[Nacho]

What performance advantages does SBS elastomer modification provide in bitumen emulsions?

[John]

SBS modification improves elasticity, tensile recovery, and crack bridging of the cured residue, which is valuable in waterproofing and stress accommodating road layers. It can increase resistance to rutting or flow at higher temperatures while maintaining flexibility at lower temperatures. The result is often better durability under thermal cycling and minor substrate movement. The limitations are higher viscosity, greater sensitivity to mixing and storage conditions, and stricter temperature control during manufacturing and application. Buyers should request residue level tests demonstrating elastic recovery and aging resistance, not just a statement that SBS is present.

[Author]

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