Evaluation of the degradation of concrete composites using digital microscopy

The paper deals with an alternative possibility to evaluate the degradation of concrete composites by means of surface changes of surfaces exposed to the relevant degradation agents using digital microscopy. A uniform, rapid and efficient determination of the nature and level of degradation for the various methods dealing with the durability and service life of portland cement-based systems is crucial for eliminating the time-economic costs in the case of diagnostic, verification or type tests. The experimental section specifically addresses the issue for specimens subjected to the test of the resistance to water and de-icing agents and acid attacks.