Mechanisms and modelling of concrete damage due to freezing

Dan je pregled mehanizama oštećenja betona od smrzavanja bez dodatka soli za odmrzavanje, prikazani su neki modeli pomoću kojih se može predvidjeti nastajanje oštećenja. Na osnovi mehanizama pojave oštećenja i mjerenja, izrađeni su modeli čija je svrha predviđanje trajnosti betonskih konstrukcija izloženih utjecaju smrzavanja. Pokazuje se da je zbog mikrostrukture betona koja se mijenja i brojnih parametara koji utječu na razvoj degradacije betona teško napraviti uspješan model.An overview of mechanisms of concrete damage due to freezing, but without presence of deicing salt, is presented. Some models enabling prediction of concrete damage are described. The models aimed at predicting durability of concrete structures exposed to freezing action have been developed based on modelling and measurement of damage mechanisms. However, the authors stress that is quite difficult to develop a successful model due to concrete microstructure which is subject to changes, and also because of a multitude of parameters that are responsible for the degradation of concrete