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Seepage-proofing processing method of channel concrete panel crack

A technology for a concrete panel and a treatment method, which is applied in water conservancy projects, marine engineering, construction, etc., can solve the problems that resin mortar is difficult to adapt to large deformation, difficult to apply uniform pressure, and high cost, and can improve the bonding, sealing, water-stopping effect and resistance to resistance. The effect of water flushing and peeling ability, improving adhesive strength and reducing peeling effect

Inactive Publication Date: 2010-05-05
HENAN PROVINCIAL WATER CONSERVANCY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

If this method is used to deal with the problem of channel face crack leakage, the existing defects are: ①The process is cumbersome and the cost is high; ②The channel face plate is thin, and its crack deformation is larger than that of the dam surface, and the resin mortar on the leveling layer and the surface is difficult to adapt to large Deformation requirements, easy to break; ③ Paste the sheet on site, the glue is difficult to apply uniform pressure on the inclined surface during the pressurization and curing process, and it is easy to warp and form a leakage channel
[0006] Due to the above-mentioned defects, the usual methods currently used are difficult to meet the needs of the anti-seepage treatment technology for channel panel cracks

Method used

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  • Seepage-proofing processing method of channel concrete panel crack
  • Seepage-proofing processing method of channel concrete panel crack
  • Seepage-proofing processing method of channel concrete panel crack

Examples

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Embodiment 1

[0023] In this embodiment, the crack width is 1-3 mm.

[0024] 1. Material properties

[0025] The elastic anti-seepage material is selected as the HPU-2 sealant produced by Henan Sida Engineering Technology Co., Ltd. The main performance indicators: the tensile strength of the coating film is 4.0MPa, the elongation at break is 560%, and the bonding strength is 2.5MPa (the base surface is painted ZP-1 primer produced by Henan Sida Engineering Technology Co., Ltd.), the surface drying time is 2 hours, and the color is off-white (similar to the color of concrete).

[0026] 2. Construction technology

[0027] (1) marking line: such as figure 1 and figure 2 As shown, on the channel concrete panel 1, take the irregular crack 2 as the center line, draw two marking lines 3, 3' on both sides, and the distance between the marking lines (that is, the width of the groove) is 6 cm, so as to ensure the crack bonding width and suitable seepage path.

[0028] (2) Groove grinding: Use a...

Embodiment 2

[0036] In this embodiment, the width of the crack 2 is 3-5 mm, and the primer 6 and elastic anti-seepage material 7 used are SK polyurea and the matching SK-BE14 primer produced by Beijing Kehaili New Building Material Development Co., Ltd. agent, its performance parameters: tensile strength 10.3MPa, elongation at break 276%, bonding strength 2.1Mpa, primer dosage 250g / m 2 ; Groove width 5cm, depth 4mm, the vertical and horizontal groove transitions in a circular arc, the radius of curvature of the circular arc is 0.6mm; stick a layer of plastic adhesive tape along the surface of the crack 2 as the isolation layer 5, and the width is 7mm; other implementations are the same example 1.

Embodiment 3

[0038] In this embodiment, the width of the crack 2 is 0.1-1 mm, and the elastic material used is SF-1 polysulfide sealant produced by Henan Sida Engineering Technology Co., Ltd. and the matching primer. Its performance parameters: tensile strength 2.1MPa, elongation at break 260%, bonding strength 1.6Mpa, primer dosage 400g / m 2 ; Groove width 12cm, depth 2mm, the vertical and horizontal groove transitions in a circular arc, the radius of curvature of the arc is 0.3mm; paste a layer of kraft paper adhesive tape along the surface of the crack 2 as the isolation layer 5, and the width is 10mm; other implementations are the same example 1.

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Abstract

The invention belongs to the seepage-proofing technology field and in particular discloses a seepage-proofing processing method of a canal concrete panel crack; by taking the crack as a central line, a concrete panel crack is ground into a groove on site, an isolation layer is adhered or coated on the inseam surface of the groove, primer is coated on the inner surface of groove at two sides of the isolation layer, and then elastic seepage-proofing material is filled until the seepage-proofing material is leveled with the panel. The seepage-proofing processing method has the beneficial effects that: (1) the concrete for canal lining is C15-C30, an angle grinder is used to grind the groove easily; (2) the isolation layer is adhered or coated on the inseam surface of the groove, so as to be beneficial to leading material to be deformed with the seam; (3) high-intensity high-elongation elastic material is filled in the crack to meet water pressure function and to be adaptive to the deformation of the crack; (4)the primer is coated to improve the adhering and sealing effect of the elastic material and the concrete polished surface and current scouring and stripping resistant capacity; (5) the seepage-proofing material is leveled with the canal panel, so as to reduce the stripping function of the water current to the material, and the seepage-proofing material is leveled can not block water; (6) the construction speed is rapid and the manufacturing cost is low; (7) the method is suitable for impounding reservoir and sewage pool engineering and the like.

Description

technical field [0001] The invention belongs to the technical field of anti-seepage, and in particular relates to an anti-seepage treatment method for cracks in concrete panels of channels. Background technique [0002] Concrete-lined channels have been widely used in various water delivery projects. On the one hand, during the lining construction process of the channel concrete lining panel, due to the influence of various factors such as mix ratio, maintenance, and split joints, the construction control is not good, and cracks are easy to form, especially surface cracks; on the other hand, during the operation of the project, Due to its thinness (generally no more than 20cm), and mostly plain concrete, the thermal expansion and contraction deformation is relatively large, and cracks are easily formed; at the same time, the uneven settlement deformation of the foundation and frost heaving in the northern region will also cause cracks in the channel panel. [0003] For cana...

Claims

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Application Information

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IPC IPC(8): E02B3/16
Inventor 蒋学行李翠玲杜明杨秋贵杨东英尹向东张华
Owner HENAN PROVINCIAL WATER CONSERVANCY RES INST
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