roadsurfacing

Road resurfacing involves applying a new surface layer to an existing road to restore structural support, improve ride quality, and extend life. It is a common pavement preservation technique used instead of full reconstruction when the base remains sound.

Common materials are asphalt concrete (hot-mix asphalt) and Portland cement concrete. Surface treatments such as seal coats, micro-surfacing, slurry seals, and chip seals are used for maintenance or low-traffic roads. Recycling methods like cold in-place recycling or full-depth reclamation reuse existing materials.

The process generally follows condition assessment and drainage checks, surface preparation (crack sealing, pothole repair), and removal of damaged surface as needed. Asphalt overlays are placed in lifts and compacted; concrete overlays are placed with joints, dowels, and proper finishing.

Maintenance planning aims to minimize disruptions and maximize performance. Regular crack sealing, pothole repair, and timely resurfacing maintain ride quality and prevent deterioration. Overlay thickness and construction quality influence durability.

Environmental aspects include recycling of asphalt pavement, use of warm-mix technologies to reduce emissions, and considerations of noise and energy use in materials and construction.

Standards and design criteria are set by transportation agencies, addressing traffic loading, climate, drainage, and safety. Performance metrics include ride quality, surface evenness, and skid resistance.