Geotechnical Properties of Problem Soils Stabilized with Fly Ash and Limestone Dust in Philadelphia
Publication: Journal of Materials in Civil Engineering
Volume 23, Issue 5
Abstract
This paper presents the results of a laboratory experimental program to evaluate the potential of limestone dust (LSD) and coal fly ash (CFA) to stabilize some problem soils in southeastern Pennsylvania. Some of the geotechnical characteristics of the soils investigated include Atterberg limits, compaction, California bearing ratio (CBR), swell, and unconfined compressive strength (UCS). A one-way analysis of variance (ANOVA) test performed on the generated data confirmed that LSD and CFA contents significantly influenced the compaction and the strength characteristics of Philadelphia soils stabilized with these additives. Results of the study showed that the plasticity and swell of the soils were reduced by 40% and between 40 and 70%, respectively. The results further showed a marked increase in strength of the soils for CBR and UCS when stabilized with the additives.
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Acknowledgments
The writers acknowledge the help of the Center for Microanalysis and Imaging Research and Training (CMIRT) at Westchester University, Pennsylvania. Dr. Frederick Monson’s work in taking the micrographs is duly acknowledged. Acknowledgement is also due to Dr. Naji Khoury for his assistance during the preparation of this paper.
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 23 • Issue 5 • May 2011
Pages: 711 - 716
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Sep 13, 2008
Accepted: Oct 22, 2010
Published online: Oct 27, 2010
Published in print: May 1, 2011
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