WebOct 15, 2024 · The results indicated that the addition of polypropylene fiber into the concrete matrix can remarkably prolong the fatigue strength of concrete. Compared with plain concrete, the fatigue strength of PFRC could be increased by up to 28.1% under the failure probability of 5%. Webpresent note the fatigue failure behavior of another tough polymer-polypropylene-is reported. In particular, the effects of notches on the failure mode are investigated as …

Low-Cycle Fatigue of Plain and Fiber-Reinforced Concrete

WebMar 7, 2012 · Observations are reported on isotactic polypropylene/organically modified nanoclay hybrids with concentrations of filler ranging from 0 to 5 wt.% in cyclic tensile tests with a stress–controlled program (oscillations between various maximum stresses and the zero minimum stress). data passed to port ok

Cyclic viscoelastoplasticity of polypropylene/nanoclay composites

WebJan 1, 1999 · Polypropylene (PP), without and with fillers and reinforcements, is widespreadly used in applications where a high resistance to repeated loading, i.e. to … WebTesting is carried out by applying a cyclic stress in four point bend between zero and the target stress; typical conditions are a square wave at 1Hz. A range of target stresses are … WebJul 1, 1997 · Fibers up to 1 percent have considerable beneficial effect on the fatigue behavior of concrete. However, beyond N/Nf = 0.8, their effectiveness tends to decrease. At lower stress levels fibers dissipate much more additional energy than at higher stress levels. martin sprenger uni graz