RBI Grade-81
An Inorganic Soil Stabilizer and Pavement Material
RBI Grade-81
A Cost Effective , Rapid-Deployment, Environmentally Friendly Pavement Material
• A revolutionary inorganic, advanced soil stabiliser to construct highly durable,
cost-effective and eco-friendly roads, highways and other pavements
• The only comprehensive soil stabiliser that has a track record of success of over
20 years – all around the world.
• The only soil stabilizer with a worldwide patent - India Patent No.: 220094
• The only patented advanced soil stabilizer in the world that is certified by its
country of origin - The South African Beaureu of Standards as approved for road
construction
• This approval has come after extensive testing by the Council of Scientific &
Industrial Research (CSIR)
• Only Internationally Patented Advanced Soil Stabiliser in the country being
manufactured in India under the Honorable Prime Minister’s Make in India
program
Approvals & Recommendations
Ministry of Road Transport & Highways
NRRDA
Military Engineering Services
Ministry of Environment, Forest & Climate Change
Indian Roads Congress
CRRI
In the SOR’s of 8 States, with another 3 in process
PMGSY - Various States
Indian Institute of Technology, Kharagpur
Indian Institute of Technology, Roorkee
Indian Institute of Technology, Madras
Indian Institute of Toxicology & Research, Lucknow
RBI Grade-81 in State SORs
RBI Grade-81 is already in the SORs of the following 8
States:
• Assam • Rajasthan
• Karnataka • Mizoram
• Puducherry • Jharkhand
• Arunachal Pradesh • Madhya Pradesh
• Uttarakhand
International Certifications & Recommendations
World Bank
World Road Association
South African Bureau of Standards
Council for Scientific & Industrial Research – South Africa
Ministry of Transport, Division & Infrastructure - Portugal
PA & CO International - Romania
Ministry of Road Building Materials - Ukraine
Al-Futtaim Tarmac - UAE
European Design Guidance for Road Pavement Foundation
Scientific Studies on RBI Grade-81
Eco Friendly Road Technology: RBI Grade-81 Natural Soil Stabilizer & Pavement Material;
MoEF, IIT Madras Chennai, 2016
Effect of Fly Ash and RBI Grade-81 on Black Cotton soil as a sub grade for Flexible
Pavements; IJIET, 2014
Comparative Study of Black Cotton Soil Stabilization with RBI Grade-81; IJIRSET, 2013
Effect of Fly Ash and RBI Grade-81 on Swelling Characteristics of Clayey Soil; IJATCE, 2013
Effect of Industrial Waste & RBI Grade-81 on Swelling Characteristics of Clayey Soil; FACTA
Universitatis, 2013
Toxicity Evaluation of the Soil Stabilizer RBI-81; CSIR, Cape Town, 2000
Effect of Addition of Lime on the Properties of RBI-81 Treated Expansive Soil Subgrade;
IOSR-JMCE, 2015
Effect of Soil Stabilizers on the Structural Design of Flexible Pavements; Pelagia Research
Library, 2015
Standardised Testing of RBI Grade-81 as a Road Material Stabilizer; CSIR, 2004
Effect of Pond Ash and RBI Grade-81 on Properties of Subgrade Soil and Base Course of
Flexible Pavement; World Academy of Science, Engineering & Technology, 2013
Scientific Studies on RBI Grade-81 (cont.)
Experimental Study on Strength Properties of Problematic Soils with RBI-81 Stabiliser;
IJCRE, 2014
Utilisation of Industrial Waste for Soil Stabilisation; International Conference on Advances in
Architechture & Civil Engineering, 2012
Development & Promotion of Clean Technology and Waste Minimisation Techniques; Clean
Technology Division, 2013
Highway Research Report No. 40; IRC Highway Research Board, 2013
Effect of RBI-81 on Properties of Black Cotton Soil; IJRDET, 2014
Using RBI Grade-81 A Comparative Study of Black Cotton Soil and Lateritic Soil;
IJRET, 2014
Improvement of Subgrade by RBI Grade-81 & Fly Ash; IRJET, 2015
A Review Paper on Improvement on Subgrade by RBI Grade-81 & Fly Ash; IRJET, 2015
Improvement of Subgrade by RBI Grade-81 & Pond Ash; IRJET, 2015
Test Report RBI Grade-81 as Soil Stabilizer; SABS, 2007
Scientific Studies on RBI Grade-81 (cont.)
Laboratory Performance of RBI 81 Stabilized Soil for Pavements; IJCER, 2014
Study on Stabilisation of Soil Using RBI Grade-81; IJRAE, 2015
Strengthening of Subgrade by Using RBI Grade-81 A Case Study; IOSR-JMCE, 2013
Chemical Stabilization of Black Cotton Soil for Sub-Grade Layer; IJSCER, 2014
Testing of RBI Grade-81 Filler; Institute for Transport Technology, University of Stellenbosch,
2005
Stabilization of Marginal Soil in New & Existing Right-of-Way; ALLU Group Inc., 2014
Study of Durability of Soil– RBI Grade 81 Mixtures for Application in Forest Roads and
Convencional Pavement Layers; Federal University of Vicosa, Brazil, 2005
Study on Strength Characteristics of Soil Using Soil Stabilizer RBI-81; IRJET, 2014
Stabilization of Blast Furnace Slag & Fly Ash Using Lime & RBI Grade-81;
NIT Rourkela, 2010
Effect of Soil Stabilizers on the Structural Design of Flexible Pavements; Thapar University,
2013
History
RBI Grade-81 Through the Ages
• RBI Grade-81 was developed by the South African Army in 1990s. It was
extensively used to construct all manner of roads.
• RBI Grade-81 was bought by Mr Josy Cohen from the SA Government, and
was further developed and optimized through continuous R&D.
• After 10 years of R&D South African patent was granted.
• It took number of years to introduce soil stabilisers in India through
numerous trials with RBI Grade-81.
• RBI Grade-81 is pioneer of Soil Stabilisation in India.
• Stabilig Road Solutions Pvt. Ltd. holds the exclusive license to manufacture
and market RBI Grade-81 in India.
Properties & Benefits of RBI Grade-81
A Cost Effective , Rapid-Deployment, Environmentally Friendly Pavement Material
Construction cost reduction by 05 – 20% (NH)
Construction time reduction by 25 – 30%
Significant increase in Pavement Strength (CBR &
UCS)
Transportation cost reduction by approx 30%
Enhanced Durability
Reduces Maintenance Cost
Surface becomes relatively impermeable
Properties & Benefits of RBI Grade-81
A Cost Effective , Rapid-Deployment, Environmentally Friendly Pavement Material
Saves construction material like Aggregate &
Good Soil.
Reduces the use of bitumen.
Saves non-renewable resources in construction
process.
Reduces Carbon Emission : resulting into carbon
credits.
Only Soil Stabiliser to be certified as Non-Toxic
11
Pavement Applications
RBI Grade-81 has a wide variety of uses
Highways & Expressways
City & State Roads
Rural Roads
Hill Roads, High Altitude Roads
Unpaved Roads
Forest Roads
Helipads, Airfields
Effectiveness of RBI Grade 81 with Different Types of
Indian Soils
( All results are with 4% RBI Grade 81)
Untreate CBR % UCS, kg/sqcm
Type
d (UT)
of CRR
Treated IITKgp IITR IITM RAASTA CRRI IITKgp IITR IITM RAASTA
Soil I
(T)
UT Clay 4 3 - 2 5 5 0 0 3
T with
Clay 25 18 - 22 42 15 19 14 14
RBI
UT Silt 8 - 13 - 10 4 - - 16
T with
Silt 98 - 114 - 32 32 - - 39
RBI
UT Sand 22 - - - 14 0.5 - - 5
T with
sand 53 - - - 143 7 - - 23
RBI
Grave
UT 30 - 90 - 34 3 5 -- 2.1
l
19*
T with Grave
197 - 361 - 180 26 35 - (6%
Effectiveness of RBI Grade 81 with Different Types
of Indian Soils
( All results are with 4% RBI Grade 81)
PI (Plasticity Index) (%) FSI (Free Swell Index) (%)
Untreate
Type
d (UT)
of
Treated Sample Sample Sample Sample Sample Sample Sample Sampl Sampl Sampl
Soil
(T) 1 2 3 4 5 1 2 e3 e4 e5
UT Clay 18 11.5 29 24.2 46.4 16.6 20 33 61.5 53.8
T with
RBI
Clay 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 - 9.1 8.3
T with
RBI
Silt 5.4 6 2.3 1 10.6 0 0 - 0.8 2.1
Crust Reduction as per IRC:37
Design Traffic : 150 MSA
Design CBR : 3%
Conventional Design Stabilized Pavement Design (RBI
Grade-81)
50 mm, BC 50 mm, BC
170 mm, DBM 50 mm, DBM
250 mm, WMM 32 % 230 mm, WMM
Savings
380 mm, GSB 250 mm,GSB
Total Thickness 850 mm Total Thickness 580 mm
16
Crust Reduction as per IRC:SP:72 (For Rural Road)
Design Traffic : T7 Category
Design CBR : 7%
Conventional Design Stabilized Pavement Design (RBI
Grade-81)
20 mm, PMC 20 mm, PMC
225 mm, WBM 150 mm, Stabilized Base
150 mm, GSB 33.33 % 100 mm, GSB
Savings
Total Thickness 375 mm Total Thickness250 mm
Construction Process
1. In-Situ Stabilization Process
2. Material Spreading
3. Grading & Profiling
4. Stabilization as per designed Combinations
5. Compaction
6. Curing
Construction Process
Leveling
Dumping
Construction Process
Spreading RBI Grade-81
Placing of Bags
Construction Process
Profiling
Mixing
Construction Process
•In-Situ mixing (with Stabilization Machine)
22
Construction Process
Production of RBI-81 & Aggregate Mix for Base Layer
Construction Process
Laying of Mix By WMM Paver on GSB Layer
Construction Process
Compaction
RBI Grade-81 in India
RBI Grade-81 has been used to complete projects in over 20 States in India,
covering Desert, Hilly, High Rainfall & Snow-Bound Areas
• Jammu & Srinagar • Arunachal Pradesh
• Rajasthan • West Bengal
• Uttar Pradesh • Uttarakhand
• Karnataka • Gujarat
• Tamil Nadu • Punjab
• Andhra Pradesh • Maharashtra
• Haryana • Himachal Pradesh
• Manipur • Orissa
• Mizoram • Tripura
• Meghalaya • Assam
Approval by
the Ministry
of Road
Transport &
Highways
Approval by NRRDA
Approval by
MES
A FEW PROJECTS COMPLETED
IN INDIA
Construction of Nyoma 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
Landing Marks at Nyoma Airfield
Performance
Certificate for
Runway at Nyoma
Airfield
Shoulder Stabilization of Runway
RBI Grade-81 in Shoulders (Phalodi, Rajasthan)
National Highway - 230
Madurai- Thondi Road, Tamil Nadu (NH-230)
• Tested by – NIT Trichy
• Design Vetted by – IIT Madras
• Length 30 Km (Mar-15)
National Highway - Tumkur, Karnataka (NH-206)
Strengthening of Existing Carriageway by Full Depth
Reclamation i.e. 100% use of existing road material
MOEF Project (May-12)
National Highway - 34, West Bengal
• Behrampur to Farakka (Pkg.3)
• West Bengal (Jan-15)
• Design Vetted by IIT Kharagpur
RBI Grade-81 in Expressway
• RBI Grade-81 in Express Highway (Bengaluru – Mysore)
• Design Traffic 150 MSA
• RBI Grade-81 used below PQC Layer
National Highway - 94, Uttarakhand
Emergency construction during cloud burst in Uttarakhand
National Highway - 58, Uttarakhand
Emergency construction during cloud burst in Uttarakhand
State Highway - 48, Chitradurg, Karnataka
Before After
State Highway - Kashipur-Thakurdwara, UK
• Traffic – 80 MSA
• 4 lane (Sep-13)
Rural Roads
UDUMALAIPETH, Tamil Nadu
Design Vetted by NIT Trichy
48
Rural Roads
• Construction Period: 2010
• Location: Davangere Taluk
Rural Roads
• Bemina - Durbal Rural Road, Srinagar
• Traffic 2 MSA, Tested by CRRI
50
Rural Roads
• CNN – Kolo Road, Hardoi
• Design Traffic ≤ 2 MSA (Apr-13)
• Tested By STA, UP RRDA
Rural Roads
• Bidar Bapur, Karnataka
• RBI Grade-81 as a base layer in Rigid Pavement (below CC layer)
52
Rural Roads
Ministry of environment and forest Rural Road Project
Before Construction After Construction
Major District Road
• Alamdar Road, J & K
• Excellent Performance in Snow Bound Area
54
RBI Grade-81 in Pathways/Walkways
55
RBI Grade-81 in Pathways/Walkways
56
Some International Applications
Heavy traffic paved road – Israel Secondary paved roads - Kenya Main road into city of Kigali - Rwanda
Access road to a construction site Access roads and drilling pad Township roads - South Africa
Israel Angola
Stabilig Road Solutions Pvt. Ltd.
The exclusive licensees for manufacturing & marketing RBI Grade-81 in India
• We are operating under the Make in India initiative.
• RBI Grade-81 has 10 years of existence in India with roads up to 8
years evaluated by CRRI (Durbal Hanjik & Chitradurga) & other
National research Institutes.
• All raw materials are 100% indigenous and locally sourced
• We undertake onsite training/supervision of contractors/engineers
for execution of RBI Grade-81 work.
Manufacturing Unit
A State-of-the-Art Manufacturing unit near Jaipur producing 1500 Metric
Tonnes of RBI Grade-81 per day.
Shortly two more plants are coming up in Andhra Pradesh & Jharkhand.
Thank You
Contact Number - 9205488511
STABILIG ROAD SOLUTIONS PVT LTD.
TELEPHONE: +91-124-2350460
G7A/11, DLF PHASE -1,
E-MAIL: brig.rana@stabiligindia.com
GURGAON – 122002, INDIA
WEBSITE: WWW.STABILIGINDIA.
