ASTM D4555-10 PDF Download

The ASTM D4555-10 standard is a test method used to determine the deformability and strength of weak rock through an in situ uniaxial compressive test. The test involves measuring the behavior of large specimens of rock under compression, taking into account both the intact material behavior and the behavior of any discontinuities within the specimen.

The standard does not specify the type of specimen to be tested or whether anisotropic factors should be considered. The specific details of the test program, such as specimen selection and testing parameters, need to be determined prior to testing based on the intended use of the data and any budgetary constraints.

While there is theoretically no limit to the size of the test specimen, practical limitations such as the strength of the specimen, the capacity of the loading apparatus, and the bearing capacity of the testing surface need to be considered. Additionally, the orientation and strength of any discontinuities in relation to the specimen geometry may also restrict the size of the specimen.

The standard emphasizes the importance of adhering to the guidelines for significant digits and rounding established in Practice D6026 for all observed and calculated values obtained during the testing process.