geopolimer |
| title_full_unstemmed |
Kajian rintangan kakisan ke atas keluli bar tetulang dalam pes geopolimer |
| title_sort |
kajian rintangan kakisan ke atas keluli bar tetulang dalam pes geopolimer |
| granting_institution |
Universiti Malaysia Perlis (UniMAP) |
| granting_department |
School of Materials Engineering |
| url |
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