conventional method of road construction the use of gsb – solling, sgmix, etc., the use of...
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Conventional Method of Road Construction
• The use of GSB – Solling, SGMIX, etc.,
• The use of different graded blue metal – WBM, WMM.
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Conventional Method of Road Problems
• High Cost due to decrease in the construction materials suitable for the road construction
• Low life cycle – Flexible pavement• High Maintenance Cost• Damages like rut, potholes, erosion, wash
boarding• Needs surface treatment
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TerraZyme – A bio enzymatic soil stabiliser
• TerraZyme, manufactured by Nature Plus Inc – U.S is an excellent replacement for metalling and solling.
• TerraZyme is a liquid extract from sugar molasses that improves the engineering qualities of the soil like CBR values and density and decreases the OMC, plasticity index of soil.
• TerraZyme is manufactured by Nature Plus Inc, USA under ISO – 9002 certification
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Benefits of using TerraZyme
• Cuts construction cost by 10%-40%• Higher CBR value / higher road strength: TerraZyme
base structures have a much higher CBR value. • Lowers the maintenance cost by 30-50%.• Saves construction time by 50% • The life-cycle of TerraZyme treated roads increase by
200–300%.• Pavement thickness is reduced by 30-50%, being semi
rigid in nature.• Environment friendly and bio-degradable product.
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Indian Accreditations
• PWD Maharashtra• DRDA Sundergarh• NH 66 – Chennai Circle• NH 4A – Goa• Wipro• Orchid Health Care• Sobha Developers• Mantri Group• Semac Consultants
• CRRI• Bangalore University• Anna University• IIT Chennai• Shanmuga College of Engineering
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Research In India- CRRI Test Results
Improvement in Soak CBR Lab (Pondicherry Soil)
14
10.3
4.19
0
2
4
6
8
10
12
14
16
Untreated 2 4Curing in Weeks
CBR
%
Improvement in ITS (Pondicherry Soil)
146
137
114
86
0
20
40
6080
100
120
140
160
untreated 2 3 4Curing in weeks
ITS
in K
Pa
Improvement in Fatigue Life
35065
32325
17851
80760
500010000
1500020000
25000
3000035000
40000
Untreated 2 4 7Curing in weeks
No
. of
rep
eti
tive
cy
cle
s
Test Results - CRRI
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Research In India- College of Engg Trivandrum
Fig 16. Change of CBR over time for various samples
0
5
10
15
20
25
30
35
40
45
50
Sample w eek 0 w eek 1 w eek 2 w eek 4 w eek 6 w eek 8
Time
CB
R (
%)
Sample 1
Sample 2
Sample 3
Sample 4
Sample 5
Test Results – University of Bangalore
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Roads Constructed using TerraZyme - India
Industrial Roads – Asahi Ltd
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Roads Constructed using TerraZyme - India
Residential Roads – Mantri Group
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Roads Constructed using TerraZyme - India
Residential Roads – Mantri Group
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Roads Constructed using TerraZyme - India
Rural Road – Panvel, After one Monsoon without Asphalting
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Roads Constructed using TerraZyme - India
Rural Road – After PavingThe road has undergone 4 monsoons
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Roads Constructed using TerraZyme - India
Rural Road – D.R.D.A, Sundergarh
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Roads Constructed using TerraZyme - India
Rural Road – D.R.D.A, Sundergarh, After One Monsoon
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Roads Constructed using TerraZyme - India
Performance of Road during rains – NH-66
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Roads Constructed using TerraZyme - India
NH 4A – Goa N.H.
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Roads Constructed using TerraZyme - India
Industrial Roads – Schwing Stetter
Treated Surface With Concrete Top
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Roads Constructed using TerraZyme - India
Industrial Roads – Reitzel India
Treated Surface With Concrete top
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International Accreditations
• Pennsylvania Highway Department• Canada PWD• Brazil Highway• PORIM• Thailand• Congo• Mexico• Japan
• World Bank• USAID• Brigham Young University• Columbia University
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Roads Constructed using TerraZyme - World
World Bank Project State Highway - USA
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Roads Constructed using TerraZyme - World
China Indonesia
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Roads Constructed using TerraZyme - World
Pennslyvania - USA Japan
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Roads Constructed using TerraZyme - World
Azerbaijan Brazil
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Roads Constructed using TerraZyme - World
Road behavior during flooding
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Scarifying and pulverizing the soil surface.
Application Procedure – Step 1
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Calculating the quantity of enzymes.
Application Procedure – Step 2
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Adding enzymes to the water tank.
Application Procedure – Step 3
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Spraying enzymes into the soil.
Application Procedure – Step 4
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Mixing soil, metal and enzymes
Application Procedure – Step 5
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Levels and Camber.
Application Procedure – Step 6
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Rolling the treated surface
Application Procedure – Step 7
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Finished road in use
Application Procedure – Step 8
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Close up view of the Road. The Road presently caters to 1,300 commercial vehicles / day.
National Highway – 66 , Tamil NaduA Case Study
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Comparison between Conventional and TerraZyme treated road.
TerraZyme treated road without Asphalt.
Conventional road with Asphalt.
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Economic Benefits of using TerraZyme
• The road construction was cheaper by 30%
• The road was used for one year with heavy traffic without any black topping.
• The use of TerraZyme gives the opportunity to the government agencies to plan diversion roads without any black topping
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Conclusion
• Roads, constructed using TerraZyme are Cheaper
• The life cycle of structures built using TerraZyme is increased
• Maintenance cost are reduced due to higher strength and stiffness achieved by using TerraZyme.
• Structures are built in much quicker time using TerraZyme.