Application of Convex-Point Steel-Plastic Geogrid in Construction
Category: Industry News
Release Date: 2019-12-16
Summary: Convex-node grating-reinforced steel grating is also known as metal wire wrapped in high-density polyethylene and joined by high-strength ultrasonic welding, with reinforcing tapes whose tensile strength can be adjusted according to engineering requirements and various design variations.
Convex-node grating-reinforced steel grating is also known as metal wire wrapped in high-density polyethylene and joined by high-strength ultrasonic welding, with reinforcing tapes whose tensile strength can be adjusted according to engineering requirements and various design variations.
One cell of the convex-node steel grating reinforcement, also known as
Concept: By using high-density polyethylene packaging straps
Characteristics: Small extension with a crawling rate.
Product Description
The upgraded steel-plastic geogrid with convex nodes features a common grid structure that significantly reduces the interfacial shear strength at the mesh intersections; moreover, the weld points are prone to cracking, which complicates construction and compromises air-exhaust efficiency, thereby further exacerbating the product’s drawbacks. By optimizing the material proportions and modifying the bonding interface between the 506 and 200 units during installation, this design effectively addresses the aforementioned shortcomings of conventional plastic geogrids. Furthermore, the prominent welded nodes—referred to as “steel-grid convex nodes”—enhance the structural integrity and performance of the steel-plastic geogrid.
Product Introduction
One type involves extruding an embossed pattern onto the surface of engineering plastics to form a corrugated roller, which enhances weld strength and increases the coefficient of friction on ribbed surfaces. These effects, combined with fill materials that provide resistance to horizontal shear forces, improve the soil’s bearing capacity by enhancing its resistance to cracking on soft ground surfaces, thereby meeting the requirements of permanent construction projects.
According to the pattern of tensile direction, the plastic geogrid with convex nodes is classified into unidirectional and bidirectional types. The tensile yield strength of the steel grid with convex nodes ranges from 30 to 200 kN per meter, and can be customized according to user requirements.
Features
One type. Low elongation can be less than creep.
Type B plastic convex-node geogrid is corrosion-resistant and has a long service life: it is compounded with various additives to enhance its resistance to corrosion and oxidation, as well as to harsh environments such as acids, alkalis, and salts. Consequently, steel-plastic geogrids are suitable for permanent engineering applications, meeting diverse requirements over more than a century while maintaining excellent stability.
Convenient construction, short project duration, and low cost: Steel-plastic geogrid installation is easy—splicing and positioning are straightforward, the surface remains smooth, and overlapping or crossing is avoided—thereby effectively shortening the project schedule and reducing construction costs by up to 50%. Engineering applications include reinforcement of soft soil subgrades for highways and railways, abutments, approach roads, wharves, dams, spoil grounds, as well as crack-resistant pavement and retaining wall projects.
It exhibits high strength, minimal creep, and excellent adaptability to various soil conditions, fully meeting the requirements for highways, railways, and tall retaining walls. As shown in Figure 2, the interlocking design significantly enhances the bearing capacity of the support surface by providing rapid load transfer and effective lateral displacement restraint, thereby ensuring the durability of the subgrade.
High specific strength, high-capacity E. plastic convex-node geogrid products that are non-corrosive, aging-resistant, feature a high-friction-pattern design, have uniform apertures, are easy to install, and offer a long service life.
Keywords: Application of Convex-Point Steel-Plastic Geogrid in Construction
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