What is it?
Colbond 50 is nominally a 50% binder content polymer modified bitumen emulsion. Colbond 50 forms a uniform film of polymer modified bitumen on the road surface which promotes a strong adhesive bond between a bituminous overlay and the existing surface. The application of Colbond 50 also improves the waterproofing of the road pavement.
Colbond 50 has been designed specifically for thin and ultra-thin overlays. Colbond 50, when fully broken, prevents 'pick-up' on the wheels, tracks or tyres of the paver/delivery vehicles and prevents disbonding of the overlay during subsequent service life when subjected to traffic stresses.
Protect from frost. Drums should be rolled frequently to avoid separation. For further information please refer to BS434: Part 2: 2006 Section 5; Clause 5.2. 'Storage'.