APPLICATION OF JUTE GEOTEXTILES FOR

CONSTRUCTION OF RURAL ROADS UNDER PMGSY

Presentation by

P K Choudhury

Principal Technologist

National Jute Board

Ministry of Textiles, Govt. of India

Kolkata

What is geotextile -

• Geotextile is the fabric which enhances the engineering

properties of soil when applied in or on soil.

• Natural Geotextile like, Jute Geotextile (JGT) deserve

separate mention because of its natural resource,

annual renewability and unique features

• There is hardly any difference between synthetic

geotextiles & JGT function-wise excepting the aspect of

long term durability of synthetic GT. The term

geosynthetics encompass both man made and natural

geotextiles

Jute in Textiles - Background

• Jute fibre was tried first among all natural fibres for ground improvement after their confirmed effectiveness as the ingredient in flexible packaging

• The British were the first to discover its potential, which was confirmed by tests at Dundee, Scotland in 1791.

• Jute sacks became popular & were used in Crimean War (1854-1856) & American Civil War (1860-65)

• Growing demand of sacks led to setting up of the first jute mill in 1855 near Kolkata followed by several other mills in the undivided Bengal

• Jute industry is perhaps the oldest surviving agro-industry in the world

• Jute fabric was applied in a road at Dundee in Scotland in 1920, at Strand Road in Kolkata by Bengal PWD in 1934 and in Myanmar during the 2nd World War with success?

USP OF JUTE

• High tenacity—comparable to man-made fibres

• High initial modulus—even higher than coir

• Low elongation at break—lowest among all natural

fibres—can provide good membrane support under load

• Highly hydrophilic –highest among all fibres

• High roughness Co-efficient- ensures better load

transference

• Excellent spinnability / weavability due to high cellulose

content- enables manufacture of customized geotextile

• Very high thermal stability—around 170°C

• Most drapable of all fibres- can shape itself to soil

contours

• Eco-concordant—Renewable resource : helps reduce

carbon foot print in construction

• Abundantly available

JUTE PLANT TO FABRIC ( GEOTEXTILE )

Plant Fibre

YarnFabric

760 gsm 760 gsm 1200 gsm

NON WOVEN JGT 500 & 1000 gsm OPEN WEAVE JGT - 292, 500 & 730 gsm

A glimpse of JGTs viz. woven, nonwoven open

weave etc. those have so far been developed by

IJIRA and used in various civil engineering

applications with success.

627 gsm 724 gsm

WOVEN

JGT

Chemical Constituents of jute fibre.

Constituents %

Cellulose 60 – 62

Hemi Cellulose 22 - 24

Lignin 12 – 14

Others 1 – 2

Properties of Natural Fibres vis-à-vis Synthetic Fibres

A fibre would be suitable for manufacturing Geotextiles / Agrotextiles when it possesses suitable mechanical andhydraulic properties

Type of

fibre

Tenacity

N/tex

Extension

at break

(%)

Initial

modulus

N/tex

Volume

swelling

%

Moisture

regain %

Lignin

content

%

Jute 0.3-0.9 1-1.8 17 - 19 44.3 12-14 12-14

Coir 0.18 41-45 4.22 - 10 30

Sisal 0.37 - 4.7 1.9-4.5 25 - 26 39.5 11-14 9.9

Polyester 0.3-0.8 15 - 55 6 - 12 - 0.4-0.6 Nil

Polypropy

lene

0.3-0.8 15 - 35 2 - 9 - <0.1 Nil

Construction /

Parameters

D W Plain for use in

rural road

DW Plain for use in river

bank ( rot resistant)

Width (cm) 100 - 200 cm 100 - 200 cm

Weight (gsm) at 20 % MR 724 (- 5%, + 10%) 627 (- 5%, + 10%)

Tensile strength (kN/m) MD x CD ≥ 25 X 25 ≥ 20 X 20

Ends X Picks / dm ≥ 94 X 39 ≥ 85 X 32

Thickness (mm) 1.85 (± 10%) 1.70 (± 10%)

Elongation at break (%) MD X CD ≤ 12 X 12 ≤ 12 X 12

Puncture Resistance (kN) 0.500 (± 10%) 0.400 (± 10%)

Burst Strengnth (KPa) 3500 (± 10%) 3100 (± 10%)

Permittivity at 50 mm const. head (/s)350 x 10-3 (± 10%) 350 x 10-3 (± 10%)

A.O.S. (Micron) O95 150 - 400 150 - 400

TECHNICAL SPECIFICATIONS OF TWO TYPICAL VARIETIES OF WOVEN JGT

Technical Specifications of Three Typical

Varieties of Open Weave Jute Geotextile

TYPE /PROPERTIES

1 2 3

Weight (g/m2) at 20%

M.R.

500± 10 % 600± 10 % 700± 10 %

Threads/dm (MD x

CD)

6.5(+4, -2) x

4.5(+4, -2)

8 (+4, -2) x

7(+4, -2)

8(+4, -2) x

8(+4, -2)

Thickness (mm) 4.5± 10 % 5.25± 10 % 5.5± 10 %

Width (cm) 122± 5 % 122± 5 % 122± 5 %

Open area (%) 55± 10 % 48± 10 % 40± 10 %

Tensile Strength

(kN/m) [MD x CD]

6.5 ± 10% x 6±

10%

12 ± 10% x 6±

10%

14± 10% x 7±

10%

Water holding

capacity (%) on dry

weight

500± 10% 500± 10% 600± 10%

SOME SALIENT RESEARCH FINDINGS

Percentage elongation at break of JGT is significantly lower than

that of synthetic geotextiles (maximum 15% against more than 50 % of

SGT) - (Ramaswamy & Aziz – 1989)

Substantial reduction (more than 50%) in rut depth under dynamic

load tests with JGT- (Ramaswamy & Aziz – 1989)

Loss of strength of JGT after a year is not a deterrent as, by that

time, JGT is seen to have helped in providing a self sustaining sub-

grade for most type of soils - (Ramaswamy & Aziz – 1989 )

The gain in strength of the sub-grade with time is compensated

against the loss of strength of JGT within the same time frame

(ibid & JU 2005)

NORMATIVE REFERENCESBIS -

Guidelines for application of Jute Geo-textiles for rain water erosion control in road & railway embankments and hill slopes( IS 14986:2001)

Two guidelines on rural road construction & river bank protection with JGT ( IS 14715 Part I & II : 2016 )

Guidelines for jute sapling bag for growth of sapling in nurseries ( IS 16089 : 2013

RD&SO, Ministry of Railways –

Guideline no GE:G1 (July 2003)—

Guidelines for earthwork in railway projects, 2007

Unified Standard Schedule of Rates by Indian Railways,2011

Indian Roads Congress—

Specifications for road & bridge works (2013) & Recommended practice for treatment of embankment slope & erosion control ( IRC : 56 & IRC SP : 48

State-of-the Art Report on JGT ( SP-21) prepared jointly by CRRI , IJIRA & NJB has been published by Indian Roads Congress in November 2011

Schedule of Rates ( SoR ) –

PWD, WBSRDA & I / W – Govt. of WB, PWD – Govt. of Assam & Meghalaya and all the Railway Divisions in India

Environmental Advantages of JGT

• During 100 days of jute growing period, 1 hectare of jute

plant can absorb about 15 MT of CO2 from atmosphere

and liberate about 11 MT of O2. Studies reveal that CO2

assimilation rate of jute is higher than trees (Inagaki,

2000; IJSG 2003).

• Main use of jute sticks (a retting output) is as fuel and

household uses. Yield of jute sticks is 2.5times the fibre

by weight. Jute sticks annually saves 5.06 million tons of

forest wood(in India and Bangladesh) and help in

preserving ecological balance.

• Jute leaves left in the field are good manures and

increase fertility of land.

Total No. of Works Undrtaken so far with the Use of

Jute Geotextiles in India

•Erosion Control & Hill Slope Stabilization – 63

•Road Construction – 70 (excluding 61 pmgs roads in WB)

•River Bank Protection –105 ( including 53 aila works)

•Control of railway Track settlement (3+7) - 10

•Agri- Horticulture & Forestry - 23

Total – 271 +

APPLICATIONS OF JGT IN THE INTERFACE OF

SUB-GRDAE & SUB-BASE OF ROAD

1. Sub-grade soil to be compacted to

100% MDD achieved by Standard

Proctor.

2. Leveling of sub-grade as per specified

profile

3. A thin cushion of local sand of 25 mm

thick is to be spread over the prepared

sub-grade to facilitate better drainage

and less chances of microbial attack

on JGT

4. JGT is to be laid by unrolling, ensuring

proper drape

Installation Guidelines

• Lateral and Longitudinal overlaps

between two JGTs should be of 100-150

mm

• Stapling of JGT with U-shaped nails (11

gauge) or suitable sharp edged material

like wooden or bamboo pegs in an

interval of about 750 mm.

Installation Guidelines

Installation Guidelines

• After completion of JGT installation, its

condition to be visually assessed for any

construction / installation damage.

• Torn /damaged portions, if any, should be

covered up by pieces of JGT with at least

75 mm overlapping and duly stapled on

all sides.

• Further, a thin cushion of local sand of

about 25 mm thick to be spread over JGT

to prevent puncture/damage due to rolling

of the overlying sub-base

Installation Guidelines

• Overlying layers of graded

aggregates (GSB, WBM) to be

spread and compacted to

desired MDD.

Note -

• WBM layer should be

completed before onset of

monsoon

• Movement of Heavy loaded

vehicles to be restricted during

compaction.

• Rutting if occurred, has to be

filled with proper material

• For application in curves/super-elevations, JGT to be

folded / cut and overlapped in the direction of the

turn. Folds in JGT are generally stapled at an interval

of 300 mm in curves.

By Folding By Cut pieces

Installation Guidelines

Economical Benefits – Conventional v/s

with JGT

Design Methodology- Conventional Design Methodology – With JGT

Conventional Rural Road

Construction follows guidelines of

IRC:SP:72-2015 specifications

Design by Experience

Based on experience gained from

lab studies and field trials over a

expanded period of time.

23

Sl

No.Road sites State & District

Year of

constructio

n

Initial

Subgrade

CBR (%)

Using Woven JGT

CBR value (%)

1.Kakinada Port Connecting

Road A.P (Kakinada) 1997 1.61 4.7(after 30 months)

2. Munshirhat Rajput Road W.B (Howrah) 2001 3.5 6.0 (after 1year)

3. Andulia to Boiratala Road W.B (N. 24 Parganas) 2005 3.221 0.47 (after 18 months)

4. U. T. Road to Jorabari Assam (Darrang) 2006 4.0 13.45 (after 23 months)

5. Rampur Satra to Dum Dumia Assam (Nagaon) 2006 3.0 12.9 (after 24 months)

6. Chatumari to MDR-14 Oridsa (Jajpur) 2006 3.0 8.8 (after 31 months)

7.Gehlawan village to PMGSY

roadM.P (Raisen) 2007 2.0 10.6 (after 23 months)

8. Kansa to Bati W.B (Mursidabad) 2013 3.9 7.2 (after 16 months)

9.Promod Nagar to Muga

Chandra Para Tripura (West Tripura) 2013 7.0 9.51 (after 18 months)

10.V. Koracharahatti to T-10

RoadKarnataka (Davanagere) 2012 4.0 11.8 (after 16 months)

Economical Benefits : Design by Experience on enhanced CBR

24

• Quantification can be explained through an example with certain assumptions as follows –

1. CBR of sub-grade soil : 4 %

2. Considering Enhancement of CBR of sub-grade soil by 1.5 times of control4% CBR : 6 %

3. Cumulative Traffic ESAL : 60,000 – 1,00,000

4. Length of Pavement : 1000 m

5. Carriageway & Roadway Width of Pavement : 3.75 m & 7.5 m

6. Width of JGT with 10% overlapping : 8.6 m

7. The rates of materials are taken from SoR, PWD, Roads & Bridges, WestBengal, August 2014.

8. The rates of riding surface (premix carpet & tack coat) not included.

9. Cross-section of pavement as per guidelines mentioned in IRC:SP:72-2007

10. Site assumed for construction of road is near Howrah and is about 20 kmfrom Dankuni station

How JGT makes road construction economical

25

Cross-sectional View - With & Without JGT

Pavement constituents

ITEMS Pavement Thickness with

Conventional DesignPavement Thickness

with JGT

CBR 4%

Enhanced CBR 6% (1.5

times of 4% CBR)

WBM – III 75mm 75mm

WBM – II 75mm 75mm

GSB – III 75mm 125mm

GSB-II 100mm ---

Total 325 mm 275 mm

Composition of Pavement Constituents

Composition of Pavement

Constituents

Materials of Pavement Constituents

GSB - II consists of 1st class brick aggregates

(40mm down) & sand (in proportion

60:40)

GSB - III consists of stone chips and sand

(2.36 mm below)

WBM - II consists of 63 – 45 mm size

WBM - III consists of 53 – 22.4 mm size with

stone screening Type B

26

N.B. The calculated savings are considered under idealized conditions of

road construction. Also the calculated savings may vary from region to

region and distance between worksite from source of materials

27

Comparative Cost Analysis of Pavement Constituents ( Rs./ km)

Savings of Rs. 143812.00 /km or 4 %

from conventional method

Conventional With JGT

Layers Rate Thickness

(m)

Width

(m)

Amount

(Rs./km)

Thickness

(m)

Width

(m)

Amount

(Rs./km)

WBM (Gr. III) 2757.21 0.075 3.75 775464 0.075 3.75 775464

WBM (Gr. II) 2725.37 0.075 3.9 797171 0.075 3.9 797171

GSB – III 1456.34 0.075 4.05 442362 0.125 4.05 737270

GSB – II 1962.5 0.1 8.8 1727000

Medium Sand

above & below

JGT

896 0.05 8.6 385280

Woven JGT 105 --- 903000

Total Cost 3741997

≈ 37 lacs

3598185

≈ 36 lacs

Case Study

• NAME OF THE PROJECT : Strengthening of road sub-grade

Kanksa to Bati, Murshidabad, WB

Pre work Condition of Road

Properties of sub soil :

Composition : Silty clay

Moisture content : 30 %

Liquid limit : 40 – 45%

Plasticity Limit : 28%

OMC & MDD :15 % & 1.76g/cc

CBR % ( Soaked) : 3

Soil properties -

Depending upon CBR and calculated traffic volume, thickness of

pavement to be determined.

Requirement of JGT to be ascertained

Compaction of Sub-

grade

Spreading Sand

Laying of JGTUnrolling of subsequent rolls of

JGT with overlapping

Compaction of Sub-

base

Condition of road after 2 years

Leveling of damaged road in

progressDamaged Road, kakinada, AP

( After Devastating Flood on 06.11.1996 )

RECONSTRUCTION OF KAKINADA PORT

APPROACH ROAD WITH JGT, AP

Laying of Woven Jute Geotextile

on Sub-Grade

Condition of Road even after 20 years

of its construction with JGT

NAME OF THE PROJECT:Construction of highway embankment on soft marine soil using Jute

Geotextile at Kakinadaport – A P

OBJECTIVE :Reinforcement of the highway embankment with the help of JGT by

minimizing post-construction settlement, lateral spreading of fill material etc.

PROPERTIES OF SUB SOILComposition : mainly clay up to a depth of 4 m with

occasional mixture of silt or sand

Moisture content : 70 – 80 %

Liquid limit : 60%

Plasticity Index : 28%

Bulk density : 1.3 mg/m3 – 1.45 mg /m3

Undrained shear strength : 6.0 kN/ m2

[in situ Vane shear test]

Compression index ( Cc ) : 0.225

Co-efficient of consolidation ( Cγ ) : 2.0 x10-7 m2/ sec

PROPERTIES OF JUTE GEOTEXTILE USED –1. Weight : 750 gsm

2. Tensile strength : 20 kN / m

3. Pore size (O90) : 250 micron

4. Type of JGT : Woven (Grey)

IMPROVEMENT OF CBR VALUES OF SUB-GRADE SOIL 30 MONTHS AFTER

APPLICATION OF JGT

Natural soil( CBR % before laying JGT

Improved soil CBR % after 30 months of laying JGT

Unsoaked

specimen

Soaked

specimen

Unsoaked

specimen

Soaked

specimen

2.10 1.61 6.03 4.78

JGT laid on the sub-grade.

Widening of Munshirhat to Rajpur Road, Howrah

Consolidation of brick metal

laid over JGT

Condition of JGT Treated Widened Road Even After Six yrs. of Application

NAME OF THE PROJECT :

Widening and strengthening of Munshirhat –Rajpur Road, West Bengal.

OBJECTIVE :

Strengthening of the widened portion of the sub-grade on both sides of an existing district road with use of woven Jute Geo-textile.

PROPERTIES OF SUB SOILType of soil : Organic Silty Clay (OL)

Avg. Moisture content : 16.76 %

Avg. LL : 48.73 %

Avg. PL : 29.69 %

Avg. PI : 19.04

Avg. O.M.C. : 19.14 %

CBR : 3.55 %

PROPERTIES OF JUTE GEOTEXTILE USED

1. Weight : 760 gsm

2. Tensile strength : 20 kN / m

3. Pore size (O90) : 300 micron

4. Type of JGT : Woven (Rot Resistanat)

CBR VALUES OF SUBGRADE SOIL BEFORE AND AFTER

LAYING OF JGT

Avg. soil CBR %

(before laying JGT)

Improved soil CBR %

(after laying JGT)

3.55 6.0

ANDULIA – BOYRATALA ROAD BEFORE LAYING JGT

Compacted Sub-grade

Strengthening of Road Sub-Grade with JGT, Andulia - Bairatala, 24 Pgs ( S)

Condition of JGT treated road after 18 monthsPerformance Evaluation

NAME OF THE PROJECT :

Construction of Andulia –Boyratala Road With

JGT under PMGSY Project in 24 pgs (North)

District, West Bengal.

OBJECTIVE :

The main objective of the project is to evaluate the extent of improvement in CBR of the sub-grade by use of Jute Geotextile in a rural road.

PROPERTIES OF SUB SOILType of soil : ORGANIC SILTY CLAY (OL)

LL : 45.20%

PL : 27.10%

PI : 18.10

O.M.C. : 23.5%

MDD : 1.72 gm/cc.

PROPERTIES OF JUTE GEOTEXTILE USED

1. Weight : 810 GSM

2. Tensile strength : 30 kN/m

3. Pore size(O90) : 150 μ

4. Type of JGT : Woven Untreated

Soaked soil CBR (before laying JGT)

Improved soil CBR (after 18 months of laying of JGT)

3.22% 10.47% at 0.25 km 14.00% at 1.40 km

CBR VALUES OF SUBGRADE SOIL BEFORE AND AFTER LAYING OF JGT

Construction of Rural Road with JGT at Tripura

Manufacture of JGT at

Tripura Jute Mills

Promodnagar to

Mugachandrapara Road

Laying of JGT on Road Sub-grade Condition of Road after 2 yrs.

JGT application in progress at Bir Chandra Manir Mukh

Road to Nishikanta Murasingha Para PMGSY road, Tripura

The site and installation of JGT under progress, March,2017

Construction of PMGSY Road with JGT at

Bider, KRRDA

Laying of JGT on

Subgrade

Vulnerable slope of kamar to Poothari PMGSY Road

,Nandagaon, Mathura, UP

An ideal case to stabilize the slope of road embankment with the use of OW JGT -

Application of JGT to prevent pot holes and

refection cracks, Garia Stn Road, PWD, Govt. of WB

Pre-treatment Application of JGT on surface

After treatment After 10 yrs of application

Application of JGT to prevent pot holes / refection cracks :

Raiganj to Fatepur (Kaliaganj), SH-10A, PWD, Govt. of WB

Direction

of laying

Jute Geotextile

Fixing nail

Graded slope

Grass plant

Toe anchor

(150 mm x 150mm)

150

Shoulder anchor

(150 mm x 150mm)

+

Impounded of 2.87 litres of water per sq.m. of 500 gsm open weave JGT on a 1:2 slope

APPLICATION OF JUTE GEOTEXTILE IN SLOPE STABILIZATION

Destabilized Mine Spoil

heap at SahashradharaSprouting of plants after laying

of JGT.

Stabilized JGT treated mine spoil heap

and growth of vegetation.

A FEW CASE STUDIES :

NAME OF THE PROJECT :

Application of JGT for stabilization of slope of mine-spoil in Uttarakhand.

OBJECTIVE :

Stabilisation of slope by checking the slide of soil, debris and boulders

during heavy rains and restoration of the vegetative cover destroyed

due to mining activities.

PHYSICO–CHEMICAL CHARACTERISTICS OF SOIL :

Characteristics & Unit Project Area Under JGT

1.Texture Class SL( Sandy loam )

2.Sand ( % ) 66.60

3.Silt ( % ) 19.50

4.Clay ( % ) 13.90

5. pH 08.10

6.CaCO3( % ) 68.10

7.Total Nitrogen ( %) 00.06

8. Available P2O5 ( kg /ha ) 03.78

9. Available K2O ( kg / ha ) 44.10

OPEN WEAVE

JGT SAMPLE

500 gsm

Properties OPEN WEAVE

Weight (gm/sq.metre) 500

Threads/dm (MD x CD) 6.5 x 4.5

Thickness (mm) 5

Width (cm) 122

Open Area (%) 50

Strength (kN / metre) (MD x CD) 10 x 7.5

Water holding capacity on dry

weight (%)

500

Fabrics can be tailor-made for specific end uses

RESULTS :

1. Vegetation Establishment

Excellent yield of 9850 Kg/ha compared to 1960 Kg/ha in control

2. Moisture Improvement

JGT helped in moisture conservation (40% - 50%)

3. Erosion Control

Reduced the monsoon run-off from 57% to 37%

Delayed and attenuated the flood peaks by 20 minutes and more than 60%

respectively

The soil erosion was reduced to 8 ton per / ha, near permissible limits within

a period of 6 years.

The structure retained a huge quantity of debris (62,000 cu m).

4. Soil Improvement

Organic carbon content increased from 0.13 % to 0.26%.

Available P2O5 increased from 5.4 kg /ha to 32 kg / ha.

CaCo3 content decreased from 55 to 34% and

pH value reduced from 8.1 to 7.7 over a period of 7 years.

DENUDED / ERODED OF SLOPE

EMBANKMENT

SLOPE PROTECTION OF FLOOD EMBANKMENT WITH JGT, ODISHA

LAYING OF JGT

ON PREPARED SLOPE

STABILIZED SLOPE WITH

VEGETATIVE COVER

STABILIZED MINE SPOIL

WITH JGT DESTABILIZED SPOIL HEAP,

SINGRAULI, UP

LAYING OF JGT ON

PREPARED SLOPE

LAYING OF JGT ON THE

PREPARED SLOPE

SLOPE PROTECTION OF BRIDGE APPROACH WITH JGT

MUNDESWARI, WB

STABILIZED SLOPE WITH

VEGETATIVE COVER

STABILIZATION OF BRIDGE APPROACH WITH JGT

MELBOURNE, AUSTRALIA

LAYING OF JGT ON THE

PREPARED SLOPE

STABILIZED SLOPE WITH

VEGETATIVE COVER

ERODED SLOPE

SLOPE STABILIZATION WITH JGT, MADHUSUDHANPUR, EASTERN RAILWAY

DRESSING OF SLOPE

LAYINF OF JGT ON

PREPARED SLOPEVEGETATIVE COVER OVER THE

STABILIZED SLOPE

JGT FOR TREATMENT OF ZONE AT RIGHT BANK OF TEESTA RIVER AT POWER HOUSE AREA TLDP-

III,NHPC, RAMBI, WB

Laying of JGT on Prepared Slope and Vegetation Establishment

DEBRIS SLIDING FROM TOP

OF SONAPUR SLIDELAYING JUTE GEOTEXTILE

SLOPE COVERED WITH JGT

WITH WIRE CRATES AT TOE

WIRE CRATES AT TOE SLOPE COVERD WITH

VEGETATION

HILL SLOPE STABILIZATION WITH JGT AT SONAPUR LAND SLIDE

AREA, MEGHALAYA

DESTABILIZED SLOPE NEAR PROJECT SITE OF NTPC, KOLDAM

PROJECT, KULLU, HP

Laying of JGT on Prepared Slope and

Vegetation Establishment Thereafter

Hill slope stabilization with

JGT at Ladakh - A BRO work

Stabilized hill slope and

formation of ice on JGT

Hill Slope Stabilization with JGT at Adverse Climatic Zone ?

Sand Dune Stabilization with JGT in Cold Desert ?

Formation of sand Dune Laying of JGT Yes, Greenery in Desert

Slope Stabilization with JGT, Jorabani to Imphal Road , Manipur

Destabilized Slope Laying of JGT Stabilized slope

Slope Stabilization with JGT, Karimganj - Bangladesh Road, Assam

Eroded slope of

road embankmentDressing of slope

for laying JGTLaying of JGT

Effect of JGT in hill slope stabilization, soil & nutrient loss reduction,

CSWCRTI, Ooty, Tamil Nadu

Without JGT

With JGT

Growth of vegetation & collection of

eroded soil for different treatment plots

TreatmentRainfall

(mm)

Runoff

(mm)

Percentage

of runoff

Soil loss

(Tonnes

/ha)

700 GSM 125.00 1.8 1.0 0.003

600 GSM 125.00 2.2 1.4 0.018

500 GSM 125.00 2.7 2.0 0.041

Control 125.00 41.4 33.0 9.427

RAINFALL, RUNOFF AND SOIL LOSS OBSERVED

FROM JANUARY TO JUNE 2014 WITH THREE

VARIETIES OF JGT

Treatment Rainfall

(mm)

Runoff

(mm)

Percentage

of runoff

Soil loss

(Tonnes/

ha)

500 GSM

Synthetic125.0 10.0 8.0 0.2

500 GSM Non

woven125.0 7.8 6.0 0.2

500 GSM

Open Weave125.0 6.9 5.5 0.3

Control 125.0 13.4 11.0 1.7

RAINFALL, RUNOFF AND SOIL LOSS

FROM JANUARY TO JUNE 2014 IN

60 % SLOPE

ROOT GROWTH OF GRASS UNDER

DIFFERENT TREATMENTS AND

SLOPES AFTER ONE YEAR

TreatmentsRoot depth

(cm)

Root lateral

spread (cm)

Root

weight/plan

t

Root

volume (cc)

Root mass

density

(gm/cc)

Volume of

soil bind by

the root(cc)

90 % slope

500 GSM

Synthetic31.0 26.6 5.9 35 0.15 68873

500 GSM

Non Woven

JGT

39.0 35.6 6.6 45 0.19 155200

500 GSM

Open Weave

JGT

37.0 40.3 7.7 50 0.19 188686

Control Plot 33.0 24.8 4.8 25 0.13 63730

TreatmentsPlant height

(cm)

No of

Tillers/plant

Biomass

(t/ha)

Foliage

lateral

spread (cm)

Surface area

protected by

the grass

(cm2)

90% slope

500 GSM

Synthetic93.33 110.9 10.4 109 9331

500 GSM

Non Oven

JGT

102.33 115.6 10.5 116 10659

500 GSM

Open Weave

JGT

101.00 120.3 11.2 118 10935

Control Plot 81.33 104.6 9.2 105 8659

GRASS GROWTH CHARACTERS

UNDER DIFFERENT TREATMENT

AND SLOPES AFTER ONE YEAR

EXPERIMENT IN SANDS OF JAISALMER,

RAJASTHAN WITH JGT

• This is a unique experiment to combat threats

of severe wind erosion in sands

• JICA is associated with project along with the

State Forest & Environment Deptt

• On the basis of observations of the foreign

experts open weave JGT (200 gsm) was

designed. The special feature of the fabric is its

thickness –at least 7.5 mm in the warp across

the direction of wind—and the pore size—10

times the maxm thickness of the fabric.

• Slides to follow reveal the results after 18

months

APPLICATION OF JUTE GEOTEXTILE FOR SAND DUNE

STABILIZATION IN COLD DESERT, RAJASTHAN

Destabilized Sand Dune – No Growth of Vegetation

Wind Induced Sand Movement Blocks Roads and Canal

SAND DUNE STABILIZATION WITH JUTE GEOTEXTILE

Laying of JGT Plantation of Local Species

Stabilized Sand Dune with Growth of Vegetation ( Afforestation )

For further details pl. contact : Ph - 033 22267534, 9051395619

E mail - jutegeotech@gmail.com, Website- www.jute.com