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Product overview


Dayu®The modified asphalt waterproofing membrane for road and bridge is a hot-melt waterproofing membrane composed of tire base, plastic body modified asphalt gum and surface material.


l fetal baseHigh quality filament polyester felt.

l GlialSBS (styrene-butadiene-styrene) or APP (random polypropylene) as a modifier to modify the petroleum asphalt, prepared into a dip coating gum, evenly coated on both sides of the tire base.

l Surface material: Polyethylene film, fine sand.




Product Features


High tensile strength, strong tear resistance, good dimensional stability, excellent mechanical properties, and strong resistance to breakage.

Excellent high temperature resistance, high temperature pavement environment does not flow, good durability.

Excellent fatigue resistance, long-term withstand road vibration without strain.

Mature hot melt method construction process, molten asphalt body lap, reliable bonding, lap firmly, suitable for all seasons.



Specification classification


Upper surface material

S (fine sand)

Lower surface material

PE (polyethylene film)/S (fine sand)









Scope of application


Applicable to road, bridge waterproof engineering.

Type I coil modified by SBS or APP is used for paving base surface of paving asphalt concrete; Type II coil modified by APP is used for paving base surface of pouring asphalt concrete mixture.



Construction process


Basic requirements: solid, dry, no sediment, laitance, no empty drum, loose, sand and other phenomena.

Interface treatment: uniform spray (roll) coating matching base treatment agent, improve the coil and the adhesion of the base.

Trial laying of coiled material: lay the coiled material flat on the base surface, align the elastic line or the overlapping edge of adjacent coiled material, adjust the overlapping width, and rewind after standing for a period of time to release the stress.

Hot melt paving: bake the lower surface and base surface of the coil with a flame, push the roll-paving coil forward in time after the colloid is melted, and compact and exhaust while it is hot to tightly bond the coil with the base layer.

Ontology lap joint: paving and pasting synchronous rolling lap joint edge until 5~8mm molten asphalt is extruded (regarded as reliable lap joint).




performance index


Products in accordance with the building materials standard "road and bridge with modified asphalt waterproofing membrane" JC/T974-2005 manufacturing.

The performance index meets the requirements of class R coil in the standard.


List of basic physical performance indicators of coiled materials:


Indicator (Type R)

Thickness of asphalt alteration layer on lower surface of coil

≥ 1.5mm(3.5mm coil)

≥ 2.0mm(4.5mm coil)

Soluble content

≥ 2400g/㎡(3.5mm coil)

≥ 3100g/㎡(4.5mm coil)

Heat resistance (can be higher)

No sliding, flowing and dripping at 115 ℃ (SBS type)

No sliding, flowing and dripping at 130 ℃ (APP Class I)

No sliding, flowing and dripping at 160 ℃ (APP Class II)

Low temperature flexibility (can be lower)

No crack at -25 ℃ (SBS type)

No crack at -15 ℃ (APP Class I)

No crack at -10 ℃ (APP Class Ⅱ)

Pull force

≥ 800N/50mm

Elongation at maximum tension



Coil application performance


Indicator (Type R)

50 ℃ shear strength

≥ 0.12MPa

Bonding strength at 50 ℃,

≥ 0.050MPa

Impermeability after hot rolling

0.1MPa, impervious to water for 30min

Joint deformation capacity

No damage in 10000 cycles


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