The low elongation of Huyang fiberglass geogrids helps reduce pavement deflection.
Release date:
2020-09-21
Huyang Hengyang fiberglass geogrids' low elongation reduces pavement deflection, ensuring the road surface avoids excessive deformation.
The primary function of an asphalt overlay on an existing cement concrete pavement is to enhance the road's serviceability, while its contribution to load-bearing capacity remains minimal. The rigid concrete pavement beneath the overlay continues to play a critical role in supporting the vehicle loads.
However, asphalt overlay on existing asphalt concrete pavements is different—here, the new asphalt layer works together with the old pavement to carry the load. As a result, in addition to reflective cracking, asphalt overlays on asphalt concrete surfaces can also lead to fatigue cracking over time due to prolonged loading conditions.
We conducted a stress analysis on the asphalt overlay applied over the existing asphalt concrete pavement: Since the layer beneath the asphalt surface is a flexible layer with the same properties as the surface itself, the pavement surface will experience deflection when subjected to load.
When the asphalt pavement layer directly in contact with the wheel is subjected to compression, while areas outside the wheel load edge experience tensile forces, the differing nature of these stress zones—yet their close proximity—creates a high risk of failure at the sharp transition point where the two regions meet. Over time under sustained loading, this leads to fatigue cracking.
In the asphalt overlay layer, it effectively distributes the aforementioned compressive and tensile stresses, creating a buffer zone between the two loaded areas where stress transitions gradually rather than abruptly—thus minimizing damage to the asphalt overlay caused by sudden stress changes. At the same time Huyang Hengyang Fiberglass Geogrid Its low elongation reduces the pavement deflection, ensuring that the road surface does not undergo excessive deformation.

Huyang Hengyang Fiberglass Geogrid High-Temperature Rutting Resistance:
Asphalt concrete exhibits rheological behavior at high temperatures, which is particularly evident in summer when asphalt road surfaces become soft and sticky. Under vehicle loads, the stressed areas of the pavement sink slightly, and once the load is removed, the asphalt surface fails to fully return to its original state—resulting in permanent plastic deformation. Over time, repeated rolling by vehicles causes this plastic deformation to accumulate continuously, ultimately leading to the formation of wheel tracks. After analyzing the structure of asphalt pavement layers, we can conclude that, due to the rheological properties of asphalt concrete at elevated temperatures and the lack of any mechanism within the pavement to restrain the movement of aggregates under load, the asphalt surface tends to shift laterally. This lateral displacement is the primary cause of wheel-track development.
Used in asphalt pavement layers Huyang Hengyang Fiberglass Geogrid , which plays a crucial skeletal role within the asphalt pavement layer. In asphalt concrete, the aggregate is embedded throughout the grid structure, creating a composite mechanical interlocking system that effectively restrains aggregate movement. This enhances the lateral confinement within the asphalt surface layer, allowing all components of the pavement to mutually reinforce each other and prevent lateral displacement. As a result, the material effectively resists rutting under traffic loads.
ZHONGTAI HENGBANG Engineering Technology Co., Ltd. is a comprehensive service provider integrating engineering consulting and design, material R&D and manufacturing, as well as operations and maintenance. With robust technical expertise and strong R&D capabilities, our products are prominently applied in environmental protection fields such as hydraulic infrastructure projects, transportation infrastructure initiatives, and the isolation and anti-seepage solutions for urban waste and hazardous industrial solid waste management. The company boasts advanced production lines sourced from Germany, Italy, Denmark, Belgium, Switzerland, and other countries, adhering to stringent quality management systems and rigorous testing standards. We are equipped with state-of-the-art equipment capable of evaluating critical properties—including tensile strength, creep resistance, UV resistance, water permeability, flame retardancy, antistatic performance, chemical corrosion resistance, and oxidation stability—ensuring superior product quality. Furthermore, our enterprise has successfully obtained certifications such as CRCC, ISO 9001, ISO 14001, OHSAS 18000, and MA approval. We also hold inspection reports from China’s Ministry of Railways and Ministry of Water Resources, along with the prestigious EU CE certification, as well as approvals from specialized laboratories in Russia, Australia, and the United States. Committed to delivering top-tier geosynthetic materials and unparalleled service, we proudly support key projects such as reinforced soil retaining walls, soft ground stabilization, land reclamation cofferdams and their maintenance, hydraulic engineering works, slope remediation and ecological restoration, road construction, and mining projects.
Consultation Phone: 13953856388
Contact: Mr. Zhang
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