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Stress, as the force per unit area, is a key parameter to describe the stress state of a material. Strain, on the other hand, describes the degree of deformation of a material under stress.

In order to explore the anti-freezing performance of elastic asphalt mixture containing waste rubber, a running test machine for measuring the wear resistance of surface asphalt mixture was used for research. The relevant conditions are as follows:

The Concrete Abrasion Tester measures the relative resistance of concrete surface to wear by underwater high-speed flow medium, and is used to evaluate the relative wear resistance of concrete surface. This instrument complies with the standards of the water conservancy industry.

In view of the problem of interlayer displacement of asphalt pavement, a pavement material shear (variable angle shear) instrument was designed and developed for interlayer shear strength testing.

Test purpose This method specifies the method of making asphalt mixture samples by standard compaction method or large compaction method, so as to be used by the laboratory to test the physical and mechanical properties of asphalt mixture. According to the mechanical indicators (stability and fl...

Test preparation First, place the instrument on a flat and stable ground to ensure that the instrument will not shake or move during operation. Check whether the various components of the instrument are normal, including the vibration motor, control system, pressure head, etc., to ensure that...

Soil dynamic triaxial compression instrument: It is an instrument used for geotechnical testing. It is mainly used to study the mechanical properties of soil under dynamic loads, such as dynamic strength, dynamic deformation characteristics, etc., and analyze the response of soil under dynamic ac...

Asphalt concrete engineering, especially asphalt mixture pavement engineering of highway pavement. Due to repeated cyclic loads such as frequent vehicle rolling, speed changes, water level rise and fall, earthquakes, etc., the working performance of asphalt concrete is reduced, so it is necessary...

The unsaturated soil triaxial creep tester is an extension of the traditional triaxial tester. It is mainly used to study the characteristics of soil layers above the groundwater level. It can simulate the on-site stress state and the physical properties of unsaturated soil layers.The instrument ...

Rutting is a major form of damage to asphalt pavement, which not only affects the smoothness and performance of the road surface, but also seriously endangers driving safety. Due to the fact that the treatment method for ruts is generally milling and repaving, the maintenance cost is much higher ...

Marshall tester for asphalt mixture: products that meet the technical requirements of the standard "Marshall tester for asphalt mixture" (GB/T11823). For asphalt mixtures used in highways and first-class highways, automatic Marshall testers should be used. Computers or X-Y recorders should be use...

Background As of 2019, the total length of highways in China has reached 4.8465 million kilometers, with 142600 kilometers of expressways, ranking first in the world. At the same time as the rapid construction of highways in China, it has also entered a continuous period of large-scale maintena...