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

A bonding prestressing and prepacking technology, which is applied in the direction of structural elements, building components, building reinforcements, etc., can solve the problems of low bonding strength and weak grip between the post-bonding slurry and the sheath

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-bonding slurry and the sheath of this pre-coated and bonded prestressed tendon is not large, and the bonding strength is low. Therefore, a new type of pre-coated and bonded prestressed tendon is developed. Muscles are 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

[0057] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0058] As shown in the accompanying drawings, the present invention includes a steel strand 1, a rear bonding slurry 2, and a sheath 3, the steel strand 1 is arranged in the sheath 3, and the rear bonding slurry 2 is filled in the steel strand 1 and the sheath 3 Between, it is characterized in that there is at least one concave configuration 4 on the inner surface of the sheath. figure 1 It is a structural schematic diagram of Embodiment 1 of the present invention. In each drawing, 1 is a steel strand, 2 is a bonding slurry, 3 is a sheath, and 4 is a concave structure. In the following drawings, those with the same number have the same description. Such as figure 1 As shown, the steel strand 1 is arranged in the sheath 3, and the post-bonding paste 2 is filled between the steel strand 1 and the sheath 3, and the inner surface of the sheath 3 has a con...

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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, the after-bonding agent is filled between the stranded wire and sheath. It is characterized by that the internal surface of the sheath is equipped with at least female structure, so that the bondability and bond strength between after-bonding agent 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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Patent Type & Authority Applications(China)
IPC IPC(8): E04C5/03
Inventor 邱则有
Owner 邱则有
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