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Is the concrete electrically conductive and does this lead to a risk of electrical shock?

Is the concrete electrically conductive and does this lead to a risk of electrical shock?
Update Time:2018-01-23
Typical steel fiber reinforced concrete contains less than 0.5% vol. steel fibers and hardly more than 0.75% vol. those fibers are discontinuous and not connected to each other. tests only show a slight decrease in electrical resistivity due to the addition of steel fibers. However, the resistance to current flow is still substantial. effects from moisture content and aggregate composition are much more dominant than the addition of steel fibers.
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Dalian Harvest Metal Fibers Co., Ltd. is a Sino-France joint venture company , a specialty in producing thermal resistant steel fibers, and steel fibers for concrete reinforcement. HARVEST steel fibers have been well adopted by a wide range of professionals, such as Metallurgy, Cement, Petrol refinery, Chemistry, Ceramics, and so on. Steel fibers have been well used in concrete construction projects, such as  bridges, tannels, high ways, airport,  power stations, industrial floors. More than 90% of HARVEST steel fibers have been used by our customers in Asia, Europe, North and South America,  Australia, etc… . HARVEST has been winning the users high praise because of high quality products and good services.