Advanced Materials Research Vol. 531

Abstract: This paper mainly presents experimental investigation and stress analysis on static fatigue property of optical fiber. By analyzing the weibull distribution of experiment, the weibull modulus was obtained. From the weibull distribution, the modulus decreased continuously with the decrease of stress, and a conclusion that experiment distributes discretely can also be drawn. Simultaneously, based on the experiment, we also obtain the feature life of optical fiber in different stress and s-t curve of the static fatigue experiment, as well as the analytical expression of static fatigue .

Abstract: The effect of polypropylene fiber and steel fiber on workability, strength and permeability of fly ash concrete was studied. Admixing polypropylene fiber or steel fiber in concrete, the workability of fresh concrete became worse. To Keep the same slump and well cohesiveness, mixing polypropylene fiber in concrete could not improve the early strength of concrete, steel fiber used in concrete can improve especially flexure strength obviously. The wear resistance of concrete with polypropylene fiber or steel fiber all increased, the permeability resistance was not decreased, impervious grade is still greater than W8.