County Road Old Road Renovation & Anti-Crack Reinforcement
County Road Old Road Renovation & Anti-Crack Reinforcement
1. Project Overview
National county road renovation project, original asphalt pavement with a large number of bottom cracks, easy to form reflection cracks after overlay; local roadbed soil is damp clay, water damage is serious.
2. Geotextile Application Details
Material: 300g/m² staple fiber subgrade reinforcing geotextile
Laying position: Between old road base and new asphalt overlay
Construction: Clean up old pavement cracks first, lay geotextile flat, apply asphalt tack coat for full bonding
3. Core Functions Played
Stress buffer: Block base cracks from reflecting to new pavement surface
Subgrade reinforcement: Enhance overall structural toughness of old road
Drainage: Remove water stored in old road base to reduce water damage
4. Acceptance & Operation Effect
Pavement crack rate reduced by over 45% after overlay construction
Road maintenance cycle extended from 2 years to 5 years, lower later maintenance investment
