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The double and multiple composite techniques were applied to make the pre-stressed steel fiber high strength concrete sleeper and the pre-stressed steel fiber and silica fume high strength concrete sleeper. The change regularity of crack width and height of three series of sleepers loaded fatigue loading were tested in a 500 kN servo hydraulic fatigue test machine. The study results demonstrated that the fatigue performance of SFPRHSC sleeper was enhanced obviously because of the resistance effect of steel fiber. The fatigue performance of SFSIFUPRHSC sleeper were enhanced further because of the improvement of concrete microstructure resulted by the pozzolanic effect, crystallite effect and micro-aggregate effect of silica fume. The SFPRHSC sleeper not only can load complex loading in specific stress, but also can work with cracks.
The double and multiple composite techniques were applied to make the pre-stressed steel fiber high strength concrete sleeper and the pre-stressed steel fiber and silica fume high strength concrete sleeper. The change regularity of crack width and height of three series of sleepers loaded fatigue loading were tested in a 500 kN servo hydraulic fatigue test machine. The study results demonstrated that the fatigue performance of SFPRHSC sleeper was enhanced obviously because of the resistance effect of steel fiber. The fatigue performance of SFSIFUPRHSC sleeper were enhanced further because of the improvement of concrete microstructure resulted by the pozzolanic effect, crystallite effect and micro-aggregate effect of silica fume. The SFPRHSC sleeper not only can load complex loading in specific stress, but also can work with cracks.
Study on the fatigue characteristics of pre-stressed steel fiber high strength concrete
Untersuchung der Ermüdungseigenschaften von vorgespanntem Stahlfaser-Hochfestbeton
Titel chinesisch
1999
7 Seiten, 2 Bilder, 10 Tabellen, 4 Quellen
Article (Journal)
Unknown
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