Method of producing a coal combustion ash composition
AssigneeThe University of Wyoming Research Corporation
InventorAlan E. Bland
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Abstract
This invention discloses a system for cold bond processing of combustion ash which enhances various characteristics of the resulting cured consolidated combustion ash materials. Specifically, the invention relates to processing techniques which enhances both density and strength of the of the consolidated combustion ash materials. The invention also relates to processing techniques which control various chemical reactions which assure that certain types of minerals are formed in the proper amounts which results in a cured consolidated combustion ash material which has greater dimensional stability and enhanced resistance to degradation. Embodiments for both normal weight and light weight combustion ash aggregates are disclosed which meet various ASTM and AASHTO specifications.
Claims35
A method of generating a combustion ash composition, comprising the steps of:
- a. providing an amount of combustion ash;
- b. providing an amount of water having a weight of about 10% to about 40% relative to the weight of said combustion ash;
- c. mixing said amount of combustion ash and said amount of water;
- and
- d. reducing the average pore volume of the generated combustion ash composition to between about 15% to about 40%.
A method of generating a combustion ash composition, comprising the steps of:
- a. providing an amount of combustion ash;
- b. providing an amount of water;
- c. providing an amount of pore filling controlling compound;
- d. combining said amount of water, said amount of combustion ash, and said amount of pore filling controlling compound;
- e. forming an amount of non-pore filling compound by reaction of said pore filling controlling compound with at least a portion of precursor pore filling compound present in said amount of combustion ash;
- and
- f. generating a combustion ash composition.
Dependencies are inferred from the claim text.