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What are the disadvantages and advantages of asphalt waterproofing membrane?
Advantages:

1, good waterproof performance, high efficiency, seamless connection and no water channeling. It is unique for objects with special-shaped structures or complex shapes, and the construction is very simple and convenient.

2, strong adaptability to the base, and can be used on the base materials such as reinforced concrete, profiled steel plates, plastics and various masonry materials.

3. The spraying surface treatment is simple, there is no special requirement for leveling layer, and the construction can be carried out directly when the humidity is lower than 80%.

4, strong puncture resistance, because there is rubber inside, good ductility. It can be perfectly combined with the base material at the bottom of the structure and the building structure at the top without separation and delamination, forming an integrated seamless waterproof system.

5, environmental protection, water-based, non-toxic, tasteless, non-flammable, non-corrosive, harmless to human health and the environment.

6, mildew and antibacterial, can effectively inhibit the growth of algae and fungi, anti-aging, high chemical corrosion resistance, strong air permeability.

Disadvantages:

1. For the base course with complex appearance, it is necessary to splice multiple pieces, and it is difficult to bond the overlapping parts of materials, which affects the appearance of the waterproof layer.

2. It is difficult to achieve absolute sealing at the overlapping parts of materials, and there is a big hidden danger of water leakage.

3. Post-maintenance will be more troublesome.

Extended data

Asphalt waterproofing membrane is low in cost, low in tensile strength and elongation, poor in temperature stability, easy to flow at high temperature and brittle at low temperature; Poor aging resistance and short service life, belonging to low-grade waterproof coiled material.

Waterproof membrane requires good water resistance and stability to temperature changes (no flow, no foaming and no stirring at high temperature; Not brittle at low temperature), certain mechanical strength, ductility and fracture resistance, certain flexibility and aging resistance. ?

According to its main waterproof components, it can be divided into asphalt waterproof material, polymer modified waterproof membrane and synthetic polymer waterproof membrane (SBC 120 polyethylene polypropylene composite membrane). There are PVC, EVA, PE, ECB and other waterproofing materials.

Asphalt waterproofing membrane is a coiled sheet waterproof material made by dipping asphalt on the base tire (such as base paper and fiber fabric) and then sprinkling powder or sheet isolation material on the surface.

Compared with the traditional oxidized asphalt, the application temperature range of modified asphalt waterproofing membrane is much wider, and the membrane can be made into a single layer with a thickness of 3-5 mm, which has a reliable waterproof effect of 15-20 years.

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