In 1991, Minnesota mixed factory-made shingle scrap into Highway 25 near Mayer; by late 1995, the asphalt performed at least as well as control sectionsEngineers in Minnesota have investigated the potential of recycled asphalt shingles for road construction to mitigate landfill waste. Their...
In 1994, Georgia mixed damaged factory roofing shingles into Chatham Parkway asphalt; later checks found the recycled road performing as well as its controlEvery year, millions of tons of asphalt shingles end up in landfills, presenting significant waste management issues. The Georgia Departmen...
Sarawak uses nearly 400 kg of plastic waste to build its first green asphalt roadSarawak has built a 100-metre green asphalt road at the CENTEXS Lawas campus using nearly 400 kg of plastic waste collected across Malaysia...
In 1979, Minnesota began mixing ground-up scrap tires into two asphalt test roads; years later, FHWA said both experimental sections were still performing wellIn Minnesota, a trial was conducted to explore the use of recycled tire rubber for enhancing roadway performance in winter. Utilizing PlusR...
In 1987, Kentucky put 40% power-plant bottom ash into 1 mile of State Route 3; later testing found excellent performance and strong skid resistance on the roadEngineers in Kentucky embarked on a pioneering project to incorporate bottom ash from coal-fired power plants into asphalt mixtures. Their ...
In 2019, a South African town opened Africa's first plastic road, the 300-metre stretch contains 700 kg of recycled plasticThe road was constructed using a special process in which waste plastic was converted into pellets before being added to the asphalt mixtur...
Bengaluru man jokes how potholes can peel boiled eggs during auto rides. His witty dig gets a hilarious response. ‘Same can be applied to rice and curry.’Bengaluru faces significant pothole issues that worsen during rainy conditions. Commuters experience frequent bumps that can inadvertently ...
Newark airport used coal waste in runways built for jumbo jets: What FHWA found 20 years laterA 1970s pavement project at Newark International Airport in New Jersey used coal fly ash, lime, Portland cement and sand to create a stabil...
In 2019, South Africa put 700 kg of waste plastic into a 300-metre road; Jeffreys Bay turned discarded packaging into its asphalt surfaceIn 2019, South Africa put 700 kg of waste plastic into a 300-metre road; Jeffreys Bay turned discarded packaging into its asphalt surface. ...
In 2023, an Australian city put 76,000 recycled bottles into its roads; 25 tonnes of crushed glass replaced virgin sand in a major resurfacing trialRecycled glass roads Australia: Latrobe City Council in Traralgon, Victoria, trialed recycled glass in road resurfacing. Over 76,000 bottle...
In 2018, Tasmania built a road using 530,000 plastic bags, 168,000 glass bottles and 12,500 printer cartridges; engineers expected it to last 15% longerWhat if the road beneath your feet was made partly from the rubbish you threw away? In Tasmania, that idea became real in 2018. Engineers b...
In 2018, Melbourne put 200,000 plastic bags, 63,000 glass bottles and 4,500 used printer cartridges into a road; 250 tonnes of recycled asphalt showed 60% better fatigue resistanceIn 2018, Melbourne tested a road with an unusual ingredient list: 200,000 plastic bags, 63,000 glass bottles and 4,500 used printer cartrid...
In 2020, California repaved a highway using recycled materials, including 150,000 plastic bottles per mile; it could last 2-3 times longer than conventional asphaltCalifornia transportation officials tested recycled pavement using plastic bottle binder. This pilot project on Highway 162 consumed approx...
In 1990, New York City began recycling waste glass into street pavement. 5 years later, the city had reused 250,000 tons of glass in resurfacing projects across the cityNew York City pioneered waste glass use in road construction between 1990 and 1995. Research examined crushed glass as an asphalt aggregate...
Los Angeles recycled old street asphalt with microwaves instead of buying virgin paving material; over 800,000 tons were avoided over 5 years, saving approximately $8 millionLos Angeles has pioneered a groundbreaking method for recycling old asphalt pavement through microwave technology. This inventive technique...
In 2024, Michigan Tech mixed 6% treated waste glass into asphalt; dynamic stability rose 42.3%, and anti-skid performance improved 38.6% over standard mixesResearchers at Michigan Technological University have discovered an innovative way to utilize waste glass in paving roads. Their findings r...
In 2011, Colorado reused 134,000 tons of old asphalt in highway mixes; CDOT estimated the recycled material saved the state about $1.6 millionColorado's innovative approach to roadway construction has resulted in significant savings, repurposing old asphalt in new projects. By emb...