Topmix Permeable
A type of concrete that "drinks" water on its surface is being marketed to areas where flash flooding and puddles are a problem. The Topmix Permeable concrete by Tarmac can absorb 880 gallons of water in 60 sec, one sq area according to a recent article in the Daily Mail. The daily newspaper said the concrete solution works by having a permeable layer of concrete on the surface that allows the water to seep through large pebbles and into a loose base of rubble. WHAT IS TOP MIX PERMEABLE 10. Topmix can help rapidly remove water from roadways, preventing the potentially dangerous buildup of standing water. As it is absorbed, storm water is filtered through a porous layer of pebbles, removing petroleum hydrocarbons and other pollutants commonly found on roadways before the water is ultimately returned to the water table 11. During some periods this characteristic can aid in delaying the discharge of surface water into water courses or drainage systems reducing the risk of overwhelming systems and causing flash flooding.
Topmix permeable tarmac
A graphic showing how the system works is shown above The company also says the system could help prevent puddles on cycle paths and footpaths. However, in areas that suffer extreme cold, the concrete is likely to be damaged as the water beneath freezes and causes the surface above to buckle and crack. Tarmac said it had already installed the Topmix Permeable concrete in a car park in High Wycombe and on Worksop Golf Course. The concrete uses a large pebble size (pictured) to allow water to filter down through it into a loose aggregate layer below, which can hold the water and allow it to gradually filter into the soil beneath
You'll commonly see a similar application used under paving to help with drainage. Tarmac have, however, made some tweaks to the concept. Advances in compaction seem to be one of Tarmac's secrets. It's even able to withstand the constant wear and tear of vehicles. This makes it great as a top surface rather than under paving solution. Tarmac believe it is ideal for large areas like car parks where surface water accumulation can cause headaches. Pretty cool. We were sold at the video, to be honest. Tarmac may very well have changed the rules of the game in the paving market. It could very well be the answer to the seemingly increased likelihood of frequent flooding in our cities. Topmix permeable concrete might very well become the only application in urban areas in the future. Time will indeed tell. Sources: Tarmac, PerviousPavement, Quora SEE ALSO: This Revolutionary Technology Produces Eco-Friendly Concrete
How does topmix permeable concrete work? - Quora
Tarmac topmix permeable
• Full attenuation uses a capture system to store all the water that flows through Topmix. This option is most useful in areas with unclean water and high recycling rates, since the captured water can be reused later. 16. The technology isn't quite ready for wide-scale deployment. Tarmac notes that the permeable surface is prone to damage from freezing water and therefore not suitable for use in subzero temperatures. Furthermore, the product is not suitable for use on high- volume roadways that bear heavy loads, although it can be used on shoulder lanes, residential streets, pedestrian and bike paths and parking lots LIMITATIONS 17. "Being able to control and actively manage the drainage of rainwater from the developed landscape significantly reduces the risk of surface water flooding, protecting both the natural and built environment, " CONCLUSION 18. ANY QUERIES? 19. THANK YOU
These need to be integrated into the structural design of the paving solution. Tarmac is very proud of it Topmix permeable concrete can be used for many applications. But it's primarily intended for paving. Tarmac, confidently declare it could not only help tackle flash floodings in cities but also help reduce heating during hot weather. Nice a "double whammy". "Permeable concrete allows surface water to freely drain through the wearing surface to the underlying ground with the ability to act as a reservoir during periods of high downfall. " says Tarmac. "During these periods this characteristic can aid in delaying the discharge of surface water into water courses or drainage systems reducing the risk of overwhelming systems and causing flash flooding" Tarmac add. ''During periods of rising temperatures and intense rainfall, water stored within the system evaporates creating a cooling effect reducing surface temperatures. '' [Image Source: Tarmac] Nothing new The concept is nothing new.
Concrete is a composite material composed of aggregate bonded together with a fluid cement which hardens over time. Most use of the term "concrete" refers to Portland cement concrete or to concretes made with other hydraulic cements, such as cement. However, road surfaces are also a type of concrete, "asphaltic concrete", where the cement material is bitumen. CONCRETE 7. Pervious concrete is one of the best technique for storm water removal on pavements and parking lots The recent advancement in pervious concrete is "top mix permeable pavement" The top mix permeable concrete is also known as "TOP MIX PERMEABLE" It is a fast draining concrete pavement solution that rapidly directs storm water off-streets, parking surfaces. Advancements in pervious concrete 8. The building material company Tarmac has developed a new kind of concrete that is capable of absorbing up to 4, 000 liters (1057 gallons) of water in the first minute. On average, one square meter of this new road surface, called "Top mix Permeable, " can drain 600 liters (159 gallons) in a minute About TOP MIX PERMEABLE 9.
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Topmix permeable where does the water go
reaDYmIX concrete The ultimate concrete solution for surface and storm water management Topmix pErmEablE The built environment has grown rapidly over the last 50 years, resulting in large areas of land being paved over with impermeable materials. Over the same period of time the number of occasions that the UK experiences three, or more, consecutive days of heavy rainfall has increased by 50%. With climate change predicted to lead to increasingly warmer and wetter weather conditions, rainfall is likely to continue to rise. As a result, many experts believe the kind of wide-scale flooding seen in 2007 and the winter of 2013/14 will become ever more frequent, unless dramatic action is taken now. The impact of urbanisation Topmix Permeable from Lafarge TarmacLafarge Tarmacs Topmix Permeable can play a fundamental role in the majority of Sustainable Urban Drainage Systems (SuDS) designs, providing a practical, long-term answer to surface water flooding that can be implemented quickly and cost effectively.
It literally sucks, and really, really well as it turns out. Topmix permeable concrete, porous concrete, permeable concrete, no-fines concrete, gap-graded concrete, and enhanced-porosity concrete, whatever you wish to call it is impressive stuff. I can't count the number of conservations that inevitably end up musing about concrete. OK, we can, none, but we can but dream. That would quickly change if we were to ask them a cheeky riddle. "What has an insatiable thirst and can only drink on the floor? " OK, we made that one up, sorry it's pretty "wet". Wink, wink, ok we'll stop. Yes, Topmix permeable concrete of course! Oh, how they would "roll in the aisles". Strange fantasy aside, this is actually a very interesting material. In the following article, we'll take a quick look at this "miracle" concrete. Brace yourself! Over the last 50 years, our cities have grown exponentially. Large areas of land are being concreted over, usually with impermeable materials. Heavy rainfall over consecutive days has also gradually increased over time.
