This　paper　presents　some　evidence　of　the　impact　of　the　Brazil　nut　effect　(BNE)　on　concrete＇s　particulate　structure　on　meso-level　(aggregate)　as　well　as　on　micro-level　(cement　paste).　BNE　is　associated　with　long-range　size　segregation　in　particle　mixtures　due　to　vibration　in　slurry　state　of　concrete,　both　near　boundaries　and　in　bulk.　Presented　evidences　on　meso-　as　well　as　on　micro-level　are　coming　from　experiences　in　practice　and　in　research,　as　well　as　from　discrete　element　modelling　(DEM)　investigations.