Page 178 - 인천국제공항 4단계 건설사업 건설지 [화보집 영문]

Meeting durability and ride quality requirements: paving work The wide-width paving method was particularly noteworthy. This technique
Runway 4 was constructed with dimensions of 3,750 meters in length and involved paving a 24-meter-wide section of the runway’s central area in one
60 meters in width, equipped with parallel taxiways, rapid exit taxiways, and continuous operation without construction joints, making it the widest paving
navigational aids. While Runway 3 was designed at 4,000 meters, considering method ever used at a domestic airport. This reduced the risk of runway damage
future development of ultra-large aircraft and global warming at the time of and improved ride quality. The surface was also grooved using a trapezoidal

planning. However, Runway 4 was constructed at 3,750 meters, reflecting rapidly grooving method, which provides better friction, drainage, durability, and cost-
evolving trends in aircraft development and operations. efficiency compared to traditional right-angle grooving. To implement this
The foundation for Runway 4 was created by filling the site with approximately technique, custom cutting blades and construction methods were developed, and a
7 million cubic meters of soil, followed by full-scale construction. The pavement relevant patent was registered in August 2020.

was made 90 cm thick—about 3 times thicker than typical roads—to withstand The paving materials were also tailored based on the location in consideration of
the weight of large aircraft. To ensure both economic efficiency and improved impact and load distribution on the ground. For Runway 4, the optimal balance
durability and performance, the project applied advanced techniques and materials, between rigid and flexible pavement was achieved by analyzing aircraft landing
such as wide-width paving, trapezoidal grooving, and durability-enhanced cement data, thanks to the expertise accumulated through long-term airport operations.

mixes. Additionally, smart construction equipment, including the International Additionally, durability-enhanced cement mixes were used for rigid pavement
Roughness Index (IRI), Big Multiplex Ski, and Pavement Quality Indicators sections, significantly extending the lifespan of the pavement.
(PQIs), was utilized throughout the process.

176 The 30-year History of Incheon Airport Construction 177