Geogrid/Geosynthetics arr_right_inav

Geosynthetics-Geograd

Description Specifications Scope of Application FAQ Download

Description

Geogrid is a reinforced geosynthetic material with a regular grid pattern formed by combining tensile strip units, primarily using polymer materials as the main raw material. Its open apertures allow for the embedding of fill materials, making it widely applicable in soft foundation reinforcement treatment. YH Uniaxial geogrid is made of high molecular polymer after extruded and laminated and punched in to regular mesh before longitudinal stretching. This process makes high molecule in direct line state in oblong oval net structure with uniform distribution and high node intensity. This structure has rather high tensile strength and stretch modulus. The soil offers ideal force carrying and diffusing chain system.

Specifications

Characteristics and Packaging


Item	Description
Packaging	Roll
Width (m)	1~3
Length (m)	50~100
Roll Size (m2/roll)	50~300

Properties

Uniaxial Stretched Plastic Geogrid (HDPE)

Properties	Unit	Inspection Standards	Product Specification
Properties	Unit	Inspection Standards	35	50	80	120	160	180
Tensile strength	kN/m	ISO 10319	35	50	80	120	160	180
Strength At 2% Elongation	kN/m	ISO 10319	7.5	12	21	33	47	52
Strength At 5% Elongation	kN/m	ISO 10319	21.5	23	40	65	93	103
Elongation At Nominal Strength*	%	ISO 10319	11.5

Uniaxial Stretched Plastic Geogrid (PP)

Properties	Unit	Inspection Standards	Product Specification
Properties	Unit	Inspection Standards	35	50	80	120	160	200
Tensile strength	kN/m	ISO 10319	35	50	80	120	160	200
Strength At 2% Elongation	kN/m	ISO 10319	10	12	28	42	56	70
Strength At 5% Elongation	kN/m	ISO 10319	22	28	56	84	112	140
Elongation At Nominal Strength*	%	ISO 10319	10.0

Features & Benefits

· Exhibits high tensile strength.

· Demonstrates minimal stress elongation rate, providing excellent lateral confinement and reinforcement capabilities for structures.

· Possesses superior physical and chemical stability, with outstanding resistance to aging, soil burial, and corrosion.

· Features a high friction coefficient, and its mesh structure fully integrates with soil-rock formations to enhance structural stability.

· Exhibits strong resistance to environmental stress and has a low coefficient of thermal deformation.

Application Instructions

【Construction Technology】

Base inspection → On - site measurement and lofting → Laying - Lap treatment → Inspection and acceptance

【Construction key points】 Installation Requirements:

Construction Site Requirements: The site must be compacted and leveled with a horizontal surface, free from sharp protrusions.

Grid Installation: On the prepared and compacted ground, install the geogrid with their primary stress direction (longitudinal) perpendicular to the embankment axis. Ensure smooth installation without wrinkles and maintain maximum tension. Use stakes and fasteners for secure placement. The grid should preferably be continuous without joints, with manual lacing connections between sections that meet at least 20cm wide. For multi-layer installations, stagger the seams between layers. After large-scale deployment, perform comprehensive leveling adjustments. Before compaction after each soil layer is placed, manually or mechanically tighten the grids uniformly to ensure full tension in the soil.
Following geogrid installation, manually place upper fill materials and complete compaction promptly. Avoid prolonged sun exposure, then proceed with mechanical material transport, leveling,and compaction. Implement mechanical spreading and rolling from both sides toward the center, maintaining compliance with specified density requirements throughout the process.

Scope of Application

Applicable for various types of soft foundation reinforcement treatments, enhancing and improving the bearing capacity of roadbed subgrades, as well as the stability of retaining walls under long-term stress conditions. Suitable for applications in steep slopes, dams, and abutment reinforcements, this solution improves engineering quality and extends the service life of the project.

FAQ

Q1: What is a geomembrane?

A geomembrane is a synthetic membrane liner or barrier used to control fluid migration in a wide range of civil, environmental, and industrial applications.
Q2: Why should I choose a geosynthetic barrier instead of traditional clay liners?

Geosynthetics offer superior impermeability, faster installation, reduced thickness requirements, and higher chemical resistance compared to traditional compacted clay liners.
Q3: How long does a geomembrane last?

Depending on the material and environmental conditions, service life can range from 30 to over 100 years.
Q4: Is it safe for drinking water or sensitive environmental applications?

Yes, certain geomembranes are certified safe for potable water use and meet environmental regulations like NSF or GRI-GM standards.
Q5: What factors should be considered when selecting a geomembrane?

Key factors include chemical resistance, mechanical strength, UV resistance, site conditions, expected service life, and installation method.
Q6: How thick should the geomembrane be?

Common thicknesses range from 0.5 mm to 3.0 mm, depending on application requirements and site-specific conditions.
Q7: Are there international standards or specifications for geomembranes?

Yes, ASTM, ISO, and GRI (Geosynthetic Research Institute) standards provide guidelines for testing and performance.