A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Creep of Coated Reinforcing Bars in Concrete
The creep properties of organic coated and uncoated No. 6 deformed steel reinforcing bars, embedded in concrete prisms, were determined for corresponding tensile stresses in the bars at the loaded ends of 15,000 psi (103 MN/sq m) and 30,000 psi (206 MN/sq m). Slip of the bars in the concrete under static loading was measured at both the free and loaded ends of the specimens at periodic intervals for two years. Twenty-four reinforcing bars were included in the tests, they consisted of 18 bars coated (in duplicates) with 9 different epoxy materials; 2 bars coated with a poly(vinyl chloride) material; and 4 uncoated reinforcing bars. The relative performance of some coated reinforcing bars in the creep study were different than those obtained in earlier pullout tests. Therefore, from the data obtained in this study, it appears that the long-term structural performance of organic coated reinforcing bars in concrete cannot be estimated solely on the basis of their bond strength determined from pullout tests.
Creep of Coated Reinforcing Bars in Concrete
The creep properties of organic coated and uncoated No. 6 deformed steel reinforcing bars, embedded in concrete prisms, were determined for corresponding tensile stresses in the bars at the loaded ends of 15,000 psi (103 MN/sq m) and 30,000 psi (206 MN/sq m). Slip of the bars in the concrete under static loading was measured at both the free and loaded ends of the specimens at periodic intervals for two years. Twenty-four reinforcing bars were included in the tests, they consisted of 18 bars coated (in duplicates) with 9 different epoxy materials; 2 bars coated with a poly(vinyl chloride) material; and 4 uncoated reinforcing bars. The relative performance of some coated reinforcing bars in the creep study were different than those obtained in earlier pullout tests. Therefore, from the data obtained in this study, it appears that the long-term structural performance of organic coated reinforcing bars in concrete cannot be estimated solely on the basis of their bond strength determined from pullout tests.
Creep of Coated Reinforcing Bars in Concrete
J. R. Clifton (author) / R. G. Mathey (author) / E. D. Anderson (author)
1979
13 pages
Report
No indication
English
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