Modification of Full Asphalt Content Asphalt Concrete Design Method

Zhe-Sheng Ge ； Xiao-Ning Zhang

《International Journal of Pavement Research and Technology》 3卷3期 (2010/05) Pp. 156-159

https://doi.org/10.6135/ijprt.org.tw/2010.3(3).156

並列摘要

This technical note presents the research work that investigated the issues of the current full asphalt content (FAC) asphalt concrete design method. These issues include the discrepancy between the actually measured volume of air voids and the targeted or designed one in FAC mixtures, the lack of good control on voids in mineral aggregate (YMA) in FAC mixtures, and no consideration on the asphalt absorbed by aggregates in a mixture design. The causes of these problems are discussed and possible improvements are suggested through mixtures volume-balance-equation analysis and modification. The suggested improvement is validated through laboratory tests that include Marshall testing, soggy Marshall testing, freezing-melting testing, and rut testing. The results indicate that the properties of designed FAC asphalt concrete satisfy the Chinese National technical specifications for construction of highway asphalt pavement. Consequently, the improved method can be recommendable to design close-discontinuous gradation asphalt mixtures such as FAC, stone mastic asphalt (SMA), and open-graded friction courses (OGFC) mixtures.

並列關鍵字

Asphalt cement ； Designing method ； Full asphalt content asphalt concrete ； Pavement engineering