Statistical quality control applied to asphalt concrete Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/pz50h0096

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  • The purpose of this study was to investigate an application of statistical concepts to quality control of highway construction. The application was presented qualitatively and demonstrated quantitatively by an investigation of asphalt content in asphalt concrete. For the example, an Oregon State Highway Project was sampled and tested. The average asphalt content, the standard deviation and the contribution of variation due to production, sampling and testing were evaluated. These results were compared with plant records and with the results of Oregon State Highway Department tests. Also, the example results were used to assign specification limits, demonstrate the significance of the limits, and to describe producer and purchaser risks. Comparison of results showed that present construction was good, and comparable to that of other states. While the results of this investigation are of insufficient scope to provide the foundation for statistical specifications, they substantially indicate the procedure for, and the value of, applying statistical quality control to highway construction and to highway specifications.
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  • File scanned at 300 ppi (Monochrome) using ScandAll PRO 1.8.1 on a Fi-6770A in PDF format. CVista PdfCompressor 5.0 was used for pdf compression and textual OCR.
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  • description.provenance : Approved for entry into archive by Katy Davis(kdscannerosu@gmail.com) on 2014-02-21T19:05:43Z (GMT) No. of bitstreams: 1 CoghlanGeraldT1970.pdf: 365525 bytes, checksum: 8b3e032576e219dd2cb2d44d85010807 (MD5)
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  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2014-02-21T16:08:24Z (GMT) No. of bitstreams: 1 CoghlanGeraldT1970.pdf: 365525 bytes, checksum: 8b3e032576e219dd2cb2d44d85010807 (MD5)
  • description.provenance : Made available in DSpace on 2014-02-21T19:05:43Z (GMT). No. of bitstreams: 1 CoghlanGeraldT1970.pdf: 365525 bytes, checksum: 8b3e032576e219dd2cb2d44d85010807 (MD5) Previous issue date: 1969-05-23

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