CHIP SEALS

CHIP SEALS

Surface dressings consist of application of binder course followed by spread of crushed aggregate in single or multiple layers.

Asphalt Emulsions are spread on the road by the use of an asphalt distributor. Following the emulsion application crushed aggregate is uniformly spread and rolled rapidly. Surface dressings may be applied in single or multiple layers (2 or 3). These layers can be applied on granular base or on existed paved surface.

Surface dressings have various types and construction techniques. When multiple layers are used the following advantages shall be obtained:

. The binder, when applied in multiple layers, this will create a better adhesion in between the aggregates and thus will benefit to a much better quality pavement. 
. The layers on upper coarse shall get smaller and that will help to close the voids and will create a much fine finish that will be appreciated in driving comfort. 
. There shall be a more even residue set in the pavement that will benefit a better resistance and durability.