Non-uniform　corrosion　of　reinforcement　causes　concrete　cracking　in　chloride　contaminated　RC　structures.　Due　to　the　special　boundary　conditions,　the　concrete　cover　with　corner　located　rebar　is　often　subjected　to　the　attack　of　chloride　ions　in　a　marine　environment　from　two　directions,　and　thus　the　corresponding　non-uniform　corrosion　distribution　should　be　different　from　the　one　for　side-located　rebar.　The　aim　of　the　work　is　to　explore　the　effect　of　corner　located　rebar　corrosion　on　the　cracking　of　cover　concrete.　For　corner　located　rebar,　an　improved　non-uniform　corrosion　distribution　model　was　established　based　on　the　analysis　results　of　two-dimensional　chloride　diffusion　in　concrete.　Considering　the　heterogeneities　of　concrete,　a　meso-scale　mechanical　model　and　method　for　the　study　on　the　failure　behavior　of　concrete　cover　was　built.　In　the　analysis　model　and　method,　the　non-uniform　radial　displacement　distribution　was　adopted　to　simulate　the　corrosion　expansion　behavior　of　the　rebar.　The　cracking　of　concrete　cover　with　corner　located　rebar　was　simulated　and　studied.　The　present　approach　was　verified　by　the　available　experimental　observations.　The　influences　of　concrete　heterogeneity,　corrosion　distribution　types,　rebar　diameter　and　concrete　cover　thickness　on　the　failure　patterns　of　concrete　cover　and　the　expansive　pressure　were　investigated.　The　simulation　results　indicate　that　the　developed　approach　can　well　describe　the　cracking　behavior　of　cover　concrete　and　the　corrosion-expansion　behavior　of　steel　rebar.　(C)　2015　Elsevier　Ltd.　All　rights　reserved.