Ahmedabad: Our uncontrolled development and construction activities, without respecting city contours, have led many parts of Ahmedabad – more than 55 spots – susceptible to severe puddles during extreme rain events.
New experiments for using concrete or porous sponges are done at Nirma University.
This experiment was published in Elsevier Journal recently and shared by The Roads and Building Department Engineers at Ahmedabad Municipal Corporation (AMC).
“The porous nature of the previous concrete sidewalks (PCP) acts as a drainage pipe and water accumulates on the road or sidewalk immediately comes out,” Study Claims Performed by the Nirma University Department of Civil Engineering.
In the Nirma University campus, a small PCP 3MX10M expanse as built and curated for 28 days.
Moration wells are also built next to this porous sidewalk.
“In the case of porous pavement properties from concrete concrete (PC) such as Void ratio, press strength, permeability and density evaluated,” Claims Tejas Joshi and Urmil Dave from the Institute of Technology, Nirma University.
After the site was prepared, the researchers tested the efficacy of porous sidewalks by first pouring 5,000 liters and then 10,000 liters of water on the site.
Water is filtered through the surface in 10 minutes.
The researchers found that 40% to 45% of water could be collected from the sidewalk in the percolation well, built on the side of the porous sidewalk.
The construction method involved first digs 0.6 meters below the surface and then puts a coating of 0.15 M aggregate 40mm rough.
On top of this placed a hollow pipe system with a slight slope to collect storm water to the closest percolation well.
The pipe system is then topped with another layer of 40mm rough aggregate, then another layer of 0.15 million 20mm rough aggregate is placed and flattened.
After the level reaches the porous concrete poured and level.