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US 8,945,300 B2Granted
Utilization of heavy oil ash to produce high quality concrete
AssigneeSaudi Arabian Oil Company
InventorsMohammed Al-Mehthel, Abdulaziz S. Al-Utaibi, Mohammed Maslehuddin, Mohammed Rizwan Ali
Life of this patent
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Abstract
A concrete mixture that includes aggregates, water and cement can include heavy oil ash instead of or in addition to a portion of the cement. In one embodiment, the heavy oil ash originates from heavy fuel oil burned in a power generation plant. The weight of the heavy oil ash used in the concrete mixture can be from greater than 0 to about 10% of the weight of the cement.
Claims19
A heavy oil ash cement concrete, comprising:
- an aggregate having cementitious properties, reactivity with lime or both;
- heavy oil ash fines comprising at least 90% carbon and at least 80% of the heavy oil ash fines being finer than 45 micrometer (#325 sieve), where heavy oil ash fines do not have cementitious properties and do not react with lime;
- water, and
- a Portland cement,
- where the heavy oil ash cement concrete is the result of the mixing of the water and cement in the presence of heavy oil ash fines and the aggregate, the heavy oil ash cement has a cement matrix, the cement matrix defines a plurality of pores, and the heavy oil ash fines fill at least a portion at the plurality of pores.
2 more elements
A heavy oil ash cement concrete, the heavy oil ash cement concrete comprising;
- water;
- a Portland cement;
- an aggregate having cementitious properties, reactivity with lime or both;
- and heavy oil ash fines comprising a heavy oil ash and being free of fly ash and silica fume, the heavy oil ash comprising at least 90% carbon and at least 80% of the heavy oil ash being finer than 45 micrometer (#325 sieve), the heavy oil ash not having cementitious properties and not being reactive with lime;
- where the heavy oil ash cement concrete is the result of the mixing of the water and the Portland cement in the presence of heavy oil ash fines and the aggregate, the heavy oil ash cement having a cement matrix, the cement matrix defining a plurality of pores, and heavy oil ash fines filling at least a portion of the plurality of pores.
2 more elements
Dependencies are inferred from the claim text.