Investigation of the Potential Use of Heavy Oil Fly Ash as Stabilized Fill Material for Construction

Mofarrah, Abdullah; Husain, Tahir; Danish, Ekram Y.

doi:10.1061/(asce)mt.1943-5533.0000442

Cited by 13 publications

(15 citation statements)

References 14 publications

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“…The study also showed that HOFA blended with cement can be used as soil stabilization material in an environmentally safe manner (Mofarrah et al, 2012a).…”

Section: Future Strategymentioning

confidence: 89%

Environment and Sustainable Development in the Kingdom of Saudi Arabia: Current Status and Future Strategy

Husain¹,

Khalil²

2013

JSD

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Air quality deterioration in urban areas; high energy demand and consumption due to regional population growth and economic development; concerns about safe drinking water supplies due to a scarcity of fresh water; air quality deterioration, industrial pollution, waste management, and pollution in coastal areas; and subsequent stress on marine ecosystems are all major environmental challenges being faced by the Kingdom of Saudi Arabia. For effective protection of the environment, an interdisciplinary approach within a sustainable framework, which integrates human needs with economic development and environmental protection, is required. This paper presents an overview of Saudi Arabia's major environmental problems and challenges and offers opportunities to use economic growth, social equity, and protection of the environment as interrelated components. The role of active participation by governments, stakeholders, businesses, academic institutions, and individuals in the decision-making process and an inter-disciplinary research approach will be identified for each major environmental issue.

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“…The study also showed that HOFA blended with cement can be used as soil stabilization material in an environmentally safe manner (Mofarrah et al, 2012a).…”

Section: Future Strategymentioning

confidence: 89%

Environment and Sustainable Development in the Kingdom of Saudi Arabia: Current Status and Future Strategy

Husain¹,

Khalil²

2013

JSD

Self Cite

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“…Therefore, the result of leaching test has an important role in the use HOFA mixed concrete in landscape. The recent study Mofarrah et al (2012) revealed that most of the toxic elements in HOFA showed higher leaching values with lower pH level of the leaching solution. In order to evaluate the maximum leachate concentration, this study used ANC method using HNO 3 solutions (pH 3.0) as leaching media.…”

Section: Batch Leaching Testmentioning

confidence: 99%

“…HOFA consists of inorganic substances such as SiO 2 , iron oxide (Fe 2 O 3 ), aluminum oxide (Al 2 O 3 ) and 70-80 % unburned carbon (Kwon et al 2005). It also contains heavy metals such as arsenic (As), cadmium (Cd), mercury (Hg), copper (Cu), vanadium (V) and nickel (Ni) which exist in the fuel at the outset, but these levels increase during burning (Mofarrah et al 2012;Hwang et al 1996). The bulk density of HOFA varies from 0.50 to 1.50 g/cm and its true density and porosity are reported as 2.15 g/cm and 10.31 % respectively (Kwon et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Use of Heavy Oil Fly Ash as a Color Ingredient in Cement Mortar

Mofarrah

Husain

2013

Int J Concr Struct Mater

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Heavy oil fly ash (HOFA) is a byproduct generated by the burning of heavy fuel oil. Chemical analysis showed that HOFA is mainly composed of unburned carbon with a significant amount of heavy metals. Due to toxicity, management of this waste poses a challenge to the industry personal. The present study investigates the possible use of HOFA as a black pigment or admixture in cement mortar aiming to produce ornamental brick. In order to investigate the change of cement mortar strength when HOFA is added, the standard compressive strength test with 50 mm cubes was performed. The results showed that the addition of 2-5 % of HOFA in cement mortar does not affect its strength. The leaching behavior of trace elements within HOFA and HOFA mixed mortar were investigated through laboratory batch leaching experiments. The results confirmed that HOFA can be utilized as a black pigment in ornamental brick, which is environmentally safe and provides good balance between color and brick properties.

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“…As mentioned above, the amount of carbon in the fly ash can reach up to 90% [4,5]. These carbon atoms mostly exist in the form of graphite-like sp 2 and diamond-like sp 3 hybridization states [17].…”

Section: Introductionmentioning

confidence: 99%

“…In some cases, this carbon quantity can reach to above 90%. In addition, fly ash contains other metals, like vanadium (V), nickel (Ni), copper (Cu), arsenic (As), cadmium (Cd), and mercury (Hg) [4,5].…”

Section: Introductionmentioning

confidence: 99%

Carbon rich fly ash and their nanostructures

Salah¹,

S²,

H³

et al. 2016

Carbon letters

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Carbon rich fly ash was recently reported to have compositions that are ideal for use as a precursor and catalyst for carbon nanotube growth. This fly ash powder is mostly composed of pure carbon, predominantly present as sp 2 . In this work, the effect of sonication time on the morphology and structural properties of carbon rich fly ash particles is reported. The obtained results show that ultrasound treatment is an effective tool for producing ultrafine particles/fragments with higher porosity, which might be suitable for the adsorption of gasses. Moreover, carbon nanoparticles (CNPs) of this fly ash were produced in parallel using the ball milling technique, and were evaluated as reinforcements for epoxy based composites. These CNPs have almost spherical shapes with particle sizes of around 30 nm. They were found to have strong C=O carbonyl group bonds, which might be generated during the ball milling process. The tensile testing results of a fly ash CNP reinforced epoxy composite showed significant improvements in the mechanical properties, mainly in the stiffness of the polymer. The stiffness value was increased by around 23% of that of neat epoxy. These CNPs with chemically active groups might also be useful for other applications.

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Investigation of the Potential Use of Heavy Oil Fly Ash as Stabilized Fill Material for Construction

Cited by 13 publications

References 14 publications

Environment and Sustainable Development in the Kingdom of Saudi Arabia: Current Status and Future Strategy

Environment and Sustainable Development in the Kingdom of Saudi Arabia: Current Status and Future Strategy

Use of Heavy Oil Fly Ash as a Color Ingredient in Cement Mortar

Carbon rich fly ash and their nanostructures

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