Laboratory testing is an integral part of geotechnical engineering research and practice. A well planned and properly executed laboratory testing program will provide soil and/or rock properties needed to perform geotechnical analyses and develop geotechnical models. Soil and rock samples needed for the tests have to be carefully obtained in the field and properly stored to get accurate results. However, disturbed specimens can also be used at some tests to determine geotechnical parameters that are not affected by disturbance (natural water content, Atterberg limits, etc.). Most test procedures are based on specific standards followed worldwide. Consistent laboratory routines, suitable and well-maintained test equipment as well as proper interpretation of test results are essential to estimate the engineering characteristics of soil and rock materials to accurately predict their behavior.
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