Ballivy, (2009) “The use of marine sediments as a pavement base material" Waste Management 29(2): 774–782. Semcha, (2015) “Durability of mortars made with dredged sediments" Procedia engineering 118: 240–250. Caputo, (2017) “Mechanical and chemical properties of composite materials made of dredged sediments in a fly-ash based geopolymer" Journal of Environmental Management 191: 1–7. Keywords: immobilization, dredge material, mortar, TCLP Likewise, after immobilization, TCLP results show that the leachability of the mortar mix is below the standard limit set. After 28 days of curing time, the optimum mortar mix was 10% dredge material and 90% sand by weight with a compressive strength of 17.6 MPa. Through the immobilization technique, an optimized mortar mixture was determined. Furthermore, particle size distribution showed that the material is in the range of clay to sandy making it a good substitute for sand. Toxicity Characterization Leaching Procedure (TCLP) test shows that heavy metals from the dredged material can leach out into the environment if not treated or disposed of properly. Moreover, XRF and XRD analyses indicate the presence of quartz, iron, and silicon dioxide. Based on the characterization of the dredged material, it contains organic and inorganic compounds and heavy metals such as cadmium, chromium, and lead. ![]() This contaminated dredged material can be used as a partial substitute for sand in mortar mix. ![]() This material is an environmental concern due to the considerable amount of contaminants it may carry. ![]() Dredged material is composed of soil or sediment that may contain inorganic or organic pollutants such as heavy metals, volatile organic compounds, and persistent organic pollutants.
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