Abstract
The size effect is an important application of concrete fracture mechanics. Many studies have been done on the size effect in recent years. Most of studies carried out by using specimens under uniaxial tensile stress. In this study, the size effect on the tensile strength of mortar mixtures was investigated. The triangular plate method was used to find size effect on the tensile strength of the mortar mixtures. In the study, the mortar mixtures specimens having two different water-cement ratios and various sizes in the absence and presence of steel fibers were prepared. For this purpose, two classes of mortar having water-cement ratios of 0.42 without steel fiber and containing 1% steel fibers were designed. By adding 1%, steel fiber by a total of 30 triangular plate specimens with five different sizes was prepared. The size effect analyses were made on the data obtained from the experiments and size effect curves were established. Classical Type I size effect analyses of peak loads obtained from these tests are performed. The Microplane Model M7 is used to predict the peak loads and fracture patterns, size effect, and the load-deflection curves of both the geometrically similar triangular test specimens. As a result of this study, it is concluded that the triangular plates testing method can be used as an alternative test to determine the size effect on the tensile strength and fracture behavior of the mortar mixture in both presence and absence of steel fibers.
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Deliktaş, B., Türker, H.T., Shareef, F.A., Caner, F.C. (2022). Size Effect on Damage Response of Triangular Flexural Test Method. In: Voyiadjis, G.Z. (eds) Handbook of Damage Mechanics . Springer, Cham. https://doi.org/10.1007/978-3-030-60242-0_89
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