Resin concrete sleeper

Abstract

The invention relates to the field of sleepers, and particularly discloses a resin concrete sleeper. The resin concrete sleeper comprises a sleeper body, reinforcing steel bars are arranged in the sleeper body, the sleeper body is formed by solidifying a resin concrete material, and the resin concrete material is formed by mixing the following raw materials in parts by weight: 15-25 parts of epoxy resin, 10-25 parts of powder, 35-50 parts of aggregate, 3-6 parts of a reactive diluent, 3-5 parts of a flexibilizer, 5-8 parts of other additives and 5-8 parts of fibers. According to the resin concrete sleeper, the epoxy resin is used in the concrete to replace cement to serve as the cementing material, the epoxy resin reacts with the curing agent to achieve gelatinization, solidification shrinkage is small, shrinkage cracks are few, the mechanical property is good, and compared with common concrete, the resin concrete sleeper has the advantages of being high in strength and low in density, can achieve lighter weight and is convenient to construct; meanwhile, the elasticity of the epoxy resin sleeper is good, rail vibration can be effectively buffered and conducted, pulverization of ballast is reduced, and sinking of the sleeper is reduced.

Description

technical field [0001] This application relates to the field of sleepers, and more particularly, it relates to a resin concrete sleeper. Background technique [0002] Sleepers were originally made of wood, which has good elasticity and insulation, and is less affected by temperature changes in the surrounding medium.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 track bed. It must have a certain flexibility and elasticity. [0003] Due to the shortage of timber resources in the world, reinforced concrete sleepers are gradually used, and then 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. Its disadvantages are high rigidity, poor elasticity, and heavy weight, which increase the pressure and vibration acc...

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