多孔隙瀝青混凝土長期績效與生命週期成本分析

LONG-TERM PERFORMANCE AND LIFE CYCLE COST ANALYSIS OF POROUS ASPHALT CONCRETE

陳建旭(Jian-Shiuh Chen) ； 王大榮(Ta-Jung Wang)

《中國土木水利工程學刊》 34卷8期 (2022/12) Pp. 663-670

https://doi.org/10.6652/JoCICHE.202212_34(8).0001

摘要

台灣於1990年代末期開始引進使用多孔隙瀝青混凝土（Porous Asphalt Concrete, PAC），惟因缺乏長期之鋪面績效及生命週期成本評估，PAC鋪面之量化效益了解仍有限。本研究評估國道6號之多孔隙瀝青混凝土之鋪面績效，並與鄰近國道3號之開放級配摩擦層（Open-Graded Friction Course, OGFC）進行生命週期成本分析，國道6號於民國98年全線通車，至今使用已超過13年，結果顯示PAC之車轍值低於10mm，說明其抗永久變形能力良好；在使用期間，PAC提供較佳之鋪面績效包含功能性、耐久性及安全性，服務社會大眾。與OGFC相比，PAC在機關成本及用路人成本現值皆有較低之生命週期成本，可節省約14%機關成本及86%用路人成本，較具經濟效益。

關鍵字

多孔隙瀝青混凝土 ； 開放級配摩擦層 ； 長期鋪面績效 ； 生命週期成本

並列摘要

Porous asphalt concrete (PAC) has been implemented in Taiwan since late 1990s; however, lack of long-term pavement performance as well as life-cycle cost analysis resulted in a limited understanding about the quantified benefits of PAC. A full-scale PAC pavement on the National Freeway #6 that started in January 2009 was evaluated, as compared with an open-graded friction course (OGFC) on the National Freeway #3 that is adjacent to #6. Test results indicate that rut depth is less than 10 mm after 13 years in service, and shows the good resistance of PAC mixtures to permanent deformation. It has been clearly demonstrated that PAC pavement surfaces provide excellent performance including functionality, durability and safety for the public. The life-cycle cost analysis supports the use of PAC instead of OGFC. In comparison, PAC is shown to be relatively cost-effective with approximately 14% and 86% saving for the agency and the road user, respectively.

並列關鍵字

porous asphalt concrete (PAC) ； open-graded friction course (OGFC) ； long-term pavement performance ； life-cycle cost analysis

參考文獻

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