台灣處於亞熱帶地區，四面環海且潮濕多雨，常在颱風季節及梅雨季節發生強降雨，而在瞬間暴雨後容易在表面形成徑流，使得鋪面生成水膜，使車輛容易打滑而影響行車安全，而且車輛高速通行產生之音量，影響住戶生活品質，多孔隙瀝青混凝土(Porous Asphalt Concrete, PAC)因透水性佳，逐漸受到重視。本研究評估PAC之安全性(Safety)、功能性(Functionality)及耐久性(Durability)等鋪面成效，並以透水量、平坦度、噪音量、車轍量、抗滑度、CIV值等現地試驗量測其通車後之現地實際狀況。PAC仰賴方正粗粒料及適當瀝青用量提供耐久性，且具約20%孔隙率來提升透水功能及降低噪音功能，另粒料破裂面有助於鋪面承載力；民國98年通車迄今之國道6號下坡路段鋪面孔隙存有堵塞現象，另外民國102年開始服務之國道8號PAC透水率慢慢下降；PAC之平坦度、車轍等耐久性表現良好，抗滑度提供摩擦力，增加行車安全，總體而言，多孔隙瀝青混凝土排水佳、低噪音、抗車轍、抗滑度等特性，皆達水準以上表現，評估結果可提供道路主管機關於路面整修、養護管理、維護作業之參考依據。

Taiwan is located in a subtropical area, surrounded by the sea and wet and rainy. Heavy rainfall often occurs in typhoon season and rainy season. Runoff is likely to form on the surface after a momentary rainstorm, causing a water film on the pavement, making it easy for vehicles to slip and affecting driving safety. The volume generated by high-speed traffic affects the quality of life of residents. Porous Asphalt Concrete (PAC) has gradually attracted attention due to its good water permeability. This research evaluates the effectiveness of PAC's safety, functionality, and durability, and uses field tests such as water permeability, flatness, noise, rutting, anti-skid, and CIV values. Measure the actual situation on the spot after it is opened to traffic. PAC relies on Fangzheng coarse-grained material and appropriate asphalt dosage to provide durability, and has a porosity of about 20% to improve water permeability and reduce noise. In addition, the cracked surface of the pellets contributes to the bearing capacity of the pavement; National Highway No. 6 since the opening of the Republic of China in 1998 Pavement pores on downhill roads are blocked. In addition, the water permeability of PAC on National Highway No. 8 that has been in service since the Republic of China in 102 has gradually decreased; In other words, the characteristics of porous asphalt concrete, such as good drainage, low noise, anti-rutting, and anti-sliding, are all above the standard performance. The evaluation results can provide a reference basis for road maintenance, maintenance management, and maintenance operations by road supervisors.

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