Properties and Application of Sea Sand in Sea Sand–Seawater Concrete

AbstractContradictory results have been published on the effect of sea sand and seawater in concrete as opposed to conventional river sand and freshwater. The majority of studies show equivalent, if not better, results when sea sand and seawater are used in concrete, although some studies concluded...

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Bibliographic Details
Published in:Journal of materials in civil engineering 2020-12, Vol.32 (12)
Main Authors: Dhondy, T, Remennikov, A, Neaz Sheikh, M
Format: Article
Language:English
Subjects:
Building materials
Chemical properties
Civil engineering
Compressive strength
Concrete
Mechanical properties
Optical microscopes
Optical properties
Particle size distribution
Physical properties
Sand
Seawater
Technical Papers
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Summary:AbstractContradictory results have been published on the effect of sea sand and seawater in concrete as opposed to conventional river sand and freshwater. The majority of studies show equivalent, if not better, results when sea sand and seawater are used in concrete, although some studies concluded otherwise. This paper investigates the variations in the chemical and physical properties of sea sand. It has been found that each sea sand sample is unique, which might be the reason for the contradictory findings in the current literature. Chemical properties of sea sand were analyzed using a scanning electron microscope and the physical properties were observed using an optical microscope. The particle size distribution was measured. The short-term mechanical properties of sea sand–seawater concrete were compared with conventional concrete. The concrete samples were cured in natural marine conditions and atmospheric conditions and tested at 7 and 28 days. Sea sand–seawater concrete had a high early compressive strength at 7 days and remained slightly higher than conventional concrete at 28 days. The experimental procedure used all natural, unaltered, concrete constituents and curing conditions.
ISSN:0899-1561
1943-5533
DOI:10.1061/(ASCE)MT.1943-5533.0003475