Published: 1977
Total Pages: 120
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This report covers the first phase of an investigation into current aggregate gradation control practies. It presents the results of a literature search and a survey of current testing procedures and sampling and testing frequencies for various aggregate uses. Summary information is presented on length and method of sample drying; size and number of sieves; length and method shaking; source of the sample (i.e. stockpile, truck, roadway, etc.); and who (producer or consumer) performs the test. Also included are recommendations as to testing and sampling frequencies based on theinformation gathered.