Villagers in the Mexican state of Veracruz discovered the tablet sometime before 1999, while quarrying an ancient Olmec mound for road-building material.
UINTAITE Mastic Asphalt is an excellent natural bituminous material, which can improve the performance of asphalt pavement when mixed with conventional asphalt mixture.
The overlay of asphalt concrete on the cement concrete road is a special pavement construction, and the stress-diversification has biggish difference from normally flexibility samdwich system.
Therefore, lots of pavements need to repair in large-scale even repave wholly after using a long time, which will bring large numbers of waste asphalt mixture.
To make use of the model test method to study automobile rideability, the random excitation signal spectrum which is similar to that of typic-al roughness of road is needed.