چكيده به لاتين
Considering the progress in the use of preaggregate concrete in concrete workshops and due to the need to convert ballasted rail tracks to the slab tracks for increase the life of the tracks as well as to reduce the maintenance of rail tracks, also, due to the fact that the method of converting the ballast tracks to the slab in situ is not clear, therefore, research should be done to use this type of concrete in the rail industry and to convert the ballasted tracks to the slab. First, the criteria for a concrete sample without reinforcement for use in the slab should be identified by the finite element software which meets the needs of a slab to the train. Thereafter, a concrete sample in a laboratory with a equal to or higher than strength that obtained from the software should be made. Using concrete made in the laboratory to create a preaggregate concrete beam that simulates the line conditions and carrying out various tests on this beam and obtaining reliable answers, we can trust the rail industry for the use of this type of concrete.
Keywords: Railway, Maintenance, Preaggregate concrete, Rail industry
