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Workers from Kiewit-McCarthy Joint Venture, Arizona Materials, Fleming and Sons Concrete Pumping and Valley Metro prepare to pour the last section of the northern spur extension of the Phoenix Valley Metro light rail line north of Dunlap Avenue on 25th Avenue on May 5. Photo by Charlie Leight/ASU NewsWorkers prepare to pour the last section of concrete for the northern spur of the light rail line north of Dunlap Avenue on 25th Avenue on May 5. The fiber-reinforced concrete mixture incorporates polypropylene or steel fibers, which are much less expensive and time-consuming than the traditional rebar reinforcement method. Professor Barzin Mobasher was able to use ASU’s Structural and Materials Lab to demonstrate that the structural viability of fiber-reinforced concrete exceeds the 45-year service life required.Thin fibers of steel and polypropylene are being used in in the concrete mixture for Phoenix Valley Metro’s light rail extension. Using the fibers instead of rebar cuts costs and construction time as well as decreasing the carbon footprint and increasing sustainability. Photo by Charlie Leight/ASU News
ASU Professor Barzin Mobasher, with Fulton Schools of Engineering’s School of Sustainable Engineering and the Built Environment, second from left, watches workers pour the last section of the northern spur of the Phoenix Valley Metro light rail extension. Photo by Charlie Leight/ASU NewsA construction worker pours premixed fibrous concrete for the last section of the northern spur of the Phoenix Valley Metro light rail line extension, Photo by Charlie Leight/ASU NewsWorkers from Arizona Materials spread fresh concrete over the last section of the northern spur Phoenix Metro Valley light rail line extension. Using FRC enhances worker safety because they don’t have to navigate stepping over rebar while they pour and spread the concrete. Photo by Charlie Leight/ASU News
