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Cement-based capillary crystalline waterproof dam core wall

A permeable crystallization, cement-based technology, used in infrastructure engineering, water conservancy engineering, marine engineering and other directions, can solve the problems of large volume of concrete pouring for cushion and corridor, inability to combine well, and endangering dam safety, etc. To achieve the effect of strong adhesive force, simple waterproof construction and saving construction period

Inactive Publication Date: 2016-03-16
中国安能集团第一工程局有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The amount of concrete pouring for the cushion layer and corridors on the left and right banks of the hydropower station is large, and the contact surface of the clay with the filling material of the core wall is wide. Due to the different material properties of concrete and clay materials, the two cannot be well combined, and there are certain defects in the joint surface. If there is water seepage in this part, it is easy to form piping, which seriously endangers the safety of the dam.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The construction steps of the cement-based permeable crystalline waterproof dam core wall of the present invention are as follows:

[0018] (the dam core wall of cement-based permeable crystalline type waterproof of the present invention, its construction steps are:

[0019] (1) Before painting cement-based permeable crystalline waterproof paint, pre-treat the concrete base of the dam core wall, check the concrete structure, and mark the parts that need to be strengthened as honeycomb pockmarked parts;

[0020] (2) Clean up the honeycomb pitted surface of the marked part that needs to be strengthened until it is firm, and fresh stones are exposed and rinsed with water;

[0021] (3) Remove stains, dust, release agents, loose floating objects and other attached substances attached to the concrete surface;

[0022] (4) Use concrete that is one grade higher than the original structural concrete to fill up the marked parts that have been processed and need to be strengthene...

Embodiment 2

[0026] The construction steps of the cement-based permeable crystalline waterproof dam core wall of the present invention are as follows:

[0027] (1) Before painting the cement-based permeable crystalline waterproof coating, pre-treat the concrete base of the dam core wall, check the concrete structure, and mark and mark the parts that need to be strengthened as the construction joints caused by the secondary pouring ;

[0028] (2) Clean up the marked parts that need to be strengthened, and clean up the construction joints caused by the secondary pouring, which is to open the weak parts in the construction joints with square grooves of 2.5-3cm in length and width;

[0029] (3) Remove stains, dust, release agents, loose floating objects and other attached substances attached to the concrete surface;

[0030] (4) Use concrete that is one grade higher than the original structural concrete to fill up the marked parts that have been processed and need to be strengthened to ensure...

Embodiment 3

[0034] The construction steps of the cement-based permeable crystalline waterproof dam core wall of the present invention are as follows:

[0035] (1) Before painting cement-based permeable crystalline waterproof paint, pre-treat the concrete base of the dam core wall, check the concrete structure, and mark the parts that need to be strengthened for the exposed concrete anchors;

[0036] (2) Clean up the marked parts that need to be strengthened, and clean up the exposed concrete anchors, first chisel 2.5-3cm thick concrete, and then cut off the anchors;

[0037] (3) Remove stains, dust, release agents, loose floating objects and other attached substances attached to the concrete surface;

[0038] (4) Use concrete that is one grade higher than the original structural concrete to fill up the marked parts that have been processed and need to be strengthened to ensure that the new and old concrete are firmly combined or reinforced with reinforcing materials;

[0039] (5) Clean t...

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PUM

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Abstract

The invention provides a cement-based capillary crystalline waterproof dam core wall and relates to a concrete reinforcing method, in particular to a cement-based capillary crystalline waterproof dam core wall in a tunnel spillway of a power station. The construction method of the cement-based capillary crystalline waterproof dam core wall comprises the steps that (1) the concrete base surface of the dam core wall is pretreated before cement-based capillary crystalline waterproof paint is sprayed, a concrete structure is checked, and the parts needing to be reinforced are labeled with marks; (2) the labeled parts are cleaned; (3) dirt, dust, a release agent, floating substances and other substances adhering to the surface of the concrete are removed; (4) the treated marked parts needing to be reinforced are filled with concrete with the strength higher than that of the concrete of the dam core wall by one mark to be level, and firm combination of the new concrete and original concrete is guaranteed or reinforcement is conducted by means of reinforcing materials; (5) the base surface is washed and splashed wet repeatedly through water; and (6) clear cleaning water is sprayed onto the concrete surface, sprayed with the cement-based capillary crystalline waterproof paint, of the dam core wall, and maintenance is conducted for 24 hours. The cement-based capillary crystalline waterproof dam core wall is easy to construct, and operation is convenient.

Description

technical field [0001] The invention relates to a concrete reinforcement method, in particular to a cement-based permeable crystalline waterproof dam core wall in a flood discharge tunnel of a power station. Background technique [0002] The amount of concrete pouring for the cushion layer and corridors on the left and right banks of the hydropower station is large, and the contact surface of the clay with the filling material of the core wall is wide. Due to the different material properties of concrete and clay materials, the two cannot be well combined, and there are certain defects in the joint surface. If there is water seepage in this part, it is easy to form piping, which seriously endangers the safety of the dam. Contents of the invention [0003] The purpose of the present invention is to overcome the defects of the prior art, and provide a cement-based permeable crystalline waterproof dam core wall which can effectively solve the poor combination of concrete and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B3/16E02B8/06E02D15/02
CPCE02B3/16E02B8/06E02D15/02
Inventor 梁龙群赵方兴刘跃龙李小联唐培武曾国强李建国刘琪贾意段元辉
Owner 中国安能集团第一工程局有限公司