ASTM C490/C490M Standard Practice for Use of Apparatus for the Determination of Length Change of Hardened Cement Paste, Mortar, and Concrete
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ASTM International
Standard Practice for Use of Apparatus for the Determination of Length Change of Hardened Cement Paste, Mortar, and Concrete
N C490/C490M
Annotation
This practice covers the requirements for the apparatus and equipment used to prepare specimens for the determination of length change in hardened cement paste, mortar, and concrete, the apparatus and equipment used for the determination of these length changes, and the procedures for its use
Methods for the preparation and curing of test specimens, conditions of testing and curing, and detailed procedures for calculating and reporting test results are contained in applicable test methods
The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard
*A Summary of Changes section appears at the end of this standard
Автоматический перевод:
Стандартной практикой для использования аппарата для определения изменения длины Затвердевшего цементного теста, раствора и бетона
Эта практика охватывает требования для аппаратуры и оборудования, используемого для подготовки образцов для определения изменения длины затвердевшего цементного теста, раствора и бетона, приборы и оборудование, используемые для определения этих изменений длина, а также процедуры его применения



