TY - GEN
T1 - Tensile and Compressive Performance of High-Strength Engineered Cementitious Composites (ECC) with Seawater and Sea-Sand
AU - Yu, Jing
AU - Huang, Bo Tao
AU - Wu, Jia Qi
AU - Dai, Jian Guo
AU - Leung, Christopher K.Y.
N1 - Funding Information:
Acknowledgements. This study was financially supported by the Hong Kong Research Grants Council (No.: T22-502/18-R) and the National Key Research Program of China (No.: 2017YFC0703403). The authors also thank Dr. Yu Xiang, Mr. Ji-Xiang Zhu and Mr. Ke-Fan Weng for their assistance in the experiment.
Publisher Copyright:
© 2021, RILEM.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/11
Y1 - 2020/11
N2 - 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.
AB - 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.
KW - Engineered cementitious composite
KW - Fiber-reinforced concrete
KW - Marine infrastructures
KW - Sea-sand
KW - Seawater
KW - Strain-hardening cementitious composite
KW - Tensile performance
UR - http://www.scopus.com/inward/record.url?scp=85097220641&partnerID=8YFLogxK
U2 - 10.1007/978-3-030-58482-5_91
DO - 10.1007/978-3-030-58482-5_91
M3 - Conference article published in proceeding or book
AN - SCOPUS:85097220641
SN - 9783030584818
T3 - RILEM Bookseries
SP - 1034
EP - 1041
BT - Fibre Reinforced Concrete
A2 - Serna, Pedro
A2 - Llano-Torre, Aitor
A2 - Martí-Vargas, José R.
A2 - Navarro-Gregori, Juan
PB - Springer Science and Business Media B.V.
T2 - RILEM-fib International Symposium on FRC, BEFIB 2020
Y2 - 21 September 2020 through 23 September 2020
ER -