[2] [2] AIKEN T A, KWASNY J, SHA W, et al. Mechanical and durability properties of alkali-activated fly ash concrete with increasing slag content[J]. Constr Build Mater, 2021, 301: 124330.

[3] [3] WANG A, ZHENG Y, ZHANG Z, et al. The durability of alkali-activated materials in comparison with ordinary Portland cements and concretes: A review[J]. Engineering, 2020, 6(6): 695-706.

[6] [6] THUNUGUNTLA C S, RAO T D G. Effect of mix design parameters on mechanical and durability properties of alkali activated slag concrete[J]. Constr Build Mater, 2018, 193: 173-188.

[7] [7] LEE N K, LEE H K. Influence of the slag content on the chloride and sulfuric acid resistances of alkali-activated fly ash/slag paste[J]. Cem Concr Compos, 2016, 72: 168-179.

[9] [9] MANGAT P S, OJEDOKUN O O, LAMBERT P. Chloride-initiated corrosion in alkali activated reinforced concrete[J]. Cem Concr Compos, 2020, 115: 103823.

[11] [11] MA Q, NANUKUTTAN S V, BASHEER P, et al. Chloride transport and the resulting corrosion of steel bars in alkali activated slag concretes[J]. Mater Struct, 2015, 49(9): 1-15.

[13] [13] MUNDRA S, PRENTICE D P, BERNAL S A, et al. Modelling chloride transport in alkali-activated slags[J]. Cem Concr Res, 2020, 130: 106011.

[16] [16] GUNASEKARA C, LAW D, BHUIYAN S, et al. Chloride induced corrosion in different fly ash based geopolymer concretes[J]. Constr Build Mater, 2019, 200: 502-513.

[18] [18] LI K. Modeling hydroionic transport in cement-based porous materials under drying-wetting actions[J]. J Appl Mechan, 2013, 80(2): 0904.

[19] [19] VAN GENUCHTEN M T. A closed-form equation for predicting the hydraulic conductivity of unsaturated soils[J]. Soil Sci Soc Am J, 1980, 44(5): 892-898.

[20] [20] BAROGHEL-BOUNY V, MAINGUY M, LASSABATERE T, et al. Characterization and identification of equilibrium and transfer moisture properties for ordinary and high-performance cementitious materials[J]. Cem Concr Res, 1999, 29(8): 1225-1238.

[22] [22] MOHAMMED T U, HAMADA H. Relationship between free chloride and total chloride contents in concrete[J]. Cem Concr Res, 2003, 33(9): 1487-1490.