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Please use this identifier to cite or link to this item: http://hdl.handle.net/1860/1648

Title: Laboratory evaluation of crushed glass dredged material blends
Authors: Grubb, Dennis G.
Gallagher, Patricia M.
Wartman, Joseph
Liu, Yigang
Carnivale, Michael III
Keywords: Laboratory tests;Recycling;Glass;Dredge spoils;Physical properties;Soil mixing
Issue Date: 2006
Publisher: American Society of Civil Engineers (ASCE)
Citation: Journal of Geotechnical and Geoenvironmental Engineering, 132(5): pp. 562-576.
Abstract: A comprehensive laboratory evaluation of blending 9.5 mm 3/8 in. minus curbside-collected crushed glass CG with dredged material DM was conducted to evaluate their potential for beneficial use as fill materials for urban applications. Tests were performed on 100% CG USCS classification SP and 100% DM OH specimens and 20/ 80, 40/ 60, 50/ 50, 60/ 40, and 80/20 CG–DM blends dry weight percent CG content reported first . The addition of 20% CG resulted in a 10–20 point 33–67% reduction in wopt while increasing the dry density by approximately 1–3 kN/m3 for standard and modified levels of compaction, respectively. Simultaneously, the compressibility of the DM was reduced by approximately 50% and the hydraulic conductivity was reduced by 1 2 order of magnitude. The addition of 20% CG significantly decreased the moisture content and significantly improved the workability of the 100% DM, where workability refers to the ease of handling, transport, placement, and compaction of the CG–DM blends compared to 100% DM . CIŪ triaxial strength testing indicated effective friction angles of 34 and 37° for 100% DM and CG compacted to a minimum of 95% relative compaction by ASTM D1557, respectively. A peak effective friction angle of 39° occurred for the 60/40 and 80/20 CG–DM blends which were also 1 and 3 orders of magnitude more permeable than 100% DM, respectively. Related increases in cv resulted in decreased times required for consolidation. The range of properties obtainable by the CG–DM blends offers a versatility that allows for the design of fills that can be potentially optimized to meet multiple design parameters e.g. strength, settlement, drainage, or higher CG or DM content .
URI: http://dx.doi.org/10.1061/(ASCE)1090-0241(2006)132:5(562)
Appears in Collections:Faculty Research and Publications (CAEE)

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