• Physicists predict when brittle materials fail

    It does not happen often, but structures like bridges, airplanes, and buildings do fail, sometimes catastrophically; what are the odds, and how can it be prevented? Researchers just published new theoretical insights into the probability of structural failures, based on hundreds of thousands of computer simulations

  • Recycled glass in cement makes concrete stronger

    Researchers have found that by mixing ground waste glass into the cement that is used to make concrete, the concrete is stronger, more durable, and more resistant to water; in addition, the use of glass helps reduce the amount of glass that ends up in landfills

  • Shape-memory alloys for earthquake-resistant structures

    To improve the performance of structures during earthquakes, researchers have been investigating the use of “smart” materials, such as shape-memory alloys, which can bounce back after experiencing large loads

  • Smart paint monitors structural safety

    An innovative low-cost smart paint that can detect microscopic faults in wind turbines, mines, and bridges before structural damage occurs; the environmentally friendly paint uses nanotechnology to detect movement in large structures, and could shape the future of safety monitoring

    • view counter

  • Building earthquake-proof buildings

    Researchers in Australia are leading an international project to help identify buildings most vulnerable to earthquakes and the best ways to strengthen them

  • Improving pothole repairs

    The alarming increase in the number of road potholes in the United Kingdom — an outcome of reduced road maintenance, increasing traffic volumes, heavier loads, and repeated adverse weather — is creating potentially hazardous driving conditions, causing serious concerns to the authorities as well as to the public; engineers are looking foe ways to improve pothole repairs

    • view counter

  • Changing bridge fabrication and inspection practices

    As today’s engineers investigate the rebuilding of much of the nation’s infrastructure, a lot of which was constructed in the 1950s, they are using much improved materials and analysis tools; a Virginia Tech civil engineer predicts his new work on a fracture control plan for steel bridges promises to change bridge fabrication and inspection practices

  • Building design lessons from the Christchurch earthquake

    A leading infrastructure expert believes an assessment needs to be made of the level of “very rare” earthquake that needs to be considered in structural design, perhaps one with a 10,000 year return period or higher, rather than the 500 year return period that is commonly adopted for many buildings in Australia

  • Increasing durability, cutting cost of railroad maintenance

    Every year, companies that own railroad track across the United States spend millions of dollars maintaining ballast, the crushed rock underneath railroad ties and steel rails; in addition to the high cost, railroads must reroute trains around operations that maintain ballast, delaying the delivery of freight; researchers offer a solution

  • Engineering lessons of Fukushima

    Many engineers and scientists are still examining what happened at Fukushima during the earthqyake and tsunami of 11 March; one group, a Tsunami Loads-and-Effects Subcommittee sponsored by the American Society of Civil Engineers (ASCE), is preparing to publish early next year an approximately 350-page report

  • Self-repairing composites repair cracks in coating of buildings, bridges

    Researchers have developed vascularized structural composites, creating materials that are lightweight and strong with potential for self-healing, self-cooling, metamaterials, and more; these artificial microvascular systems can self-repair of materials damage, such as cracks in a coating applied to a building or bridge

  • Why the Twin Towers collapsed: new theory

    Materials scientist says that a mixture of water from sprinkler systems and molten aluminum from melted aircraft hulls created explosions that led to the collapse of the Twin Towers on 9/11

  • Speeding skyscraper construction -- and making them stronger

    Researchers are working on a new technique that could speed construction of skyscrapers while also providing enough stiffness and strength to withstand earthquakes and forces from high winds

  • Building codes may underestimate multiple hazard risks

    Current building codes consider natural hazards individually — if earthquakes rank as the top threat in a particular area, local codes require buildings to withstand a specified seismic load; if hurricanes or tornadoes are the chief hazard, homes and buildings must be designed to resist loads up to an established maximum wind speed; engineers say that building codes should address multiple hazard scenarios

  • 9/11 legacy: more resilient skyscrapers

    Following the 9/11 attacks on the Twin Towers in New York, many predicted that the age of the skyscraper was over; there has been no slowdown in skyscraper orders, however — but the skyscrapers being built today are much stronger than the Twin Towers were; new materials, innovative designs, and attention to safety make today’s skyscraper much more resilient to man-made and natural disasters