The rapid industrial development has led to a global shortage of fresh water and river sand. A promising solution involves using seawater and sea-sand as alternative raw materials to produce seawater sea-sand concrete (SSC), and using fiber-reinforced polymer (FRP) owing excellent corrosion resistance as confinement material to produce FRP-confined SSC with reasonable performance. This study aims to investigate the axial compressive behavior of FRP-confined SSC experimentally and evaluate the existing predictive models. A total of 48 short columns and 48 standard cubes were tested. The studied parameters in the experiments covered the type of concrete as well as the type and thickness of FRP. The test results indicated that concretes incorporating seawater exhibited higher early-age strength but comparable 28-day strength to normal concrete; under the same FRP confinement condition, different types of concrete showed similar behavior, including dilation performance, axial stress-strain response and ultimate condition. It can be deduced that seawater and sea-sand substitutions have negligible influence on the performance of FRP-confined concrete. Moreover, a database including existing FRP-confined SSC specimens was established and used to evaluate the applicability of existing analysis-oriented models for FRP-confined SSC. The results showed that the model developed by Jiang and Teng demonstrates the highest predictive accuracy.
AireCGettuRCasasJR, et al. (2010) Concrete laterally confined with fibre-reinforced polymers (FRP) experimental study and theoretical. Materiales de Construcción60(297): 19–31.
2.
ASTM C33 C33M-18 (2018) Standard Specification for Concrete Aggregates. West Conshohocken: ASTM.
3.
ASTM D3039 (2014) Standard Test Method for Tensile Properties of Polymer Matrix Composite Materials. West Conshohocken: ASTM.
4.
BazliMZhaoXLBaiY, et al. (2019) Bond-slip behaviour between FRP tubes and seawater sea sand concrete. Engineering Structures197: 109421.
5.
BazliMZhaoXLSingh RamanRK, et al. (2020) Bond performance between FRP tubes and seawater sea sand concrete after exposure to seawater condition. Construction and Building Materials265: 120342.
6.
BertoliniLBolzoniFPedeferriP, et al. (1998) Cathodic protection and cathodic prevention in concrete: principles and applications. Journal of Applied Electrochemistry28(12): 1321–1331.
7.
BS 882-1992 (1992) Specification for Aggregates from Natural Sources for Concrete. London: British Standard Institution.
8.
CarreiraDJChuKH (1985) Stress-strain relationship for plain concrete in compression. American Concrete Institute Journal6(82): 794–804.
9.
ChenGMLiuPCJiangT, et al. (2020) Effects of natural seawater and sea-sand on the compressive behaviour of unconfined and carbon fibre-reinforced polymer-confined concrete. Advances in Structural Engineering23(14): 3102–3116.
10.
CuiMMaoJJiaD, et al. (2014) Experimental study on mechanical properties of marine sand and seawater concrete. In: 2014 International Conference on Mechanics and Civil Engineering (icmce-14) (pp. 106–111). Atlantis Press.
11.
DengDYLinLBZhouYW, et al. (2024) Pullout behavior of recycled macro fibers embedded in ultra-high performance seawater sea-sand concrete. Journal of Building Engineering98: 111193.
12.
DhondyTRemennikovANeaz SheikhM (2020) Properties and application of sea sand in sea sand-seawater concrete. Journal of Materials in Civil Engineering32(12): 04020392.
13.
GB/T 50081-2019 (2019) Standard for Test Method of Concrete Physical and Mechanical Properties China National Standard. Beijing, China: Ministry of Construction.
14.
GeLFengZSayedU, et al. (2023) Research on the performance of seawater sea-sand concrete: a review. Construction and Building Materials409: 133921.
15.
GhorabHYHilalMSAntarA (1990) Effect of mixing and curing waters on the behaviour of cement pastes and concrete part 2: properties of cement paste and concrete. Cement and Concrete Research20(1): 69–72.
16.
GoyalAPouyaHSGanjianE, et al. (2018) A review of corrosion and protection of steel in concrete. Arabian Journal for Science and Engineering43(10): 5035–5055.
17.
HuJYLiSLuYY, et al. (2020) Efficiency of electrochemical extraction of chlorides in fly ash concrete using carbon fibre mesh anode. Construction and Building Materials20(249): 118717.
18.
HuangBTWangYTWuJQ, et al. (2021) Effect of fiber content on mechanical performance and cracking characteristics of ultra-high-performance seawater sea-sand concrete (UHP-SSC). Advances in Structural Engineering24(6): 1182–1195.
19.
JianCLTogayO (2015) Unified stress-strain model for FRP and actively confined normal-strength and high-strength concrete. Journal of Composites for Construction4(19): 04014072.
KaushikSKIslamS (1995) Suitability of seawater for mixing structural concrete exposed to a marine environment. Cement and Concrete Composites17(3): 177–185.
22.
LamLTengJG (2003) Design-oriented stress-strain model for FRP confined concrete. Construction and Building Materials17(6-7): 471–489.
23.
LamLTengJG (2004) Ultimate condition of fiber reinforced polymer-confined concrete. Journal of Composites for Construction8(6): 539–548.
24.
LamLTengJGCheungCH, et al. (2006) FRP confined concrete under axial cyclic compression. Cement and Concrete Composites28(10): 949–958.
25.
LiPDWuYF (2023) Damage evolution and full-field 3D strain distribution in passively confined concrete. Cement and Concrete Composites138: 104979.
26.
LiYLZhaoXL (2020) Hybrid double tube sections utilising seawater and sea sand concrete, FRP and stainless steel. Thin-Walled Structures149: 106643.
27.
LiYLZhaoXLRaman SinghRK, et al. (2016a) Tests on seawater and sea sand concrete-filled CFRP, BFRP and stainless steel tubular stub columns. Thin-Walled Structures108: 163–184.
28.
LiYLZhaoXLSinghRKR, et al. (2016b) Experimental study on seawater and sea-sand concrete filled GFRP and stainless steel tubular stub columns. Thin-Walled Structures106: 390–406.
29.
LiYLTengJGZhaoXL, et al. (2018a) Theoretical model for seawater and sea sand concrete-filled circular FRP tubular stub columns under axial compression. Engineering Structures160: 71–84.
30.
LiYLZhaoXLSingh RamanRK (2018b) Mechanical properties of seawater and sea sand concrete-filled FRP tubes in artificial seawater. Construction and Building Materials191: 977–993.
31.
LiTYLiuXYZhangYM, et al. (2020) Preparation of seawater sea-sand high performance concrete (SHPC) and serving performance study in marine environment. Construction and Building Materials254: 119114.
32.
LiYLZhaoXLRamanRS (2021) Durability of seawater and sea sand concrete and seawater and sea sand concrete–filled fibre-reinforced polymer/stainless steel tubular stub columns. Advances in Structural Engineering24(6): 1074–1089.
33.
LiPDGaoSJWuYF (2024) Stress distribution in concrete with nonuniform passive FRP confinement. Journal of Composites for Construction28(6): 04024052.
34.
LiaoJZengJJBaiYL, et al. (2022) Bond strength of GFRP bars to high strength and ultra-high strength fiber reinforced seawater sea-sand concrete (SSC). Composite Structures281: 115013.
35.
LuYYHuJYLiS, et al. (2018) Active and passive protection of steel reinforcement in concrete column using carbon fibre reinforced polymer against corrosion. Electrochimica Acta278: 124–136.
36.
ManderJBPriestleyMParkR (1998) Theoretical stress-strain model for confined concrete. Journal of Structural Engineering8(114): 1804–1826.
37.
MarquesSPCMarquesDCDSLinsDSJ, et al. (2004) Model for analysis of short columns of concrete confined by fiber-reinforced polymer. Journal of Composites for Construction8(4): 332–340.
38.
MirmiranAShahawyM (1997a) Dilation characteristics of confined concrete. Mechanics of Cohesive-Frictional Materials3(2): 237–249.
39.
MirmiranAShahawyM (1997b) Behavior of concrete columns confined by fiber composites. Journal of Structural Engineering5(123): 583–590.
40.
NevilleA (2004) The confused world of sulfate attack on concrete. Cement and Concrete Research34(8): 1275–1296.
41.
NishidaTOtsukiNOharaH, et al. (2015) Some considerations for applicability of seawater as mixing water in concrete. Journal of Materials in Civil Engineering27(7): B4014004.
42.
NisticòNPalliniFRousakisT, et al. (2014) Peak strength and ultimate strain prediction for FRP confined square and circular concrete sections. Composites Part B: Engineering67: 543–554.
43.
NobuakiOTSY (2012) Possibility of seawater as mixing water in concrete. Journal of Civil Engineering and Architecture6(10): 1273–1279.
44.
OzbakkalogluTLimJCVincentT (2013) FRP confined concrete in circular sections: review and assessment of stress-strain models. Engineering Structures49: 1068–1088.
45.
PopovicsS (1973) A numerical approach to the complete stress-strain curves for concrete. Cement and Concrete Research5(3): 583–589.
46.
RazviSSaatciogluM (1999) Confinement model for high-strength concrete. Journal of Structural Engineering3(125): 281–289.
47.
RichartFEBrandtzaegABrownRL (1928) A study of the failure of concrete under combined compressive stressesUniversity of Illinois. Engineering Experiment Station. Bulletin; no. 185.
48.
SalehSMahmoodAHHamedE, et al. (2023) The mechanical, transport and chloride binding characteristics of ultra-high-performance concrete utilising seawater, sea sand and SCMs. Construction and Building Materials372: 130815.
49.
SpoelstraMRMontiG (1999) FRP confined concrete model. Journal of Composites for Construction3(3): 143–150.
50.
TengJGHuangYLLamL, et al. (2007) Theoretical model for fiber-reinforced polymer-confined concrete. Journal of Composites for Construction11(2): 201–210.
51.
TengJGYuTDaiJG, et al. (2011) FRP composites in new construction: current status and opportunities. In: Proceedings of 7th National Conference on FRP Composites in Infrastructure (Supplementary Issue of Industrial Construction), Keynote Presentation, Hangzhou, China.
52.
TengJGXiangYYuT, et al. (2019) Development and mechanical behaviour of ultra-high-performance seawater sea-sand concrete. Advances in Structural Engineering22(14): 3100–3120.
53.
WegianFM (2010) Effect of seawater for mixing and curing on structural concrete. The IES Journal Part A: Civil & Structural Engineering4(3): 235–243.
54.
WeiYBaiJWZhangYR, et al. (2021) Compressive performance of high-strength seawater and sea sand concrete-filled circular FRP-Steel composite tube columns. Engineering Structures240: 112357.
55.
XiaoQGTengJGYuT (2010) Behavior and modeling of confined high-strength concrete. Journal of Composites for Construction14(3): 249–259.
56.
XiaoJQiangCNanniA, et al. (2017) Use of sea-sand and seawater in concrete construction: current status and future opportunities. Construction and Building Materials155: 1101–1111.
57.
YangJLLuSWWangJZ, et al. (2020a) Behavior of CFRP partially wrapped square seawater sea-sand concrete columns under axial compression. Engineering Structures222: 111119.
YuanFSongJWuY (2023) Effect of compression casting method on the axial compressive behavior of FRP confined seawater sea-sand concrete columns. Engineering Structures290: 116311.
60.
ZengJJDuanZJGaoWY, et al. (2020a) Compressive behavior of FRP-Wrapped seawater sea-sand concrete with a square cross-section. Construction and Building Materials262: 120881.
61.
ZengJJGaoWYDuanZJ, et al. (2020b) Axial compressive behavior of polyethylene terephthalate/carbon FRP confined seawater sea-sand concrete in circular columns. Construction and Building Materials234: 117383.
62.
ZhaoYHuXShiC, et al. (2021) A review on seawater sea-sand concrete: mixture proportion, hydration, microstructure and properties. Construction and Building Materials295: 123602.
63.
ZhouYWLiMLSuiLL, et al. (2016) Effect of sulfate attack on the stress-strain relationship of FRP confined concrete. Construction and Building Materials110: 235–250.
