Cementless building units based on oil shale and coal fly ash binder

Freidin, C.; Motzafi-Haller, Wolfgang

doi:10.1016/s0950-0618(99)00041-0

Cited by 14 publications

(4 citation statements)

References 4 publications

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“…The application of wastes from power plants as materials for road construction is connected with their characteristics. FA with low CaO content (the class F according to ASTM 618) may exhibit pozzolanic properties and could be applied as a substitute for Portland cement (PC) in concrete (Manz, 1999;Benavidez et al 2003;McCarthy and Dhir, 1999;Freidin and Motzafi-Haller, 1999;Asokan et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Some contributions to the examination of composites from power plant wastes

Trifunovic

Marinkovic

Tokalić

2015

Pod Rad

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This paper describes an investigation into the possibilities of the use of all three types of solid power plant wastes: fly ash (FA), flue gas desulphurization gypsum (FGD gypsum) and bottom ash (BA) as components of composites for road construction. Two mixtures were made: 1. power plant wastes-Portland cement (PC) and 2. power plant wastes-sand (S)-Portland cement (PC). The mass ratio of components in these mixtures was:

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Section: Introductionmentioning

confidence: 99%

Some contributions to the examination of composites from power plant wastes

Trifunovic

Marinkovic

Tokalić

2015

Pod Rad

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“…The main aspect of the ecological risk associated with reuse of mineral waste is the leaching of inorganic contaminants when the materials are in contact with water [20,24,33,34]. A composite material is a combination of two or more materials (in certain proportions) whose characteristics differ from those of its individual components [35,36]. In this context there is a lack of data concerning the environmental properties of construction materials (including backfilling composites for mining industry) based on OSA or OSA with added cement production residue bypass dust (BD).…”

Section: Introductionmentioning

confidence: 99%

Leaching Behaviour of Estonian Oil Shale Ash-Based Construction Mortars

Irha¹,

Uibu²,

Jefimova³

et al. 2014

Oil Shale

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To estimate the environmental properties of oil shale ash-based mortars the leaching of harmful components was studied. The leachates were highly alkaline. The predominant ions were Ca 2+ , K + , Na + , SO 4 2-. The leachable content of soluble components in PF ash mortars was higher in comparison with that in CFB ash mortars. Results indicated that over curing time the fraction of readily soluble inorganic components decreased and the mobility of potentially hazardous Cd and Zn did not increase. Addition of bypass dust could affect the content of leachable ions. Results give new knowledge about the environmental properties of oil shale ash-based materials, including backfilling composites for underground mining technology.

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“…However only small percentage was used or recycled with the remain of the ashes were sent for disposal to lagoons or ponds if unutilized [3]. Researches elsewhere have reported the initiatives of study on the use of fly ash as raw material for masonry brick as the only solid or in combination with other materials [4][5][6][7][8][9][10][11], however, there is paucity of published work on the use of fly ash and bottom ash as the main raw material incorporating Hydrated Lime (HL)-activated Ground Granulated Blastfurnace Slage (GGBS) as the binder. There is also little evidence in the research effort carried out to lightweight the bricks [12].…”

Section: Introductionmentioning

confidence: 99%

Compressive Strength and Density of Cementless Unfired Lightweight Brick Utilizing Coal Ash from Coal-Fired Thermal Power Plant

Pahroraji

Saman

Rahmat

et al. 2013

KEM

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Millions tons of coal ash which constitute of fly ash and bottom ash were produced annually throughout the world. They were significant to be developed as masonry brick to substitute the existing widely used traditional material such as clay and sand brick which were produced from depleting and dwindling natural resources. In the present study, the coal ash from coal-fired thermal power plant was used as the main raw material for the fabrication of cementless unfired lightweight brick. The binder comprising of Hydrated Lime (HL)-activated Ground Granulated Blastfurnace Slag (GGBS) system at binding ratio 30:70, 50:50 and 70:30 were used to stabilize the coal ash in the fabrication process of the brick. Foam was used to lightweight the brick. The compressive strength and ambient density were evaluated on the brick. The results indicated that the brick incorporating HL-GGBS system achieved higher strength of 20.84N/mm2 at 28 days compare to the HL system with strength of 13.98N/mm2 at 28 days. However, as the quantity of foam increase at 0%, 25%, 50%, 75% and 100%, the strength and density for the brick decreased.

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Cementless building units based on oil shale and coal fly ash binder

Cited by 14 publications

References 4 publications

Some contributions to the examination of composites from power plant wastes

Some contributions to the examination of composites from power plant wastes

Leaching Behaviour of Estonian Oil Shale Ash-Based Construction Mortars

Compressive Strength and Density of Cementless Unfired Lightweight Brick Utilizing Coal Ash from Coal-Fired Thermal Power Plant

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