Road American
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Polymer modification increases elastic recovery and flexibility of the cured residue, improving crack bridging and resistance to thermal cycling. It can enhance adhesion and cohesion so the film resists raveling, scuffing, and water intrusion, especially in sealcoats and waterproofing systems. The improvement depends on polymer type, dosage, and compatibility with base asphalt and emulsifier. Trade offs include higher viscosity, tighter temperature control during production and spraying, and increased risk of nozzle clogging if filtration and agitation are not designed for modified systems.
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