Various Testing Conditions Affecting Measured Compressive Strength of Concrete
By Takafumi Noguchi
Concrete Journal,Vol.35,No.9,Sept.1997
- Synopsis
- Since compressive strength of concrete is affected by various testing conditions,identical concrete from the same batch and under the same cure sometimes produces different test results. Conditions of specimens affecting test results include size, shape, high-diameter ratio, method of end preparation and coring direction from structure ; those at testing, humidity and temperature of specimen, setting, and loading rate. Such characteristics of testing machine as dimension of loading platen and spherically seated block, longitudinal and lateral stiffness, and number of supports also affect test results. In testing high strength concrete, special cares should be taken on various testing conditions whose effects have been latent in conventional concrete.
- Keywords:
- compressive strength, testing condition, dimention of specimen, end preparation, loading rate, testing machine, high strength concrete
