Water absorbing concrete can be the solution for the parts of the world that are prone to flooding.
Tarmac, a UK building materials and solutions company created a little something called Topmix Permeable concrete. It can absorb about 880 gallons of water every minute. To put that into perspective, regular concrete has to have the permeance of letting through a minimum of 300 millimetres of water an hour but this stuff disappears almost as soon as it hits the ground, like a sponge!
Here is how this magical water absorbing concrete works!
Traditional concrete is sand-based, but Tarmac uses no-fines concrete. The formula consists of a very dry, crushed, loosely packed granite which allows the water to pass through.
The three different designs and drainage systems that cities can choose between are:
Full infiltration is a system where all the water that passes through Topmix flows into the soil beneath it. This can be suitable for wet areas and climates prone to heavy rainfall where the collection of rainwater isn’t necessary or vital.
Partial infiltration uses a semi-permeable barrier beneath Topmix to drain the water through to local waterways and sewers.
Full attenuation is a system that collects the water to be recycled and used later. This can be a life changing option for areas with unsanitary water, since it can later be used for drinking water, irrigation, swimming pools and various other purposes.
The only downside to Topmix is its inability to withstand extremely cold weather conditions. The system could be compromised and destroyed if the water seeping through freezes, so installation is discouraged from areas where temperatures tend to fall drastically.
In a world where natural disasters are becoming more and more prevalent, water absorbing concrete could be the new face of change in helping flood-prone areas.
Feel free to contact Richmond Blacktop if you have any questions regarding your next project. We can provide a free estimate, and meet with you to discuss all of the best, most cost efficient options for your property.