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    <title>Transport Research International Documentation (TRID)</title>
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    <copyright>Copyright © 2026. National Academy of Sciences. All rights reserved.</copyright>
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    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
    <webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster>
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      <title>Methods of specifying and controlling compaction</title>
      <link>https://trid.trb.org/View/1209616</link>
      <description><![CDATA[This paper discusses the means of specifying and controlling the compaction of earthen materials for highway construction.  The specification of requirements in terms of a desired 'end result' or a preferred 'method' is examined in the light of the test and inspection methods available. Particular attention is directed to the practical problems of determining and allowing for the inherent variability of construction materials and methods and of sampling and testing procedures.]]></description>
      <pubDate>Fri, 24 Aug 2012 23:51:37 GMT</pubDate>
      <guid>https://trid.trb.org/View/1209616</guid>
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      <title>Quality control of dimensions in construction: a computer program for the analysis of data, part 1 - variability in pavement thickness</title>
      <link>https://trid.trb.org/View/1208994</link>
      <description><![CDATA[A computer program is available to calculate variability in pavement thickness based on level measurements obtained from test sections of road construction.  A brief outline of the sampling scheme adopted and the method of taking level measurements is given.  The sample mean and standard deviation for the overall number of measurements and for each subsample are calculated and printed for each layer separately.  A plot of the resulting cumulative thicknesses of pavement layers at the test locations against longitudinal distance is also given.  In addition, a separate plot shows variations in the top pavement surface level.  Future subroutines for the computation of variability in other dimensions of road construction and for the application of tests of significance to the calculated parameters will be developed under the current ARRB project no 215 (a).]]></description>
      <pubDate>Fri, 24 Aug 2012 23:25:01 GMT</pubDate>
      <guid>https://trid.trb.org/View/1208994</guid>
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      <title>Development of quality control procedures for road building materials and construction practices, allocation quality control resources: interim report no 1: materials variability</title>
      <link>https://trid.trb.org/View/1208680</link>
      <description><![CDATA[This interim report outlines the statistics behind selection of sample sized sufficient to establish population parameters with a specified degree of confidence.  It presents the results of a material variability study aimed at determining typical population sigmas for various material properties so that such a sampling plan could be implemented (a).]]></description>
      <pubDate>Fri, 24 Aug 2012 23:17:13 GMT</pubDate>
      <guid>https://trid.trb.org/View/1208680</guid>
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      <title>Testing and quality assurance</title>
      <link>https://trid.trb.org/View/1201351</link>
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      <pubDate>Fri, 24 Aug 2012 17:46:21 GMT</pubDate>
      <guid>https://trid.trb.org/View/1201351</guid>
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      <title>Statistical acceptance clauses for specifications</title>
      <link>https://trid.trb.org/View/1196362</link>
      <description><![CDATA[This paper discusses the theoretical background of statistical acceptance systems and some systems in use.  Evidence is provided to show that significant improvements have occurred in areas where these systems have been used.  It is suggested that statistical acceptance systems are more appropriate for many of the department's activities although there may be problems selecting the most practical procedures and target value.]]></description>
      <pubDate>Fri, 24 Aug 2012 14:53:09 GMT</pubDate>
      <guid>https://trid.trb.org/View/1196362</guid>
    </item>
    <item>
      <title>Specification for concrete segmental paving units</title>
      <link>https://trid.trb.org/View/1194732</link>
      <description><![CDATA[This specification sets out the requirements for concrete segmental paving units intended for use in public areas subject to pedestrian and/ or vehicular traffic.  It supersedes: interim specification for interlocking concrete paving units (ma15) published in March 1980 by the concrete masonry association of Australia.]]></description>
      <pubDate>Fri, 24 Aug 2012 14:02:12 GMT</pubDate>
      <guid>https://trid.trb.org/View/1194732</guid>
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    <item>
      <title>Dry coring of asphalt</title>
      <link>https://trid.trb.org/View/1188683</link>
      <description><![CDATA[The use of air cooling and dry ice in the coring of asphalt by the Department of Main Roads, Western Australia is described in this technical note.  The method has been found to be as economical and time saving alternative to the use of water for cooling.  The results of a limited study have indicated no significant difference in the density of cores cut by the dry and wet methods (a).]]></description>
      <pubDate>Fri, 24 Aug 2012 08:18:41 GMT</pubDate>
      <guid>https://trid.trb.org/View/1188683</guid>
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    <item>
      <title>Asphalt plant manual; 5th edition</title>
      <link>https://trid.trb.org/View/1188195</link>
      <description><![CDATA[]]></description>
      <pubDate>Fri, 24 Aug 2012 07:54:30 GMT</pubDate>
      <guid>https://trid.trb.org/View/1188195</guid>
    </item>
    <item>
      <title>Statistical specification development. 2nd edition</title>
      <link>https://trid.trb.org/View/1183771</link>
      <description><![CDATA[This report, which combines material from more than a dozen recent TRB papers with a substantial amount of new material, provides guidance in all phases of statistical specification development.  Written at a level that assumes the reader has a familiarity with basic quality assurance principles and terminology, it develops several original concepts in detail.  An interactive computer program for the development and analysis of statistical acceptance procedures is described.  Also included is the Fortran coding for several subroutines useful for computer simulation and a variety of other statistical applications.  Finally, the implementation of a statistical specification for portland cement concrete based on many of these principles is described (A).]]></description>
      <pubDate>Fri, 24 Aug 2012 04:42:21 GMT</pubDate>
      <guid>https://trid.trb.org/View/1183771</guid>
    </item>
    <item>
      <title>Air sampling, quality control and concrete</title>
      <link>https://trid.trb.org/View/1179263</link>
      <description><![CDATA[]]></description>
      <pubDate>Fri, 24 Aug 2012 02:14:34 GMT</pubDate>
      <guid>https://trid.trb.org/View/1179263</guid>
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      <title>Preparation of quality assurance acceptance sampling plans (variability known)</title>
      <link>https://trid.trb.org/View/1172297</link>
      <description><![CDATA[]]></description>
      <pubDate>Thu, 23 Aug 2012 22:22:06 GMT</pubDate>
      <guid>https://trid.trb.org/View/1172297</guid>
    </item>
    <item>
      <title>Defining specification limits with respect to testing variability</title>
      <link>https://trid.trb.org/View/1168549</link>
      <description><![CDATA[]]></description>
      <pubDate>Thu, 23 Aug 2012 19:47:32 GMT</pubDate>
      <guid>https://trid.trb.org/View/1168549</guid>
    </item>
    <item>
      <title>Application of statistical process control to asphalt manufacture</title>
      <link>https://trid.trb.org/View/1163521</link>
      <description><![CDATA[]]></description>
      <pubDate>Thu, 23 Aug 2012 14:15:18 GMT</pubDate>
      <guid>https://trid.trb.org/View/1163521</guid>
    </item>
    <item>
      <title>New national standards for fuel quality</title>
      <link>https://trid.trb.org/View/1159254</link>
      <description><![CDATA[]]></description>
      <pubDate>Thu, 23 Aug 2012 06:22:18 GMT</pubDate>
      <guid>https://trid.trb.org/View/1159254</guid>
    </item>
    <item>
      <title>Monitoring bitumen quality from refinery to pavement</title>
      <link>https://trid.trb.org/View/1155762</link>
      <description><![CDATA[The properties of bitumen change as it ages in bulk storage, transport, and storage on site. The change in bitumen properties from refinery, shipping, storage and road transport is monitored for some bitumen in Australia. The changes are generally related to ageing, and ageing indices are derived for different parts of the process. Using data from two South African and Australian laboratory studies into ageing of bitumen, a lack of correlation between bulk sample ageing and small sample ageing is found. It is found that changes in properties from refinery to pavement also come from micro-contamination from normal work practices. The detection and effects of contamination and how that can be controlled are considered.]]></description>
      <pubDate>Thu, 23 Aug 2012 00:33:45 GMT</pubDate>
      <guid>https://trid.trb.org/View/1155762</guid>
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