NDLI: The Use of Dredged Sediments as Sand in the Mortars for Tunnel Lining and for Environmental Protection

Content Provider	Springer Nature Link
Author	Kazi Aoual Benslafa, Fatiha Kerdal, Djamel Mekerta, Belkacem Semcha, Abdelaziz
Copyright Year	2013
Abstract	The economic activity of many ports in Algeria is hampered by the natural phenomenon of sediment accumulation. Dredging is a necessity; however, the storage of the dredged sediments (DS) is a problem for harbour managers. The easy and low-cost solution of dumping sediments at sea raises environmental concerns that could eventually be alleviated by considering these sediments as a new source of construction materials. This would contribute to the reduction of marine pollution and thus give harbour managers the opportunity to be part of the sustainable development approach. This paper examines the feasibility of using DS from the Port of Oran as partial replacement of sand in mortars. The physical, chemical and mineralogical properties of DS were determined after a zoning study was made. DS were treated in order to reduce their salt and water contents so that they could be used as a partial substitution of the sand in the composition of the mortars. The mechanical and durability properties of mortars fabricated by substituting 10, 15 and 20 % of sand mass by DS were determined and compared to those of the reference mortar. The compressive strengths of a first set of mortar specimens were determined after 7, 28, 60 and 90 days of moist curing. The second set of mortar specimens that were submitted to chemical attacks and their residual compressive strengths at 118 days were determined. So far, the preliminary laboratory tests show that partial replacement of 20 % of sand by DS in mortars gives good results.
Starting Page	2483
Ending Page	2493
Page Count	11
File Format	PDF
ISSN	13198025
Journal	Arabian Journal for Science and Engineering
Volume Number	39
Issue Number	4
e-ISSN	21914281
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-09-07
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Sustainable development Dredged sediments Tunnel lining Mortars Mechanical properties Durability Engineering Science
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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