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The author outlines aggregate process control procedures applicable to both single-plant and multiple-plant operations. The elements in establishing a control program covered here include: the basic plan, the selection and training of technicians, the sampling locations, and rapid testing and reporting methods. The main benefit of an effective control program is that it minimizes the chance of incurring penalties in the form of price reductions when the aggregate is used in products which fail to conform to the requirements of statistical or end-result specifications. Other benefits are also discussed.
quality assurance, pavements, aggregates, end-result specifications, aggregate process control, quality control, sampling, testing, control charts
Manager, Materials Control and Research, Standard Slag Co., Youngstown, Ohio