Properties of Portland cement made from contaminated sediments

Jennifer L. Dalton, Kevin H. Gardner, Thomas Seager, Mindy L. Weimer, Jean C M Spear, Bryan J. Magee

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

Hundreds of millions of cubic meters of contaminated sediments are dredged from US harbors and waterways annually for maintenance of navigation, environmental remediation, or both. In recent years, inexpensive ocean dumping has been largely eliminated as a disposal alternative causing a crisis in the management of sediment. This paper presents a new beneficial use alternative for contaminated dredged material, which is to use dredged material as a feedstock in the conventional manufacture of Portland cement. The paper demonstrates the efficacy of the process at the bench and pilot scales, and presents a summary of practical and economic considerations. A bench scale manufacture was carried out with feedstock mixtures containing 1-12% dredged material from the New York/New Jersey (NY/NJ) harbor. The clinkers were quantitatively analyzed with X-ray powder diffraction and differences in phase concentrations were observed in the clinker samples manufactured with dredged material (decreased alite and increased belite) suggesting that additional burn time was needed to account for the quartz present in the sediments. The free chloride concentrations in the clinker samples were below ACI limits for cement used with reinforcing steel; however, the chloride in the dredged material remains a manufacturing concern and is expected to increase annual maintenance costs. A pilot scale manufacture was carried out in a batch rotary kiln; X-ray diffraction analysis and ASTM tests for strength, soundness, and setting time suggested that with better optimized burning conditions, dredged material can be successfully incorporated into full scale manufacture.

Original languageEnglish (US)
Pages (from-to)227-241
Number of pages15
JournalResources, Conservation and Recycling
Volume41
Issue number3
DOIs
StatePublished - Jun 2004
Externally publishedYes

Fingerprint

Portland cement
Sediments
cement
sediment
Ports and harbors
Feedstocks
Ocean dumping
harbor
ocean dumping
X-ray diffraction
chloride
Rotary kilns
Waste disposal
X ray powder diffraction
X ray diffraction analysis
navigation
dredged material
Cement
Quartz
Cements

Keywords

  • Beneficial use
  • Cement manufacturing
  • Contaminated sediment
  • Dredged material
  • X-ray diffraction

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Management, Monitoring, Policy and Law
  • Waste Management and Disposal

Cite this

Dalton, J. L., Gardner, K. H., Seager, T., Weimer, M. L., Spear, J. C. M., & Magee, B. J. (2004). Properties of Portland cement made from contaminated sediments. Resources, Conservation and Recycling, 41(3), 227-241. https://doi.org/10.1016/j.resconrec.2003.10.003

Properties of Portland cement made from contaminated sediments. / Dalton, Jennifer L.; Gardner, Kevin H.; Seager, Thomas; Weimer, Mindy L.; Spear, Jean C M; Magee, Bryan J.

In: Resources, Conservation and Recycling, Vol. 41, No. 3, 06.2004, p. 227-241.

Research output: Contribution to journalArticle

Dalton, Jennifer L. ; Gardner, Kevin H. ; Seager, Thomas ; Weimer, Mindy L. ; Spear, Jean C M ; Magee, Bryan J. / Properties of Portland cement made from contaminated sediments. In: Resources, Conservation and Recycling. 2004 ; Vol. 41, No. 3. pp. 227-241.
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