6 ms·
> Concrete needs to be maintained just like anything else But how can this be done when the steel is enclosed within the concrete? What can be done once it sta
by pantalaimon 10y ago
> Concrete needs to be maintained just like anything else
But how can this be done when the steel is enclosed within the concrete? What can be done once it started to rust?
- wiredfool 10y agoThere are several things that you can do. 0) Build using appropriate materials/design/construction. It's mostly a solved problem, it just takes wanting to spend enough money to do the process right. 1) Use epoxy coated rebar. It's commonly used in places where there's a large risk of cracking and rebar corrosion (e.g. roadways) 2) Use prestressing/posttensioning to put an overall compressive force on the concrete to prevent cracking.
- HillaryBriss 10y agoThe American Galvanizers association makes the case for hot-dipped, galvanized rebar, for what it's worth: https://www.galvanizeit.org/uploads/publications/Galvanized_Rebar_vs_Epoxy_Rebar.pdf https://www.galvanizeit.org/uploads/publications/Galvanized_...
- theoh 10y agoSmall amounts of damage due to rust can be patched up with new concrete. Whether this involves welding in new elements of steel is a question I don't know the answer to. http://www.cement.org/for-concrete-books-learning/concrete-technology/durability/corrosion-of-embedded-materials http://www.cement.org/for-concrete-books-learning/concrete-t...
- theoh 10y agohttp://theconstructor.org/practical-guide/reinforcement-repair-techniques/5835/ http://theconstructor.org/practical-guide/reinforcement-repa...