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Adhesion promoters

creating a bond for the future

In developed countries, road maintenance or reconstruction and rehabilitation represent the main road paving activities. In developing countries the focus is more on construction of road networks. In both cases, the durability and life expectancy of the asphalt pavement is of prime importance.

The fact that roads and highways are susceptible to water damage is well known. The symptoms of water damage include rutting and shoving, loss of chippings from surface dressings (chip seals), bleeding, washing out of fines and raveling of surface layers leading to
potholes. This type of deterioration is accelerated when the pavement undergoes freeze-thaw cycles. But the underlying problem on a molecular scale is loss of adhesion between the binder and the aggregate in the presence of water. This is often referred to as stripping.
Wetfix®, Redicote®, Kling Beta® and PermaTac® adhesion promoters create a strong chemical bond between bitumen and aggregate and these bonds are resistant to the action of water which extends the durability of the pavement. The dosage level of adhesion promoters in asphalt pavement is very low. The additional cost of adding Wetfix®, Redicote®, Kling Beta®, Magnabond™ and PermaTac® is small compared to the total cost of constructing the pavement and the extended service life of the asphalt pavement provides big savings in the long run.

Wetfix®, Redicote®, Kling Beta®, Magnabond™ and PermaTac® products protect asphalt pavements from moisture damage especially when exposed to frequent rain and freeze thaw cycles, thereby lowering maintenance costs. In several countries, due to extensive testing, trialing and experience, it is mandatory to add adhesion promoters to asphalt mixes.