Core Cutting
This method covers obtaining, preparing and testing cores drilled from concrete for length or compressive strength determinations. This test method provides standardized procedures for obtaining and testing specimens to determine the compressive strength of in place concrete as per the standards of IS:456.
DESCRIPTION:
The strength of concrete measured by test cores is affected by the amount and distribution of moisture in the specimen at the time of test. There is no standard procedure to condition a specimen that will ensure that, at the time of test, it will be in the identical moisture condition as concrete in the structure.
The moisture conditioning procedures in this test method are intended to provide reproducible moisture conditions that minimize within laboratory and between laboratory variations and to reduce the effects of moisture introduced during specimen preparation. When cores are obtained from structures, the location of coring is determined based on specific conditions.