conventional method of road construction the use of gsb – solling, sgmix, etc., the use of...

Conventional Method of Road Construction

• The use of GSB – Solling, SGMIX, etc.,

• The use of different graded blue metal – WBM, WMM.

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

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

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.

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

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

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

Roads Constructed using TerraZyme - India

Industrial Roads – Asahi Ltd

Roads Constructed using TerraZyme - India

Residential Roads – Mantri Group

Roads Constructed using TerraZyme - India

Residential Roads – Mantri Group

Roads Constructed using TerraZyme - India

Rural Road – Panvel, After one Monsoon without Asphalting

Roads Constructed using TerraZyme - India

Rural Road – After PavingThe road has undergone 4 monsoons

Roads Constructed using TerraZyme - India

Rural Road – D.R.D.A, Sundergarh

Roads Constructed using TerraZyme - India

Rural Road – D.R.D.A, Sundergarh, After One Monsoon

Roads Constructed using TerraZyme - India

Performance of Road during rains – NH-66

Roads Constructed using TerraZyme - India

NH 4A – Goa N.H.

Roads Constructed using TerraZyme - India

Industrial Roads – Schwing Stetter

Treated Surface With Concrete Top

Roads Constructed using TerraZyme - India

Industrial Roads – Reitzel India

Treated Surface With Concrete top

International Accreditations

• Pennsylvania Highway Department• Canada PWD• Brazil Highway• PORIM• Thailand• Congo• Mexico• Japan

• World Bank• USAID• Brigham Young University• Columbia University

Roads Constructed using TerraZyme - World

World Bank Project State Highway - USA

Roads Constructed using TerraZyme - World

China Indonesia

Roads Constructed using TerraZyme - World

Pennslyvania - USA Japan

Roads Constructed using TerraZyme - World

Azerbaijan Brazil

Roads Constructed using TerraZyme - World

Road behavior during flooding

Scarifying and pulverizing the soil surface.

Application Procedure – Step 1

Calculating the quantity of enzymes.

Application Procedure – Step 2

Adding enzymes to the water tank.

Application Procedure – Step 3

Spraying enzymes into the soil.

Application Procedure – Step 4

Mixing soil, metal and enzymes

Application Procedure – Step 5

Levels and Camber.

Application Procedure – Step 6

Rolling the treated surface

Application Procedure – Step 7

Finished road in use

Application Procedure – Step 8

Close up view of the Road. The Road presently caters to 1,300 commercial vehicles / day.

National Highway – 66 , Tamil NaduA Case Study

Comparison between Conventional and TerraZyme treated road.

TerraZyme treated road without Asphalt.

Conventional road with Asphalt.

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

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.