LIU Xinyu1, LIU Hui2, WANG Xinjie2,*, ZHU Pinghua2, CHEN Chunhong2, ZHOU Xinlei2
1 School of Environmental Science and Engineering, Changzhou University, Changzhou 213164, Jiangsu, China 2 School of Urban Construction, Changzhou University, Changzhou 213164, Jiangsu, China
Abstract: Taking geopolymer recycled concrete as matrix, the concrete was immersed in sulfuric acid solution with pH=1.0 for 48 d, and its apparent damage, compressive strength, mass loss and neutralization depth were used as sulfuric acid resistance performance indexes. The effects of different dosages of graphene oxide (0.01%, 0.03%, 0.05%) on the corrosion resistance of concrete were studied. In addition, the modification effect of graphene oxide was analyzed by SEM, XRD and FTIR. Studies have shown that the incorporation of a small amount of graphene oxide can significantly improve the sulfuric acid resistance of concrete, but the modification effect gradually weakens with the increase of the content. The compressive strength of the modified concrete increased by 56.0%, 17.0% and 6.0%, respectively, and it was still better than that of the unmodified concrete after 48 d of sulfuric acid corrosion. After 48 d, the concrete with 0.05wt% content showed the maximum mass loss and neutralization depth, and the poor interfacial transition zone and more loose corrosion products in the SEM figure, which represented the worst modification effect. Based on the macro performance, XRD and FTIR analysis, it was determined that the geopolymer recycled concrete with 0.01% graphene oxide had the best sulfuric acid corrosion resistance.
1 Wu M, Wang T, Wu K, Kan L. Construction and Building Materials, 2020, 239, 117813. 2 Liu H, Peng C, Dai M, et al. Surface Review and Letters, 2015, 22(6), 1550073. 3 Xie Y, Lin X, Ji T, et al. Construction and Building Materials, 2019, 228, 117071. 4 Singh N B, Middendorf B. Construction and Building Materials, 2020, 237, 117455. 5 Amran Y H M, Alyousef R, Alabduljabbar H, et al. Journal of Cleaner Production, 2020, 251, 119679. 6 Tam V W Y, Soomro M, Evangelista A C J. Construction and Building Materials, 2018, 172, 272. 7 Xiao J Z, Li A, Ding T. Journal of Southeast University (Natural Science Edition), 2016, 46(5), 1088(in Chinese). 肖建庄, 黎骜, 丁陶. 东南大学学报(自然科学版). 2016, 46(5), 1088. 8 Khan H A, Castel A, Khan M S H. Corrosion Science, 2020, 168, 108586. 9 Nuaklong P, Wongsa A, Sata V, et al. Heliyon, 2019, 5(9), e02513. 10 Devi S C, Khan R A. Construction and Building Materials, 2020, 250, 118883. 11 Guo K, Ma H H, Yang F S, et al. Journal of Building Materials, 2020, 23(1), 230(in Chinese). 郭凯, 马浩辉, 杨丰硕, 等. 建筑材料学报, 2020, 23(1), 230. 12 Liu X H, Wu Y Y, Li M S, et al. Construction and Building Materials, 2020, 247, 118544. 13 Bassuoni M T, Nehdi M L. Cement and Concrete Research, 2007, 37, 1070. 14 Wang T F, He Y C. China Concrete, 2019(7), 58(in Chinese). 王腾飞, 何怡畅. 混凝土世界, 2019(7), 58. 15 Chiranjiakumari Devi S, Ahmad Khan R. Construction and Building Materials, 2020, 250, 118883. 16 Xu G, Zhong J, Shi X. Fuel, 2018, 226, 644. 17 Mehta A, Siddique R. Construction and Building Materials, 2017, 146, 136. 18 Bakharev T. Cement and Concrete Research, 2005, 35, 658. 19 Lloyd R R, Provis J L, van Deventer J S J. Materials and Structures, 2012, 45, 1. 20 Saafi M, Tang L, Fung J, et al. Cement and Concrete Research, 2015, 67, 292. 21 Lei B, Zou J, Rao C H, et al. Journal of Building Structures, 2016, 37(S2), 103 (in Chinese). 雷斌, 邹俊, 饶春华, 等. 建筑结构学报, 2016, 37(S2), 103. 22 Liang W, Zhang G. Materials Letters, 2020, 276, 128223. 23 Somna K, Jaturapitakkul C, Kajitvichyanukul P, et al. Fuel, 2011, 90, 2118. 24 Fernando P T, Said J. Materials and Structures, 2011, 44, 487. 25 Long T, Shi X S, Wang Q Y, et al. Advanced Engineering Sciences, 2013, 45(6), 43 (in Chinese). 龙涛, 石宵爽, 王清远, 等. 四川大学学报(工程科学版), 2013, 45(6), 43. 26 Chen K, Wu D, Xia L, Cai Q, et al. Construction and Building Mate-rials, 2021, 279, 122496. 27 Bernal S A, Provis J L. Journal of the American Ceramic Society, 2014, 97, 997. 28 Provis J L, Palomo A, Shi C J. Cement and Concrete Research, 2015, 78, 110. 29 Sata V, Sathonsaowaphak A, Chindaprasirt P. Cement and Concrete Composites. 2012, 34, 700-8. 30 Liu X, Wu Y, Li M, et al. Construction and Building Materials, 2020, 247, 118544. 31 Guo X L, Shi H S, Dick W A. Cement Concrete Composite, 2010, 32, 142. 32 Li H, Liu X, Qi S Q, et al. Angewandte Chemie-International Edition, 2017, 56, 14090. 33 Allahverdi A, Skvara F. Ceramics-Silikaty. 2005, 49, 225.
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2023, Vol. 37 
