Tendon corrosion, slab leaks, cracking and anchorage failures: mechanisms, diagnosis and preservation.
Chlorides corrode post tension slab tendons out of sight. How they reach the steel, how to assess the risk on an existing slab, which repairs exist, and how to design against it.
Drilling into a post tension slab without locating the tendons is never safe. The force in one strand, what ACI 318-19 expects, five mistakes that cut cables, and what to do first.
Is a post tension slab more earthquake-resistant than an RC slab? How each behaves as a diaphragm and at the column, what ACI 318-19 changed, and how seismic category decides.
How to recognize a post-tension cable failure in a post tension slab: blowouts, directional cracks, sagging floors, rust and grease stains, and which signs mean stop and call an engineer now.
Complete guide
Corrosion attacks post tension slab tendons out of sight. How it starts, a five-step inspection sequence, what drives repair cost, and the preservation steps that keep tendons dry.
Beyond the articles
Need this applied to your project?
Design support, calculation notes and third-party reviews for post-tension slabs.
See the services