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Anchor sealing material suitable for anchor cable in turbulent region

An anchor cable and water flow technology, which is applied in the field of water conservancy and hydropower engineering, can solve the problems of anchor cable anchor force loss, poor durability, and low bonding strength.

Inactive Publication Date: 2019-03-26
POWERCHINA CHENGDU ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the invention is that at present, when the prestressed anchor cable is used for sealing anchor construction in the water flow turbulent area, the traditional anchor sealing material is used to seal the anchor, and the bonding strength is low. Anchor cable anchoring force loss and durability deterioration, etc.

Method used

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  • Anchor sealing material suitable for anchor cable in turbulent region
  • Anchor sealing material suitable for anchor cable in turbulent region

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preparation example Construction

[0030] The present invention also provides the preparation method of the above-mentioned anchoring material suitable for the anchor cable in the water flow turbulent zone, comprising the following steps:

[0031] A. Heat the epoxy resin at a temperature of 70-100°C for 3-5 minutes until it becomes glue-like;

[0032] B, add ethylenediamine and acetone in the glue-like epoxy resin that step A makes, mix homogeneously, obtain mixture A;

[0033] C, add cement and fine aggregate in the mixture A that step B makes, mix evenly, get viscous mixture B;

[0034] D. Add coarse aggregate to the mixture B prepared in step C, and mix evenly to obtain the anchor material suitable for the anchor cable in the water flow turbulent zone.

[0035] In order to ensure that each material is fully mixed, in step B, the time for uniform mixing is 2 to 5 minutes; in step C, the time for uniform mixing is 5 to 10 minutes; in step D, the time for uniform mixing is 5 to 5 minutes. 10min.

[0036] The...

Embodiment 1

[0039] The anchor material of the present embodiment includes the following raw materials in parts by weight: 205 parts of epoxy resin, 82 parts of ethylenediamine, 51 parts of acetone, 350 parts of cement, 685 parts of fine aggregate and 1027 parts of coarse aggregate;

[0040] The particle size of the fine aggregate is 0-5 mm; the particle size of the coarse aggregate is 5-15 mm;

[0041] The fine aggregate and coarse aggregate should be washed with clean water before use, and fully dried or dried, with a mud content of no more than 1.0% and a moisture content of no more than 0.5%.

[0042] The preparation method of anchor sealing material comprises the following steps:

[0043] A. Heat at 75°C for 5 minutes to make the epoxy resin into a glue-like shape;

[0044]B, add ethylenediamine, acetone to the glue-like epoxy resin that step A makes, fully mix and stir 5min, obtain mixture A;

[0045] C. Add cement and fine aggregate to the mixture A prepared in step B, fully mix a...

Embodiment 2

[0048] The anchor sealing material of this embodiment includes the following raw materials in parts by weight: 205 parts of epoxy resin, 82 parts of ethylenediamine, 51 parts of acetone, 350 parts of cement, 856 parts of fine aggregate and 856 parts of coarse aggregate;

[0049] The particle size of the fine aggregate is 0-5 mm; the particle size of the coarse aggregate is 5-15 mm;

[0050] The fine aggregate and coarse aggregate should be washed with clean water before use, and fully dried or dried, with a mud content of no more than 1.0% and a moisture content of no more than 0.5%.

[0051] The preparation method of anchor sealing material comprises the following steps:

[0052] A. Heat at 90°C for 4 minutes to make the epoxy resin into a glue-like shape;

[0053] B, add ethylenediamine, acetone to the glue-like epoxy resin that step A makes, fully mix and stir 5min, obtain mixture A;

[0054] C. Add cement and fine aggregate to the mixture A prepared in step B, fully mix ...

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Abstract

The invention discloses an anchor sealing material suitable for an anchor cable in turbulent region, belonging to the technical field of water conservancy and hydropower projects. According to the anchor sealing material, the technical problems a pre-stressed anchor cable in the turbulent region is relatively low in adhesion strength during the anchor sealing construction, an anchor sealing material is easily damaged by the scouring of water flow in the turbulent region, the anchor force of the anchor cable is lost, and the durability of the anchor cable is weakened at present are solved. Theanchor sealing material is prepared from the following raw materials in parts by mass: 200-300 parts of epoxy resin, 80-90 parts of ethanediamine, 50-55 parts of acetone, 350-380 parts of cement, 571-1141 parts of fine aggregates and 571-1141 parts of coarse aggregates. The 1d compressive strength of the prepared anchor sealing material is not less than 40MPa, the 7d compressive strength is not less than 50MPa, the 28d compressive strength is not less than 60MPa, and the bonding strength is not less than 3MPa, so that the anchor sealing material is very suitable for the anchor sealing treatment of an anchor end of the anchor cable in the turbulent region.

Description

technical field [0001] The invention belongs to the technical field of water conservancy and hydropower engineering, and in particular relates to an anchor sealing material suitable for anchor cables in water flow turbulent areas. Background technique [0002] The water flow in the flood discharge and energy dissipation area of ​​the hydropower station is seriously turbulent, with high edge velocity, turbulent water flow and high dissipation rate of turbulent kinetic energy. In order to prevent the bank slope from being washed and damaged, it is often necessary to set up anchor cables for protection. [0003] During the construction of conventional prestressed anchor cables, the lower anchor pier concrete is generally poured first. After the anchor cables are stretched and locked, conventional concrete is used to seal the anchors. The anchor materials used are all traditional concrete materials. However, for the anchor cable in the water flow turbulent area, the use of conve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B111/74
CPCC04B28/00C04B2111/00732C04B2111/74C04B2201/50C04B24/281C04B24/121C04B24/008C04B14/068
Inventor 杜震宇陈军谢金元刘跃金伟杨斌
Owner POWERCHINA CHENGDU ENG
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