SL 128-2017 in English

This standard provides detailed procedures for the calibration of concrete mixing machines used in testing. It outlines the necessary steps, equipment, and methods to ensure the accuracy and consistency of concrete mixtures. The document specifies the conditions under which the calibration should be performed, including the preparation of materials and the execution of tests. It also includes guidelines for documenting the results and maintaining records. The content is structured to facilitate the correct application of calibration techniques in laboratory and field settings. The standard covers various aspects related to the performance and reliability of mixing equipment, ensuring that tests are conducted under standardized conditions. It serves as a reference for professionals involved in the testing and quality control of concrete.