The paper describes the main objectives and conclusions of concrete sleepers affected from salty soil and sulphates also to provide technical examination of the problem, as well estimation and technical proposals of concrete sleepers which are affected by sulphates along the existing railway line 18-41 km, which is under the maintenance of Almobty Company for Contracting. However, in order to proceed with any final technical evaluation and what more a decision to be taken, chemical analysis of the subsoil is mandatory. For this purpose, rail line should be disconnected and the ballast removed. Afterwards geotechnical analysis should follow with bore sample of 2 to 5 meters deep, as well as surface sample, as per test specifications. The same procedure should be followed every 100 meters in the effected line. Our estimation is that additional samples of the same nature should be obtained from the wider area, not only the linear zone. The chemical analysis will provide specific factors to the problem such as the formation of the contaminant as well as the means of soil circulation is it in the form of underground water, fumes or others. Also Geomembranes and geo synthetic should be used to prevent the migration of fluids from one location to another; for example, lining landfills to stop leachate polluting groundwater, controlling groundwater entering tunnels or creating attenuation ponds within development. The problem analysis should follow two basic directions in the quest for solution: a) remedy of ground characteristics, b) remedy of existing rail superstructure (concrete sleepers and fastening system).

railway infrastructure; higher speed; safety; environment.