Strength, shrinkage, and permeability performance of seawater concrete

Adel Younis, Usama Ebead, Prannoy Suraneni, Antonio Nanni

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Given the increasing global concern of freshwater scarcity, the use of seawater in concrete mixtures appears to be a way forward towards achieving sustainable concrete, especially in the case of non-reinforced concrete applications or with the use of noncorrosive reinforcement. This paper reports on the results of an experimental study to compare the freshwater- and seawater-mixed concretes in terms of their strength, shrinkage and permeability performance. The experimental program included the following: (i) compressive strength test (at 3, 7, 28, and 56-day ages); (ii) concrete shrinkage test (at Days 4, 7, 14, 21, 28, and 56 following mixing); and (iii) permeability tests (rapid chloride permeability and water absorption at Days 28 and 56 following mixing). As for the study results, seawater concrete showed a slightly higher early-age (i.e., till Day 7) strength performance than that of freshwater-mixed counterpart, followed by a strength performance that is 7–10% inferior to the freshwater concrete after 28 days or later. Also, the shrinkage of seawater concrete was slightly higher than that of freshwater concrete, with a difference of 5% reported after 56 days following mixing. Finally, the permeability performance of hardened concrete in seawater and freshwater mixtures was similar.

Original languageEnglish (US)
Title of host publicationISEC 2019 - 10th International Structural Engineering and Construction Conference
EditorsDidem Ozevin, Hossein Ataei, Mehdi Modares, Asli Pelin Gurgun, Siamak Yazdani, Amarjit Singh
PublisherISEC Press
ISBN (Electronic)9780996043762
DOIs
StatePublished - 2019
Event10th International Structural Engineering and Construction Conference, ISEC 2019 - Chicago, United States
Duration: May 20 2019May 25 2019

Publication series

NameISEC 2019 - 10th International Structural Engineering and Construction Conference

Conference

Conference10th International Structural Engineering and Construction Conference, ISEC 2019
CountryUnited States
CityChicago
Period5/20/195/25/19

Keywords

  • Compressive strength
  • Rapid chloride permeability
  • Seawater-mixed concrete
  • Shrinkage test
  • Sustainability
  • Water absorption

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction

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