{"title":"Corrosion Protection","description":"\u003cp\u003eCorrosion of steel reinforcement in reinforced concrete is usually not visible — until the rust reaches a critical amount and the concrete cracks from the inside. By then, the damage is more extensive than surface signs indicate. Corrosion protection of the reinforcement is a mandatory step before concrete repair — skipping it causes the entire repair to fail prematurely.\u003c\/p\u003e\n\u003ch3\u003eThe mechanism of reinforcement corrosion in concrete\u003c\/h3\u003e\n\u003cp\u003eIn healthy, alkaline concrete, a passive oxide layer forms on the surface of the reinforcement, protecting the steel from rusting. Both carbonation and chloride exposure reduce the alkalinity of the concrete — the passive layer breaks down, and the reinforcement enters active corrosion. The corrosion product (rust) occupies several times the volume of the original steel — this causes the concrete to crack from the inside.\u003c\/p\u003e\n\u003ch3\u003eWhat types of corrosion protection materials exist?\u003c\/h3\u003e\n\u003cp\u003eRust converter: Chemically transforms active rust into a passive, stable phosphate. A preparatory step — it does not replace the passivation layer but stabilizes corrosion remaining after mechanical rust removal.\u003c\/p\u003e\n\u003cp\u003ePassivation mortar (EN 1504-7): A cement-based repair mortar containing corrosion-inhibiting additives, applied directly to the exposed reinforcement. It restores the alkaline environment around the reinforcement and prevents further corrosion. According to EN 1504 standards, this is a mandatory step in any concrete repair where reinforcement is exposed.\u003c\/p\u003e\n\u003cp\u003eMigration corrosion inhibitors: Materials that diffuse from the surface into the concrete, forming a molecular corrosion protection layer on the reinforcement — even where the reinforcement is not exposed. They can be used as preventive treatment and in early carbonation cases.\u003c\/p\u003e\n\u003ch3\u003eThe order of corrosion protection in concrete repair\u003c\/h3\u003e\n\u003cp\u003eThe concrete repair layering: (1) removal of damaged concrete and exposure of reinforcement, (2) rust removal and rust conversion, (3) application of passivation mortar, (4) repair mortar, (5) surface protective coating if necessary. Skipping step (3) endangers the durability of the entire system.\u003c\/p\u003e\n\u003cp\u003eBrowse our corrosion protection products or request advice to assemble a protection system suited to the condition of your reinforced concrete structure.\u003c\/p\u003e","products":[{"product_id":"kerakoll-metric-rebar","title":"Kerakoll Metric Rebar","description":"\u003cp\u003eCement-based, rust-resistant protective agent for reinforcing bars.\u003c\/p\u003e\n\n\u003cp\u003e Kerakoll Metric Rebar is a one-component mortar that protects steel inserts and can be applied with a brush.\u003c\/p\u003e\n\n\u003cp\u003e \u003cb\u003eAreas of use:\u003c\/b\u003e\u003c\/p\u003e\n\n\u003cp\u003e Active and passive corrosion protection of steel inserts for structural repairs of reinforced concrete Metric product line or carried out with traditional cement-based mortars.\u003c\/p\u003e\n\n\u003ctable\u003e\n\n\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003e Wrapping\u003c\/th\u003e\n\n\u003ctd\u003e Bag 5 kg\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003e Material requirement\u003c\/th\u003e\n\n\u003ctd\u003e ≈ 100 g\/m (concrete steel Ø 10 layer thickness 1.5 mm)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003e Storage\u003c\/th\u003e\n\n\u003ctd\u003e ≈ 12 months\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e","brand":"Kerakoll","offers":[{"title":"5kg","offer_id":48035042918724,"sku":"","price":3450.0,"currency_code":"HUF","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0635\/8027\/4946\/files\/kerakoll-metric-rebar-rozsdaallo-vedo-szer-betonacelokhoz_resized.jpg?v=1709498000"}],"url":"https:\/\/www.masterworks.hu\/en\/collections\/szerkezeti-javitas-korroziovedo.oembed","provider":"Masterworks Hungary","version":"1.0","type":"link"}