THE PROBLEMS OF STANDARDIZATION OF THE SAND AND GRAVEL PRODUCTION IN CONSTRUCTION
The article deals with the problems of standardization of the sand and gravel production in construction on example of profiling plants of Iran. On the basis of conducting of testing the author suggests various indicators of such moments as the profiling, the gravel equivalent, the percent of damaging materials, the coefficient of humidify, as well as the percent of damaging in each unit of profiling, assesses and compares them with the existing measures of standards. All the corresponding research experiments were conducted in the laboratory of Mazandaran Gilda.