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What is Durability Issues of Prestressed Concrete Sleepers about?

This document discusses some problems with the durability of prestressed concrete sleepers, specifically: 1. Concrete sleepers can deteriorate due to delayed ettringite formation (DEF), which occurs when the pore solution in concrete contains high levels of sulfate ions that react with aluminate ions over time, causing expansion and cracking. 2. High alkali content in cement used for sleepers can also lead to cracking, as alkalis in the pore solution exceeding 500 mmol/l cause ettringite to become unstab

Author

jabbar

Language

EN