This session highlights the key differences between HRA and SMA surfacing materials including: the composition and mix properties, performance characteristics (technical and environmental), practicality and issues with chipped HRA, and case studies.

01:17 HRA vs SMA
04:07 Resistance to Deformation
05:26 Resistance to Cracking
07:30 Noise
11:01 Waterspray
11:53 Practicalities with Chipped HRA
16:02 Case Study

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