Road surface layer detection scheme
Related plans：
Highway inspection
In recent years, with the continuous increase in the scale of highway construction in China, the related quality inspection tasks have become increasingly heavy. However, the damage to the pavement structure of highways often begins with various hidden or invisible hidden dangers. Traditional methods for detecting these hidden dangers cannot accurately and timely detect and judge the specific situation of the hidden dangers. This results in poor targeting and blindness in the maintenance of road and bridge structures, while the real problems remain unresolved. In the late 1980s, ground penetrating radar technology was applied to the detection field of highway engineering, opening up a new avenue for solving such problems.
Ground Penetrating Radar (GPR), also known as subsurface radar or ground probing radar, is a detection method that uses high-frequency radio waves (frequencies generally between 1MHz and 10GHz) to determine the distribution of underground or rock mass media. Ground penetrating radar uses a transmitting antenna to transmit high-frequency electromagnetic waves into the underground or rock mass, and receives the electromagnetic waves reflected back to the ground through a receiving antenna. When electromagnetic waves propagate in the medium, they are reflected when they encounter interfaces with different electrical properties. Based on the characteristics of the received electromagnetic wave waveform, amplitude strength, and time changes, the spatial position, structure, morphology, and burial depth of the medium are inferred.
In this case, we conducted on-site detection on the road surface beside a street in Wuhan City, using a Bodiang Technology 800MHz+1600MHz stepped radar for detection.
On-site Photos
Street 1 (800MHz+1600MHz)
Street 2 (1600MHz)
The results show that: The first layer is the asphalt pavement layer, with a uniform thickness of about 10cm; the second layer is the cement stabilized layer, with a thickness of about 20cm; the reflection of the third layer is relatively weak, which is related to the medium conditions. Repeated tests can show more obvious reflection signals, the thickness is uneven, and it is speculated that this is due to the compaction of the base, with a thickness of about 15cm; the test results are consistent with the urban asphalt pavement structural design.
Related plans
undefined
Focusing on creating value for customers and the industry
Contact Us
Manager Yang：18942904640
Mail：1310182090@qq.com
Address: No. 2, 22nd Floor, Yunhe Building, Yuemachang, Wuchang District, Wuhan, Hubei Province