Why is post-tensioned concrete superior to asphalt for permanent outdoor courts?

In northern and temperate climates, asphalt courts suffer severe longitudinal freeze-thaw cracking and edge settling within 4 to 7 years. Post-tensioned concrete (PTC) is engineered with high-strength plastic-sheathed steel cables placed in a grid inside a 4- to 5-inch concrete slab. Once the concrete cures, hydraulic jacks tension the cables to 33,000 pounds of force, placing the entire slab into permanent compression. This compressive strength neutralizes tensile stresses caused by temperature swings, soil shifting, and tree roots. While PTC carries a 20-30% higher upfront capital expense, it prevents reflective structural cracking, ensuring seamless acrylic surfacing for 25 to 30 years.