<rss version="2.0" xmlns:atom="https://www.w3.org/2005/Atom">
  <channel>
    <title>Transport Research International Documentation (TRID)</title>
    <link>https://trid.trb.org/</link>
    <atom:link href="https://trid.trb.org/Record/RSS?s=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" rel="self" type="application/rss+xml" />
    <description></description>
    <language>en-us</language>
    <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>
    <image>
      <title>Transport Research International Documentation (TRID)</title>
      <url>https://trid.trb.org/Images/PageHeader-wTitle.jpg</url>
      <link>https://trid.trb.org/</link>
    </image>
    <item>
      <title>STUDIES OF PAVEMENT WEAR CAUSED BY STUDDED PASSENGER CAR TYRES ON STRAIGHT TEST TRACKS, THE "BROMMA TRACK"</title>
      <link>https://trid.trb.org/View/38101</link>
      <description><![CDATA[A test track composed of eight straight test sections with different wearing courses was built on the domestic airport of Stockholm (Bromma Airport) during the autumn of 1968, and it was trafficked by an autopiloted wehicle provided with four studded tyres.  The purpose was to determine the wear of different pavements caused by studded tyres under realistic conditions and to establish the relation between such wear and the wear measured in similar experiments in the road machine of the Road Research Institute.  The tests were carried out during two winters, comprising in all 100,000 circuits.  The wear was measured by geometric profiling, and on the same time a method based upon the measurement of radioactive radiation absorption was tried. The results showed the same ranking of the different pavements with respect to wear on the Bromma test track as in the road machine.  They also showed that the wear resistance is favored by enrichment of large aggregate, especially in the surface, of the wearing course, by increased binder hardness and by tar precoating of the aggregate at high temperature.  Teh manufacture of wearing courses including rolled-in coated chippings has some critical stages which can easily make the addition of the chippings useless.  One small sample from an old Portland cement concrete pavement was also included and showed comparatively little wear.]]></description>
      <pubDate>Sat, 18 Oct 1975 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/38101</guid>
    </item>
    <item>
      <title>STUDIES OF PAVEMENT WEAR CAUSED BY STUDDED PASSENGER CAR TYRES ON STRAIGHT TEST TRACKS, THE "BROMMA TRACK"</title>
      <link>https://trid.trb.org/View/106226</link>
      <description><![CDATA[A TEST TRACK COMPOSED OF EIGHT STRAIGHT TEST SECTIONS WITH DIFFERENT WEARING COURSES WAS BUILT ON THE DOMESTIC AIRPORT OF STOCKHOLM DURING THE AUTUMN OF 1968, AND IT WAS TRAFFICKED BY AN AUTOPILOTED VEHICLE EQUIPPED WITH FOUR STUDDED TIRES. THE PURPOSE WAS TO DETERMINE THE WEAR OF DIFFERENT PAVEMENTS CAUSED BY STUDDED TIRES UNDER REALISTIC CONDITIONS AND TO ESTABLISH THE RELATION BETWEEN SUCH WEAR AND THE WEAR MEASURED IN SIMILAR EXPERIMENTS CONDUCTED IN THE ROAD MACHINE OF THE ROAD RESEARCH INSTITUTE. THE TESTS WERE CARRIED OUT DURING TWO WINTERS, COMPRISING IN ALL 100,000 CIRCUITS. THE WEAR WAS MEASURED BY GEOMETRIC PROFILING; AT THE SAME TIME, A METHOD BASED UPON THE MEASUREMENT OF RADIOACTIVE RADIATION ABSORPTION WAS TRIED. THE TESTS SHOWED THE SAME RANKING OF THE DIFFERENT PAVEMENTS ON THE TEST TRACK AS IN THE ROAD MACHINE. THEY ALSO SHOWED THAT WEAR RESISTANCE IS INCREASED BY ENRICHMENT OF THE LARGE AGGREGATE, ESPECIALLY IN THE SURFACE OF THE WEARING COURSE, BY INCREASED BINDER HARDNESS, AND BY TAR PRECOATING OF THE AGGREGATE AT HIGH TEMPERATURE. THE RESULTS ALSO REVEALED THAT THE MANUFACTURE OF WEARING COURSES WHICH INCLUDE ROLLED-IN COATED CHIPPINGS HAVE SOME CRITICAL STAGES WHICH CAN EASILY MAKE THE ADDITION OF THE CHIPPINGS USELESS. ONE SMALL SAMPLE FROM AN OLD PORTLAND CEMENT CONCRETE PAVEMENT WAS INCLUDED AND SHOWED COMPARATIVELY LITTLE WEAR. /AUTHOR/]]></description>
      <pubDate>Tue, 28 Nov 1972 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/106226</guid>
    </item>
  </channel>
</rss>