Analysis of Flexural Fatigue of Concrete containing Coarse Recycled Concrete Aggregates (RCA)

Mohit Talwar, Sumit Arora

Abstract


The paper presents results of an investigation to study the flexural fatigue performance of concrete beams made with 100% Coarse Recycled Concrete Aggregates (RCA). Experimental investigation has been carried out to obtain the flexural fatigue lives of concrete beam specimens of size 100 × 100 × 500 mm at various stress levels under four points flexural fatigue loading. The test data is used to plot the S-N curves and a simple regression analysis is used to propose an equation to estimate the flexural fatigue strength of concrete made with 100% RCA. The flexural fatigue performance of concrete made with 100% RCA has been assessed in terms of its mean fatigue life. Two million cycles fatigue strength/endurance limit has also been estimated and compared with the previous studies available on Coarse Natural Aggregates (NA).

Keywords


Recycled concrete aggregates, Mean and design fatigue life, Endurance limit.

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DOI: https://doi.org/10.26483/ijarcs.v8i4.3721

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