Sui, ShiyuWilson, WilliamGeorget, FabienMaraghechi, HamedKazemi-Kamyab, HadiSun, WeiScrivener, Karen2020-01-022020-01-022020-01-022019-11-0110.1016/j.cemconres.2019.105864https://infoscience.epfl.ch/handle/20.500.14299/164291WOS:000503086100001This paper presents a comparison of methods to quantify the chloride binding capacity for cementitious materials composed of Ordinary Portland Cement (OPC) and Limestone (LS, 0 to 55% replacement). Physical and chemical chloride bindings were investigated to better understand the binding capacity of the different systems and to provide basic information for modelling. Cement pastes samples were exposed to a 0.5 M NaCl solution and their chloride contents were quantified as free ions in pore solution, chemically bound ions in AFm phases, and physically bound ions on Calcium-Aluminum-Silicate-Hydrates (C-A-S--H). Notably, the study showed that (1) considering a solid solution between Friedel's salt and Hemicarboaluminate (He) was necessary for the quantification of chemically bound chlorides in limestone blended system and (2) an accurate estimation of the C-A-S-H content was critical for quantifying physically bound chlorides.Construction & Building TechnologyMaterials Science, MultidisciplinaryMaterials Sciencedurabilitylimestonechloride bindingfriedel's salt solid solutionphase assemblagehydrationconcretediffusionfinenesspastesionstext::journal::journal article::research article