Waterproof plugging is known to everyone, but most people have a hard time explaining its operating principle, so this article introduces the principle of waterlogging and leakage prevention and common sense.
The principle of waterproofing and leak repairing is to use the inherent chemical and porous properties of concrete, use water as a carrier, and react with the chemical substances in the concrete by the penetration of water. The components that are transported, filled in the capillary, and catalyzed the incompletely hydrated concrete again chemically react to form insoluble dendritic crystals and combine with the concrete as a whole, so that water and other liquids from any direction are blocked.
Everyone understands the principle of waterproof trapping. Next, let's take a look at the 28 common common sense of waterproof trapping. Although the content is relatively simple, you can refer to it. The specific content is as follows:
01, block rigid waterproof layer
Waterproof cement mortar infiltrated with the waterproofing agent is used as the bottom waterproof layer, and fast materials such as clay bricks are laid in the middle, and then waterproof cement mortar is used to grout and wipe the waterproof surface layer.
In order to control the embedding depth of the sealing material, to prevent the sealing material from bonding to the bottom of the seam, a deformable material is provided between the bottom of the seam and the sealing material.
03 、 Water storage roof
A certain level of water is stored on the roof waterproof layer to play a role in heat insulation.
04, planting roof
The roof is covered with soil or loose materials such as sawdust and vermiculite, and plants are planted on the waterproof layer of the roof.
The water-repellent insulation material is set on the roof of the waterproof layer.
06 、 Durability of waterproof layer
Refers to the period during which the roof waterproof layer can meet the requirements for normal use.
07.Asphalt waterproofing membrane
The base paper, fiber fabric, fiber felt and other carcass materials are used to dip the asphalt, and the surface is sprayed with powder, granular or sheet materials to make a curlable sheet waterproof material.
08.Polymer modified asphalt waterproof membrane
A curable sheet-like waterproof material is made of synthetic polymer modified bitumen as a cover layer, fiber fabric or fiber mat as a carcass, powder, granular, sheet or film material as a covering material.
A cold bituminous cement material formulated from petroleum asphalt, fillers, solvents, etc.
10.Synthetic polymer waterproof membrane
Based on synthetic rubber, synthetic resin, or a blend of the two as the base material, adding appropriate amounts of chemical additives and fillers, etc., after processing, it can be rolled into a sheet-like waterproof material, or the above materials are compounded with synthetic fibers Two or more layers of rollable sheet-like waterproof material.
Adopting self-adhesive waterproof coiled material, it does not need heat construction and does not need to be glued.
12.Waterproof leak-proof hot air welding method
A hot air welding torch is used for waterproofing coils, and bonding and bonding.
13.Asphalt-based waterproof coating
Water-emulsion or solvent-based waterproof paint formulated with asphalt as the base material.
14.Polymer modified asphalt waterproof coating
A water-emulsion or solvent-based waterproof coating formulated by using bitumen as a base material and modified with a synthetic high molecular polymer.
15, trapped synthetic polymer waterproof coating
A single-component or multi-component waterproof coating formulated with synthetic rubber or synthetic resin as the main film-forming substance.
16. Primary treatment agent
In order to enhance the adhesion between the waterproof material and the base layer, before the waterproof layer is applied, the paint on the base layer is brushed in advance.
In order to reduce cracks, pre-slits are provided on the roof leveling layer, rigid waterproof layer and rigid protective layer. The rigid protective layer is only made into a V-shaped groove on the surface, which is called a surface partitioned seam.
18.Waterproof and leak-proof empty paving method
When laying waterproof membrane, the membrane and the base layer are bonded only within a certain width of the periphery, and the rest is not bonded.
It refers to materials such as chemical fiber non-woven fabric and glass fiber mesh for reinforcement in the coating waterproof layer.
20.Cold sticking method (cold construction)
Adhesive or cold-cold emperor grease is used to bond the coil to the base layer, the coil to the coil, without the need for heating.
21 overhead insulated roofs
A thin product made of sintered clay or concrete, covering the roof waterproof layer and erecting a certain height space, using air flow to accelerate heat dissipation and play a role in heat insulation.
22, point stick method
When paving the waterproof coil, the coil or perforated coil and the base layer are applied in a point-like bonding method. There are no less than 5 points per square meter, and the area of each point is 101mm × 101mm.
23.Modified asphalt sealing material
A paste-like sealing material prepared by using bitumen as a base material, modified with an appropriate amount of a synthetic macromolecule, and adding fillers and other chemical additives.
24. Synthetic polymer sealing material
It is a paste-like sealing material mainly composed of synthetic polymer materials, adding appropriate amounts of chemical auxiliaries, fillers and colorants, and processed through a specific production process.
In the roof system, the joint gap changes due to temperature and external forces.
It reflects the ability of the sealing material to maintain the seal after being subjected to periodic tensile and compression cycles due to joint displacement due to temperature changes during use.
27, full stick method (full stick method)
When laying waterproof materials, the coil and the base layer are all bonded together.
28. Sticking method
When paving the waterproof coiled material, the coiled material and the base layer are bonded in a stripe construction method. Each coil has at least two bonding surfaces with the base layer, and the width of each strip is not less than 151mm.