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Title: Synthetic aggregate compositions derived from spent bed materials from fluidized bed combustion and fly ash

Abstract

Cementitious compositions useful as lightweight aggregates are formed from a blend of spent bed material from fluidized bed combustion and fly ash. The proportions of the blend are chosen so that ensuing reactions eliminate undesirable constituents. The blend is then mixed with water and formed into a shaped article. The shaped article is preferably either a pellet or a "brick" shape that is later crushed. The shaped articles are cured at ambient temperature while saturated with water. It has been found that if used sufficiently, the resulting aggregate will exhibit minimal dimensional change over time. The aggregate can be certified by also forming standardized test shapes, e.g., cylinders while forming the shaped articles and measuring the properties of the test shapes using standardized techniques including X-ray diffraction.

Inventors:
 [1]
  1. (Aston, PA)
Issue Date:
Research Org.:
Valley Forge Labs., Inc., Devon, PA (United States)
OSTI Identifier:
869516
Patent Number(s):
5350549
Assignee:
Valley Forge Laboratories, Inc. (Devon, PA) CHO
DOE Contract Number:  
FG02-90ER81006
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
synthetic; aggregate; compositions; derived; spent; bed; materials; fluidized; combustion; fly; ash; cementitious; useful; lightweight; aggregates; formed; blend; material; proportions; chosen; ensuing; reactions; eliminate; undesirable; constituents; mixed; water; shaped; article; preferably; pellet; brick; shape; crushed; articles; cured; ambient; temperature; saturated; found; sufficiently; resulting; exhibit; minimal; dimensional; change; time; certified; forming; standardized; shapes; cylinders; measuring; properties; techniques; including; x-ray; diffraction; bed material; shaped articles; x-ray diffraction; bed combustion; cementitious compositions; fly ash; fluidized bed; ambient temperature; shaped article; ensuing reaction; compositions useful; dimensional change; spent bed; exhibit minimal; aggregate composition; cementitious composition; /264/106/436/

Citation Formats

Boyle, Michael J. Synthetic aggregate compositions derived from spent bed materials from fluidized bed combustion and fly ash. United States: N. p., 1994. Web.
Boyle, Michael J. Synthetic aggregate compositions derived from spent bed materials from fluidized bed combustion and fly ash. United States.
Boyle, Michael J. Sat . "Synthetic aggregate compositions derived from spent bed materials from fluidized bed combustion and fly ash". United States. https://www.osti.gov/servlets/purl/869516.
@article{osti_869516,
title = {Synthetic aggregate compositions derived from spent bed materials from fluidized bed combustion and fly ash},
author = {Boyle, Michael J.},
abstractNote = {Cementitious compositions useful as lightweight aggregates are formed from a blend of spent bed material from fluidized bed combustion and fly ash. The proportions of the blend are chosen so that ensuing reactions eliminate undesirable constituents. The blend is then mixed with water and formed into a shaped article. The shaped article is preferably either a pellet or a "brick" shape that is later crushed. The shaped articles are cured at ambient temperature while saturated with water. It has been found that if used sufficiently, the resulting aggregate will exhibit minimal dimensional change over time. The aggregate can be certified by also forming standardized test shapes, e.g., cylinders while forming the shaped articles and measuring the properties of the test shapes using standardized techniques including X-ray diffraction.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {1}
}

Patent:

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