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A resin concrete sleeper
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A technology of resin concrete and sleepers, which is applied in the field of sleepers, can solve the problems of heavy weight of concrete sleepers, aggravation of ballast pulverization, increase of track sinking, etc., and achieve the effect of light weight, increased strength and reduced floating
Active Publication Date: 2022-06-21
威海瑞合铁路轨枕有限公司
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Summary
Abstract
Description
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Application Information
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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
Method used
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Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0036] Embodiment 1: a resin concrete sleeper, the preparation method of this concrete sleeper comprises the following steps:
[0037] (1) According to the weight and proportion of each component in Table 1, Table 2, Table 3 and Table 4, pre-stir 12.32 kg of bisphenol A epoxy resin and 2.68 kg of glycidyl ester epoxy resin 3min;
[0038] (2) Then add 25.25kg of high-strength ceramsite, 15.75kg of crushed stone, 14kg of fine aggregate, and 10kg of fly ash into the mixer at the same time, the fine aggregate is sand, and stirred for 3 minutes;
[0039] (3) Add 3kg of 1,4-butanediol diglycidyl ether, 3kg of active toughening agent, 2.86kg of curing agent and 2.14kg of defoamer while stirring, and stir for 3 minutes;
[0040] (4) Finally, add 5kg of carbon fiber while stirring for 4 minutes to obtain resin concrete;
[0041] (5) The resin concrete is poured into the test block mold, and vibrated for 1 minute by the vibrating table, and the mold is removed after curing for one day; ...
Embodiment 2
[0047] Example 2: A resin concrete sleeper, the difference from Example 1 is that the content and proportion of each component are shown in Table 1, Table 2, Table 3 and Table 4.
Embodiment 3
[0048] Example 3: A resin concrete sleeper, the difference from Example 1 is that the content and proportion of each component are shown in Table 1, Table 2, Table 3 and Table 4.
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PUM
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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...
Claims
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Application Information
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