Chapter 6
Coal Combustion Residuals
Publication: Geoenvironmental Engineering: Site and Contaminant Characterization, Containment Facilities, Solid Waste Materials, and Contaminated Ground Interventions
Abstract
Coal combustion residuals (CCRs) are one of the largest types of industrial waste generated in the United States. The US Environmental Protection Agency has published a final rule in the Federal Register to regulate the disposal of CCRs as solid waste under Subtitle D of the Resource Conservation and Recovery Act. The final rule is the culmination of extensive study on the effects of coal ash on the environment and public health. The coal fly ash particles are spherical, ranging from sand to fine silt in size. Fly ash consists primarily of oxides of silicon, aluminum, iron, and calcium. It is classified as either Class C or Class F ash based on its chemical composition. The range of specific gravities observed in fly ash is the result of a combination of many factors, such as gradation, particle shape, and chemical composition.
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References
AASHTO M 295. 2021. “Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete (ASTM Designation: C618-19).”
ACAA (American Coal Ash Association). 2019. “Coal combustion products production and use statistics.” Accessed February 28, 2024. https://acaa-usa.org/wp-content/uploads/coal-combustion-products-use/2019-Survey-Results.pdf.
ASTM International. 2012. Standard guide for laboratory mix design for stabilization of soil and soil-like materials with fly ash, annual book of standards. ASTM D7762-11. West Conshohocken, PA: ASTM.
ASTM. 2015. Standard specification for coal fly ash and raw or calcined natural pozzolan for use in concrete. ASTM C618-15. West Conshohocken, PA: ASTM.
Aydilek, A., and B. Cetin. 2013. “Geoenvironmental impacts of using high carbon fly ash in structural fill applications.” State Highway Administration Research Rep. SP909B4P. Accessed February 28, 2024. https://www.roads.maryland.gov/OPR_Research/MD-13-SP909B4P-Geoenvironmental-Impacts-Of-Using-HCFA-In-Structural-Fill-Applications.pdf.
Balapour, M., W. Zhao, E. J. Garboczi, N. Y. Oo, et al. 2020. “Potential use of lightweight aggregate (LWA) produced from bottom coal ash for internal curing of concrete systems.” Cem. Concr. Compos. 105: 103428.
Bin-Shafique, S., T. B. Edil, C. Benson, and A. Senol. 2004. “Incorporating a fly-ash stabilised layer into pavement design.” Geotech. Eng. 157 (4): 239–249.
Blanc, D., L. Gonzalez, M. Lupsea-Toader, and C. de Brauer. 2018. “Mineralogical evolution and leaching behaviour of a heap of bottom ash as a function of time: Influence on its valorization.” Waste Biomass Valorization 9: 2517–2527.
Camargo, F., T. Edil, and C. Benson. 2013. “Strength and stiffness of recycled pavement materials stabilized with fly ash: A laboratory study.” Road Mater. Pavement Des. 14 (2): 1–13.
Carpenter, A., K. Gardner, J. Fopiano, C. Benson, et al. 2007. “Life cycle-based risk assessment of recycled materials in roadway construction.” Waste Manage. 27 (10): 1458–1464.
Cetin, B., A. H. Aydilek, and Y. Guney. 2010. “Stabilization of recycled base materials with high carbon fly ash.” Resour. Conserv. Recycl. 54 (11): 879–892.
Chan, H. T. 1983. Bottom ash: A potential aggregate for highway base and subbase courses. Tech. Rep. 83-222-K. Toronto: Ontario Hydro Research Division.
Coban, H. S., and B. Cetin. 2018. “The use of lime sludge alone and with class C fly ash for subgrade soil stabilization.” Transp. Res. Board 295: 495–504.
Dayioglu, M., B. Cetin, and S. Nam. 2017. “Stabilization of expansive Belle Fourche shale clay with different chemical additives.” Appl. Clay Sci. 146: 56–69.
DeBarr, J. A. 1996. “Valuable products from utility fly ash.” Prepr. Pap. Am. Chem. Soc., Div. Fuel Chem. 41 (2): 604–606.
Dienhart, G. J., B. R. Stewart, and S. S. Tyson. 1998. Coal ash: Innovative applications of coal combustion products. Alexandria, VA: American Coal Ash Association.
Ebrahimi, A., B. Kootstra, T. Edil, and C. Benson. 2012. “Practical approach for designing flexible pavements using recycled roadway materials as base course.” Road Mater. Pavement Des. 13 (3): 1–18.
Edil, T. B., H. A. Acosta, and C. H. Benson. 2006. “Stabilizing soft fine-grained soils with fly ash.” J. Mater. Civ. Eng. 18 (2): 283–294.
EIA (US Energy Information Administration). 2019. “Frequently asked questions (FAQs).” Accessed December 30, 2020. https://www.eia.gov/tools/faqs/faq.php?id=427&t=3.
EPRI (Electric Power Research Institute). 2016. Corrective action technology profile: Practical feasibility of in situ stabilization/solidification as a source control for coal combustion residuals. Palo Alto, CA: EPRI.
FHWA (Federal Highway Administration). 2003. “Fly ash facts for highway engineers.” 4th ed. FHWA-IF-03-019. Washington, DC: FHWA.
FHWA. 2011. “User guidelines for waste and byproduct materials in pavement construction.” FHWA-RD-97-148. Accessed February 28, 2024. https://www.fhwa.dot.gov/publications/research/infrastructure/structures/97148/toc.cfm.
FR (Federal Register). 2015. Hazardous and solid waste management system: Disposal of coal combustion residuals from electric utilities. 40 CFR Parts 257 and 261, 80(74). Washington, DC: USEPA.
Gray, D. H., and Y. K. Lin. 1972. “Engineering properties of compacted fly ash.” J. Soil Mech. Found. Eng. 98 (4): 361–380.
Joshi, R. C., and R. P. Lohita. 1997. Fly ash in concrete: Production, properties and uses. Boca Raton, FL: CRC Press.
Kadir, A. B. A., and M. I. H. Hassan. 2014. “An overview of fly ash and bottom ash replacement in self-compaction concrete.” Key Eng. Mater. 594: 465–470.
Komonweeraket, K., B. Cetin, C. H. Benson, A. H. Aydilek, et al. 2015a. “Geochemical analysis of leached elements from fly ash stabilized soils.” J. Geotech. Geoenviron. Eng. 141 (5): 04015012.
Komonweeraket, K., B. Cetin, C. H. Benson, A. H. Aydilek, et al. 2015b. “Leaching characteristics of toxic constituents from coal fly ash mixed soils under the influence of pH.” Waste Manage. 38: 174–184.
Komonweeraket, K., B. Cetin, C. H. Benson, A. H. Aydilek, et al. 2015c. “Effects of pH on the leaching mechanisms of elements from fly ash mixed soils.” Fuel 140: 788–802.
Lee, J., T. B. Edil, C. H. Benson, and J. M. Tinjum. 2013. “Building environmentally and economically sustainable transportation infrastructure: Green highway rating system.” J. Constr. Eng. Manage. 139 (12): A401300.
Lee, J. C., T. B. Edil, C. H. Benson, and J. M. Tinjum. 2011. “Evaluation of variables affecting sustainable highway design with BE2ST-in-highways system.” Transp. Res. Rec. 2233 (1): 178–186.
Lee, J. C., T. B. Edil, J. M. Tinjum, and C. H. Benson. 2010. “Quantitative assessment of environmental and economic benefits of using recycled construction materials in highway construction.” Transp. Res. Rec. 2158 (1): 1–11.
Leonards, G. A., and B. Bailey. 1982. “Pulverized coal ash as structural fill.” J. Geotech. Eng. Div. 108 (4): 517–531.
Li, L., C. Benson, T. Edil, and B. Hatipoglu. 2008. “Sustainable construction case history: Fly ash stabilization of recycled asphalt pavement material.” Geotech. Geol. Eng. 26 (2): 177–187.
Li, L., T. B. Edil, and C. H. Benson. 2009. “Mechanical performance of pavement geomaterials stabilized with fly ash in field applications.” Coal Combust. Gasific. Prod. 1 (1): 43–49.
Mahedi, M., B. Cetin, and D. J. White. 2020b. “Cement, lime, and fly ashes in stabilizing expansive soils: Performance evaluation and comparison.” J. Mater. Civ. Eng. 32 (7): 04020177.
Martin, J., R. Collins, J. Browning, and F. Beihl. 1990. “Properties and use of fly ashes for embankments.” J. Energy Eng. 116 (2): 71–86.
McLaren, R. J., and A. M. Digioia. 1987. “The typical engineering properties of fly ash.” In Proc., Conf. on Geotechnical Practice for Waste Disposal, ASCE Geotechnical Special Publication 13, edited by E. Wood, New York, 683–697.
Mehta, P. K., and P. J. M. Monteiro. 1997. Concrete: Microstructure, properties and material. Chennai, India: Indian Concrete Institute.
Moghal, A. A. B. 2017. “State-of-the-art review on the role of fly ashes in geotechnical and geoenvironmental applications.” J. Mater. Civ. Eng. 29 (8): 04017072.
Moulton, K. L. 1978. Technology and utilization of power plant ash in structural fills and embankments. Morgantown, WV: West Virginia University.
Nam, B. H. 2014. “Evaluating the use of waste-to-energy bottom ash as road construction materials.” Ph.D. thesis, University of Central Florida, Dept. of Civil, Environmental, and Construction Engineering.
Natusch, D. F. S., Wallace, J. R., and Evans, C. A., Jr. (1974). “Toxic trace elements: Preferential concentration in respirable particles.” Science 183 (4121): 202–204.
Ongwandee, M., Namepol, K., Yongprapat, K., Homwuttiwong, S.,et al. 2020. “Coal bottom ash use in traditional ceramic production: Evaluation of engineering properties and indoor air pollution removal ability.” J. Mater. Cycles Waste Manage. 22 (6): 2218–2129.
Pandian, N. S., C. Rajasekhar, and A. Sridharan. 1998. “Studies on the specific gravity of some Indian coal ashes.” J. Test. Eval. 26 (3): 177–186.
Ramme, B. W., and M. P. Tharaniyil. 2013. We Energies’ coal combustion products utilization handbook. 3rd ed. Milwaukee: Wisconsin Electric Power, https://www.we-energies.com/environment/pdf/ccp_handbook.pdf
Rosa, M. G., B. Cetin, T. B. Edil, and C. H. Benson. 2016. “Development of a test procedure for freeze–thaw durability of geomaterials stabilized with fly ash.” Geotech. Test. J. 39 (6): 938–953.
Rosa, M. G., B. Cetin, T. B. Edil, and C. H. Benson. 2017. “Freeze–thaw performance of fly ash stabilized materials and recycled pavement materials.” J. Mater. Civ. Eng. 29 (6): 04017015.
Singh, A. K., R. E. Masto, B. Hazra, J. Esterle, et al. 2020. Ash from coal and biomass combustion. Cham, Switzerland: Springer.
Sivapullaiah, P. V., and A. A. B. Moghal. 2010. “Leachability of trace elements from two stabilized low lime Indian fly ashes.” Environ. Earth Sci. 61 (8): 1735–1744.
Sivapullaiah, P. V., and A. A. B. Moghal. 2011. “Role of gypsum in the strength development of fly ashes with lime.” J. Mater. Civ. Eng. 23 (2): 197–206.
Sivapullaiah, P. V., J. P. Prashanth, A. Sridharan, and B. V. Narayana. 1998. “Reactive silica and strength of fly ashes.” J. Geotech. Geol. Eng. 16 (3): 239–250.
Soleimanbeigi, A., and T. B. Edil. 2014. “Settlement of highway embankments constructed with recycled materials.” In Mid-Continent Transportation Symp. Madison, WI: Madison Concourse Hotel.
Tastan, E. O., T. B. Edil, C. H. Benson, and A. H. Aydilek. 2011. “Stabilization of organic soils with fly ash.” J. Geotech. Geoenviron. Eng. 137 (9): 819–833.
Toth, P. S., H. T. Chan, and C. B. Cragg. 1988. “Coal ash as structural fill with special reference to Ontario experience.” Can. Geotech. J. 25 (4): 694–704.
Trivedi, A., and S. Singh. 2004. “Geotechnical and geoenvironmental properties of power plant ash.” J. Inst. Eng. 85: 93–99.
USEPA (US Environmental Protection Agency). 2019. “Coal ash reuse.” Accessed February 28, 2024. https://www.epa.gov/coalash/coal-ash-reuse.
Winter, M. G., and B. G. Clarke. 2002. “Improved use of pulverised fuel ash as general fill.” Proc. Inst. Civ. Eng. Geotech. Eng. 155 (2): 133–141.
Yudhbir, H. Y., and Y. Honjo. 1991. “Application of geotechnical engineering to environmental control.” In Proc., 9th Asian Regional Conf. on Soil Mechanics and Foundation Engineering, 431–469. Bangkok, Thailand.
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Geoenvironmental Engineering: Site and Contaminant Characterization, Containment Facilities, Solid Waste Materials, and Contaminated Ground Interventions
Pages: 129 - 144
Editor: Dimitrios Zekkos, Ph.D., P.E.
ISBN (Online): 978-0-7844-8549-1
ISBN (Print): 978-0-7844-1623-5
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© 2024 by the American Society of Civil Engineers.
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Published online: Jul 8, 2024
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