Testing and quality control of HBM

Testing, quality control and checking of the HBM should be carried out in accordance to the requirements set by the national specifications. 

Testing of the constituent materials and of the mixtures should be carried out periodically to ensure compliance with requirements and imply control of quality. The tests may include determination of the following (a) grading, water content and plasticity of the aggregate or 

A comprehensive table with the tests and quality control checks and their frequencies required in the United Kingdom is given in Highways Agency (2009b). 

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