The tire rubber powder processed from waste rubber tires can be directly applied to tires and other rubber products, modified asphalt pavements, rubber concrete, building sound insulation materials and other fields. Compared with ordinary concrete, rubber concrete with tire rubber powder has better crack resistance. When using rubber powder to improve the crack resistance of concrete, the different effects of the addition of tire rubber powder on the mechanical properties, crack resistance, and frost resistance of concrete should be considered comprehensively, and the dispersion effect of tire rubber powder in concrete should be considered.
1. Pay attention to changes in various indicators of concrete
The use of tire rubber powder in concrete can delay the initial cracking time of concrete, reduce the length, width and number of cracks, and significantly improve the early cracking problem of concrete. Theoretically, with the increase in the amount of tire rubber powder 2YLYY225, the crack resistance of concrete will improve; at the same time, the mechanical strength of concrete and other indicators are also undergoing different changes. After the tire rubber powder is mixed into the concrete, the strength of the concrete is reduced, and the elasticity and frost resistance are improved.
2. Pay attention to the dispersion of tire rubber powder
In general, the higher the fineness of the tire rubber powder, the better the mixing effect in concrete. However, the smaller the particle size of the rubber powder, the more likely it is to agglomerate, which directly affects the performance of concrete during use. Therefore, when using tire rubber powder to improve the crack resistance of concrete, appropriate measures must be taken to improve the dispersibility of tire rubber powder in concrete, improve the mixing effect, and improve the overall performance of rubber concrete.
3. Pay attention to the fineness and dosage of tire rubber powder
When tire rubber powder is used to improve the crack resistance of concrete, tire rubber powder with a fineness between 80-120 meshes has a better application effect in concrete. Taking into account the mechanical strength, elasticity, crack resistance and frost resistance of concrete, generally about 20kg of tire rubber powder is added to each cubic meter of cement concrete. The concrete has better crack resistance, frost resistance, elasticity and mechanical strength. Relatively higher.
If a large number of waste car tires cannot be properly disposed of in time, it will have a serious impact on the natural environment, vegetation growth, and human health. Disposing of waste tires is a big problem that needs to be solved urgently. Processing waste tires into rubber powder is the main way of recycling waste rubber, and it is of great significance to study the application of tire rubber powder in concrete. When using tire rubber powder to improve the crack resistance of concrete, the addition of tire rubber powder will also affect the impermeability, abrasion resistance, and durability of concrete. The editor will continue to discuss with you later.
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