A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
An Investigation of the Susceptibility of Post-Tensioning Cables to Stress-Corrosion Cracking
Post-tensioning cables having ultimate tensile strength (UTS) of 270 ksi (1862 MPa) and satisfying ASTM Standard A-416 were stressed to 80 to 95 percent UTS and exposed to 3.5 percent sodium chloride and saturated calcium hydroxide solutions, where pH values ranged from 8 to 12.5. After 900 hours, since no failures were experienced, cables were forced to rupture. No appreciable reduction in strength resulted, except in cables that were artificially notched (strength losses were not due to corrosion). However, rapid failures at 95 percent UTS occurred when cables were immersed in a dilute hydrochloric acid solution where pH values ranged from 1 to 2. Time-to-failure at pH 2 averaged about 100 hours, whereas at pH 1 time-to-failure was about 1 hour.
An Investigation of the Susceptibility of Post-Tensioning Cables to Stress-Corrosion Cracking
Post-tensioning cables having ultimate tensile strength (UTS) of 270 ksi (1862 MPa) and satisfying ASTM Standard A-416 were stressed to 80 to 95 percent UTS and exposed to 3.5 percent sodium chloride and saturated calcium hydroxide solutions, where pH values ranged from 8 to 12.5. After 900 hours, since no failures were experienced, cables were forced to rupture. No appreciable reduction in strength resulted, except in cables that were artificially notched (strength losses were not due to corrosion). However, rapid failures at 95 percent UTS occurred when cables were immersed in a dilute hydrochloric acid solution where pH values ranged from 1 to 2. Time-to-failure at pH 2 averaged about 100 hours, whereas at pH 1 time-to-failure was about 1 hour.
An Investigation of the Susceptibility of Post-Tensioning Cables to Stress-Corrosion Cracking
C. Hahin (author) / J. Gambill (author) / J. K. Scott (author)
1977
14 pages
Report
No indication
English
Construction Materials, Components, & Equipment , Corrosion & Corrosion Inhibition , Materials Degradation & Fouling , Mechanical cables , Stress corrosion , Reinforcement(Structures) , Tension , Steel , Wire rope , Construction materials , Prestressing , Environmental tests , Corrosive liquids , Post-tensioning cables
Corrosion of Tensioning Cables
| British Library Conference Proceedings | 2001
Steenbras dam strengthened by post-tensioning cables
| Engineering Index Backfile | 1956
A case study of replacement of external post-tensioning cables
| Online Contents | 2014