Treatment

Definition

Product applied

Process

STRAIN ABSORBING MEMBRANE INTERLAYER

(SAMI)

A modified bituminous interlayer applied immediately below the wearing course to absorb reflective cracking from the underlying layers.

SAMI treatments are designed to be overlaid with asphalt very shortly after construction.

Highly modified binders, sprayed at high rates of application.

1.  Brooming the existing surface,

2.  Spraying modified binder,

3.  Spreading / Covering with aggregate,

4.  Rolling aggregate for embedment,

5.  Brooming / Removing the excess aggregate.

GEOTEXTILE REINFORCED SEAL (GRS)

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Treatment used to improve seal performance as a waterproofing membrane over cracked or weak pavements, or as an asphalt interlayer.

Hot Bitumen

and Fibre rolls

1.  Brooming the existing surface,

2.  Spraying the binder,

3.  Covering with fibre roll,

4.  Rolling,

5.  Spraying the binder,

6.  Covering with aggregates,

7.  Rolling,

8.  Removing the excess of stone.

TACK COAT

(TC)

Application of a binder as a thin film to improve the adhesion between layers of asphalt.

- Emulsion

- Hot Bitumen

1.  Brooming the existing surface,

2.  Spraying binder.