Effects of seawater and sea-sand on the behaviour of FRP-confined concrete

G. M. Chen, Z. B. He, T. Jiang, J. F. Chen, J. G. Teng

Research output: Unpublished conference presentation (presented paper, abstract, poster)Conference presentation (not published in journal/proceeding/book)Academic researchpeer-review


This paper presents the results of a series of compression tests on FRP-confined concrete that was cast with seawater or sea-sand or both. A total of 48 standard concrete cylinders were tested in four series: reference normal concrete, sea-sand concrete, seawater concrete and seawater/sea-sand concrete. The concrete cylinders were either unconfined or confined with a 1-ply or 2-ply CFRP jacket. The unconfined specimens were tested at ages of 7 and 28 days and the confined specimens were tested at the age of 28 days. The test results show that concrete made with seawater and/or sea-sand developed a higher strength than normal concrete at the ages of 7 and 28 days. The test results also show that the four types of concrete have similar stress-strain behavior when confined with FRP; the use of seawater and sea-sand does not appear to have a significant effect on the effectiveness of FRP confinement.

Original languageEnglish
Publication statusPublished - 1 Jan 2017
Event6th Asia-Pacific Conference on FRP in Structures, APFIS 2017 - Singapore, Singapore
Duration: 19 Jul 201721 Jul 2017


Conference6th Asia-Pacific Conference on FRP in Structures, APFIS 2017


  • Confinement
  • FRP
  • Sea-sand concrete
  • Seawater concrete
  • Seawater/sea-sand concrete

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Materials Science(all)

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