Herein,　the　effects　of　the　ionic　types　and　content　of　alkali　activator　on　the　chloride-ion　permeability　of　one-part　alkali-activated　nickel　slag　concrete　were　examined.　The　NT　Build　492　method　was　adopted　to　measure　the　Cl−　transport　performance.　In　general,　the　total　Cl−　concentration　in　concrete　decreases　with　the　increase　of　penetration　depth;　however,　the　enrichment　of　Cl−　concentration　in　the　sample　is　not　obvious.　Anions　have　more　effect　on　28-d　compressive　strength,　while　cations　have　more　effect　on　chlorine-ion　permeability.　For　the　same　Na2O　content,　SiO32−-activator　and　Na+-activator　perform　better　than　other　anions　and　cations,　while　OH–　and　K+　perform　worse　than　other　ions.　The　chloride-ion　permeability　coefficient　(DRCM)　of　concrete　with　Na2SiO3　is　the　lowest　and　that　with　KOH　is　the　highest.　The　DRCM　of　concrete　prepared　with　KOH　is　1.93　times　higher　than　that　of　concrete　prepared　with　Na2SiO3.　When　the　activator　is　Na2SiO3,　the　DRCM　of　concrete　decreases　with　the　increase　in　Na2O　content　when　the　Na2O　content　is　less　than　7%.　However,　when　the　Na2O　content　exceeds　7%,　the　DRCM　of　concrete　increases　with　the　increase　in　Na2O　content.　©　2024　The　Authors