A resin concrete sleeper

Abstract

The application relates to the field of sleepers, and specifically discloses a resin concrete sleeper. The resin concrete sleeper includes the sleeper body, the sleeper body is provided with steel bars, and the sleeper body is formed by solidification of the resin concrete material, and the resin concrete material is mixed by raw materials containing the following parts by weight: 15-25 parts of epoxy resin, 10-25 parts of powder Material, 35-50 parts of aggregate, 3-6 parts of reactive diluent, 3-5 parts of toughening agent, 5-8 parts of other additives, 5-8 parts of fiber. The resin concrete sleeper of this application uses epoxy resin instead of cement as the cementitious material in the concrete, the epoxy resin reacts with the curing agent to realize gelation, the solidification shrinkage is small, the drying shrinkage cracks are few, and the mechanical properties are good. Compared with ordinary High-strength concrete has the advantages of high strength and low density, which can achieve lighter weight and facilitate construction. At the same time, epoxy resin sleepers have better elasticity, which can effectively buffer and conduct rail vibration, reduce ballast pulverization, and reduce sleeper fatigue. sink.

Description

technical field [0001] The present application relates to the field of sleepers, and more particularly, to a resin concrete sleeper. Background technique [0002] The sleeper was originally made of wood, which has good elasticity and insulation, and is less affected by the temperature change of the surrounding medium. The sleeper not only supports the rail, but also maintains the position of the rail, and also transmits the huge pressure transmitted by the rail to the ballast bed. It must have a certain flexibility and elasticity. [0003] Due to the shortage of timber resources in various countries in the world, reinforced concrete sleepers are gradually used, and later improved to prestressed concrete sleepers. Prestressed concrete sleepers have the advantages of long service life, good track stability, and can meet the requirements of high speed and large transportation volume. The disadvantages are high stiffness, poor elasticity and high weight, which increase the pr...

AI Technical Summary

Problems solved by technology

[0005] In view of the related technologies mentioned above, the inventor found that people use concrete sleepers instead of wooden sleepers to save forest resources, but the concrete sleepers are heavy, inconvenient to transport, and poor in elasticity, which is easy to aggravate the pulverization of ballast, causing the sinking of the track to increase and other defects