Performance of dredged sediments based controlled low-strength material

Abstract

The process of depleting the natural sources of virgin sand and aggregate makes it challenging to satisfy the demand for construction work. Therefore, in a context of sustainable construction, this study examined the feasibility of utilizing dredged sediments (DS) as a substitute for sand in non-structural controlled low-strength materials (CLSM). A total of two types of dredged sediments, coarser and finer, were collected from two different sources. Then, nine CLSM mixtures were prepared by using different proportions of natural sand (virgin sand) and dredged sediments. Each mixture was tested for flowability, unconfined compressive strength, density and excavatability. Flow consistency decreased with the amount of dredged sediments and presence of finer material in CLSM. Strength results were found within required specification for all nine CLSM tested in this study. Overall, flow consistency, strength and excavatability were found dependent on the characteristics of dredged sediments. This study showed that dredged sediments can be successfully used as a sand substitute for CLSM production.

Keywords

• dredged
• stabilization
• flowable fill
• concrete
• excavatability

References

1. 1. ACI 229R (2013). Report on Controlled Low-Strength Materials, American Concrete Institute, Farmington Hills, MI.
2. 2. Costa-Pierce, B. A. and Weinstein, M. P. (2002). ‘Use of dredge materials for coastal restoration’, Ecological Engineering. Elsevier, pp. 181–186. doi: 10.1016/S0925-8574(02)00076-9.
3. 3. Dia, M. (2014). ‘Effect of chemical and thermal treatment on the geotechnical properties of dredged sediment’, Procedia Engineering. Elsevier B.V., 83(5), pp. 159–169. doi: 10.1016/j.proeng.2014.09.034.
4. 4. Great Lakes Commission (2001), Waste to Resource: Beneficial Use of Great Lakes Dredged Material, Habitat and Coastal, Library, Soil Erosion and Dredging, Aug. 2001, Ann Arbor, MI, Retrieved from https://www.glc.org/library/2001-waste-to-resource-beneficial-use-of-great-lakes-dredged-material
5. 5. IDOT (2016), Standard Specification for Road and Bridge Construction, Illinois Department of Transportation, Springfield, Illinois.
6. 6. Lee, C. R., Brandon, D. L., & Price, R. A. (2007). Manufactured Soil Field Demonstration for Constructing Wetlands to Treat Acid Mine Drainage on Abandoned Minelands, U.S. Army Corps of Engineers. Available at: https://apps.dtic.mil/sti/pdfs/ADA474492.pdf (Accessed: 30 November 2020).
7. 7. Lim, Y. C. (2019). ‘Reutilization of dredged harbor sediment and steel slag by sintering as lightweight aggregate’, Process Safety and Environmental Protection. Institution of Chemical Engineers, pp. 287–296. doi: 10.1016/j.psep.2019.04.020.
8. 8. Limeira, J. (2011). ‘Mechanical and durability properties of concrete made with dredged marine sand’, Construction and Building Materials. Elsevier Ltd, 25(11), pp. 4165–4174. doi: 10.1016/j.conbuildmat.2011.04.053.

9. 9. McNeil, D. (2019), Private Sector Perspective, Beneficial Use of Dredged Material Workshop, September 4, 2019, Peoria, IL.
10. 10. Medeiros, M. H. F. (2013). ‘Reinforced concrete in marine environment: Effect of wetting and drying cycles, height and positioning in relation to the sea shore’, Construction and Building Materials. Elsevier Ltd, 44, pp. 452–457. doi: 10.1016/j.conbuildmat.2013.02.078.
11. 11. Mostafa, Y. E. S. (2012). ‘Environmental impacts of dredging and land reclamation at Abu Qir Bay, Egypt’, Ain Shams Engineering Journal. Faculty of Engineering, Ain Shams University, 3(1), pp. 1–15. doi: 10.1016/j.asej.2011.12.004.
12. 12. Naik, T.R., Kraus, R.N., Carty, R.H. (2002). Use of Ponded Fly Ash and Crushed Sand for Flowable Slurry. Report No. CBU-2002-10. Center for By-Product Utilization, University of Wisconsin, Milwaukee, Wisconsin.
13. 13. NRMCA (2006), Guide Specification for Controlled Low Strength Materials (CLSM), Specification Guide, National Ready Mixed Concrete Association, 2006. Retrieved from http://www.flowablefill.org/downloads/CLSMSpecifications1.pdf
14. 14. Park, J. (2016). ‘The suitability evaluation of dredged soil from reservoirs as embankment material’, Journal of Environmental Management. Elsevier Ltd, 183, pp. 443–452. doi: 10.1016/j.jenvman.2016.08.063.
15. 15. Sheehan, C., & Harrington, J. (2012). ‘Management of dredge material in the Republic of Ireland - A review’, Waste Management. Elsevier Ltd, 32(5), pp. 1031–1044. doi: 10.1016/j.wasman.2011.11.014.
16. 16. United States Army Corps of Engineers (USACE) (2015). ‘Dredging and dredged material management’, U.S. Environmental Protection Agency, (July), p. 920. Available at: http://www.publications.usace.army.mil/Portals/76/Publications/EngineerManuals/EM_1110-2-5025.pdf
17. 17. USEPA & USACE (2007). ‘Identifying, Planning, Financing Beneficial Use Projects Using Dredged Material: Beneficial Use Planning Manual’, Epa842-B-07-001, (U.S. Environmental Protection Agency & U.S. Army Corps of Engineers), p. 81.