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Replace steel bars on the bridge with fiberglass
Writer:admin    Released:2018-08-31 17:16:23    Type:【L】【M】【S
After a large number of laboratory research, will become strong glass fiber composites (GFRP) for internal reinforcement concrete, a graduate student at the university of Miami is working with moss construction management using FRP reinforcement in the replacement of steel bridge deck, resist the deck corrosion problems in the future. To date, glass fiber reinforced plastic has proven to be an effective internal as alternative materials of steel, reinforced concrete structure due to its magnetic transparency, corrosion resistance, durability, high strength to weight ratio, and long life expectancy.Fiberglass is also about four times lighter than steel. Fiberglass bars, instead of standard reinforced concrete, are laid across the deck.The next step is to cast concrete.This will reduce the amount of labor required to complete the same task at the construction site.This also makes the use of FRP more advantageous than steel bridge engineering and may reduce the use of concrete in the future. Led by their consultants, the students installed two advanced monitoring systems in the concrete to monitor the real-time status of the bridge and connect directly to the reinforced fiberglass and steel rebar of the bridge deck and superstructure.The vibrating string strain gauge is designed to measure the strain of certain specific elements of steel or fiberglass in a bridge.The instrument consists of a steel wire stress connected to a stainless steel disc bonded by an epoxy resin to the steel bar.The purpose of the embedded strain gauge is to measure the strain with the compression between the steel wires by the vibration principle directly embedded in the concrete.
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