United States Department of Transportation
i
Quality control analysis : part IV : field simulation of asphaltic concrete specifications.
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1969-02-01
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By Shah, S. C.
[PDF-2.51 MB]
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Abstract:The report present some of the major findings, from a simulated study of statistical specifications, on three asphaltic concrete projects representing a total of approximately 30, 000 tons of hot mix. The major emphasis of the study has been on the assessment of reduced payment for non-conforming lots.
The experience gained from this study indicated (1) that the contractor will have little difficulty in assuming the responsibility of quality control of the product; (2) that the designated lot and sample size for control and acceptance of the product is adequate and realistic, except for some minor revisions for surface tolerances; (3) furthermore, that it is almost necessary for the contractor to keep abreast of the quality of his daily output in order to prevent any possible defective items, and consequently, lower economic returns.
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