Stiffness degradation and fracture behaviour of textile reinforced concrete under quasi-static cyclic loading

Textile Reinforced Concrete (TRC) is a thin and lightweight cement-fibre composite material.In this study, the mechanical performance of TRC under quasi-cyclic loading is evaluated through an experimental program.TRC specimen of size 500 x 60 x 10 mm with four layers of ARglass textile fibers were prepared and tested under uniaxial tensile quasi-cyclic loading.The loaddeflection response and stiffness degradation are evaluated to understand the damage progression in TRC.The result indicates substantial stiffness degradation from 17% to 60% in Zone II due to multiple crack formation indicating an accelerated deterioration process.The combined DIC and AE analysis shows that matrix cracking and crack initiation cause dense and high-frequency AE activity up to the multiple cracking zone (<0.2% strain).As cracks stabilize, widen, and propagate at increasing strain, the density of AE events reduces.