{"id":13958,"date":"2026-06-25T16:43:16","date_gmt":"2026-06-25T16:43:16","guid":{"rendered":"https:\/\/www.gbu.kyiv.ua\/?p=13958"},"modified":"2026-06-25T16:43:16","modified_gmt":"2026-06-25T16:43:16","slug":"koroziya-armatury-v-perekrytti-yak-cze-vplyvaye-na-micznist","status":"publish","type":"post","link":"https:\/\/www.gbu.kyiv.ua\/en\/koroziya-armatury-v-perekrytti-yak-cze-vplyvaye-na-micznist\/","title":{"rendered":"Reinforcement Corrosion in Floor Slabs: How It Affects Strength"},"content":{"rendered":"

Reinforcement Corrosion in Floor Slabs: How It Affects Strength<\/span><\/h2>\r\n

A concrete floor slab seems monolithic and immovable. But inside it, a reinforcement framework is at work \u2014 it is what provides tensile strength, which concrete itself lacks. When this reinforcement begins to rust, the strength of the structure rapidly declines. And the most dangerous thing is that corrosion often goes unnoticed until it is too late. How to recognize the problem and what to do \u2014 let\u2019s look further.<\/span><\/p>\r\n

Get a consultation<\/a><\/div>\r\n

Why Reinforcement Corrosion is a Threat to the Entire Building<\/span><\/h2>\r\n

Reinforcement corrosion in a floor slab is an electrochemical process of steel destruction caused by moisture, oxygen, and aggressive substances penetrating through the concrete pores. As a result, rust forms on the surface of the reinforcing bars, occupying a significantly larger volume than the metal. This pressure ruptures the concrete from within \u2014 cracks form, the protective layer delaminates, and the reinforcement loses its bond with the concrete. A structure is considered strong if its actual strength exceeds design loads with a certain safety margin. Corrosion, however, reduces strength, and the destruction of steel reinforcement resulting from chemical or electrochemical interaction with the corrosive environment causes a reduction in the working cross-section of the bars.<\/span> The influence of chemical substances, high humidity, frost, or salts can cause reinforcement corrosion, leading to a decrease in structural strength and reduced durability. As a result, the slab can lose up to 30\u201350% of its load-bearing capacity before visible signs of destruction even appear.<\/span><\/p>\r\n

How to Detect Reinforcement Corrosion: Warning Signs<\/span><\/h2>\r\n

The first signs of corrosion can be noticed during visual inspection, but only an instrumental inspection provides a precise diagnosis. Here is what to look for:<\/span><\/p>\r\n