The importance of an asphalt binder testerIn the 1980s, the asphalt binder tester industry began to focus on the growing demand for a better understanding of the rheological properties of asphalt binders. Prior to this, basic flow characteristics were mainly measured by viscosity tests. For traditio

Kinematic viscometers can play a huge role in measuring the viscosity of various liquids, so how is it different from other types of viscometers? Is there a disadvantage to the kinematic viscometer? How to use a kinematic viscosity meter to avoid errors and accidents?

The result of road surface profiler is almost continuous data. The road surface profiler generates far more data than the normal rut bar with 3, 5, or even 10 sensors. The road surface profiler can generate indicator statistics for an operator defined interval. The economic practicability of this technology is more reflected in the data obtained can be used to calculate Ride comfort indicators.

Chocolate pudding, synthetic rubber, toothpaste and asphalt… At first glance, these items seem to be randomly selected. Although it may not be obvious, these products have a common, basic characteristic-their rheology, or flow and deformation, can be measured with one instrument.

Since the evaluation indicators and standards specified in the current specification are based on the beckman beam test, the data measured by the falling weight deflectometer must be converted into beckman beam data through comparison test before strength evaluation can be carried out. However, the transformation relationship obtained by this simple regression analysis lost a lot of information of the measured data (especially dynamic information), and did not give play to the advantage of the measured sinker data form to evaluate the bearing capacity of the pavement structure.

With the development of road traffic infrastructure construction, more and more attention has been paid to the quality of road construction. Falling Weight Deflectometer has also become an important tool that is increasingly being valued by civil engineers. The falling weight deflectometer is one of the most advanced non-destructive testing equipment for pavement strength in the world. The working principle is as follows: the falling weight deflectometer measures the dynamic deflection of the road surface and inversely calculates the rebound modulus of the road surface. It has become a hot topic in the highway industry around the world.