Compressive Strength Relationship Between Cylinder Tests and Core Testsby Bryce P. Simons, Simons Engineering Services, United States,
Abstract: A core obtained from any field cured structural member will be inherently different than the field cured cylinder used as a control. Consequently, comparisons with field cured cylinders to determine the relationship between core tests and cylinder tests can not be accurate because there have not been enough variables eliminated to assess this relationship. Without knowing the relationship between a cylinder test and a core test, there is no way that the in-place compressive strength of concrete can accurately be determined with the core test procedure. This paper reports on a study to determine the relationship between compressive strength test results achieved using basic cylinder tests and those achieved using drilled cores. Study materials, methods and results are discussed.
Subject Headings: Cylinders | Compressive strength | Curing | Drilling | Structural control | Comparative studies | Field tests
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