International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 10 Issue: 04 | Apr 2023
p-ISSN: 2395-0072
www.irjet.net
“Study of Geosynthetics and use of Non – Woven Green Geocomposite Blanket for Erosion Control and Slope Protection for Embankment” Sanjiw Kumar Student, M. Tech Transportation engineering, SRCEM (PALWAL) INDIA ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract – Geosynthetics are versatile material made of
low – volume road, erosion control element for embankment slope, act as barrier for small reservoir.
either natural or artificial fibers like jute, coconut, hemp, coir or synthetic polymeric fibers. Geosynthetics have application in Geotechnical Engineering, Marine Engineering, and Environmental Engineering. Geosynthetic used with soil improve it strength by modifying its properties. In geotechnical, engineering Geosysthetics have a number of application like – soil reinforcement for MSE wall, Slope stabilization, and improve bearing capacity of weak sub – soil, drainage, Erosion Control, soil stabilization. Geotextile, Geogrids, Geocomposite, Geocells, Geonets, Geomembranes, Geofoam, Pre – Fabricated Vertical Drain are main eight type of Geosynthetics.
The long and short-term properties of geosynthetics depends on the polymer, which is used to make geosynthetic.. Polyester and polypropylene are the most widely used synthetic polymers, followed by nylon and polyethylene. Permeable geosynthetic made of textile materials is called geotextile. Geotextiles aremade by weaving together a variety of different types of fibers and threads to create flat, textile-like structures (Holtz et al, 1997). Staple fibers, which are shorter filaments, may be long filaments, very long thin type of a polymer, between 20 and 150 millimeters in length. In most geotextiles, nonwoven and woven materials make up the bulk of the material. Nonwoven textiles are made by continuously extruding, spinning, blowing, or otherwise depositing synthetic polymer strands or filaments on a moving belt. After the filaments have been mechanically entangled by a bed of needles or heat-bonded, the nonwoven mass is either needle-punched or heat-bonded.
The primary functions of a Geosynthetics are Reinforcement, Separation, Filtration, Drainage, Barrier Protection, and Surficial Erosion Control. However, in some cases the Geosynthetic have dual function. Geotextile, Geocell and Geocomposite blanket are mainly use for Erosion control element for Embankment of railway & highway and Landfilling side slope protection. Embankment slope erosion and failure due to rainfall & wind is one of the most difficult problem in Geotechnical Exposed soil surface of road embankments side slopes subjected to impact of raindrops and wind velocity that creates detachment of soil particles, this cause Erosion Therefore, we need to protect the soil and slope with environmental friendly and sustainable product.
It is possible to employ Geosynthetics for filtration and drainage as well as separation and strengthening. Geotextiles, which functioned as filtration layer in coastal and riverbank area, prevent soil from entering riprap and other armor materials. Low-permeability soils may drained using geotextiles or geocomposites as drainage medium. In order to keep the design thickness and integrity of the highway intact, geotextiles are employed as separators between the road foundation materials and the soft subgrade. As a structural material, geotextiles and geogrids may utilized to strengthen a soil matrix by increasing its tensile strength.
Key Words: Geosynthetics, Geotextile, Geocells, Geocomposite, Erosion Control, Slope Stabilization, Reinforecement, Filtration, Separation.
1. INTRODUCTION “Geosynthetics” are made of synthetic and natural fibers. It has high tensile strength, which is used to improve properties of soil in geotechnical engineering, Marine Engineering, and Environmental Engineering. Geosyntheic use with soil for modifying the engineering properties and improve strength of weak soil. Natural and artificial both type of fibers used for geosynthtics manufacturing. Coconut coir, hemp, jute are some natural product used for geosynthetic in India on wide level because India has huge production capacity. Natural geosynthetic like coconut coirmat, jute coirmat and other natural product used in india on large scale , these having application as reinforcement for
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Impact Factor value: 8.226
Natural: Coir, Jute, Hemp (Cannabis sativa) Artificial: Polymeric and metallic.
1.1 Types Of Geosynthetics: Geosynthetics may categorized into many groups depending on manufacturing process. According to International Society of Geosynthetics, they are classified into following: 1. 2.
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Geotextile Geogrid
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