RELATIONSHIP BETWEEN CUBE AND CYLINDER STRENGTHS FOR HIGH STRENGTH CONCRETE

One of the most important properties of concrete is its compressive strength. The strength of concrete can be affected by size, shape of specimens and many more factors. This project aims to experimentally develop mathematical relationships between standard cube and standard cylinder strengths, smaller cube and standard cube strengths, and smaller cube and standard cylinder strengths for high strength concrete. A total of 144 cubestsomm, 72 cubes10omm and 72 cylinderSt50hJOOmm were made from 12 mixes which comprised of 6 different design mix compositions. All specimens from the same batch were identically cast, cured and tested. The concrete strength of each mix was designed to have cubic strength of 50 MPa and higher at 28 days. Expressions relating the compressive strengths of standard cylinder, standard cube and smaller cube are presented. These expressions might be used to combine with other researchers' results to obtain useful interrelationships between the strengths of any two types of specimens