TY - GEN
T1 - Use of fluidized bed combustion ash in full depth reclamation
AU - Jahangirnejad, Shervin
AU - Morian, Dennis
AU - Scheetz, Barry
AU - Solaimanian, Mansour
N1 - Publisher Copyright:
© ASCE 2015.
PY - 2015
Y1 - 2015
N2 - The pozzolanic nature of fly ash makes it an excellent material for partial replacement of hydraulic cement in many road construction applications. This paper presents such an application for a specific type of cementitious fly ash from a power generating plant using fluidized bed combustion (FBC) called FBC ash. The Portland cement-FBC ash combination was used in full depth reclamation (FDR) of a low volume road in Pennsylvania. The initial mixture design for FDR was conducted for 100% cement as the chemical stabilizer, optimizing the water and cement contents through an engineered design process. Subsequent to the development of the initial mixture design, 50% of the cement was replaced by FBC ash and density and unconfined compressive strength tests were conducted on the cement-FBC ash blend to determine the impact of this replacement on strength and density. Construction of this cement-FBC ash FDR and the all-cement FDR were conducted successfully. Results from unconfined compressive tests on field cores obtained after construction indicated that specimens obtained from cement-FBC ash sections had slightly higher strength than the all-cement specimens.
AB - The pozzolanic nature of fly ash makes it an excellent material for partial replacement of hydraulic cement in many road construction applications. This paper presents such an application for a specific type of cementitious fly ash from a power generating plant using fluidized bed combustion (FBC) called FBC ash. The Portland cement-FBC ash combination was used in full depth reclamation (FDR) of a low volume road in Pennsylvania. The initial mixture design for FDR was conducted for 100% cement as the chemical stabilizer, optimizing the water and cement contents through an engineered design process. Subsequent to the development of the initial mixture design, 50% of the cement was replaced by FBC ash and density and unconfined compressive strength tests were conducted on the cement-FBC ash blend to determine the impact of this replacement on strength and density. Construction of this cement-FBC ash FDR and the all-cement FDR were conducted successfully. Results from unconfined compressive tests on field cores obtained after construction indicated that specimens obtained from cement-FBC ash sections had slightly higher strength than the all-cement specimens.
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U2 - 10.1061/9780784479087.042
DO - 10.1061/9780784479087.042
M3 - Conference contribution
AN - SCOPUS:84925067940
T3 - Geotechnical Special Publication
SP - 419
EP - 428
BT - IFCEE 2015 - Proceedings of the International Foundations Congress and Equipment Expo 2015
A2 - Anderson, J. Brian
A2 - Iskander, Magued
A2 - Suleiman, Muhannad T.
A2 - Laefer, Debra F.
PB - American Society of Civil Engineers (ASCE)
T2 - International Foundations Congress and Equipment Expo 2015, IFCEE 2015
Y2 - 17 March 2015 through 21 March 2015
ER -