scholarly journals Optimization of Micro and Nano Palm Oil Fuel Ash to Determine the Carbonation Resistance of the Concrete in Accelerated Condition

Materials ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 130 ◽  
Author(s):  
Wei Le Tang ◽  
Han-Seung Lee ◽  
Vanissorn Vimonsatit ◽  
Trevor Htut ◽  
Jitendra Kumar Singh ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Palm Oil ◽  
High Performance ◽  
Palm Oil Fuel Ash ◽  
Carbonation Process ◽  
Phenolphthalein Solution ◽  
Carbonation Resistance ◽  
Fuel Ash ◽  
Carbon Dioxide Co2 ◽  
Oil Fuel

The carbonation rate of reinforced concrete is influenced by three parameters, namely temperature, relative humidity, and concentration of carbon dioxide (CO2) in the surroundings. As knowledge of the service lifespan of reinforced concrete is crucial in terms of corrosion, the carbonation process is important to study, and high-performance durable reinforced concretes can be produced to prolong the effects of corrosion. To examine carbonation resistance, accelerated carbonation testing was conducted in accordance with the standards of BS 1881-210:2013. In this study, 10–30% of micro palm oil fuel ash (mPOFA) and 0.5–1.5% of nano-POFA (nPOFA) were incorporated into concrete mixtures to determine the optimum amount for achieving the highest carbonation resistance after 28 days water curing and accelerated CO2 conditions up to 70 days of exposure. The effect of carbonation on concrete specimens with the inclusion of mPOFA and nPOFA was investigated. The carbonation depth was identified by phenolphthalein solution. The highest carbonation resistance of concrete was found after the inclusion of 10% mPOFA and 0.5% nPOFA, while the lowest carbonation resistance was found after the inclusion of 30% mPOFA and 1.5% nPOFA.

scholarly journals Chemical and Fresh State Properties of Foamed Concrete Incorporating Palm Oil Fuel Ash and Eggshell Ash as Cement Replacement

2018 ◽  
Vol 7 (4.30) ◽  
pp. 350 ◽  
Author(s):  
Sufian Kamaruddin ◽  
Wan Inn Goh ◽  
Ashfaque Ahmed Jhatial ◽  
Muhammad Tahir Lakhiar
Keyword(s):  
Palm Oil ◽  
Waste Materials ◽  
Palm Oil Fuel Ash ◽  
Cement Replacement ◽  
Fuel Ash ◽  
Fresh State ◽  
Foamed Concrete ◽  
Chemical Analysis Result ◽  
Carbon Dioxide Co2 ◽  
Oil Fuel

Malaysia faces three major environmental problems, out of which solid waste and management is one of them. Palm Oil Fuel Ash (POFA) and eggshells are two agro-food waste materials which are produced in enormous quantities in Malaysia. Due to the characteristics possessed by eggshells and POFA, these waste materials can potentially be utilized in the production as cement replacement, reducing the use of cement which is one of the major production of Carbon Dioxide (CO2) gas emissions. This study was conducted to determine the chemical and fresh state properties of foamed concrete incorporating POFA and eggshell ash (ESA) as cement replacement. Based upon the results, it was observed that the increase in usage amount of POFA and ESA as cement replacement, the workability of foamed concrete reduced without blocking. For the chemical analysis result shows the POFA which had high amount of silicon dioxide and ESA having large amount of calcium oxide were compatible and could be used together as cement replacement. The use of ESA and POFA as cement replacement to reduce the cement consumption with various percentage of ESA (0% - 15%) and POFA (20% - 35%) in 1800 kg/m3 density of foamed concrete.

scholarly journals UTILIZATION OF PALM OIL FUEL ASH IN CONCRETE: A REVIEW / PALMI ALIEJAUS KURO PELENŲ NAUDOJIMAS BETONE. APŽVALGA

2011 ◽  
Vol 17 (2) ◽  
pp. 234-247 ◽  
Author(s):  
Md. Safiuddin ◽  
Md. Abdus Salam ◽  
Mohd Zamin Jumaat
Keyword(s):  
Palm Oil ◽  
High Performance ◽  
Health Hazard ◽  
Chemical Properties ◽  
Palm Oil Fuel Ash ◽  
Fuel Ash ◽  
Hardened Properties ◽  
Oil Fuel ◽  
Cementing Material ◽  
Durability Of Concrete

Uncontrolled dumping of palm oil fuel ash (POFA) not only occupies valuable land but also creates environmental pollution and health hazard. These problems can be reduced to a large extent by using POFA in concrete. A number of research works have been carried out to investigate the potential of POFA for use as a supplementary cementing material in normal, high strength, high performance, and aerated concretes. This paper presents a review on the use of POFA in different types of concrete. It firstly discusses the physical and chemical properties of POFA. Then the emphasis has been given on the effects of POFA on the fresh and hardened properties, and durability of concrete. This paper shows that both ground and unground POFA increase the water demand and thus decrease the workability of concrete. However, ground POFA has shown a good potential for improving the hardened properties and durability of concrete due to its satisfactory micro-filling ability and pozzolanic activity. In addition to discussing the benefits of POFA, this study has identified certain gaps in the present state of knowledge on POFA concrete, and listed several research needs for future investigation. The findings of this study would encourage the use of POFA as a supplementary cementing material for concrete. Santrauka Nekontroliuojami palmių aliejaus kuro pelenų (POFA) sąvartynai ne tik užima vertingus žemės plotus, bet ir teršia aplinką bei kelia pavojų sveikatai. Šios problemos gali būti sumažintos POFA naudojant betone. Daug mokslinių tyrimų buvo atlikta siekiant ištirti POFA potencialą, kad juos būtų galima naudoti kaip papildomą normalių, didelio stiprio, aukštos kokybės ir poringujų betonų cementavimo medžiagą. Šiame straipsnyje apžvelgiama, kaip POFA naudojami įvairių tipų betonams. Visų pirma aptariamos fizinės ir cheminės POFA savybės. Tuomet dėmesys atkreipiamas į šviežio ir sukietėjusio betono savybes bei betono ilgaamžiškuma. Šis straipsnis parodo, kad tiek malti, tiek nemalti POFA padidina vandens poreikį ir blogina technologines charakteristikas. Tačiau malti POFA parodė potencialą gerinant betono atsparumo ir ilgaamžiškumo savybes, nes jie pasižymi geromis mikroužpildų savybėmis ir pucolaniniu aktyvumu. Be to, aptarta POFA nauda, nustatytos tam tikros šiuo metu turimų žinių apie POFA betoną spragos ir išvardyta daugelis tyrimų, kurie turėtų būti atlikti ateityje. Šio darbo išvados turėtųpaskatinti naudoti POFA kaip papildomą rišamąją betono medžiagą.

scholarly journals Effect of Utilisation of Nano POFA on Performance of Self-Consolidating High-Performance Concrete (SCHPC)

2021 ◽  
Vol 18 (2) ◽  
pp. 103-117
Author(s):  
Nuradila Izzaty Halim ◽  
◽  
Aidan Newman ◽  
Muhd Norhasri Muhd Sidek ◽  
Hamidah Mohd Saman ◽  
...  
Keyword(s):  
Human Health ◽  
Palm Oil ◽  
High Performance ◽  
High Performance Concrete ◽  
Compression Tests ◽  
Palm Oil Fuel Ash ◽  
Flow Table ◽  
Fuel Ash ◽  
Oil Fuel ◽  
Good Workability

Malaysia's palm oil industry plays a significant role in the country's economy. However, a large amount of palm oil fuel ash (POFA), a by-product of this industry, may negatively affect the environment and human health. Hence, this study hypothesized that POFA might be re-used in the form of replacement in concrete to lessen the risk to the environment or human health. Self-consolidating high-performance concrete (SCHPC) has been innovating progressively over the years. In this paper, SCHPC is innovated by utilising nano POFA (NaPOFA) to improve its performance. The POFA performance greatly improved when the particle size is reduced because the finer forms of POFA react effectively with the other constituent materials to produce stronger concrete. Hence this paper presents the experiment of the effect of utilisation of NaPOFA as a replacement to cement ranging between 0% and 10% to produce a self-consolidating high-performance concrete with good workability. The tests conducted were the flow table and compression test. The specimen used in the compression tests were 50 mm concrete cubes, tested in 1, 3, 7, 14, and 28 days. It was found that the inclusion of 1% POFA as a replacement to cement in concrete produced the highest compressive strength, 73.31 MPa, on the 28th day of testing. It was also found that its workability was as good as the control concrete. Thus, the utilisation of POFA could be considered environmental-friendly since it can be used as cement replacement and enhance the performance in terms of workability and strength.

scholarly journals Evaluation of the effective mechanical properties of palm oil fuel ash based fiber reinforced concrete

2021 ◽  
Vol 1136 (1) ◽  
pp. 012041
Author(s):  
Kristam Srikanth ◽  
Durga Chaitanya Kumar Jagarapu ◽  
T Venkat Das ◽  
Syed Hamim Jeelani ◽  
Arunakanthi Eluru
Keyword(s):  
Mechanical Properties ◽  
Reinforced Concrete ◽  
Palm Oil ◽  
Fiber Reinforced Concrete ◽  
Fiber Reinforced ◽  
Palm Oil Fuel Ash ◽  
Fuel Ash ◽  
Oil Fuel ◽  
Effective Mechanical Properties
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