Influence of Undisturbed Sea Sand on Mechanical Properties of Concrete

Abstract

Abstract: In order to explore the mechanical properties of undisturbed sea sand concrete with high chlorine concentration and high shell content, taking the chloride ion content and shell content of sea sand as variables, nine groups of sea sand concrete were designed and prepared to carry out concrete cube compressive strength test and uniaxial compressive stress-strain curve test, and compared with ordinary concrete. The results show that with the increase of chloride ion content, the pore structure of concrete becomes finer, the early strength increases, the peak stress of uniaxial compressive stress-strain complete curve increases, the peak strain decreases, and the elastic modulus increases. With the increase of shell content, the slump of concrete decreases significantly, the pore structure of concrete becomes looser, the strength decreases, and the peak stress of uniaxial compressive stress-strain complete curve decreases, the peak strain increases, and the elastic modulus decreases. Finally, based on the existing models, the formula for calculating the model parameters of chloride ion content and shell content is put forward.

Key words: sea sand concrete, undisturbed sea sand, uniaxial compression, stress-strain complete curve, chlorine ion content, shell content

CLC Number:

TU528

ZHENG Jianlan, WANG Yasi, YE Yan. Influence of Undisturbed Sea Sand on Mechanical Properties of Concrete[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(6): 2149-2156.

References

[1] 中国砂石协会. 2022年中国砂石行业运行报告[EB/OL]. (2023-04-04) [2023-05-10]. https://zgss.org.cn/zixun/zhuti/15356.html.
China Aggregates Association. Operation report of China aggregates industry in 2022[EB/OL]. (2023-04-04) [2023-05-10].https://zgss.org.cn/zixun/zhuti/15356.html (in Chinese).
[2] 刘伟, 谢友均, 董必钦, 等. 海砂特性及海砂混凝土力学性能的研究[J]. 硅酸盐通报, 2014, 33(1): 15-22.
LIU W, XIE Y J, DONG B Q, et al. Study on characteristics of dredged marine sand and the mechanical properties of concrete made with dredged marine sand[J]. Bulletin of the Chinese Ceramic Society, 2014, 33(1): 15-22 (in Chinese).
[3] ZHAO Y F, HU X, SHI C J, et al. A review on seawater sea-sand concrete: mixture proportion, hydration, microstructure and properties[J]. Construction and Building Materials, 2021, 295: 123602.
[4] MAO Y Z, WEI Y H, ZHAO H T, et al. Corrosion behavior of epoxy-coated rebar with pinhole defect in seawater concrete[J]. Acta Metallurgica Sinica (English Letters), 2018, 31(11): 1171-1182.
[5] FANG K, MAO J H, WANG P S, et al. Durability control of sea-sand concrete components utilizing strong electric field during early curing period[J]. Construction and Building Materials, 2022, 344: 128221.
[6] SIKORA P, CENDROWSKI K, ABD ELRAHMAN M, et al. The effects of seawater on the hydration, microstructure and strength development of Portland cement pastes incorporating colloidal silica[J]. Applied Nanoscience, 2020, 10(8): 2627-2638.
[7] ETXEBERRIA M, FERNANDEZ J M, LIMEIRA J. Secondary aggregates and seawater employment for sustainable concrete dyke blocks production: case study[J]. Construction and Building Materials, 2016, 113: 586-595.
[8] LI Q, GENG H N, SHUI Z H, et al. Effect of metakaolin addition and seawater mixing on the properties and hydration of concrete[J]. Applied Clay Science, 2015, 115: 51-60.
[9] CHENG S K, SHUI Z H, SUN T, et al. Effects of seawater and supplementary cementitious materials on the durability and microstructure of lightweight aggregate concrete[J]. Construction and Building Materials, 2018, 190: 1081-1090.
[10] WANG J J, LIU E G, LI L. Multiscale investigations on hydration mechanisms in seawater OPC paste[J]. Construction and Building Materials, 2018, 191: 891-903.
[11] LIU W, CUI H Z, DONG Z J, et al. Carbonation of concrete made with dredged marine sand and its effect on chloride binding[J]. Construction and Building Materials, 2016, 120: 1-9.
[12] XIAO J Z, QIANG C B, NANNI A, et al. Use of sea-sand and seawater in concrete construction: current status and future opportunities[J]. Construction and Building Materials, 2017, 155: 1101-1111.
[13] HASDEMIR S, TUĞRUL A, YILMAZ M. The effect of natural sand composition on concrete strength[J]. Construction and Building Materials, 2016, 112: 940-948.
[14] LIMEIRA J, ETXEBERRIA M, AGULLÓ L, et al. Mechanical and durability properties of concrete made with dredged marine sand[J]. Construction and Building Materials, 2011, 25(11): 4165-4174.
[15] GUO M H, HU B, XING F, et al. Characterization of the mechanical properties of eco-friendly concrete made with untreated sea sand and seawater based on statistical analysis[J]. Construction and Building Materials, 2020, 234: 117339.
[16] 陈宗平, 张亚旗, 姚如胜, 等. 海砂混凝土单轴受压应力-应变全曲线试验研究[J]. 硅酸盐通报, 2019, 38(12): 3934-3940+3945.
CHEN Z P, ZHANG Y Q, YAO R S, et al. Experimental study on complete stress-strain curve of sea sand concrete behavior under uniaxial loading[J]. Bulletin of the Chinese Ceramic Society, 2019, 38(12): 3934-3940+3945 (in Chinese).
[17] 林秋君. 海水海砂混凝土基本力学性能及细观结构研究[D]. 福州: 福州大学, 2020.
LIN Q J. Study on the basic mechanical properties and microstructure of seawater sea-sand concrete[D]. Fuzhou: Fuzhou University, 2020 (in Chinese).
[18] 吴中伟, 廉慧珍. 高性能混凝土[M]. 北京: 中国铁道出版社, 1999: 22.
WU Z W, LIAN H Z. High performance concrete[M]. Beijing: China Railway Press, 1999: 22 (in Chinese).
[19] JIN H S, LI Z L, ZHANG W Z, et al. Iodide and chloride ions diffusivity, pore characterization and microstructures of concrete incorporating ground granulated blast furnace slag[J]. Journal of Materials Research and Technology, 2022, 16: 302-321.
[20] 叶艳. 海砂混凝土单轴受压应力-应变全曲线试验研究[D]. 福州: 福州大学, 2020.
YE Y. Experimental study on stress-strain curve of sea sand concrete under uniaxial compression[D]. Fuzhou: Fuzhou University, 2020 (in Chinese).
[21] 王小刚, 史才军, 何富强, 等. 氯离子结合及其对水泥基材料微观结构的影响[J]. 硅酸盐学报, 2013, 41(2): 187-198.
WANG X G, SHI C J, HE F Q, et al. Chloride binding and its effects on microstructure of cement-based materials[J]. Journal of the Chinese Ceramic Society, 2013, 41(2): 187-198 (in Chinese).
[22] 过镇海, 张秀琴, 张达成, 等. 混凝土应力-应变全曲线的试验研究[J]. 建筑结构学报, 1982, 3(1): 1-12.
GUO Z H, ZHANG X Q, ZHANG D C, et al. Experimental investigation of the complete stress-strain curve of concrete[J]. Journal of Building Structures, 1982, 3(1): 1-12 (in Chinese).
[23] British Standards Institution. Eurocode 2, design of concrete structures. part 1-1: general rules and rules for buildings[M]. London: British Standards Institution, 2004.
[24] 中华人民共和国住房和城乡建设部. 混凝土结构设计规范: GB 50010—2010[S]. 北京: 中国建筑工业出版社, 2011.
Ministry of Housing and Urban-Rural Development, People’s Republic of China. Concrete structure design code: GB 50010—2010[S]. Beijing: China Building and Construction Press, 2011 (in Chinese).