Weekly Poll (12)


Researchers are calling for a “paradigm change” in forecasting corrosion damage within reinforced concrete structures using the chloride threshold concept. Do you believe that this prediction method should be replaced?


When coating concrete, what is the biggest challenge you come across?


The Cool Pavement Pilot Program’s results show that cool pavements have an average surface temperature of 10.5 to 12 degrees Fahrenheit lower than traditional asphalt at noon and during afternoon hours. Given the increase in research concerning how various cities’ streets affect radiant heat, do you believe this result shows enough of a temperature difference for cool pavement research to be adapted state-wide?


In an attempt to reduce its carbon footprint, the U.K. recently announced that it will be using 3D-printed concrete for its new high-speed rail system. The 3D-printed concrete, made with a unique strengthening internal structure, is slated for testing. Do you believe this is a viable replacement for traditional concrete?


Researchers at Visvesvaraya National Institute of Technology have reportedly developed a new technique for strengthening and healing concrete: this time, by utilizing watermelon seeds. Do you think the biocementation could prove beneficial to the industry?


In October, the National Institute of Standards and Technology awarded the University of Connecticut $768,000 in federal funding for the continued research on premature degradation of concrete foundations containing pyrrhotite. Do you think the grant will help UConn develop a reliable and efficient way of testing the corrosive mineral?


Recently, two court-mandated engineering reports found that an 18-foot-high section of the border wall in Mission, Texas, was at risk of failure should the structure endure a “high flow event” from the nearby Rio Grande River. To mediate the structure’s current erosion and concrete cracking, nonprofit Fisher Sand and Gravel plans to conduct increased inspections, plant grasses and add a layer of rocks. Do you think the plan will work to resolve the issues?


The United States Geological Survey released last month its first map of where the mineral pyrrhotite could occur in the nation. Pyrrhotite is a mineral that consists of iron and sulfur. When exposed to water and air, it can break down to form secondary minerals that expand and crack concrete, causing concrete structures to fail. Do you think the map will benefit future residential construction efforts?


A report on issues at a Texas football stadium has found that cracks in the concrete slabs occurred because of excessive water, a result of re-tempering the initial concrete mixture. Is there ever a time when this practice is appropriate?


How often do you work with coatings for concrete?


Recent research indicates that paraffin wax may be key to creating concrete roadways that deice themselves. Will developments like this eventually lead to the elimination of road salts?


Recycled concrete is often used in nonstructural applications like highways and sidewalks. Do you think it is likely to find a place in buildings and bridges?


 
 
   

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