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Tendon of wrapping mortar on it in advance and bonded in later

A bonding prestressing and prepacking technology, applied in the direction of structural elements, building components, building reinforcements, etc., can solve the problems of small gripping force and low bonding strength.

Inactive Publication Date: 2005-11-16
邱则有
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the gripping force between the post-adhesive slurry and the sheath and between the sheath and the concrete in the structure after this pre-coated grouting bonded prestressed tendon is not large, and the bonding strength is low. Therefore, a kind of A new type of pre-coated and bonded prestressed tendon is urgently needed

Method used

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  • Tendon of wrapping mortar on it in advance and bonded in later
  • Tendon of wrapping mortar on it in advance and bonded in later
  • Tendon of wrapping mortar on it in advance and bonded in later

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0034]As shown in the accompanying drawings, the present invention includes a steel strand 1, a post-bonding slurry 2, and a sheath 3. The steel strand 1 is arranged in the sheath 3, and the space between the steel strand 1 and the sheath 3 is filled with post-bonding The pulp 2 is characterized in that the inner surface of the sheath 3 is provided with a concave structure 4, and at the same time, the outer surface of the sheath 3 is also provided with a convex structure 5, and the convex structure 5 on the outer surface is in contact with the concave structure 4 on the inner surface. Stacked. Fig. 1 is a schematic structural diagram of Embodiment 1 of the present invention. In each drawing, 1 is a steel strand, 2 is a post-bonding slurry, 3 is a sheath, 4 is a concave structure, and 5 is a convex structure. In the following drawings, the same numbers ...

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PUM

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Abstract

The present invention relates to a bond-prefilled after-bonding prestressed reinforcement, including stranded wire, after-bonding agent and sheath. The stranded wire is placed in the sheath, and between the stranded wire and sheath the after-bonding agent is filled. It is characterized by that internal surface of the sheath is equipped with a female structure, at the same time the external surface of the sheath also is equipped with a male structure, the above-mentioned female structure and male structure can be superimposed together, so that the bondability and bond strength between after-bonding agent and sheath and between concrete and sheath can be greatly raised. The invented product can be extensively used in the engineering structures of industrial and civil buildings, irrigation works power, port, road and bridge, etc.

Description

(1) Technical field [0001] The invention relates to a bonded prestressed tendon after pre-clad grouting. (2) Background technology [0002] Compared with the steel structure, the prestressed concrete structure in the engineering structure is cheap, energy-saving, and easy to manufacture. It is used in the environment of corrosive media, and has light corrosion, low maintenance cost and long service life. Therefore, for a long time, prestressed concrete structures have been widely used in engineering structures such as industrial and civil buildings, water conservancy, electric power, ports, roads and bridges. For general civil structures, especially those with large spans, post-tensioned bonded prestressed tendons are widely used. The tubes are bonded to form a whole. The post-tensioning process of this pressure grouting operation generally includes laying casings, pouring concrete, threading cables, tensioning, grouting, and anchor sealing. A set of grouting equipment is ...

Claims

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Application Information

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IPC IPC(8): E04C5/03
Inventor 邱则有
Owner 邱则有
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