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About UsZHONGTAI HENGBANG Engineering Technology Co., Ltd. is located in the Academician Entrepreneurship Base of Tai'an National High-Tech Industrial Development Zone, Shandong Province. The company is a comprehensive service provider specializing in engineering consulting and design, materials R&D and manufacturing, as well as operations and maintenance. With strong technical expertise and robust R&D capabilities, its products are primarily applied in critical areas such as water conservancy infrastructure projects, transportation infrastructure initiatives, and environmental protection solutions for isolating and preventing leakage from urban waste and highly hazardous industrial solid waste.
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ProductsZHONGTAI HENGBANG Engineering Technology Co., Ltd. boasts production lines sourced from countries including Germany, Italy, Denmark, Belgium, and Switzerland, adhering to rigorous quality management systems and testing standards. We are equipped with advanced testing equipment capable of evaluating tensile strength, creep resistance, UV protection, water permeability, flame retardancy, antistatic properties, chemical corrosion resistance, and oxidation performance.
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Application CasesThe product is primarily used in hydraulic infrastructure projects, transportation infrastructure projects, and environmental protection applications—including the isolation and impermeability of municipal waste and highly hazardous industrial solid waste.
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BlogPrioritizing technological advancement and innovation, our company is committed to fulfilling user needs to the fullest extent possible.
Key Construction Points for Bi-directional Plastic Geogrids in Chongqing
Release date:
2020-12-31
Chongqing Yuzhong District Bidirectional Plastic Geogrid Its appearance resembles a nearly square network structure, made primarily from polypropylene. This high-strength geosynthetic material is produced through extrusion, followed by longitudinal and transverse stretching. The material exhibits exceptional tensile strength in both the longitudinal and transverse directions, making it widely used for reinforcing soft ground foundations.
Chongqing Yuzhong District Bidirectional Plastic Geogrid The main applications of the product are: Chongqing Yuzhong District Bidirectional Plastic Geogrid Suitable for reinforcing various types of embankments and roadbeds, protecting slopes, strengthening tunnel linings, and providing durable foundation support for large-scale infrastructure such as major airports, parking lots, and port cargo terminals.
Today, ZHONGTAI HENGBANG will explain it for everyone. Chongqing Yuzhong District Bidirectional Plastic Geogrid What are the key points for construction?
(1) First, accurately mark the embankment slope lines. To ensure the required embankment width, add an extra 0.5 meters on each side. After leveling the dried-out subgrade soil, compact it twice using a 25-ton vibratory roller in static mode, followed by four passes of compaction with a 50-ton vibratory roller. Any uneven areas should be manually leveled to achieve a smooth surface.
(2) Lay a 0.3-meter-thick layer of medium (or coarse) sand, then manually and mechanically level it thoroughly. Afterward, compact the surface twice using a 25-ton vibratory roller in static mode.
(3) Lay the geogrids, ensuring that the bottom surface remains smooth and compact during installation. Generally, the geogrids should be spread out flat, pulled taut, and laid without overlapping, curling, or twisting. The adjacent sheets must be lapped by 0.2 meters, with #8 wire threaded through every 1 meter along the transverse direction of the subgrade at the overlap points. Additionally, secure each laid geogrid to the ground at intervals of 1.5 to 2 meters using U-shaped nails.
(4) After the first layer of geogrid is laid, proceed to backfill with a 0.2-meter-thick layer of medium (coarse) sand. The method is as follows: Transport the sand to the site by truck and dump it on one side of the subgrade. Then, use a bulldozer to push the material forward. First, compact the area within 2 meters on both sides of the subgrade to a depth of 0.1 meter. Next, fold up the edges of the previously laid geogrid and continue backfilling with another 0.1 meter of medium (coarse) sand. **Important Notes:** - Avoid filling or pushing the sand inward from the sides toward the center. - Prohibit any machinery from operating directly on the geogrid before it’s fully covered with medium (coarse) sand. This approach ensures the geogrid remains flat, preventing bulging or wrinkling. Once the second layer of medium (coarse) sand is evenly spread and leveled, perform a precise horizontal survey to confirm uniformity in the fill thickness. Finally, once the leveling is verified, roll the surface twice using a 25-ton vibratory roller in static mode to achieve optimal compaction.
(5) The construction method for the second layer of geogrid is identical to that of the first layer. Finally, backfill 0.3 meters of medium (or coarse) sand using the same method as the first layer. After two passes of static compaction with a 25-ton roller, the subgrade reinforcement at the base will be fully completed.
(6) After the coarse sand has been properly compacted in the third layer, lay two layers of geogrids along the longitudinal direction of the slope, one on each side. Ensure an overlap of 0.16 meters and securely join them using the same method. Then, proceed with earthwork operations by installing the geogrids for slope protection. Importantly, measure the exact placement lines for each layer, ensuring that after final slope trimming, the geogrids are embedded at least 0.10 meters into the slope on both sides.
(7) For each two layers of soil compacted—equivalent to a thickness of 0.8 meters—a layer of geogrid must be simultaneously placed on both sides of the slope. This process is repeated until the geogrid reaches just below the shoulder surface.
(8) After the subgrade filling is completed, promptly carry out slope trimming and install dry-stacked stone protection at the toe of the slope. In addition to widening each side by 0.3 meters, this section of subgrade also includes a reserved settlement allowance of 1.5 percent.
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 specifically tailored for critical applications in areas such as hydraulic infrastructure projects, transportation infrastructure initiatives, and environmental protection fields like urban waste management and the safe containment of hazardous industrial solid waste. 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 key performance metrics, including tensile strength, creep resistance, UV durability, water permeability, flame retardancy, anti-static properties, chemical corrosion resistance, and oxidation stability. Furthermore, our enterprise has successfully obtained certifications such as CRCC, ISO 9001, ISO 14001, OHSAS 18000, and MA approvals, along with favorable test reports from China’s Ministry of Railways and Ministry of Water Resources, the EU CE certification, and additional industry-specific lab tests conducted in Russia, Australia, the U.S., and other regions. We are dedicated to delivering top-quality geosynthetic materials and unparalleled services for projects spanning a wide range of sectors, including reinforced earth retaining walls, soft ground stabilization, land reclamation and embankment construction/maintenance, hydraulic engineering, slope remediation and ecological restoration, road construction, and mining projects.
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ZHONGTAI HENGBANG Technology Co., Ltd.
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