EVA, which stands for ethylene vinyl acetate, a kind of chemical resin, and ECB, which stands for ethylene copolymer bitumen, has excellent durability and can adhere the joint between sheets easily with heat and can realize the perfect waterproof and prevention of root penetration as adhesion condition is verified by injecting high air pressure to the joint area.
Waterproof sheet for road,
railroad tunnel
Waterproof sheet for subway,
underground drive way
and tunnel
Waterproof sheet for man-made
lake, dam, fish farm, pool and
other underground structures
Joint area of non-woven fabric and
waterproof sheet
Nail the non-woven fabric with
integrated waterproof sheet on the
shortcrete
Join waterproof sheet and
waterproof sheet with heat after
overlapping them
| EVA | ECB | VE | |||
|---|---|---|---|---|---|
| Integrated type | Integrated embossed | Removable type | Integrated type | Integrated embossed | |
| Roundel Method | Not used | Not used | Used | Not used | Not used |
| Waterproof Membrane Structure | ?Translucent ?Good flexibility ?Non-woven fabric is incorporated with waterproof membrane |
?Sheet is embossed ?Good flexibility ?Non-woven fabric is incorporated with waterproof membrane |
? Opaque with two colors of black and white, Has Insufficient flexibility in the normal temperature | ? Opaque with
two colors of
black and white,
Has Insufficient
flexibility in the
normal temperature ? Non-woven fabric is incorporated with waterproof membrane |
? Transparent/ good
flexibility ? Non-woven fabric is incorporated with waterproof membrane ? Transparent, enable to check internal condition ? Mixed with polyethylene of ultra low density |
| Constructability | Good | Good | - | Good | Good |
| Economic feasibility | Good | - | - | Good | - |
| Effectiveness | Good | Best | - | Good | Good |
| Comprehensive comment | ? Since it has good
flexibility, it can be
used adhered to
the tunnel freely
according to the form
of curve ? Economic construction is possible ? Shorten construction period |
? Complement the slag
and damage in the
ceiling at waterproof
sheet, which is
the problem of
construction method ? Good for concrete pouring |
? Damage to waterproof membrane is inevitable and the constructability is poor by the complex construction method | ? Complemented the poor constructability of removable-type | ? Maintain the strengths of
EVA integrated type ? Since the price is expensive, economic feasibility is low ? Transparency, tensile strength and elongation percentage are good |
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