Question

Explain the mechanics behind a split tension test for concrete. How is tension

produced in the concrete by applying a compression load?

Answer 1

Tensile strength is determined by briquette test also called split tensile test.This test was formerly used to have an indirect indication of compressive strength of concrete.In this the load( compressive load) is applied along the vertical diameter which tends to splits the concrete block along the longitudinal axis ,same as in case of tensile failure.The reason for this type of testing is that it is impossible to apply direct tensile load along the axis and secondly there will always some eccentricity present

Load is applied steadily and uniformly starting from zero and increasing at the rate of 0.7N/ mm2 in 12 seconds