RBI Grade 81
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Transcript of RBI Grade 81
Presentation
On
“RBI Grade 81 – A Natural Pavement Material & Soil Stabilizer”& Soil Stabilizer”
(A Cost Effective , Rapid, Environment Friendly Pavement Material & Soil Stabilizer )
By
Alchemist Touchnology Limited, New Delhi
Road Building International (RBI) Grade 81
� Pavement Material & Soil Stabilizer developed by
the South African Army in the beginning of 90’s
for pavement engineering applications by RBI.
� RBI Grade 81 is a natural inorganic Pavement
Material & Soil Stabilizer which re-engineers &
modify the properties of soil to strengthen themodify the properties of soil to strengthen the
same.
� RBI Grade 81 is patented worldwide including
India.
Properties
� Powder stabilizer
� Grey color
� Non-inflammable
Effectiveness of RBI Grade 81 with Different Types of Indian Soils
Untreated
(UT)
Treated
(T)
Type
of
Soil
CBR % UCS, kg/sqcm
CRRI IITKgp IITR IITM RAASTA CRRI IITKgp IITR IITM RAASTA
UT Clay 4 3 - 2 5 5 0 0 3
T with
RBIClay 25 78 - 22 42 15 19 14 14
UT Silt 8 - 13 - 10 4 - - 16
( All results are with 4% RBI Grade 81)
UT Silt 8 - 13 - 10 4 - - 16
T with
RBISilt 198 - 114 - 32 32 - - 39
UT Sand 22 - - - 14 0.5 - - 5
T with
RBIsand 53 - - - 143 7 - - 23
UT Gravel 30 - 90 - 34 3 5 -- 2.1
T with
RBIGravel 197 - 361 - 180 26 35 -
19*(6%
Stabiliser)
Effectiveness of RBI Grade 81 with Different Types of Indian Soils
Untreated
(UT)
Treated
(T)
Type
of
Soil
PI (Plasticity Index) (%) FSI (Free Swell Index) (%)
Sample
1
Sample
2
Sample
3
Sample
4
Sample
5
Sample
1
Sample
2
Sample
3
Sample
4
Sample
5
UT Clay 18 11.5 29 24.2 46.4 16.6 20 33 61.5 53.8
( All results are with 4% RBI Grade 81)
UT Clay 18 11.5 29 24.2 46.4 16.6 20 33 61.5 53.8
T with
RBIClay 11.7 5.2 8.8 13.3 21.2 3.2 4.3 13 23.1 21.2
UT Silt 10.3 11.6 10.3 5.6 23 5 16.6 0 9.1 8.3
T with
RBISilt 5.4 6 2.3 1 10.6 0 0 0 0.8 2.1
� Construction time reduction by 30 – 40%
� Drastically increases the strength
� Treated soil is water resistant & prevents
damage to the road foundation
� Reduces transport & earth-moving costs
� Reduces leaching and contamination of
ground water
� Reduces use of bitumen.
� Reduces energy consumed in road
construction
Advantages of RBI Grade 81 Environmental Benefits of using RBI 81
� Reduces transport & earth-moving costs
by about 60%
� Longer Durability
� Reduces Maintenance Cost
construction
� Saves construction material like
Aggregates, Good soil
� Saves non-renewables resources in
construction process
� Reduces the Carbon Emission resulting
into carbon credits
Application Areas
� Pavements
� Highways & Expressways
� Hill Roads; High Altitude
Roads
� Unpaved Roads
� Bricks & Paver Blocks
� Low Cost Housing
� Footpaths; Boundary
Walls
� Railway Embankments� Unpaved Roads
� Pothole Repair
� Cold Recycling
� Helipads; Airfields
� Hard Standing Ground
� Op Tracks
� Mule tracks
� Railway Embankments
Construction Equipments
1. JCB 4. Rotavator
2. Dozer 5. Water Sprinkler
Pavement Design Catalogue
Sub-Grade CBR 2% (CBR 10% using RBI)
Traffic
msa
Thickness
mm
Pavement Composition
Bituminous Surfacing Base Sub-Base
BC DBM
10 850 (540) 40 100 (50)
20 850 (565) 40 130 (75)
IRC Code References For Reducing Pavement Thickness
250
(450)
46020 850 (565) 40 130 (75)
30 900 (580) 40 150 (90)
50 925 (600) 40 175 (110)
100 955 (630) 50 195 (130)
150 975 (650) 50 215 (150)
� Rise in CBR from 2% to 10 %,
� There is saving of DBM by 42 %
� Saving in aggregates for sub base & base will be 37 %
� More than 50% saving in aggregate as per IRC:37- 2001
IRC Code References For Reducing Pavement Thickness
Relation – IRC:37-2001, Annexure I:
Sub-Grade:
E3 (MPa) = 10 x CBR , for CBR< 5 %
E3 (MPa) = 17.6 x (CBR)0.64 for CBR > 5%
Granular Sub Base and Base
E2 (GSB + Base), MPa = E3 (Sub-Grade), MPa x 0.2 x (h,mm)0.45
Substitution of Layer
E1H13/12(1 - µ2) = E2H2
3/12(1- µ2), for both granular layers µ = 0.40
E1H13 = E2H2
3 H1(RBI) = (E2 / E1)1/3 x H2
Case Study
Reasi - Pauni Road
Katra, J & KKatra, J & K
Oct 2008
(13 BRTF)
Road Cross Sections, Hill Road
Conventional Technology RBI Grade 81 Technology
Layer
Layer
Thickness
(mm)
Layer
Layer
Thickness
(mm)
SDBC 25 SDBC 25
BM 75Aggregate+ 4% RBI Grade 81 150
WBM 75
WBM 75Soil + 4% RBI Grade 81 150
WBM 75
WBM 100 Soil + 2% RBI Grade 81 100
GSB 150
Saving in Pavement Thickness
GSB 150
Total Thickness 725 Total Thickness 425
Savings : Case Study Reasi - Pauni Road
253 cum250
300
Un
it v
alu
es
Savings:
1. Aggregate = 85%
2. Bitumen = 67 %
3. Truck Trips = 73%
4. Time Savings = 40 %
Comparison Chart
136 x 10 kg
42 No's
180 hr
36 cum44 X 10kg
11 No's
108 hr
0
50
100
150
200
Quantity of
Aggregate
Quantity of
Bitumen
Truck trip Time
Un
it v
alu
es
� Conventional Pavement
� RBI 81 Pavement
Field CBR by DCP
Sr.
NoLayer
Date of
Laying
Field CBR by DCP
%
19-10-08 20-10-08 21-10-08 22-10-08 19-11-08
1 Sub-Grade 18-10-08 24 43 48 51 -1 Sub-Grade 18-10-08 24 43 48 51 -
2 Sub-Base 19-10-08 - 73 98 175 375
3 Base 20-10-08 - - 94 135 375
Taking Core of RBI Grade 81 Patch After 9 Months
Oct 08 – Jul 09
Stiffness & E Value by Geoguage
Property Type of Stretch Jul-09(9 Months)
Apr-10(18 Months)
Increment
(%)
Conventional
Stretch/RBI 19.47 19.23 -1.26
Stiffness Grade 81
Stretch
19.47
32.43
19.23
36.22
-1.26
10.47
E Value
Conventional
Stretch/RBI
Grade 81
Stretch
168.84
281.27
166.76
314.15
-1.24
10.46
Performance Certificate
CONSTRUCTION OF AIRFIELD AT
NYOMA (LADAKH)NYOMA (LADAKH)
Construction of Airfield using RBI Grade 81
� Altitude of about 13500 Ft.
� Temperature of -30o C to +30o C
� Design: One layer of 250 mm of Sub Grade stabilization
with 4% RBI Grade 81
Construction Process
Finished Surfaces – An Overview
Finished Surfaces & Field Testing on Airfield
CLAY
SAND
Field Testing by Geoguage and Core Cutting
Field Testing by DCP and LWD
Landing and Takeoff at Nyoma Airfield Runway
Source: http://livefist.blogspot.com/2009/09/iaf-32-lands-at-nyoma-ladakh.html
Landing at Nyoma Airfield Runway
Source: http://livefist.blogspot.com/2009/09/iaf-32-lands-at-nyoma-ladakh.html
Landing Marks at Nyoma Airfield Runway
Test Results By Geogauge on Sub-Grade of Airfield
After 28 Days & 7 Months
Properties RequiredAchieved
October 2009
Achieved
April 2010
Increment
(%)
Stiffness (KG)
MN/m10.67 21.47 23.94 11.50
E Value
MPa92.52 186.24 207.64 11.49
CBR
(%)28 142 174.57 22.94
UCS
Kg / sq cm5.50 22.60 23.94 5.93
Performance Certificate of Airfield
ASSAM Project (OIL)ASSAM Project (OIL)
Trial in Duliajan, Assam
� State : Assam
� Project Name : Parking Area for Mobile Rig
� Length : 27 m
� Width : 12 m
� Design : 100 mm Soil Stabilized with 4% RBI Grade 81
� Soil Type : Clay
� Condition : Saturated Sub Grade
: Moisture Content more than 50%
The Location
Dewatering
Pulverizing Soil
Spreading RBI Grade 81
Mixing RBI – 81 with Soil by Rotavator
Initial Compaction
Final Compaction
COMMONWEALTH
GAMESGAMES
60 M X 6 M STRETCH CONSTRUCTED USING
RBI Grade-81
INITIAL CONDITION OF STRETCH
FINISHED STRETCH WITH RBI GRADE 81
PARKING AT SIRIFORTPARKING AT SIRIFORT
INITIAL CONDITION
FINISHED LOOK
Applications in Perma-Frost Condition
� Application in Italy
� Quarry Road
� Truck Load 40 MT
� 3 Years without Maintenance
RBI 81 Treated SurfaceUntreated Surface
Cold Recycling with RBI Grade 81
SOR
KARNATAKAKARNATAKA
IRC
ACCREDITED ACCREDITED
Some Completed Works in
IndiaIndia
Quarry Road
� State : Karnataka
� Project Name : Quarry Road near Weigh Bridge
� Location : Kolar
Paved Road
� State : Jammu & Kashmir
� Project Name : Durbal Hanjik Road, Badgam
� Location : Srinagar
Narhar (Pilani)
� State : Rajasthan
� Location: Pilani
� Length : 220 m
� Width : 3.75 m
Road Made Using Iron Ore Waste From Mines
� State : Karnataka
� Project Name : PWD Approach Road to BBH Mines
� Location : Chitradurg
Instead of soil from outside mines waste was used in construction
Highway Road in the Hills
� State : Jammu & Kashmir
� Project Name : Reasi Pauni Road
� Location : Katra
Highway Road in the Hills (Contd)
� State : Jammu & Kashmir
� Project Name : Km 63.10, Jammu Poonch Highway
� Location : Tanda Bamla Section, Jammu
Desert Roads
� State : Rajasthan
� Project Name : Kota Sawai Madhopur Road, SH-33
� Location : KM 17, Kota
Desert Roads (Contd)
� State : Rajasthan
� Project Name : Mawali Tali Bhuria Dhora Road
Nr. South Camp
� Location : Mahajan Ranges, Suratgarh
Village Roads
� State : Orissa
� Project Name : Uttara Balakati Khurda Road
� Location : Barijanga
Village Roads (Contd)
� State : Orissa
� Project Name : PMGSY Rural Road
� Location : Village Dhamra
Village Roads (Contd)
� State : Tamil Nadu
� Project Name : Internal Village Road
� Location : Tirupur
City Road
� State : Delhi
� Project Name : Connecting Road Near Air force
School & CSD Canteen, Officers Quarters
� Location : Delhi Cantt.
Off Site Mixing
� State : Karnataka
� Project Name : Campus Road
� Location : KGA, Bangalore
Forest Road
� Forestry roads – The benefits of using RBI 81 are particularly self-evident
when building roads in a fragile natural environment. RBI 81 do not place an
additional burden upon their precious natural resources
Some International Applications
Main road into city of Kigali - RwandaSecondary paved roads - KenyaHeavy traffic paved road – Israel Main road into city of Kigali - RwandaSecondary paved roads - KenyaHeavy traffic paved road – Israel
Access road to a construction site
IsraelAccess roads and drilling pad
Angola
Township roads - South Africa
Alchemist Touchnology Limited
Building No. 23, Alchemist House
Nehru Place, New Delhi- 110019
Tel – 011 - 40600800
Fax – 011 - 40600888
Website- www.rbigrade81.com
RBI 81 Road
Asphalt Road