Permeability of hot mix asphalt (HMA) is an important property that influences asphalt’s resistance to moisture damage. All current methods used by pavement engineers rely on measuring vertical permeability. However, it has been shown recently that the horizontal permeability can be much higher than the vertical one due to the anisotropic and heterogeneous nature of air void distribution. Labor...

The thermodynamic behavior of asphalt mixtures is critical to the engineers since it directly relates to the damage in asphalt mixtures. However, most of the current research of the freeze-thaw damage of asphalt mixtures is focused on the bulk body from the macroscale and lacks a fundamental understanding of the thermodynamic behaviors of asphalt mixtures from the microscale perspective. In thi...

knowledge of the warming or cooling effects induced by asphalt or grass covered areas, may improve our understanding of how thermal stress or thermal comfort is created for workers who have to work outdoors for long hours in warm seasons. for this purpose a field measurements were carried out to know the cooling and warming effects of two adjacent areas, one covered with grass and the other wit...

A car-borne survey was carried out in the northwestern, or Tokatsu, area of Chiba Prefecture, Japan, to make a detailed distribution map of absorbed dose rate in air four years after the Fukushima Daiichi Nuclear Power Plant accident. This area was chosen because it was the most heavily radionuclide contaminated part of Chiba Prefecture and it neighbors metropolitan Tokyo. Measurements were per...

To evaluate the condition of asphalt pavement road, two GPR systems with different frequency band were mounted in the trailer type vehicle. The GPR system with higher frequency band was used to measure the thickness of the asphalt layers and the other system with lower frequency band was used to detect the air cavity located beneath the asphalt pavement.

In this thesis, nondestructive surface wave measurements are presented for characterization of dynamic modulus and layer thickness on different pavements and cement concrete slabs. Air-coupled microphones enable rapid data acquisition without physical contact with the pavement surface. Quality control of asphalt concrete pavements is crucial to verify the specified properties and to prevent pre...

Ravelling atau butiran lepas adalah salah satu jenis kerusakan jalan berupa disintegrasi permukaan perkerasan aspal yang disebabkan pelepasan partikel agregrat berkelanjutan, berawal dari menuju ke bawah pinggir dalam. dapat terjadi karena beberapa faktor, diantaranya kadar dan air void. Penelitian ini bertujuan untuk mengetahui pengaruh void sebanyak 2%, 4%, 7% 4,5%, 5,5%, 6,5% terhadap ravell...

Technology in transportation used available resources to make it safe, fast, suitable, easy, economic, and environmental transport people goods. Olive Husk became an problem as waste materials especially the Middle East where huge quantities are found. The objective of this research is investigate effect addition Ash (OHA) on properties asphalt concrete mixtures. Marshall Test was perform mixtu...