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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>Transport Research International Documentation (TRID)</title>
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      <title>A NEW TYPE OF ROCKFILL DAM /IN NORWEGIAN/</title>
      <link>https://trid.trb.org/View/125800</link>
      <description><![CDATA[ROCKFILL DAMS IN NORWAY USUALLY HAVE AN IMPREVIOUS CORE CONSISTING OF MORAINE, BUT CONCRETE, WOOD, AND ASPHALTIC CONCRETE HAVE ALSO BEEN USED. EXPERIENCE GAINED IN THE USE OF ASPHALTIC CONCRETE INDICATES THAT A CONSIDERABLE AMOUNT OF SUPPLEMENTARY EQUIPMENT IS OFTEN NEEDED BECAUSE OF THE WEATHER CONDITIONS. TO REDUCE THESE SHORTCOMINGS, HOT ASPHALT WAS POURED INTO A CENTRAL CORE OF ROCK AGGREGATE. BASED ON LABORATORY STUDIES, THE FOLLOWING SPECIFICATIONS HAVE BEEN SUGGESTED: THE TEMPERATURES OF THE ASPHALT AND THE AGGREGATE MUST BE HIGHER THAN 160 DEGREES C AND 3 DEGREES C RESPECTIVELY, AND THE SIZE OF THE AGGREGATE SHOULD BE 3/4-3". DURING 1969 A TEST DAM WAS BUILT IN TROLLHEIMEN HAVING A LENGTH OF 120 M AND A MAXIMUM HEIGHT OF 12 M. THE DAM HAS ONLY BEEN IN OPERATION FOR HALF A YEAR, BUT THE PRELIMINARY RESULTS INDICATE THAT THERE IS NO LEAKAGE. NO HORIZONTAL MOVEMENTS HAVE BEEN OBSERVED, ALTHOUGH DEFORMATION MEASUREMENTS SHOW THAT THE LOWER PART OF THE CORE HAS BECOME SOMEWHAT LARGER, AND THAT THE ASPHALT ABOVE IT HAS SETTLED. /SVV/TRRL/]]></description>
      <pubDate>Mon, 07 Aug 1972 00:00:00 GMT</pubDate>
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      <title>FIELD EXPERIMENTATION WITH BITUMINOUS UNDERSEALING MATERIALS</title>
      <link>https://trid.trb.org/View/101281</link>
      <description><![CDATA[THE PRACTICE OF INJECTING HOT ASPHALT UNDER CONCRETE PAVEMENTS FOR STABILIZING THE SLABS AND CONTROLLING PUMPING HAS BEEN USED EXTENSIVELY IN ILLINOIS FOR SEVERAL YEARS. MUCH OF THE WORK HAS BEEN IN CONJUNCTION WITH RESURFACING OF OLD CONCRETE PAVEMENTS WITH BITUMINOUS-CONCRETE RESURFACING, WHERE THE UNDERSEAL IS USED TO FILL VOIDS IN THE SUBGRADES AND RESEAT UNSTABLE SLABS PRIOR TO RESURFACING OPERATIONS. THE UNDERSEAL MATERIAL IS A SLIGHTLY MODIFIED GRADE A OIL ASPHALT FILLER AASHO DESIGNATION: M18-42A. THIS MATERIAL APPEARS TO HAVE SATISFACTORY FLUIDITY AT THE TIME OF PUMPING AND DOES NOT BLEED EXCESSIVELY AT PREVAILING SUMMER TEMPERATURES. HOWEVER, THERE IS SOME EVIDENCE THAT THE MATERIAL BECOMES BRITTLE AND CRACKS AT LOW TEMPERATURES, DESTROYING ITS INTENDED FUNCTION AS A FLEXIBLE BARRIER AGAINST THE PUMPING OF SUBGRADE FINES UNDER HEAVY TRAFFIC. IN THE EXPERIMENT DESCRIBED, THREE ASPHALTIC MATERIALS WERE USED IN CONJUNCTION WITH TWO RATES OF APPLICATION: (1) AASHO DESIGNATION: M18-42A, WITH A MODIFIED MINIMUM LIMIT FOR DUCTILITY SET AT 3.0 CM; (2) 0-KORITE, A MATERIAL HAVING RELATIVELY HIGH DUCTILITY AT LOW TEMPERATURES; AND (3) EXPERIMENTAL NO. 2, A MATERIAL HAVING A LOW TEMPERATURE DUCTILITY MIDWAY BETWEEN THAT OF M18-42A MATERIAL AND 0-KORITE. TEST SECTIONS 4,000 FT. LONG WERE USED FOR EACH MATERIAL AND EACH RATE OF APPLICATION. CONDITION SURVEYS WERE MADE DURING THE SPRING PRIOR TO THE UNDERSEAL APPLICATION AND DURING THE SPRING FOLLOWING APPLICATION. THE SECOND SURVEY INDICATED THAT THE TREATMENT MATERIALLY REDUCED PUMPING. /AUTHOR/]]></description>
      <pubDate>Sun, 15 Aug 1971 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/101281</guid>
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      <title>ASPHALT-KETTLE ATTACHMENT SAVES TIME</title>
      <link>https://trid.trb.org/View/107441</link>
      <description><![CDATA[A DEVICE TO INJECT A STREAM OF ASPHALT INTO THE JOINT THAT FORMS BETWEEN A CONCRETE PAVEMENT AND ASPHALT-SURFACED SHOULDERS IS BRIEFLY DESCRIBED. IT CONSISTS OF A MOBILE ASPHALT KETTLE, WITH AN ATTACHED TRACTOR SEAT, ONTO WHICH HAS BEEN ADDED A FLEXIBLE RUBBER HOSE IWTH A VALVE AND A METAL CONTROL ARM. THE OPERATOR SITS ON THE TRACTOR SEAT BY THE ASPHALT KETTLE AND, WHILE THE UNIT IS TOWED SLOWLY BY A TRUCK ALONG THE SHOULDER, DIRECTS THE ASPHALT INTO THE JOINT. /RRL/]]></description>
      <pubDate>Fri, 06 Mar 1970 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/107441</guid>
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