Rain and water-logging has become synonymous for Mumbai in recent years. On Thursday, Mumbai and other west coastal regions saw heavy rainfall as predicted by Indian Meteorological Department (IMD). On first heavy rainfall itself, various parts of Mumbai flooded as they have been for past few years. Certainly it is not because of one particular reason. It is the results of so many things coming into place together, right from old drainage system, unplanned structures, garbage issues. So where the city of dream is leading to? What are the steps that needs to be taken to avoid this in future?
Lafarge Tarmac, a UK-based building materials company has developed a new type of concrete which has the absorbing capacity of 4000 liters of water in a minute. This magic cement is called as “Topmix Permeable”. The company described this cement as – “A fast draining concrete pavement solution that rapidly directs storm-water off streets, parking surfaces, driveways and walkways. This minimizes the cost and long-term maintenance for local authorities and developers of storm-water management”. Topmix Permeable is a layer that would be laid upon the base of the road. Water will permeate through the the layer to the base where it can be filtered or recycled through use of pipes. Tarmac official website explains the working of this layer in detail.
It not only reduces water-logging but also helps in reduce heating in hot weather by checking the formation of puddles. “During periods of rising temperatures and intense rainfall, water stored within the system evaporates creating a cooling effect reducing surface temperatures”, Tarmac said in a statement.
However, the system may be damaged in freezing temperature. That surely won’t be an issue in Mumbai where lowest temperature was 7.7 Degree Celsius in 1962. This system should be worth giving a thought.