Ballast fouling is created by the breakdown of aggregates or outside contamination by coal
dust from coal trains, or from soil intrusion beneath rail track. Due to ballast fouling, the
conditions of rail track can be deteriorated considerably depending on the type of fouling
material and the degree of fouling. So far there is no comprehensive guideline available to
identify the critical degree of fouling for different types of fouling materials. This paper
presents the identification of degree of fouling and types of fouling using non-destructive …