Tests of seawater and sea sand concrete (SWSSC) filled stainless steel (SS) and GFRP tubes

Yinglei Li, Yaoyuan Zhang, Ruifeng Nie, Xiao Ling Zhao, Raman Raghuvir Kumar Singh, Saad Hamood Mohaissn Al-Saadi, Jin-Guang Teng

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review


This paper presents a development of seawater and sea sand concrete (SWSSC) which is used together with fibre reinforced polymer (FRP) and stainless steel to form composite tubular sections. Industry waste (slag) was used to replace Portland cement in making geo-polymer SWSSC. The 316 grade stainless steel was adopted and the GFRP tube was fabricated by the process of filament winding with various glass fiber orientations. A series of tests were conducted on SWSSC-filled stainless steel and GFRP circular tubes under axial compression. During the test, both the core concrete and encased tubes were loaded simultaneously. After reaching the peak load, concrete-filled stainless steel tubes could sustain the load steadily. GFRP tube rapture was found to be the final failure mode of SWSSC-filled GFRP tubes. The test results showed that the strength of the core SWSSC was greatly enhanced due to the confinement effect provided by the stainless steel tube and GFRP tubes. Finally, the experimental ultimate load carrying capacity of SWSSC-filled tubes are compared with predicted capacities.
Original languageEnglish
Title of host publicationProceedings of the 11th International Conference on Advances in Steel-Concrete Composite Structures (ASCCS 2015)
EditorsLin-Hai Han, Wei Li, Dennis Lam
Place of PublicationBeijing China
PublisherTsinghua University Press
Pages1 - 7
Number of pages7
Publication statusPublished - 2015
EventASCCS International Conference on Steel-Concrete Composite and Hybrid Structures 2015 - Wenjin Hotel, Beijing, China
Duration: 3 Dec 20155 Dec 2015
Conference number: 11th


ConferenceASCCS International Conference on Steel-Concrete Composite and Hybrid Structures 2015
Abbreviated titleASCCS 2015
Internet address


  • Concrete-filled tubes
  • Stainless steel
  • FRP
  • Compressive strength

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