The effect of the content of unburned carbon in bottom ash on its applicability for road construction

The effect of the content of unburned carbon in bottom ash on its applicability for road construction

The content of unburned carbon is an important characteristic of bottom ash which could make it unsuitable for incorporation as aggregate for road construction. In this work, the effect of the content of unburned carbon in the bottom ash from the Serbian power plant “Nicola Tesla” on its applicabili...

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Bibliographic Details
Published in:Thermochimica acta Vol. 498; no. 1; pp. 1 - 6
Main Authors: Trifunovic, Prvoslav D., Marinkovic, Slobodanka R., Tokalic, Rade D., Matijasevic, Srdjan D.
Format: Journal Article
Language:English
Published: Oxford Elsevier B.V 20-01-2010
Elsevier
Subjects:
Applied sciences
Buildings. Public works
Differential thermal analysis
Exact sciences and technology
Other wastes and particular components of wastes
Pollution
Recycling of bottom ash
Road construction
Road construction. Pavements. Maintenance
Thermogravimetric analysis
Transportation infrastructure
Unburned carbon
Wastes
Unburned carbon
Differential thermal analysis
Recycling of bottom ash
Thermogravimetric analysis
Road construction
Combustion residue
Particle size
Construction materials
Thermogravimetry
Composition effect
Carbon
Particle size distribution
Ash
Solid waste
Thermal analysis
Recycling
Unburned product
Aggregate(materials)
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Summary:The content of unburned carbon is an important characteristic of bottom ash which could make it unsuitable for incorporation as aggregate for road construction. In this work, the effect of the content of unburned carbon in the bottom ash from the Serbian power plant “Nicola Tesla” on its applicability for road construction was examined. Four samples with different contents of unburned carbon, i.e., raw bottom ash, two size fractions obtained from it (2–5 and <2 mm) and bottom ash treated by the “float–sink” method, were investigated. When these materials were used as a component in the mixture: fly ash–Portland cement–bottom ash–water for road construction, it was found that only mixtures containing bottom ash with a lower carbon content (size fraction <2 mm and treated) were employable. The content of unburned carbon in the mentioned materials was determined by simultaneous DTA/TGA. This method was also used to investigate the composition of the hardened mixtures.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0040-6031
1872-762X
DOI:10.1016/j.tca.2009.10.022