基于海水海砂混凝土真实孔溶液浸泡环境下BFRP筋拉伸性能的退化

doi:10.11896/cldb.23030043

Abstract
Figure/Table
References
Related Citation (15)

Download:

Full Text ( PDF ) (31209KB)
Export: BibTeX | EndNote (RIS)

Abstract In order to study the long-term mechanical properties of basalt fiber reinforced polymer (BFRP) bars in seawater sea-sand concrete (SSC) environment, this paper investigates the evolution of BFRP bar tensile properties immersed in real SSC pore solution environment. Soaking solutions based on normal seawater cement slurry pore solution (NA) and low alkalinity seawater cement slurry pore solution (LA) were prepared by pore solution extrusion and ion concentration analysis, and the test results were also compared with those in ACI 440.3R specification recommended soaking solution (ACI) through accelerated aging. The BFRP bars prepared with epoxy resin (B/E bars) and vinyl ester resin (B/V bars) were utilized in the tests. The change of tensile mechanical property of BFRP bars was evaluated by tensile tests after accelerated aging at different temperatures and immersion durations, and the degradation mechanism was analyzed by using microstructural characterization. The test results showed that reducing the alkalinity of the pore solution was more effectively than reducing the chloride ion concentration for delaying the degradation of long-term mechanical property of BFRP bars, and the effect of increasing temperature on the mechanical property degradation of B/V bars was more significant than that of B/E bars. The tensile strength degradation of BFRP bars during aging process was higher than their elastic modulus. Meanwhile the difference in elastic modulus of B/E bars before and after accelerated aging in the three environments was not significant. The corrosion resistance of vinyl resin was better than that of epoxy resin, but its weaker interfacial properties with basalt fibers resulted in worse durability of B/V bars than that of B/E bars in the simulated SSC pore solution.

Key words： BFRP bars seawater sea-sand concrete pore solution tensile property microstructure

Published: Online: 2024-06-25

CLC number:

TB332

Fund:National Natural Science Foundation of China-Shandong Joint Fund (U1806225), the National Natural Science Foundation of China (52208246), and the Natural Science Foundation of Changsha (kq2202160).

	Service
	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	ZHU Deju
	CHU Kaidan
	GUO Shuaicheng
	SHI Caijun

Cite this article:

ZHU Deju,CHU Kaidan,GUO Shuaicheng, et al. Tensile Properties Deterioration of BFRP Bars in Real Seawater Sea-sand Concrete Pore Solution Immersion Environment[J]. Materials Reports, 2024, 38(11): 23030043-8.

URL:

http://www.mater-rep.com/EN/10.11896/cldb.23030043 OR http://www.mater-rep.com/EN/Y2024/V38/I11/23030043

1 Dong Z Q, Wu G, Xu Y Q. Construction and Building Materials, 2016, 115, 277.
2 Zhang L Z, Sun Y M, Xiong W. Materials and Structures, 2014, 48 (10), 3279.
3 Xu K, Lu C H, Xuan G Y, et al. Materials Reports, 2021, 35(4), 4053 (in Chinese).
徐可, 陆春华, 宣广宇, 等. 材料导报, 2021, 35(4), 4053.
4 Tomlinson D, Fam A. Journal of Composites for Construction, 2015, 19 (2), 04014036.
5 Uomoto T, Mutsuyoshi H, Katsuki F, et al. Journal of Materials in Civil Engineering, 2002, 14 (3), 191.
6 Benmokrane B, Elgabbas F, Ahmed E A, et al. Journal of Composites for Construction, 2015, 19 (6), 04015008.
7 Elgabbas F, Ahmed E A, Benmokrane B. Construction and Building Materials, 2015, 95, 623.
8 Ali A H, Mohamed H M, Benmokrane B, et al. Composites Part B: Engineering, 2019, 157, 248.
9 ASTM D7705/D7705M-12. Standard test method for alkali resistance of fiber reinforced polymer (FRP) matrix composite bars used in concrete construction, West Conshohocken, PA, USA, 2012.
10 ACI 440.3R. Guide test methods for fiber-reinforced polymers (FRPs) for reinforcing or strengthening concrete structures, American Concrete Institute, Farmington Hills, Michigan, 2012.
11 Serbescu A, Guadagnini M, Pilakoutas K. Journal of Composites for Construction, 2015, 19(2), 04014037.
12 Li Y L, Zhao X L, Singh Raman R K, et al. Construction and Building Materials, 2018, 159, 704.
13 Zhu N S, Jin F N, Kong X L, et al. Construction and Building Mate-rials, 2018, 188, 1085.
14 Xiao J Z, Qiang C B, Nanni A, et al. Construction and Building Mate-rials, 2017, 155, 1101.
15 Geng J Z, Zhu D J, Guo S C, et al. Materials Reports, 2022, 36(3), 21010189 (in Chinese).
耿健智, 朱德举, 郭帅成, 等. 材料导报, 2022, 36(3), 21010189.
16 Cau Dit Coumes C, Courtois S, Nectoux D, et al. Cement and Concrete Research, 2006, 36(12), 2152.
17 Li S, Yin J, Zhang G. Construction and Building Materials, 2020, 249, 118775.
18 Hang T L P, Verdier J, Vidal T, et al. European Journal of Environmental and Civil Engineering, 2017, 23(6), 657.
19 Wang Z K, Zhao X L, Xian G J, et al. Construction and Building Materials, 2017, 156, 985.
20 Wu G, Wang X, Wu Z S, et al. Science and Engineering of Composite Materials, 2015, 22(6), 649.
21 Wu G, Dong Z Q, Wang X, et al. Journal of Composites for Construction, 2015, 19(3), 04014058.
22 Guo F, Al-Saadi S, Singh R R K, et al. Corrosion Science, 2018, 141, 1.
23 Behnood A, Van Tittelboom K, De Belie N. Construction and Building Materials, 2016, 105, 176.
24 Yi Y, Guo S C, Li S, et al. Construction and Building Materials, 2021, 299, 123957.
25 Yi Y, Zhu D J, Guo S C, et al. Cement and Concrete Composites, 2022, 134, 104778.
26 Wu G, Zhu Y, Dong Z Q, et al. China Civil Engineering Journal, 2014, 47(8), 32 (in Chinese).
吴刚, 朱莹, 董志强, 等. 土木工程学报, 2014, 47(8), 32.
27 Li S, Guo S C, Yi Y, et al. Construction and Building Materials, 2021, 307, 124650.