Influence of elevated temperatures on physical and compressive strength properties of concrete containing palm oil fuel ash

Ismail, Mohammad; Ismail, Mohamed El Gelany; Muhammad, Bala

doi:10.1016/j.conbuildmat.2010.11.034

Cited by 90 publications

(27 citation statements)

References 15 publications

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“…14. Furthermore, Ismail et al [70] reported that at a temperature of approximately 350°-550 °C, residual performance enhancements may be achieved in favor of POFA concrete compared to its original performance, particularly when water has not been employed in the cooling process. They investigated the surface discoloration of fired-concrete and observed that the penetration of the surface color into the concrete depended on the amount of inward heat.…”

Section: Performance Of Pofa Concrete At Elevated Temperaturesmentioning

confidence: 97%

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On blended cement and geopolymer concretes containing palm oil fuel ash

et al. 2016

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Section: Performance Of Pofa Concrete At Elevated Temperaturesmentioning

confidence: 97%

“…Ismail et al [70] studied the effects of elevated temperature, which involved water spray and air-cooling systems, on the properties of POFA concrete. In their investigation, 28-d concrete samples were exposed to 800 °C, and a greater amount of mass loss was observed.…”

Section: Performance Of Pofa Concrete At Elevated Temperaturesmentioning

confidence: 99%

On blended cement and geopolymer concretes containing palm oil fuel ash

et al. 2016

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“…Currently, pozzolans from agro-wastes and industrial wastes have been of much interest in the field of building materials as they contribute to blended cement concrete with superior properties parallel to the reduction of the aforementioned environmental problems [5]. With the growing interest in looking for eco-friendly building materials, researchers found a need for assessing the potential use of ash from agricultural wastes.…”

Section: Introductionmentioning

confidence: 99%

“…Meanwhile, there are complications on the fire endurance ability of traditional concrete by itself due to dissimilar thermal characteristics of the components forming the composite material, porosity and moisture content [5]. Generally, the OPC products are considered as good fire resisting structural materials which can still perform suitably even after a long time of exposure [19].…”

Section: Introductionmentioning

confidence: 99%

Effect of Elevated Temperature on Compressive Strength and Physical Properties of Neem Seed Husk Ash Concrete

2020

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High temperature rise mostly caused by a fire outbreak is currently becoming a threat that endangers concrete's structural performance for buildings and the safety of occupants. The behavior of concrete after fire subjection has been of much interest for the structural materials design purposes. This study investigated the physical properties and the compressive strength of M25 concrete incorporating Neem Seed Husk Ash (NSHA), exposed to and through targeted different levels of temperature (200 • C to 800 • C) for a period of three hours in an electric furnace. The NSHA was produced by calcining neem seed husks at 800 • C for six hours and then sieved through the 125 µm sieve. Different amounts of NSHA were investigated while considering the plain concrete as the control sample. 150 concrete cubes of 150 mm sizes were cast and properly cured for 7 and 28 days. The experimental results show that the compressive strength of the 5% NSHA concrete exposed to temperatures up to 400 • C is 21.3% and 23.8% better than the normal concrete at 7 and 28 curing days, respectively. Surface cracks and spalling are noticeable at 600 • C and 800 • C for all samples considered in this study.

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“…The raw palm oil fuel ash was first dried at 105°C ± 5°C for 24 h. Then, POFA was sieved through a 300-lm sieve in order to remove the debris and extraneous materials such as unburned fibers and shells [30,31]. The sieved POFA was then ground with a modified Los Angeles machine [32] for more than 12 h. The specific surface area of the POFA after grinding was 0.915 m 2 /g. The grinding process is an effective way to turn the material to a homogeneous powder with smaller size particles and to increase the alkali activation rate.…”

Section: Introductionmentioning

confidence: 99%