Table of Contents
What is Geotextile ??
Define Geotextile? Geotextile is defined as a permeable textile material used in contact with soil, rock, earth etc as an integral part of the civil engineering project, structure or system.
It may be of natural materials such as jute, coir, cotton etc. Or of synthetic polymers such as polypropylene, polyamide, polyester, polyethene.
Explain the functions of geotextiles ??
We simply defined WHAT IS GEOTEXTILE ?? You can check functions of geotextiles ppt for further information on the functions & applications of geotextiles.
Download functions of geotextiles pdf from this Link.
Read this article for the function of geotextile in road construction.
APPLICATIONS OF GEOTEXTILES
· Flexible paved road construction
· Pavement overlays
· Drainage
Flexible paved road construction
Table 1 Geotextile Requirements for Roadway Applications
PROPERTY | UNIT | REQUIREMNTS | |
MODERATE | HIGH | ||
Puncture Strength | N | 400 | 700 |
Dynamic Puncture | m | 0.018 | 0.012 |
Ultimate elongation | % | >50 | >50 |
Burst Strength | Pa | 2 | 3 |
Grab Strength | N | 700 | 800 |
Permeability | m/s | >Soil Permeability | |
Apparent Opening size | m | < .00015 |
2. Pavement overlays
Table 2 Paving Fabric Requirements
PROPERTY | UNITS | REQUIREMENTS |
Grab Strength | N | 450 |
Mass per Unit area | Kg/m2 | .auto |
Ultimate Elongation | %` | > 50 |
Melting point | 0C | 150 |
3. Drainage
Table 3 Physical Requirements for Drainage Applications
Property | Unit | High survivability | Moderate survivability | |
Puncture Strength | N | 690 | 420 | 260 |
Dynamic Puncture | m | .014 | .018 | .022 |
Burst Strength | Pa | 2757600 | 2068200 | 1275390 |
Elongation at break | % | 60 | 60 | 60 |
Geotextiles are an efficient effective and economic method of solving most of the geotechnical problems in roads.
The design engineer should be well aware of the possible problems and should use this relatively new tool for solving them.
For this, he should understand properties and capabilities of the geotextile material at hand.
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