Gadgetory

mechanical concrete a few years ago American civil engineer Samuel benazzo came up with a fundamentally new road construction technology in 2016 the American Society of Civil Engineers recognized it as the most environmentally friendly construction method and here's why the problem of tire recycling in the modern world is very serious annually every major city produces about 90,000 and tons of worn-out tires besides each of them decomposes in the ground for more than a hundred years mankind is constantly searching for solutions to give warn size the second life and prevent environmental pollution mechanical concrete is one of them geogrid is widely used in road construction usually it's a 2-dimensional or 3-dimensional honeycomb structure filled with the loose materials such as crushed stone geogrid increases the bearing capacity of loose and has Virginia's soils securing road bases the technology of mechanical concrete's implies the use of worn-out car tires instead of geogrids they're placed on the prepared soil tightly against each other then they are fastened together Builders fill each tire cavity with crushed stone and then lay asphalt on top it's noteworthy that approximately 15 tires are used for one cubic meter of mechanical concrete the resulting design is inexpensive this technology uses 50 percent less building materials compared to traditional methods the cost of maintenance is also reduced as the coating has increased strength and durability the road can withstand loads of up to a hundred and fifty tons per square meter road markings renewal recently more and more often thermoplastic materials have been used to create road markings it allows finishing the task in a short time as a result the road has increased performance characteristics in its raw form thermoplastic looks like a powder it's usually brought in huge bags the material gets turned into liquid under the influence of high temperatures about 130 to 150 degrees Celsius therefore neither primary marking nor its updating is possible without the use of special equipment in this case as it is necessary to prepare only a small parts of the road the workers use special devices with manual control the constructor passes along the pedestrian path updates the turn and stop signs and some others the advantage of using this material when renewing the road markings is its durability even if the road is subjected to heavy traffic loads the updated signs will last for at least two years in addition thermoplastic dries much faster than conventional paint once the material has cooled down the road can be used again other features of thermoplastic for marking include resistance to abrasion or chemical reagents and high grip index soil stabilization roads are not always paved where the soil has ideal characteristics for example in quarries heavy trucks often drive on soil with low load bearing capacity on large construction sites it also often has poor quality characteristics it is not possible to replace it with any other soil however there is a way to compact the soil and make it usable for this special binders and additives are used they can have various compositions the coating you see on the screen will not produce dust after drying even the wheels of large cars won't get stuck in the soil notice that the workers treat slopes with a composition at the edge of the road this is necessary to stop the erosion process in other words the treatment doesn't allow the rock to collapse so that debris and stones won't fall onto the road such stabilization of the soil leaves behind a proper usable Road stabilization geogrid at the beginning of the video we have already told you briefly was a geogrid is and what it's for it's time to focus on this road construction technology in more detail because it has a lot of advantages the video shows the DuPont surface stabilization geogrid it's a revolutionary solution for parking lots driveways and walkways the grid has a three-dimensional structure when unfolded it looks like a honeycomb the materials made of a hundred percent polypropylene so that the grid doesn't rot in the ground when it's not exposed to sunlight it can last for up to 25 years some of the advantages of the material are its light weight compactness when folded and water resistance the use of geo grids reduces the risk of flooding as it retains rainwater during heavy rainfall the finish coating has a higher density suit neither wheels nor legs will get stuck in the crushed stone if DuPont geogrid is placed underneath it heated asphalt countries with cold climates allocate huge sums of money each year to snow removal still nature is not easy to cope with many people constantly have to deal with snow and ice a few years ago in Japan heated roads were tested for the first time in the process of construction under the top asphalt layer a special grid with a heating element is laid it's noteworthy that the technology is very similar to the process of laying a piece of flooring in an apartment after the first winter people realize that the asphalt heating is very beneficial the surface temperature is above 0 degrees Celsius therefore the snow after kissing the asphalt not immediately snowdrifts simply don't have time to form thanks to the fact that the asphalt is heated evenly and round-the-clock the water on the surface does not freeze therefore there is no ice formation other countries decided to follow the example of Japan Zoo today heated asphalt can be found in different cities across Canada USA Finland Norway and Iceland it's interesting that in Iceland the asphalt is heated not by electricity but by geothermal meters plastic slaps over the past 65 years plastics production is increased by about 190 times only last year about 380 million tons of plastic were produced statistics show that mankind recycles only 9% of the total plastic waste another 12 percent is burned the rest goes to landfills in the ocean over the past 10 years people have begun to better understands the problem of plastic pollution that is why new ways of fighting it's are being created last year a mass campaign to promote Road slaps was launched in the West African country of Ghana unusual ones of course recycled plastic waste was used for their production the lifetime of the boards you see on the screen is 500 years only after that time did they finally begin to decompose at the same time the cost of the slabs doesn't exceed $1 this is 50 cents cheaper than traditional concrete slabs