Geogrid-As a soil reinforcement

It is a type of Geo-synthetic material, used as a soil reinforcement.

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Seminar on-
“GEOGRID AS A SOIL REINFORCEMENT”
Presented by:
-PATIL SACHIN SHIVAJIRAO
- B.E CIVIL ROLL NO-4150
- JNEC AURANGABAD.
Guide:
Prof. V.T.MORE

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INTRODUCTION
INTRODUCTION TO
GEOSYNTHETIC
MATERIALS

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GEOSYNTHETIC MATERIALS:
1) GEOTEXTILES
2) GEOMEMBRANES
3)GEOGRIDS
4) GEOCOMPOSITES

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GEOGRID
Fig .Showing A Typical Geogrid

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GEOGRIDS ARE NOTHING BUT THE OPEN
STRUCTURES FORMED BY BONDING
POLYMER STRIPS AT THEIR CROSS POINT
OR PUNCHING

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HISTORICAL DEVELOPMENT
1)FIRST USED FOR ROAD CONSTRUCTION
IN SOUTH CAROLINA IN 1930
2) FOR EROSION CONTROL IN 1960 IN
EUROPE AS WELL AS U.S.A IN 1969
3) IN GREAT WALL OF CHINA ALSO USED
IN THE FORM OF TREE BRANCHES.

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TYPES OF GEOGRIDS
1)WOVEN GEOGRID
2)NONWOVEN GEOGRID
WOVEN GEOGRID:
i.MICROGRID
ii.STRATAGRID
iii.ONE WAY GEOGRID
iv.BIAXIAL GEOGRID
v.MULTILAYER GEOGRID
vi.WELDED STRIP GEOGRID

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Fig. Showing micro grid
Fig.Showing Strata GridFig.Showing one-way geogrid
Fig.Showing Biaxial geogrid. Fig.Showing multilayer geogrid.
Fig.Showing welded geogrid.

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NEW LASER WELDED GEOGRID
1)WELDED PET GEOGRID
2)WELDED PP GEOGRID


Figure 2 Welded PP-geogrid
Figure1. Welded PET-geogrid

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GEOMETRY OF GEOGRID

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NON WOVEN OR EXTRUDED GEOGRID

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MATERIALS:
1)POLYSTER
2)POLYVINYL ALCOHOL
3)POLY VINYL CHLORIDE
4)POLY PROPYLEN

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GEOGRID TESTING:
1.GEOGRID RIB TENSILE STRENGTH TEST
2.PULL OUT TEST
3.JUNCTION TEST
4.CHEMICAL RESISTANT TEST
5.BIOLOGICAL RESISTANCT TEST

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INSTALLATION GUIDELINES:
1.MATERIAL IDENTIFICATION
2.MATERIAL HANDLING
3.GEOGRID PLACEMENT
4.PLACEMENT OF FILL MATERIAL

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FUNCTIONS:
1.FLUID TRANSMISSION

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FILTRATION:

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SEPRATION:

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AS A REINFORCEMENT:

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APPLICATIONS OF GEOGRID:
1. RETAINING WALLS
2. BRIDGE / RAILWAY ABUTMENTS
3.REINFORCED SOIL SLOPES
4. REINFORCED FOUNDATION OVER PILES
5. REINFORCED EMBANKMENTS OVER SOFT
FOUNDATION

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GEOGRID COMPARED WITH OTHER
SOLUTIONS
1.IT IS COST SAVING MATERIAL
2.IT INCREASES CONSTRUCTION SPEED
3.PROPER REINF OR CEMENT IS ACHIEVED
4.IMPROVED QUALITY

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DRAW BACKS:
1. POSSIBLE DAMAGE TO GEOGRID
2. IRREGULAR GEOMETRY
3. INCOMPLETE CODES AND

STANDARDISATION

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SITE VISIT:
CONSTRUCTION OF KRANTI CHOWK
FLYOVER in Aurangabad.
1.FOR MAKING THE LOAD TRANSFER
PLATFORM
2.FOR SEPRATION OF SOIL MASS
3.FOR RETAINING WALL
USE:

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CONCLUSION:
1.TO EFFECTIVELY SOLVE SOME PROBLEMS OF SOIL MASS
LIKE, BEARING CAPACITY, FAILURE OF SLOPES,
EROSION CONTROL, LAND SLIP REPAIR, ROADS, QUICK
CONSTRUCTION AND ALL OTHER, GEOGRID IS BETTER
SOLUTION .
2.GEOGRIDS ARE MAGIC MATERIALS TO YIELD
EXCELLENT RESULTS .

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REFERENCES:
-Sanjay Kumar Shukla, Sanjay Shukla, “Geosynthetics and Their 
Applications”, Bharti publication,New Delhi. Reprint 2010.
 pages (1-225)
- Purushottam Raj “Ground Improvement Techniques”, Laxmi
Publications, Delhi, Reprint 2011. pages (117-250)
-Geogrid | geoace.com

31. THANK YOU.
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