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Please use this identifier to cite or link to this item: http://hdl.handle.net/1860/1639

Title: Field evaluation of crushed glass-dredged material blends
Authors: Grubb, Dennis G.
Davis, Atwood F.
Sands, Steven C.
Carnivale, Michael III
Wartman, Joseph
Gallagher, Patricia M.
Keywords: Field tests;Recycling;Dredge spoils;Physical properties;Soil mixing;Embankment;Cone penetration tests
Issue Date: Jan-2007
Publisher: American Society of Civil Engineers (ASCE)
Citation: Journal of Geotechnical and Geoenvironmental Engineering, 133(1): pp. 127-128.
Abstract: Based on the laboratory results reported in a companion paper, three crushed glass–dredged material CG–DM blends were prepared and evaluated in the field to explore the feasibility of using CG–DM blends in general, embankment and structural fill applications. A trailer-mounted pugmill successfully prepared 20/ 80, 50/ 50, and 80/20 CG–DM blends dry weight percent CG content reported first within a tolerance of ±5 dry % by weight of the targeted percentages. Blending criteria were routinely met at pugmill throughputs up to 1,500 m3 / day. The constructed 20/80 CG–DM embankment was compacted to a minimum of 90% modified Proctor compaction, whereas the 50/50 and 80/20 CG–DM embankments were constructed to a minimum of 95% modified Proctor compaction. Twenty to 80% CG addition to DM resulted in 1.5–5.5 kN/m3 increases in field dry densities above 100% DM, densities not achievable with other DM stabilization techniques such as Portland cement, fly ash, and/or lime PC/FA/lime addition. CG substantially improved the workability of DM allowing construction with conventional equipment and three person crew while achieving very consistent and reproducible results during a timeline of frequent and heavy precipitation events. The 20/ 80, 50/ 50, and 80/20 CG–DM embankments were characterized by average cone tip resistances on the order of 1.0, 1.5, and 2.0 MPa, respectively. An environmental evaluation of 100% CG, DM and 50/50 CG–DM blend samples coupled with an economic analysis of a scaled-up commercial application illustrated that the CG–DM blending approach is potentially more cost effective than PC/FA/lime stabilization approaches. These features of CG–DM blending make the process attractive for use in urban and industrial settings.
URI: http://dx.doi.org/10.1061/(ASCE)1090-0241(2006)132:5(577)
http://hdl.handle.net/1860/1639
Appears in Collections:Faculty Research and Publications (CAEE)

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