Evaluation of Ratio between Splitting Tensile Strength and Compressive Strength for Concretes up to 120 MPa and its Application in Strength Criterion

Abstract

A large-scale regression analysis was carried out using experimental data gathered from various sources to evaluate the ratio of splitting tensile strength to cylinder compressive strength as a function of compressive strength of concrete. The reliability of the proposed equation based on experimental data for compressive strength ranging between 4 and 120 MPa (580 to 17,400 psi) was assessed by means of the integral absolute error (IAE). It is also shown that, by only knowing compressive strength and the ratio of tensile to compressive strength, the failure envelope for very highstrength concrete can be established using Johnston's strength criterion without performing triaxial compression tests. A numerical example demonstrates the application of Johnston's strength criterion.

Impact of Design Parameters on the Ratio of Compressive to Split Tensile Strength of Self-Compacting Concrete with Recycled Aggregate

“…It can be explained as: the increasing rate of split tensile strength occurs at a much smaller proportion compared to the increasing rate of compressive strength. These results are in agreement with findings in the literature [44]. It is also observed that the strength ratio is 0.050 to 0.120 for the lower grade of SCC [Family V and VI] and increased to the range of 0.050 to 0.150 for a medium grade of SCC [Family III and IV].…”

“…In general, the strength ratio decreases with increasing compressive strength (irrespective of the grade of concrete) at a decreasing rate as observed and already reported in literature [44]. It can be explained as: the increasing rate of split tensile strength occurs at a much smaller proportion compared to the increasing rate of compressive strength.…”

“…The material constants defining the failure envelope are related to the strength ratio [47]. Hence, it becomes important to identify the effect of strength ratio on various grades of concrete with variation in proportion, as is also reported in the literature [44].…”

“…Concrete is weak in tension but when it is used as a flexural member, some part of concrete is subjected to tension. Hence, it is necessary to study the concrete properties concerning tension; one such experiment accepted widely by researchers and academicians is split tensile strength [44]. Irrespective of the size of specimens, these two geometrical shapes are accepted widely.…”

“…Because at actual practice, 28 days curing will obtain almost 90% of strength at normal curing condition [45]. For simplification purposes, some studies in the literature use the strength ratio to determine other properties which may be either mechanical or durability properties [44]. The ultimate strain value in uniaxial tension is expressed in terms of the strength ratio [46].…”