Tensile and Compressive Performance of High-Strength Engineered Cementitious Composites (ECC) with Seawater and Sea-Sand

Jing Yu, Bo Tao Huang, Jia Qi Wu, Jian Guo Dai, Christopher K.Y. Leung

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Marine infrastructures play an important role in the social-economic development of coastal cities. However, the shortage of river/manufactured sand and fresh water is a major challenge for producing concrete on site, as the transportation of these materials is not only costly but also environmentally unfriendly, while desalination of sea-sand and seawater is also pricey. Seawater sea-sand Engineered Cementitious Composites (SS-ECC) have a great potential for marine/coastal applications; but the present knowledge on SS-ECC is extremely limited. This study aims to explore the feasibility of producing high-strength SS-ECC. The effects of key composition parameters including the length of polyethylene (PE) fibers (6 mm, 12 mm, and 18 mm) and the maximum size of sea-sand (1.18 mm, 2.36 mm, and 4.75 mm) on the mechanical performance of SS-ECC were investigated. SS-ECC with compressive strength over 130 MPa, tensile strength over 8 MPa and ultimate tensile strain about 5% were achieved. Test results also showed that the tensile strain capacity increased with increasing fiber length, while sea-sand size had limited effects on the tensile performance of SS-ECC. The findings provide insights into the future design and applications of ECC in marine infrastructures for improving safety, sustainability, and reliability.

Original languageEnglish
Title of host publicationFibre Reinforced Concrete
Subtitle of host publicationImprovements and Innovations - RILEM-fib International Symposium on FRC BEFIB in 2020
EditorsPedro Serna, Aitor Llano-Torre, José R. Martí-Vargas, Juan Navarro-Gregori
PublisherSpringer Science and Business Media B.V.
Pages1034-1041
Number of pages8
ISBN (Print)9783030584818
DOIs
Publication statusPublished - 2021
EventRILEM-fib International Symposium on FRC, BEFIB 2020 - Valencia, Spain
Duration: 21 Sep 202023 Sep 2020

Publication series

NameRILEM Bookseries
Volume30
ISSN (Print)2211-0844
ISSN (Electronic)2211-0852

Conference

ConferenceRILEM-fib International Symposium on FRC, BEFIB 2020
CountrySpain
CityValencia
Period21/09/2023/09/20

Keywords

  • Engineered cementitious composite
  • Fiber-reinforced concrete
  • Marine infrastructures
  • Sea-sand
  • Seawater
  • Strain-hardening cementitious composite
  • Tensile performance

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials

Cite this