The key to achieve strong, durable concrete rests with the correct ratio for mixing cement and water. In the process, there are many methods employed for concrete curing, and one of them is using gunny bags and sprinkling water. However, this method ends up consuming a lot of water, and is also labour-intensive, as the curing requires round-the-clock monitoring or the effort goes down the drain.
An Ahmedabad-based start-up—Cure It—has provided a solution to this. The company has come up with an innovative drip curing method, whereby limited amount of water is dripped slowly at a regular pace. Importantly, this method can save up to 80 per cent of water. With this method—which is inspired from drip irrigation system used in the agricultural sector—the flow of water is controlled and only the required amount of water gets sprinkled.
How the method works
The method includes multi-layered sheets comprising of water pockets, gunny bags (made from jute) and PVC (polyvinyl chloride) films that are tightly bound to each other. Through the PVC film, only the required water trickles down the concrete, while the jute in the sheet helps in maintaining the cool temperature. The sheets can be easily attached to the concrete surface using binding wires or belts.
Meanwhile, through this method, one can fill the pockets once every 24 hours. The process is carried forward throughout the day with the water being dripped down through the film. A cubic meter of concrete column requires about 20 litres of water through this method, which equals one bucket and takes only half a minute to fill, compared to the 1,000-litre tank.
Once filled with water, these pockets automatically start with their curing action on concrete. Since the amount of water that is dripped is optimal for curing, the quality and strength of concrete stays perfect.
What’s more! This method can also save electricity five times than conventional method whereby electricity is required to pump the water. The method also allows for re-usability, multiple times through the sheets, unlike the gunny bags that go out of service after a month in use.