Chennai’s Roads Set for a Transformation
The Greater Chennai Corporation (GCC) has announced a bold initiative to tackle the city’s persistent pothole problem, aiming for pothole-free roads within the next six months. This commitment comes in response to numerous complaints from residents about the deteriorating road conditions, aggrevated by the recent heavy monsoon rains.
Mobile Jet Patchwork Machines
A key component of the GCC’s strategy is the acquisition of 15 mobile jet patchwork machines. These state-of-the-art machines will be deployed across the city, focusing on bus routes and interior roads. GCC officials have indicated that these machines will eventually become mandatory for all road contractors, ensuring a consistent and high-quality approach to road repair. This move reflects a commitment to modernizing road maintenance practices and improving efficiency.
Adapting to Chennai’s Needs
The GCC’s initiative follows a successful trial of a similar “pothole tar patching machine” in Kochi. While the Kochi machine cost ₹1.76 crore, GCC engineers have opted for a more cost-effective solution, estimating the cost of their machines at around ₹50 lakh each. This demonstrates a focus on fiscal responsibility while still investing in effective technology.
Addressing the Pothole Hotspots
Recent heavy rainfall has taken a toll on Chennai’s roads, leading to a surge in pothole complaints. Areas like Velan Nagar, NSC Bose Road, Kondithope, and George Town have been particularly affected. The GCC has identified 2,076 potholes requiring immediate attention, with Anna Nagar and Valasaravakkam topping the list. Key roads in Royapuram, Anna Nagar, and Perungudi will be prioritized for relaying after the next rains, with completion targeted for February. Subways, prone to water damage, will be reinforced using grouting techniques.
Tenders, Timelines, and Technology
The GCC’s plan involves a multi-pronged approach. Tenders have been issued for pothole repairs using the new machines, with an estimated project value of ₹49 lakh per zone and a three-month contract completion timeline. Until all 15 machines are deployed, two machines per zone will be utilized. Each machine boasts the capability to repair a pothole in just 20 minutes, significantly reducing repair time.
The Repair Process: Cold Mix Injection
The repair process will utilize a cold mix injection technique. This involves marking the pothole, cleaning it with high-volume blowers, applying a tack coat of emulsion, filling it with grouting aggregates, and finally compacting the surface with mini ride-on rollers. This method ensures a durable and smooth finish.