Asphalt Road Reconstruction

Low temperatures, seasonal freeze-thaw cycle, moisture penetration and traffic fatigue are all factors that affect the life cycle of roads. Asphalt is a durable and economical material for road construction, but without  reinforcement cracks form within the base layers of the road and reflect up into the top layers requiring more frequent repairs and driving up maintenance costs to maintain proper road conditions.

When overlays are done with flexible pavement over concrete the transverse joints of the existing concrete should be reinforced to slow reflective cracking. The existing concrete overlay at this location wasn't performing well. The road had significant path fatigue cracking, indicative of deficient pavement structure, and needed rehabilitation. 

The typical solution to this problem would be to repair the road by milling and applying a new inlay and overlay however, this does nothing to enhance pavement performance or longevity. 

Titan Solution

Spartan Road Grid™  fiberglass composite geogrid was identified as the value-added solution to address the city's desire to maximize pavement performance, extend its life cycle and save on maintenance costs. This geogrid was placed between the asphalt base
and top layer to reinforce the overlay/inlay and increase the strength and stiffness of the asphalt. The tack-coat was applied and allowed to fully cure before paving to develop adequate bonding between the Spartan Road Grid™  and the compacted asphalt overly that was placed over top the Spartan Road Grid™.

Spartan Road Grid™ is a fiberglass composite geogrid bonded to a nonwoven geotextile, specifically engineered for asphalt reinforcement, offering enhanced tensile strength, moisture resistance, and long-term pavement durability.

Achievement

Reduced overlay thickness (40-50mm) helped speed up construction and decrease project costs. Additionally results also include rutting prevention; decreased fatigue cracking; extended inlay life due to minimized and retarded reflective
cracking; increased pavement fatigue life; and reduced pavement water infiltration which
otherwise weakens the road base and sub-grade.