| Title |
An Evaluation of Resistances in Porous Asphalt Concrete Mixtures due to Repeated Cyclic Freeze-Thawing |
| Authors |
조신행(Jo, Shin Haeng) ; 김낙석(Kim, Nakseok) |
| DOI |
https://doi.org/10.12652/Ksce.2012.32.1D.033 |
| Keywords |
반복 동결융해;배수성 아스팔트콘크리트;박리 저항성;배수;변형 cyclic freeze-thawing;porous asphalt concrete;stripping resistance;drainage;deformation |
| Abstract |
More and more pavements are suffering from damage these days due to the below-zero winter temperatures and frequent snowfalls. From this research, the freeze-thawing mechanisms of pavements will be observed, and the freeze-thawing resistance of porous asphalt concrete mixture is to be evaluated according to various assessment methods. The investigation was conducted through applying rigid and flexible pavements to freeze-thawing resistance experiments, which include various experiments such as deformation rate measurements, Lottman tests, repeated cyclic freeze-thawing experiments, stripping resistance tests and so on. Test results revealed that the porous asphalt concrete had less deformations according to temperatures compared to dense-graded asphalt concrete due to the 20% void gap. In addition, according to the freeze-thawing repetition experiments which are effected by moisture, the porous asphalt concrete mixture showed superior resistance to repeated cyclic freeze-thawing compared to other asphalt concrete mixtures due to the drainage and the voids within the specimen. |