Cementitious compositions and methods of making and using
View Patent ↗A cementitious composition is provided that comprises an effective amount of bottom ash and an effective amount of cement. In one embodiment, a structural product formed from mixing the composition with an effective amount of water has a seven-day compressive strength of at least about 2,500 psi and, more preferably, a seven-day compressive strength of at least about 4,000 psi. In another embodiment, a structural product formed from mixing the composition with an effective amount of water has a twenty-eight-day compressive strength of at least about 4,000 psi and, more preferably, a twenty-eight-day compressive strength of at least about 5,000 psi.
1. A cementitious composition for mixing with water to form a structural product, the composition comprising:
bottom ash, said bottom ash comprising a first portion and a second portion, said second portion comprising a particle size between 0.75 inches to 0.003 inches and said first portion comprising a particle size of less than about 0.006 inches, said first and second portions being mixed together to provide a particle distribution for said bottom ash wherein approximately fifty percent of said bottom ash has a particle size less than about 0.012 inches;
Portland cement; and
wherein said bottom ash and said cement are in a ratio between 2:1 and 2:3 by weight.
2. A composition according to claim 1 wherein the composition has a per unit volume weight of less than about 100 pounds per cubic foot of volume.
3. A cementitious product for mixing with water to form a structural product, comprising:
a container having a volume;
a cementitious composition substantially filling the volume of said container, said composition comprising:
bottom ash, said bottom ash comprising a first portion and a second portion, said second portion comprising a particle size between 0.75 inches to 0.003 inches and said first portion comprising a particle size of less than about 0.006 inches, said first and second portions being mixed together to provide a particle distribution for said bottom ash wherein approximately fifty percent of said bottom ash has a particle size less than about 0.012 inches;
Portland cement; and
wherein said composition has bottom ash and cement in a ratio between 2:1 and 2:3 by weight, and wherein said container and said composition together weigh less than approximately 100 pounds per cubic foot of volume.
4. A product according to claim 3 wherein said container and said composition weigh less than approximately 90 pounds per cubic foot of volume.
5. A product according to claim 3 wherein said container is selected from the group consisting of a paper bag, a plastic bag, and a plastic bucket having a lid.
6. A method of manufacturing a cementitious product for use in forming a structural product, comprising:
providing bottom ash, wherein the bottom ash comprises a first portion and a second portion, the second portion comprising a particle size between 0.75 inches to 0.003 inches and the first portion comprising a particle size of less than about 0.006 inches, said providing step comprising mixing the first and second portions together to provide a particle distribution for the bottom ash wherein approximately fifty percent of the bottom ash has a particle size less than about 0.012 inches;
mixing the bottom ash with Portland cement in a ratio of bottom ash to cement between 2:1 and 2:3 by weight to thereby provide a cementitious composition; and
packaging the composition in a container wherein the container and the composition together weigh less than approximately 100 pounds per cubic foot of volume.
7. A method according to claim 6 wherein said providing step comprises removing particles from the bottom ash having a particle size exceeding about 0.75 inches.
8. A method according to claim 6 wherein the first portion and second portion are substantially equally weighted.
9. A method according to claim 6 wherein said packaging step comprises packaging the composition in a container wherein the container and the composition together weigh less than approximately 90 pounds per cubic foot of volume.
10. A method according to claim 6 , wherein said packaging step comprises packaging the composition in a container wherein the container is selected from the group consisting of a paper bag, a plastic bag, and a plastic bucket having a lid.
11. A method of making a structural product, comprising:
providing bottom ash, wherein the bottom ash comprises a first portion and a second portion, the second portion comprising a particle size between 0.75 inches to 0.003 inches and the first portion comprising a particle size of less than about 0.006 inches, said providing step comprising mixing the first and second portions together to provide a particle distribution for the bottom ash wherein approximately fifty percent of the bottom ash has a particle size less than about 0.012 inches; and
mixing the bottom ash with Portland cement in a ratio of bottom ash to cement between 2:1 and 2:3 by weight;
mixing an effective amount of water with the cementitious composition; and
subsequent to said third mixing step, curing the cementitious composition to thereby form a structural product.