Dahanu, Maharashtra | Pradhan Mantri Gram Sadak Yogana (PMGSY) by Maharashtra Rural Roadsdevelopment Association (MMRDA) under Konkan Region, Thane, Maharshtra
The road located from State Highway SH-30 to Sarawali – Naikepada – Patilpada, Taluka Dahanu, was 5 years old & was constructed under the government scheme “Pradhan Mantri Gram Sadak Yojana”. The surface of the road had undergone wear & tear and client wanted to restore the surface with minimal maintenance cost.
The existing bituminous surface had undergone wear & tear due to temperature variations, traffic loads, age hardening, braking & turning of vehicles etc. over it. The client thereby wanted an innovative method to increase the life of the overlay and reduce the overall maintenance cost of the same.
Techfab (India) Industries Ltd. suggested the use of TechGlass 50 for the reinforcement of the existing bituminous surface. TechGlass 50 provided manifold advantages such as prevent propagation of reflective cracking, prevent wear & tear; increase overall life, high tensile strength, low elongation, good compatibility with asphalt etc.
The existing bituminous surface was cleaned & made free from dust, debris & any obstacles. Tack coat of 60/70 type was sprayed over the cleaned surface. TechGlass 50 was unrolled manually over the sprayed tack coat with no wrinkles over the surface. Wearing course of 20mm thick carpet was laid over the TechGlass 50, to achieve the final prepared surface.
The road condition after 12 months (including monsoon) was in good condition. Looking at satisfactory performance, TechGlass is now incorporated in PMGSY, Schedule of Rates for renewal of roads and asphalt overlay reinforcement.
Wear and tear from temperature variations.
Damage due to traffic loads, braking, and turning of vehicles.
Age hardening of the bituminous layer.
Risk of reflective cracking and reduced service life of overlays.
The use of TechGlass 50 Glassgrid, a reinforcement material for bituminous overlays, was recommended. It was installed between the existing surface and the new overlay to enhance durability and performance.
Prevents propagation of reflective cracking.
Reduces wear and tear of the overlay.
Increases overall service life of the pavement.
Provides high tensile strength with low elongation.
Ensures good compatibility with asphalt.
The existing surface was cleaned of dust and debris.
A tack coat of 60/70 grade bitumen was sprayed.
TechGlass 50 was manually unrolled without wrinkles.
A 20 mm thick wearing course was laid over it to complete the surface.
After 12 months of service (including monsoon), the road remained in good condition. The performance was satisfactory, leading to TechGlass being incorporated into PMGSY’s Schedule of Rates for road renewal and asphalt overlay reinforcement.
The project utilized TechGlass 50 Glassgrid supplied by TechFab India Industries Ltd.
