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How to distinguish between bonded and unbonded strands?

The outer side of the unbonded steel strand does not have a rubber sheath. Unbonded steel strands are mainly used in post-tensioning systems. The difference between unbonded steel strands and bonded steel strands is that the prestress is not bonded to the surrounding concrete. During its working period, longitudinal relative sliding between the prestress and the surrounding concrete is always allowed. The prestress is completely transferred to the concrete by the anchor.

2021

11-09

Unbonded steel strand: Applications of steel strand

Unbonded steel strands: Applications of steel strands Steel strands are commonly used in the production of prestressed concrete for prefabricated beams and prefabricated floor slabs used in various construction projects and bridge construction. The main constituent material of steel strands is steel wire, which is a steel product made by twisting steel wires together. In daily use, electroplating can be applied to the surface if necessary. For example, zinc plating, copper plating, etc.

2021

11-03

Mining Rock Bolts: How are mining rock bolts installed?

Mine support anchors refer to the method of dividing the main cable of a suspension bridge into multiple steel strands when fixing it to the side holes, and attaching them to anchor blocks respectively. Anchor lines are fixed to the slope at the outer end and to the stable rock mass within the sliding surface at the other end. Prestressed steel strands across the slope sliding surface directly generate sliding resistance on the sliding surface, increasing sliding frictional resistance, tightening the structural surface, and improving the integrity of the slope bedrock. Therefore, it fundamentally improves the mechanical properties of the bedrock, effectively controls the displacement of the bedrock, and enhances safety.

2021

10-31

What is the process of manufacturing mining rock bolts?

What is the process of mining anchor cable? Drilling is an important step in controlling the construction period of mining anchor cables. In order to ensure drilling efficiency and quality, DTH impact drill is used. When drilling, according to the design length of the anchor chain, the required drill bits are placed neatly. After using the drill bit, the hole depth is also accurately placed in place. The drilling depth should exceed the design length of the anchor cable by about 0.5 meters.

2021

10-28

Explanation of Unbonded Strand and its Functions by the Manufacturer

The common explanation from steel strand manufacturers for unbonded steel strands is the application of a layer of grease and a plastic sheath on the steel strand (which can also be called bare wire). During engineering construction, due to the presence of grease and sheath outside the concrete, the unbonded steel strand embedded in the concrete can be freely loosened, keeping the steel strand isolated from and in an unbonded state with the concrete, hence it is called an unbonded steel strand.

2021

10-27

What types of steel strands are there from steel strand manufacturers?

Strand from strand manufacturers is a steel product composed of multiple steel wires. The carbon steel surface can be coated with epoxy, copper, zinc, zinc-aluminum alloy, or aluminum, as needed.

2021

10-07

Choosing a mining steel wire rope manufacturer requires considering comprehensive strength?

When purchasing mining steel wire ropes, most people choose to go directly to the manufacturer. This is because it is not only cheaper but also ensures better quality. However, there are many manufacturers of mining steel wire ropes on the market today, so when choosing, you need to consider their overall strength. Let's take a detailed look.

2021

10-04

What is the function of 15.24 steel strand?

The six characters "15.24 steel wire strand" do not mean that everyone knows their meaning, so some people will listen. So, what does "15.24 steel wire strand" mean? Where does it usually appear? These questions need to be clarified. Below, we introduce 15.24 steel wire strand from three aspects. So, let's learn about the function of 15.24 steel wire strand!

2021

10-01

Applications and operating methods of 15.24 steel strands

15.24 steel strands have many uses, such as in some building projects, the construction of bridge prefabricated components, and the construction of various prefabricated components. However, what is closer to our lives is prestressed concrete produced with prestressed plates. The production process of prestressed concrete can be divided into two categories, so let's learn about the uses and operating methods of 15.24 steel strands!

2021

09-28

What are the functions of mining steel wire ropes?

There are many types of steel strands, so different industries should purchase them according to their specific needs. Mining steel strands are definitely used in the mining industry. To help everyone understand them better, let's introduce their main functions below. If you want to know more, please read on.

2021

09-24

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Longheng

specializing in the production of various specifications of prestressed concrete with steel strand, prestressed steel wire, unbonded prestressed steel strand and so on...

Tianjin Longheng Prestressed Steel Strand Co., Ltd.

After-sales hotline:022-68603799  
Email: tjlhyyl@163.com

Headquarters address:North 301600 of Beihua Road, Jinghai Development Zone, Tianjin

Copyright©2023 Tianjin Longheng Prestressed Steel Strand Co., Ltd.

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