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Construction method for waterproof renovation of railway concrete roof

A construction method and concrete technology, applied in the direction of roofing, roof covering, roofing using sealing aggregates, etc., can solve the problems of loss of waterproof performance, poor aging resistance, and water leakage of coiled materials, so as to improve construction efficiency and improve construction efficiency. Waterproof effect, improved aging resistance, anti-penetration effect

Pending Publication Date: 2021-12-07
CRSC ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the waterproof layer of the canopy roof of the railway concrete station building is basically a modified asphalt waterproof membrane. The original membrane waterproof layer of the platform canopy roof has poor aging resistance, and it is unstable such as hollowing, fracture, and peeling. At the same time, the aging membrane also loses its waterproof performance, and there is a risk of water leakage at any time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] A construction method for waterproof renovation of a railway concrete roof, comprising the following steps:

[0060] (1) Remove the old waterproof layer, repair the cracks and holes on the concrete base surface and other defects that affect the waterproof construction, and the inner corners need to be treated with circular arcs; for the sandy roof concrete, brush or spray water-based acrylic after cleaning Lotion;

[0061] (2) Apply water-based epoxy primer on the cleaned concrete base surface. After the surface is dry, apply the liquid coil on the detail nodes, then spread the non-woven fabric, and then apply the liquid coil, and the surface is dry. Then spray a liquid coil on the concrete base as a whole;

[0062] (3) Spray quick-setting waterproof paint on the dried liquid coil, the construction thickness is 1.5mm, and a high-elastic and weather-resistant waterproof layer can be formed after drying.

[0063] In this embodiment, the water-based epoxy primer is prepa...

Embodiment 2

[0067] A construction method for waterproof renovation of a railway concrete roof, comprising the following steps:

[0068] (1) Remove the old waterproof layer, repair the cracks and holes on the concrete base surface and other defects that affect the waterproof construction, and the inner corners need to be treated with circular arcs; for the sandy roof concrete, brush or spray water-based acrylic after cleaning Lotion;

[0069] (2) Spray the water-based epoxy primer on the cleaned concrete base surface. After the surface is dry, first apply the liquid coil on the detail nodes, then spread the non-woven fabric, and then apply the liquid coil. After the surface is dry Then spray a liquid coil on the concrete base as a whole;

[0070] (3) Spray quick-setting waterproof paint on the dried liquid coil, the construction thickness is 3mm, and a high-elastic and weather-resistant waterproof layer can be formed after drying;

[0071] (4) Spray a layer of water-based silicone high-e...

Embodiment 3

[0076] A construction method for waterproof renovation of a railway concrete roof, comprising the following steps:

[0077] (1) Remove the old waterproof layer, repair the cracks and holes on the concrete base surface and other defects that affect the waterproof construction, and the inner corners need to be treated with circular arcs; for the sandy roof concrete, brush or spray water-based acrylic after cleaning Lotion;

[0078] (2) Apply water-based epoxy primer on the cleaned concrete base surface. After the surface is dry, apply the liquid coil on the detail nodes, then spread the non-woven fabric, and then apply the liquid coil, and the surface is dry. Then spray a liquid coil on the concrete base as a whole;

[0079] (3) Spray quick-setting waterproof paint on the dried liquid coil, the construction thickness is 5mm, and a high-elastic and weather-resistant waterproof layer can be formed after drying;

[0080] (4) Spray a layer of water-based silicone high-elastic wate...

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Abstract

The invention relates to the technical field of concrete roof waterproofing, and particularly relates to a construction method for waterproof renovation of a railway concrete roof. The construction method comprises the steps that an old waterproof layer is removed; a waterborne base coat is brushed or sprayed on the cleaned concrete base surface, after the surface is dried, a liquid coiled material is brushed on detail joints firstly, then non-woven fabric is laid and pasted, then the liquid coiled material is brushed, and after the surface is dried, the liquid coiled material is sprayed on the whole concrete base surface; and a quick-setting waterproof coating is sprayed on the dried liquid coiled material, and a high-elasticity weather-proof waterproof layer can be formed after drying. Through interaction among a sand consolidation base coat, the waterborne base coat, the liquid coiled material and the sprayed quick-setting waterproof coating, the problem of waterproof renovation of the railway concrete roof is thoroughly solved, the aging-resistant age limit of the roof is prolonged, the service life of the roof is prolonged, and the maintenance cost is reduced.

Description

technical field [0001] The invention relates to the technical field of waterproofing of hydraulic concrete roofs, in particular to a construction method for waterproofing renovation of railway concrete roofs. Background technique [0002] At present, the waterproof layer of the canopy roof of the railway concrete station building is basically a modified asphalt waterproof membrane. The original membrane waterproof layer of the platform canopy roof has poor aging resistance, and it is unstable such as hollowing, fracture, and peeling. At the same time, the aging membrane also loses its waterproof performance, and there is a risk of water leakage at any time. According to the failure state of the coil, it involves various factors such as suitable materials, material quality, construction process, rainwater composition, etc., and optimizes the maintenance construction plan to ensure the construction quality, the service life of the waterproof coating and the operation safety of...

Claims

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Application Information

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IPC IPC(8): E04G23/03E04D7/00C09D121/02C09D195/00C09D7/61C09D153/02C09D111/02C09D125/14C09D175/04
CPCE04G23/0281E04D7/00C09D121/02C09D7/61C09D111/02C09D195/00C09D125/14C08K2003/265C08L95/00C08K3/26C08K3/34C08K3/346C08L53/02C08L25/14C08L75/04
Inventor 吴文昊杨卫东孙亮
Owner CRSC ENG GRP CO LTD