Abstract: Utilizing different activators to prepare alkali activated slag cement (AAS) mortar specimens, and setting up chloride ion (Cl-) erosion environments with different water flow velocities (v) and action directions, the influence mechanism fo the Cl- erosion resistance of AAS mortar under flowing water conditions was explored. Additionally, an influence coefficient K(v) was introduced to account for the effect of v on the Cl- diffusion coefficient, and the Cl- diffusion coefficient of AAS mortar under flowing water was adjusted. The results indicate that normal flowing water causes more significant damage to microscopic morphology and pore structure of AAS mortar compared to tangential flowing water. Additionally, both the Cl- erosion depth and the Cl- diffusion coefficient (D) of AAS mortar increase with higher normal flow velocities, in contrast, as the tangential flow velocity increases, the D of AAS mortar rises first and then decreases. Furthermore, AAS demonstrated better resistance to Cl- erosion than ordinary Portland cement, and the excitation effect of water glass was stronger than that of NaOH. Finally, time-varying predictive models for Cl- concentration distribution in AAS mortar, accounting for both normal and tangential water flow velocities, were developed separately.
王远达, 张鸿儒, 李从正, 樊静宜, 林旭健. 水流作用下碱激发矿渣砂浆的氯离子传输规律[J]. 材料导报, 2025, 39(21): 24100161-7.
WANG Yuanda, ZHANG Hongru, LI Congzheng, FAN Jingyi, LIN Xujian. Transport of Chloride Ions in Alkali-Activated Slag Mortars Under Flowing Water. Materials Reports, 2025, 39(21): 24100161-7.
1 Gökçe H S. Journal of the Australian Ceramic Society, 2024, 60 (3), 885. 2 Geng K, Jin J, Chai J, et al. Case Studies in Construction Materials, 2024, 21, e03583. 3 Ravikumar D, Neithalath N. Cement and Concrete Research, 2013, 47, 31. 4 Yeau K Y, Kim E K. Cement and Concrete Research, 2005, 35 (7), 1391. 5 Zhu Y, Wan X, Han X, et al. Construction and Building Materials, 2022, 320, 126219. 6 Li H, Xiao H, Guan X, et al. Composites Part B-engineering, 2014, 56, 698. 7 Yu L, Zhou C, Liu Z, et al. Construction and Building Materials, 2019, 208, 296. 8 Xia J, Chen J, Liu K, et al. Wear, 2024, 548, 205382. 9 Fu Q, Zhang Z, Niu D. Cement and Concrete Composites, 2023, 141, 105146. 10 Yang W, Yin B, Yang D, et al. Marine Sciences, 2013, 37(9), 10(in Chinese). 杨万康, 尹宝树, 杨德周, 等. 海洋科学, 2013, 37(9), 10. 11 Tian Y, Yan X, Zhang M, et al. Construction and Building Materials, 2020, 260, 120480. 12 Fu Q, Bu M, Zhang Z, et al. Cement and Concrete Composites, 2021, 123, 104166. 13 Liping H, Qianmin M, Rongxin G, et al. Non-Metallic Mines, 2019, 42 (4), 34. 14 Sun J, Hou S, Guo Y, et al. Developments in the Built Environment, 2024, 18, 100410. 15 Arandigoyen M, Alvarez J I. Cement and Concrete Research, 2007, 37 (5), 767. 16 Song H, Lee C, Ann K Y. Cement and Concrete Composites, 2008, 30 (2), 113. 17 Thomas M D A, Bamforth P B. Cement and Concrete Research, 1999, 29 (4), 487. 18 Violetta B. Concrete International, 2002, 24, 53.
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2025, Vol. 39 
