Integral-filled type plastic-coated steel twisted line

Abstract

The invention relates to an entire filling plastic coating steel strand that includes a core thread and plural side track. The feature is that it is coated a HDPE plastic anticorrosion insulation, and HDPE plastic anticorrosion layer is also filled in the clearance between core thread and side track. It has good anticorrosion capability, and has the same mechanical properties and utilization property as normal PC steel strand.

Description

Technical field: [0001] The invention relates to a component for prestressed engineering, in particular to an integrally filled plastic-coated steel strand for non-adhesive engineering. Widely used in anchor cables for non-bonded construction methods. Background technique: [0002] At present, steel strands as one of the main components of prestressed engineering, especially steel strands used in unbonded construction methods, generally use smooth steel strands with HDPE protective sleeves to improve their corrosion resistance, or The surface of the smooth steel strand is sprayed with one or two layers of metal, see Figure 1 and Figure 2. Or spray epoxy resin on the surface of each steel wire of the smooth steel strand, see Figure 3. Or be the patent shown in 03259753.3 as the patent No. that the applicant applies for: spray epoxy resin on the appearance of smooth steel strand and its gap, referring to Fig. 4. In the first three structures, there are gaps between the stee...

AI Technical Summary

Problems solved by technology

In the first three structures, there are gaps between the steel wires of the steel strand, and corrosive media such as water and air will enter these gaps from the end, resulting in insufficient corrosion protection of the steel strand

The fourth structure has excellent anti-corrosion performance, but its cost is relatively high

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