Slow Bonding Steel Strand

Slow bond prestressing means that the prestressed steel strand can expand and deform freely in the construction stage and does not bond with the surrounding retarding adhesive, while the prestressed tendon can bond with the surrounding concrete through the solidified retarding adhesive in the predetermined period after the construction is completed. Slow bond prestressing technology is a new prestressing technology developed after unbonded and bonded prestressing technology. The construction characteristics of slow bond prestressing absorption without bond and the mechanical characteristics of bond.

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Slow Bonding Steel Strand

The construction is the same as the unbonded prestressing, the layout is flexible, the single hole anchor is used, and the bellows and grouting are not required. After curing, the retarding adhesive finally achieves the adhesive effect in mechanics.

It is a form of prestress that realizes the gradual transition from unbonded to bonded between prestressed tendons and concrete by curing with slow binder. It means that in the construction stage, the prestressed tendons can be telescopic and free deformation, and do not bond with the surrounding retarding adhesive, and in the predetermined period after the completion of the construction, the prestressed tendons can bond with the surrounding concrete through the solidified retarding binder, and the prestressed tendons and the surrounding concrete form a body and work together to achieve the adhesive effect. The slow bonded prestressed steel strand is composed of three parts: steel strand (bare wire), slow setting adhesive and outer sheath

Various Steel Strands

Prestressed Anchor

Related Products

Prestressed Steel Strand

Steel strand corrosion resistance is better: bimetal no residue, better corrosion resistance. The horizontal continuous casting process uses high temperature melting, and the residue will overflow the copper surface after calcination, and will not remain in the rigid conductor covered with copper, so there will be no internal corrosion. When flat steel or building foundation is used as the grounding body, the reliability of steel strand grounding device is affected by poor corrosion resistance. Galvanized Angle steel (round steel) as a grounding body, slow steel corrosion. However, because zinc is more active than steel, zinc corrodes faster than steel. Due to the Angle between the galvanized layer and the soil, the corrosion is constantly changing, the stability is poor, the service life is short (generally less than 5 years), and a lot of work needs to be done.

Unbonded Steel Strand

Non-stick steel strand technology has been applied many times in social practical system engineering, especially in the vertical and vertical development directions of three-way prestressed box girder. Good performance. The application of longitudinal reinforcement bars in prestressed simple supported beams makes the small span first free from the tension bench, and then free from the process of hole formation and grouting, thus reducing the construction equipment.

Steel Strand for Concrete

The application of prestressed steel strand in concrete beams is very wide, including Bridges, high-rise buildings and water conservancy projects. Among them, bridge is one of the main fields of application of prestressed steel strand. As an important part of transportation, the quality and safety of Bridges are crucial to social development. The use of prestressed steel strand can greatly improve the bearing capacity and durability of the bridge, and ensure the safe operation of the bridge.

Various Steel Strands

According to the use of classification: prestressed steel strand, (electric) galvanized steel strand and stainless steel strand, which prestressed steel strand coated with anti-corrosion grease or paraffin after the package of HDPE is called unbonded prestressed steel strand, prestressed steel strand is also galvanized or galvanized aluminum alloy steel wire made.

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