Abstract
ABSTRACT Self-compacting fibre reinforced concrete (SCFRC) is an inventive material in construction industry, which is widely used nowadays due to its inherent capability of consolidating under its self-weight in the fresh state while the advantages of fibre present are harnessed in the hardened state. The insertion of fibres, notably steel fibres in self-compacting concrete leads to significant enrichment in flexural strength, ductility, fatigue strength and toughness. In this paper, the flexural fatigue strength of SCFRC beams have been statistically commanded. For this purpose, the experimental fatigue test results of earlier researcher have been investigated using Weibull distribution. The Weibull parameters were assessed using three mathematical methods namely, energy pattern factor method (EPFM), graphical method (GM) and method of moments (MOM). The mean value of Weibull parameters was used to incorporate survival probability into stress and fatigue life (S-N) relationships. Based on the Weibull theory, empirical formula (double logarithm fatigue equations) from the S-N relationship of SCFRC beams under different survival probability are proposed based on the experimental investigation of earlier research. As a result, reveals that the proposed fatigue equations are accurate, which facilitates the designer to evaluate the fatigue life of SCFRC at required level of survival probability.
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