15.24 steel strand manufacturer

　　The 15.24 steel strand manufacturer believes that studying the corrosion inhibition effect of steel strands, and the model established based on the experimental results can effectively predict the crack width of the oxide, and reasonably considering the filling of the oxide can improve the accuracy of the prediction model. Due to the lack of installation space for other sensors to solve this problem, it is easy to cause low encapsulation survival rate and low technical content. Based on the composite cutting delay model theory, the theoretical analysis of the tensile stress ratio of the composite cutting delay model is established. Therefore, steel strands and inclination angles are developed as parameter changes. To determine the change range of the FBG sensor, a comparative analysis of the model bridge test results shows that the longitudinal reinforcement has no effect on the test results, while the periodic signal generated by the reinforcement has a greater impact on the test results, meeting the requirements. Actual test requirements.
　　The 15.24 steel strand manufacturer believes that steel strands are widely used in many industries. Prestressed concrete steel strands entered the practical stage in the 1950s. However, the basic principle of prestressing is not only applicable to steel strands but has also been applied in many aspects in ancient times. The annular column is a good example. It applies a certain pressure to the loose cylindrical wedge body to form a cylinder, which can withstand sufficient lateral water pressure. This is the early principle of prestressing.
　　The 15.24 steel strand manufacturer believes that the advantages of prestressed concrete steel strand structures and the application of prestressing in concrete components are mainly to overcome the shortcomings of low tensile strength of concrete and make full use of high-strength steel. When the tensile stress of the steel bar reaches 250 MPa, the crack width reaches 0.2-0.3 meters. At this time, the durability of the component decreases, and it is not suitable for high-humidity or corrosive working environments. The role of prestressed steel strands is to create prestress in the component before loading, thereby controlling the tensile stress level of the component, or even making the component compressive. In order to avoid early cracking of reinforced concrete components, high-strength steel bars and high-strength concrete are fully utilized to improve their performance and durability.
　　(1) Due to the effective use of high-strength steel strands and accelerators, prestressed concrete steel strands can be used to create slender load-bearing structures with larger spans and lighter self-weight than ordinary reinforced concrete;
　　(2) Prestressed steel strands can improve the service performance of concrete structures, effectively prevent concrete cracking, or at least limit the crack width to a harmless level, and improve the durability of the structure;

Storage and Use Instructions for Steel Strands  

I. Storage

Prestressed steel strands should be stored in a dry warehouse. For outdoor and on-site storage, sleepers should be laid on the ground, and direct contact with damp ground should be strictly prohibited. Tarpaulins or rain shelters should be added, and the storage period should be shortened as much as possible. In special environments, rust-proof packaging should be used during ordering. Surface rust on prestressed steel strands does not affect use, but rust that is visually visible (pitting) will affect its mechanical properties.

II. Hoisting

Prestressed steel strands should be hoisted and placed one by one in an orderly manner with gaps left between them. Unbonded prestressed steel strands should be hoisted in parallel using three hemp rope loops. Steel wire ropes should not be used for direct hoisting. Rolled prestressed steel strands should be hoisted using forklifts or special lifting tools to prevent breakage and scattering.