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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>
    <docs>http://blogs.law.harvard.edu/tech/rss</docs>
    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
    <webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster>
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      <title>Transport Research International Documentation (TRID)</title>
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      <title>Laboratory pugmill optimisation</title>
      <link>https://trid.trb.org/View/1394635</link>
      <description><![CDATA[The current method of preparing laboratory asphalt mixes (AS2891.2.1) caters for the manufacture of small to medium masses only, using a mixing bowl, the total amount depending on the size of the bowl. When a large amount of samples are required with homogeneous properties, many individual mixes must be manufactured, giving rise to possible non-uniformity of constituent ingredients. These processes take many hours to perform with labour intensive steps such as coning and quartering, individual gyratory compaction of each sample and precise temperature monitoring. The proposed method involves the manufacture of a large (up to 100 Kg.) sample in a single mix. From the slab sample individual cores can be obtained to give multiple samples for further performance comparison testing when large sample numbers are required. Samples for Beam Testing can be cut from these slabs - it is the only recommended method for preparing beams.]]></description>
      <pubDate>Wed, 13 Jan 2016 13:26:57 GMT</pubDate>
      <guid>https://trid.trb.org/View/1394635</guid>
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      <title>Development of a stone mastic asphalt mix design procedure: selection of appropriate compaction equipment for the mix design</title>
      <link>https://trid.trb.org/View/1279215</link>
      <description><![CDATA[This report examines the selection of an appropriate laboratory compaction device for stone mastic asphalt (SMA).  The laboratory compaction of the SMA mix is crucial as the volumetric properties are selected based on the results from laboratory samples, which should replicate volumetric properties that are similar to those achieved during field compaction.  Therefore the mix design relies heavily on the applicability of the laboratory compaction method.  While this project focused on the selection of an appropriate laboratory compaction device for SMA, due to the complexity of this task it was necessary to also investigate compaction temperatures.  The method described in European Standard EN 12697-10 and the achieved air void contents were used to assess the compactibility of bituminous mixtures.  Based on the outcomes of this study, it is suggested that Australian Standards are harmonised in terms of the required mixing and compaction temperatures, and the requirements for laboratory mixing and compaction temperatures should be selected as a function of the binder type.  It was found that for SMA applications the Gyropac compactor is not capable of achieving the same level of compaction (i.e. air void content) as the Servopac.  When using the Servopac according to AS 2891.2.2, it was found that 250 gyratory cycles would be applicable for preparing SMA samples in the laboratory.  However, this value requires validation.  The design air void content achieved using the Marshall compactor at 50 blows may replicate field conditions and a further decrease of the air void content is possible when using 75 blows; this needs to be considered when using the Marshall compaction.]]></description>
      <pubDate>Thu, 05 Dec 2013 08:45:30 GMT</pubDate>
      <guid>https://trid.trb.org/View/1279215</guid>
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    <item>
      <title>Technologie : des materiels de plus en plus intelligents</title>
      <link>https://trid.trb.org/View/1254188</link>
      <description><![CDATA[Les exploitants sont confrontes a de nombreuses contraintes. Il doivent documenter, planifier, gerer les operations mais aussi optimiser les travaux et reduire l'impact environnemental des materiels. De plus, les nouveaux enrobes tiedes transforment l'integralite de la chaine depuis la production jusqu'a la mise en oeuvre. C'est pourquoi les industriels misent sur les technologies nouvelles qui offrent de l'intelligence aux materiels.]]></description>
      <pubDate>Tue, 02 Jul 2013 09:57:30 GMT</pubDate>
      <guid>https://trid.trb.org/View/1254188</guid>
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    <item>
      <title>Cracking the compactor code</title>
      <link>https://trid.trb.org/View/1210699</link>
      <description><![CDATA[]]></description>
      <pubDate>Sat, 25 Aug 2012 00:53:03 GMT</pubDate>
      <guid>https://trid.trb.org/View/1210699</guid>
    </item>
    <item>
      <title>The vibrocompaction process in Australia</title>
      <link>https://trid.trb.org/View/1208284</link>
      <description><![CDATA[The vibrocompaction process is used to densify cohesionless soils by means of a powerful poker type vibrator which penetrates and compacts the soils to great depths.  Vibrocompaction soil masses show increased relative densities, reductions in settlements and an ability to adequately resist dynamic stresses induced by external forces.  In cohesive soils, the natural soil is partially replaced by granular fill placed in the holes created by the vibrator and compacted.  The paper describes the use of these processes on three major projects completed in Australia together with post compaction test results and, where available, actual settlements of completed structures.]]></description>
      <pubDate>Fri, 24 Aug 2012 22:59:29 GMT</pubDate>
      <guid>https://trid.trb.org/View/1208284</guid>
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    <item>
      <title>Methods of testing soil for engineering purposes, part E - soil compaction and density tests, AS 1289.E3.3-1977, determination of the field dry density of soil core cutter method for fine grained soils</title>
      <link>https://trid.trb.org/View/1206874</link>
      <description><![CDATA[This method covers the procedure for determining the field dry density of an undisturbed or compacted cohesive soil in situ by the use of a core cutter. This test is appropriate to fine grained cohesive soils only.  The gross mass per unit volume (wet density) may be computed and the dry mass per unit volume (dry density) obtained by correcting for the moisture content.  The field dry density is determined either for the total material or for the material finer than 19.0 Mm unless otherwise specified.]]></description>
      <pubDate>Fri, 24 Aug 2012 21:58:56 GMT</pubDate>
      <guid>https://trid.trb.org/View/1206874</guid>
    </item>
    <item>
      <title>Methods of testing soil for engineering purposes, part E - soil compaction and density tests, AS 1289.E3.2-1977, determination of the field dry density of a soil sand replacement method using sand pouring can</title>
      <link>https://trid.trb.org/View/1206873</link>
      <description><![CDATA[This method covers the procedure for determining the field dry density of undisturbed or compacted soil or of a pavement material, by the sand replacement method using a sand pouring can.  It is appropriate to fine grained, medium grained and coarse grained soils as defined in AS 1289.A1. The gross mass per unit volume (wet density) may be computed and the dry mass per unit volume (dry density) obtained by correcting for the moisture content. The field dry density is determined either for the total material or for the material finer than 19.0 Mm unless otherwise specified.]]></description>
      <pubDate>Fri, 24 Aug 2012 21:58:54 GMT</pubDate>
      <guid>https://trid.trb.org/View/1206873</guid>
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    <item>
      <title>Methods of testing soil for engineering purposes, part E - soil compaction and density tests, AS 1289.E3.1-1977, determination of the field dry density of a soil sand replacement method using a sand cone pouring apparatus</title>
      <link>https://trid.trb.org/View/1206872</link>
      <description><![CDATA[This method covers the procedure for determining the field dry density of an undisturbed or compacted soil or of a pavement material by the sand replacement method using the sand cone pouring apparatus.  This test is appropriate to fine grained and medium grained soils as defined in as 1289.A1. The gross mass per unit volume (wet density) may be computed and the dry mass per unit volume (dry density) obtained by correcting for the moisture content. The field dry density is determined either for the total material or for the material finer than 19.0 Mm unless otherwise specified.]]></description>
      <pubDate>Fri, 24 Aug 2012 21:58:53 GMT</pubDate>
      <guid>https://trid.trb.org/View/1206872</guid>
    </item>
    <item>
      <title>Methods of testing soil for engineering purposes, part E - soil compaction and density tests, AS 1289.E2.1-1977, determination of the dry density / moisture content relation of a soil using modified compaction - standard method</title>
      <link>https://trid.trb.org/View/1206870</link>
      <description><![CDATA[This method covers the determination of the relation between the moisture content and the dry density of a soil when compacted, using the modified compaction over a range of moisture contents including that giving the maximum mass of dry soil per unit volume.  Modified compactive effort is 2703 kilojoules per cubic metre.]]></description>
      <pubDate>Fri, 24 Aug 2012 21:58:50 GMT</pubDate>
      <guid>https://trid.trb.org/View/1206870</guid>
    </item>
    <item>
      <title>Methods of testing soil for engineering purposes, part E - soil compaction and density tests, AS 1289.E1.1-1977, determination of the dry density / moisture content relation of a soil using standard compaction - standard method</title>
      <link>https://trid.trb.org/View/1206868</link>
      <description><![CDATA[This method covers the determination of the relation between the moisture content and the dry density of a soil, when compacted, using the standard compaction over a range of moisture contents including that giving the maximum mass of dry soil per unit volume.  Standard compactive effort is 596 kilojoules per cubic metre.]]></description>
      <pubDate>Fri, 24 Aug 2012 21:58:47 GMT</pubDate>
      <guid>https://trid.trb.org/View/1206868</guid>
    </item>
    <item>
      <title>Methods of testing soil for engineering purposes, part A - general and sample preparation, AS 1289.A2-1977, preparation of disturbed soil samples for testing</title>
      <link>https://trid.trb.org/View/1206847</link>
      <description><![CDATA[Apparatus required for the preparation of disturbed soil samples for testing is stated.  This is followed by sample preparation procedure for 1) determination of moisture content, 2) preliminary preparation of sample for soil classification, chemical, compaction and remoulded CBR tests, 3) determination of liquid limit, plastic limit and linear shrinkage, 4) determination of soil particle density, 5) soil chemical tests, 6) particle size distribution of a soil, 7) determination of dry density / moisture content relationship and california bearing ratio.]]></description>
      <pubDate>Fri, 24 Aug 2012 21:58:16 GMT</pubDate>
      <guid>https://trid.trb.org/View/1206847</guid>
    </item>
    <item>
      <title>Papers on compaction practices</title>
      <link>https://trid.trb.org/View/1191342</link>
      <description><![CDATA[This publication comprises the following two papers: compaction practices and equipment, by ladner, pa; and compaction and moisture control, by cocks, gc.  It has been compiled to enable a wide distribution of these technical papers outlining the principles of compaction, the effective use of plant and also the importance of moisture in the compaction process. For each combination of soil and equipment type there is an optimum moisture content at which compaction can be most efficiently achieved.  It should be recognised that control of soil moisture content can often be a more important factor in achieving the specified density than the selection of compaction equipment.]]></description>
      <pubDate>Fri, 24 Aug 2012 11:56:20 GMT</pubDate>
      <guid>https://trid.trb.org/View/1191342</guid>
    </item>
    <item>
      <title>The performance of an Arrow D.500 dropping-weight compactor in the compaction of soil</title>
      <link>https://trid.trb.org/View/1179076</link>
      <description><![CDATA[]]></description>
      <pubDate>Fri, 24 Aug 2012 02:10:54 GMT</pubDate>
      <guid>https://trid.trb.org/View/1179076</guid>
    </item>
    <item>
      <title>The performance of a Delmag SV2 8 3/4-cuit vibrating plate compactor in the compaction of soil</title>
      <link>https://trid.trb.org/View/1178970</link>
      <description><![CDATA[]]></description>
      <pubDate>Fri, 24 Aug 2012 02:08:58 GMT</pubDate>
      <guid>https://trid.trb.org/View/1178970</guid>
    </item>
    <item>
      <title>The performance of a Wacker BS 100 2-cwt vibro-tamper in the compaction of soil</title>
      <link>https://trid.trb.org/View/1178957</link>
      <description><![CDATA[]]></description>
      <pubDate>Fri, 24 Aug 2012 02:08:43 GMT</pubDate>
      <guid>https://trid.trb.org/View/1178957</guid>
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