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

Test Results - CRRI Research In India- CRRI Test Results

Im provem ent in ITS (Pondicherry Soil)

160 140 120 100 80 60 40 86 20 0 untreated 114 137

Improvement in Soak CBR Lab (Pondicherry Soil)

16 14 12 10 4 2 8 6 4.19

0 Untreated 2 10.3

Curing in Weeks

4 14 2

Curing in w eeks

3 40000 35000 30000 25000 20000 15000 10000 5000 0 8076 Untreated

Im provem ent in Fatigue Life

2 17851

Curing in w eeks

4 32325 4 35065 7 146

Test Results – University of Bangalore Research In India- College of Engg Trivandrum

Fig 16. Change of CBR over tim e for various sam ples

50 45 40 35 30 25 20 15 10 5 0 Sample w eek 0 w eek 1 w eek 2

Tim e

w eek 4 w eek 6 w eek 8 Sample 1 Sample 2 Sample 3 Sample 4 Sample 5

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 Paving The 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

Application Procedure – Step 1

Scarifying and pulverizing the soil surface.

Application Procedure – Step 2

Calculating the quantity of enzymes.

Application Procedure – Step 3

Adding enzymes to the water tank.

Application Procedure – Step 4

Spraying enzymes into the soil.

Application Procedure – Step 5

Mixing soil, metal and enzymes

Application Procedure – Step 6

Levels and Camber.

Application Procedure – Step 7

Rolling the treated surface

Application Procedure – Step 8

Finished road in use

National Highway – 66 , Tamil Nadu A Case Study Close up view of the Road.

The Road presently caters to 1,300 commercial vehicles / day.

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.