<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>SALT STABILIZATION ON OHIO'S SECONDARY SYSTEM</title>
      <link>https://trid.trb.org/View/122019</link>
      <description><![CDATA[PURCHASE ORDER CONTRACTS FOR THE MAINTENANCE OF OHIO'S FARM-TO-MARKET ROADS ARE DESCRIBED. ITEMS INCLUDED IN THE CONTRACTS ARE: (1) CUBIC YARDS OF AGGREGATE TO BE FURNISHED, HAULED, AND TAIL-GATE SPREAD AT A STIPULATED RATE PER MILE. (2) SQUARE YARD OF SURFACE RECONDITIONED IN CONFORMANCE WITH BASE COURSE SPECIFICATIONS, INCLUDING ADDITION OF SODIUM CHLORIDE AT A PRESCRIBED RATE PER SQUARE YARD PER INCH, (3) THOUSANDS OF GALLONS OF WATER, FURNISHED AND APPLIED AS DIRECTED, (4) GALLONS OF BITUMINOUS MATERIAL FURNISHED AND APPLIED AT A STIPULATED RATE PER SQUARE YARD, (5) CUBIC YARDS OF AGGREGATE FURNISHED, HAULED AND SPREAD AT A STIPULATED RATE PER SQUARE YARD AS COVER, (6) LUMP SUM PREMIUM ON INDUSTRIAL INSURANCE, AND (7) LUMP SUM FOR LIGHTS, SIGNS, AND BARRICADES. THESE SPECIFICATIONS PERMITTED MAXIMUM FIELD CONTROL AND OBTAINED GOOD RESULTS AT REASONABLE COST. RECONDITIONING EXISTING SURFACES BY THE ADDITION OF AGGREGATE AND SODIUM CHLORIDE, WITH A PRESERVATIVE BITUMINOUS PRIME AND SEAL, HAS SUCCESSFULLY STABILIZED 260 MILES OF THE SECONDARY SYSTEM, AND IS BELIEVED TO BE A SATISFACTORY LOW COST METHOD OF REDUCING MAINTENANCE COSTS AND FURNISHING BETTER TRAFFIC SERVICE TO RURAL HIGHWAY USERS.]]></description>
      <pubDate>Sun, 15 Aug 2004 02:41:45 GMT</pubDate>
      <guid>https://trid.trb.org/View/122019</guid>
    </item>
    <item>
      <title>MOVEMENT OF AIR THROUGH WATER PARTLY SATURATED SOILS</title>
      <link>https://trid.trb.org/View/121050</link>
      <description><![CDATA[A SIMPLE EXPERIMENT HAS BEEN DEVISED TO OBSERVE THE MOVEMENT OF AIR THROUGH WATER IN UNSATURATED SOILS. THE PROCESS CAN ISOLATE AND MEASURE THE ENTRY OF AIR INTO DEVICES FOR MEASURING PORE WATER PRESSURES USED IN FIELD MEASUREMENTS. CORRECT OPERATION OF THE DEVICE IS ASSURED FOR SHORT TIME PERIODS ONLY. AFTER A PERIOD OF TIME AIR MOVES BY DIFFUSION FROM THE SMALL AND RESTRICTED BUBBLES IN THE SOIL PORES TO THE LARGER BUBBLE WHICH CAN GROW IN THE CHAMBER OF THE PRESSURE MEASURING DEVICE.]]></description>
      <pubDate>Sun, 15 Aug 2004 02:37:51 GMT</pubDate>
      <guid>https://trid.trb.org/View/121050</guid>
    </item>
    <item>
      <title>CEMENT STABILIZATION TECHNOLOGY IN THE UNITED STATES</title>
      <link>https://trid.trb.org/View/119813</link>
      <description><![CDATA[THE FOLLOWING SUBJECTS ARE DISCUSSED: PROPERTIES OF CEMENT-TREATED MATERIALS, MATERIALS, SOIL SAMPLING, LABORATORY TESTING-SHORT-CUT TESTS FOR SANDY SOILS, POORLY REACTING SANDS, CONSTRUCTION-ROAD-MIX METHOD, PLANT-MIX METHOD, INSPECTION AND FIELD CONTROL, FACTORS INFLUENCING COST, PAVEMENT DESIGN, PERFORMANCE.]]></description>
      <pubDate>Sun, 15 Aug 2004 02:30:32 GMT</pubDate>
      <guid>https://trid.trb.org/View/119813</guid>
    </item>
    <item>
      <title>FIELD CONTROL IN THE CEMENT STABILIZATION OF POOR AGGREGATES</title>
      <link>https://trid.trb.org/View/119811</link>
      <description><![CDATA[NEW ZEALAND JOURNAL ARTICLES ON CEMENT STABILIZATION OFTEN MERELY STATE THAT A SUITABLE BASIS OF DESIGN IS 250 LB/SQ. IN. UNCONFINED COMPRESSIVE STRENGTH AT 7 DAYS. TO TRANSLATE THESE APPARENTLY SIMPLE DESIGN STANDARDS INTO FIELD PRACTICE IS BY NO MEANS EASY. ELSEWHERE, THERE ARE VARIOUS DEPOSITS OF SOFTER RIVER GRAVELS, POORLY GRADED PLASTIC NUDSTONES AND ARGILLITES, AND ALSO SOFT SANDSTONES. THE STRENGTHENING OF THESE POORER MATERIALS WITH CEMENT MAKES THEM ATTRACTIVE FOR USE IN AREAS WITHOUT GOOD MATERIALS. A TABLE GIVES THE PHYSICAL PROPERTIES OF SOILS CEMENT STABILIZATION. CONSTRUCTION, LABORATORY TESTING, AND FIELD CONTROL ARE DISCUSSED.]]></description>
      <pubDate>Sun, 15 Aug 2004 02:30:29 GMT</pubDate>
      <guid>https://trid.trb.org/View/119811</guid>
    </item>
    <item>
      <title>STUDY OF DEEP SOIL STABILIZATION BY VERTICAL SAND DRAINS</title>
      <link>https://trid.trb.org/View/119579</link>
      <description><![CDATA[A SUMMARY IS PRESENTED OF AN INVESTIGATION OF AVAILABLE EXISTING INFORMATION TO DETERMINE THE USEFULNESS AND POSSIBLE LIMITATIONS OF VERTICAL SAND DRAINS FOR THE STABILIZATION OF FOUNDATION SOILS. THE EXISTING THEORIES REVIEWED FOR VERTICAL CONSOLIDATION OF CLAYS BY VERTICAL FLOW OF WATER AND RADIAL FLOW TO A DRAIN WELL ARE FOUND TO BE SATISFACTORY WITHIN THE LIMITS OF THE ASSUMPTIONS. THE SPACING OF THE DRAIN WELLS HAD A MUCH GREATER EFFECT ON CONSOLIDATION RATES THAN DRAIN SIZE. APPLICATION OF THE THEORIES FOR RATE OF CONSOLIDATION REQUIRE EVALUATION OF THE COEFFICIENTS OF PERMEABILITY OF THE SOIL IN BOTH THE HORIZONTAL AND VERTICAL DIRECTION AT THE SITE OF A PROPOSED DRAIN WELL INSTALLATION. SECONDARY COMPRESSION MODIFIES THE EFFECTIVENESS OF SAND DRAINS IN REDUCING OR ELIMINATING FUTURE SETTLEMENTS. PROCEDURES WERE REVIEWED FOR DETERMINING THE SOIL PROPERTIES REQUIRED IN THE DESIGN OF SAND DRAIN INSTALLATIONS. FOR MOST SOILS IN WHICH SAND DRAINS MIGHT BE CONSIDERED TO BE BENEFICIAL, IN SITU SHEAR STRENGTHS CAN BE DETERMINED BY UNCONFINED COMPRESSION TESTS, VANE SHEAR TESTS OR CONSOLIDATION/PRESSURE RATIOS. GAIN IN SHEAR STRENGTH WITH CONSOLIDATION CAN BE ESTIMATED FROM CONSOLIDATION/ PRESSURE RATIOS OR OTHER KNOWN METHODS. OTHER SOIL PROPERTIES INVOLVED INCLUDE COMPRESSIBILITY, COEFFICIENT OF CONSOLIDATION, COEFFICIENT OF SECONDARY COMPRESSION, AND DEGREE OF SATURATION. EXISTING SAND DRAIN INSTALLATIONS WERE ANALYZED WITH DESCRIPTIONS OF THEIR PHYSICAL FEATURES, DESIGN PROCEDURES, OBSERVATIONS OF FIELD PERFORMANCE, FIELD CONTROL INSTRUMENTATION, AND THE APPLICATION OF CONSOLIDATION THEORY TO ANALYSIS OF FIELD OBSERVATIONS. IT IS CONCLUDED THAT THE MAJORITY OF SAND DRAIN INSTALLATIONS HAVE PERFORMED SATISFACTORILY. WHEN SAND DRAINS ARE USED FOR STABILIZATION OF SOFT AND COMPRESSIBLE SOILS OF LOW PERMEABILITY, THE BENEFITS RESULT SOLELY FROM ACCELERATION OF PRIMARY CONSOLIDATION. SETTLEMENTS DUE TO SECONDARY COMPRESSION, BEING INDEPENDENT OF THE PERMEABILITY OF THE SOIL, ARE NOT REDUCED BY THE USE OF SAND DRAINS. IT IS CONCLUDED THAT SAND DRAINS ARE USEFUL FOR STABILIZATION OF MANY SOFT COMPRESSIBLE SOILS BUT THAT THEY CANNOT BE USED INDISCRIMINATELY.]]></description>
      <pubDate>Sun, 15 Aug 2004 02:24:33 GMT</pubDate>
      <guid>https://trid.trb.org/View/119579</guid>
    </item>
    <item>
      <title>ENVIRONMENTAL FACTORS IN SOIL COMPACTION</title>
      <link>https://trid.trb.org/View/119518</link>
      <description><![CDATA[THE FUNDAMENTAL PRINCIPLES AND PRACTICES OF SOIL COMPACTION ARE PRESENTED. THE POSSIBILITIES OF IMPROVING EXISTING STANDARD TEST PROCEDURES FOR COMPACTION OF SOILS ARE EXPLORED FOR THE PURPOSES OF INCREASING THE RELIABILITY AND ADEQUACY OF TEST CRITERIA FOR FIELD CONTROL OF COMPACTION. CERTAIN CONCEPTS AND PRINCIPLES ARE CONSIDERED TO BE FUNDAMENTAL FOR UNDERSTANDING AND EVALUATING COMPACTION PHENOMENA AND FOR MAKING RELIABLE AND EFFECTIVE APPLICATIONS OF COMPACTION TEST DATA. THE IMPORTANCE AND CONTROLLING INFLUENCE OF ENVIRONMENTAL CONDITIONS IS NOW BEING RECOGNIZED. THE MAJOR PROBLEMS ARE TO MAKE COMPACTION TEST DATA AND THE FIELD CONTROL CRITERIA DERIVED THEREFROM MORE RELIABLE, ADEQUATE, AND EFFECTIVE. THIS REQUIRES MAKING THESE CRITERIA FULLY REPRESENTATIVE OF EXISTING FIELD ENVIRONMENTAL AND CONSTRUCTION CONDITIONS THAT GOVERN IN EACH SITUATION. THESE PROBLEMS ARE TREATED AND EVALUATED IN SOME DETAIL. THE PAPER WAS PRESENTED AT THE 67TH ANNUAL MEETING OF THE SOCIETY. /RRL/A/]]></description>
      <pubDate>Sun, 15 Aug 2004 02:23:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/119518</guid>
    </item>
    <item>
      <title>CLASSIFICATION OF VOLCANIC SOILS FOR ROADMAKING</title>
      <link>https://trid.trb.org/View/119005</link>
      <description><![CDATA[THE RECENT ASH SOILS OF NEW ZEALAND COVER EXTENSIVE AREAS AND HAVE UNUSUAL PROPERTIES. BECAUSE OF A DEARTH OF ROAD METAL, THE SHOWER MATERIAL ITSELF MUST IN SOME INSTANCES BE USED FOR PAVEMENT CONSTRUCTION. THE FIRST PART OF THIS PAPER DESCRIBES HOW CLASSIFICATION OF SOILS BY SHOWERS, AND THE SYSTEMATIC TABULATION OF THE RESULTS OF SOIL SURVEYS, PAVEMENT INVESTIGATIONS, AND FIELD CONTROL TESTING, ARE USED TO DEVELOP DESIGN CRITERIA AND TO PRODUCE SUMMARIZING CHARTS AND REPORTS FOR EACH SOIL. IN THE SECOND PART OF THE PAPER THE UNUSUAL PROPERTIES AND THE PROBLEMS ENCOUNTERED IN TESTING AND CONSTRUCTION ARE DISCUSSED. /AUTHOR/]]></description>
      <pubDate>Sun, 15 Aug 2004 02:09:53 GMT</pubDate>
      <guid>https://trid.trb.org/View/119005</guid>
    </item>
    <item>
      <title>ILLINOIS DEVELOPS STABLE MIXES</title>
      <link>https://trid.trb.org/View/486643</link>
      <description><![CDATA[In February of 1984, the Illinois Department of Transportation (IDOT) assembled the Bituminous Task Force on Stability and Durability.  The Task Force was asked to (1) review IDOT policies, procedures, and operations associated with the placement of bituminous overlays on interstate routes, and (2) recommend changes necessary to increase the resistance of the overlay to severe and immediate rutting.  This paper reviews the Task Force technical findings concerning mix design and field control and the Task Force recommendations, and discusses the results of implementation of these recommendations.  Concluding comments concern the challenges that remain in education and training of both IDOT and contractor personnel.]]></description>
      <pubDate>Fri, 05 Jun 1998 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/486643</guid>
    </item>
    <item>
      <title>INDUSTRY UPDATE ON SUPERPAVE IMPLEMENTATION: APPLYING YESTERDAY'S EXPERIENCE TO TOMORROW'S TECHNOLOGY WITH TODAY'S COMMON SENSE. DRAFT REPORT</title>
      <link>https://trid.trb.org/View/473917</link>
      <description><![CDATA[The purpose of this document is to provide an update on Superpave implementation and to offer Hot Mix Asphalt (HMA) industry perspective on the implementation process.  Specific implementation issues which are addressed are:  field management; aggregate considerations; binder management; mixture design; use of recycled asphalt pavement (RAP); non-dense graded mixes; matching design requirements to traffic volume; performance testing; and training.]]></description>
      <pubDate>Thu, 30 Apr 1998 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/473917</guid>
    </item>
    <item>
      <title>THREE-DIMENSIONAL IMAGE ANALYSIS OF AGGREGATE PARTICLES FROM ORTHOGONAL PROJECTIONS</title>
      <link>https://trid.trb.org/View/469434</link>
      <description><![CDATA[Digital image analysis provides the capability for rapid measurement of particle characteristics.  When an image is captured and digitized, numerous measurements can be made in near real time for each particle.  Usually, image analysis techniques treat particles as two-dimensional objects since only the two-dimensional projection of the particles is captured.  In this study, three-dimensional analysis of aggregate particles that was performed by attaching aggregates in sample trays with two perpendicular faces is described.  After the initial projected image of the aggregates is captured and measured, the sample trays are rotated 90 degrees so that the aggregates are now perpendicular to their original orientation and the dimensions of the aggregates in the new projected image are captured and measured.  The long, intermediate, and short particle dimensions provide direct measures of the flatness and elongation of the particles.  Some other shape indexes can also be derived from the measurements of area and perimeter length. The proposed image analysis method was verified by comparing the results obtained with manual measurements of particle dimensions for uniform size [passing 12.7 mm (1/2 in.) sieve and retained on 9.5 mm (3/8 in.) sieve] aggregates.  Three-dimensional image analysis was also performed on five aggregates of standard size No. 89 from different sources, and the results are summarized herein.  The proposed method is expected to improve field quality control of aggregates used in hot mix asphalt.]]></description>
      <pubDate>Sat, 27 Dec 1997 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/469434</guid>
    </item>
    <item>
      <title>CONTROL OF VOLUMETRIC PROPERTIES OF HOT-MIX ASPHALT BY FIELD MANAGEMENT</title>
      <link>https://trid.trb.org/View/469975</link>
      <description><![CDATA[Significant differences in the volumetric properties of laboratory-designed and plant-produced hot-mix asphalt (HMA) generally exist as demonstrated by the Federal Highway Administration (FHWA) Demonstration Project No. 74.  The volumetric properties include voids in the mineral aggregate (VMA) and voids in the total mix (VTM).  Guidelines for HMA contractors are needed to reconcile these differences and maintain control of volumetric properties during HMA production. The HMA mix design and field production test data (such as asphalt content, gradation, and volumetric properties) from 24 FHWA demonstration projects were entered into a data base and statistically analyzed.  The objective was to identify and, if possible, quantify the independent variables (such as asphalt content and the percentages of material passing the No. 200 and other sieves) that significantly affect dependent variables VMA and VTM.  The statistical analysis methods consisted of correlation analysis, stepwise multiple-variable analysis, and linear-regression analysis.  On the basis of preceding work, guidelines have been developed for HMA contractors to reconcile the differences between the volumetric properties of the job mix formula and the produced HMA mix.]]></description>
      <pubDate>Mon, 03 Feb 1997 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/469975</guid>
    </item>
    <item>
      <title>THE CHOICE OF SYSTEM ARCHITECTURE IN MODERN TRAFFIC CONTROL SYSTEMS</title>
      <link>https://trid.trb.org/View/457762</link>
      <description><![CDATA[Modern Traffic Control Systems are being installed at an unprecedented rate this year (1994). These systems are now more often based on cooperation between hardware and system vendors and are incorporating sophisticated functions such as workstation video, control of variable message signs and seamlessly integrating multiple field controllers and mixed communication media. Only the rapid advances in software development tools have prevented the costs of these additions from being prohibitive. Still, the industry is not properly considering the system software costs past the implementation.]]></description>
      <pubDate>Tue, 27 Feb 1996 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/457762</guid>
    </item>
    <item>
      <title>FIELD CONTROL OF ASPHALT PAVING MIXTURES. FINAL REPORT</title>
      <link>https://trid.trb.org/View/411867</link>
      <description><![CDATA[The Oregon Department of Transportation (ODOT) controls the quality of its asphaltic concrete (AC) paving mixtures by using a statistical pay factor system based on random sampling and testing of aggregate gradation, asphalt content, and compaction density.  Concerns about potential toxicity of solvents used for asphalt extraction led to the desire for less hazardous quality control procedures.  As a result, ODOT eliminated the use of solvents.  Asphalt content is now controlled using a nuclear gage and aggregate gradations are determined from cold feed samples.  The goal of this study was to develop information and evaluate new methods for controlling quality of the AC mixture in the mat.  Specifically, this research project evaluated using a gyratory compactor in the field laboratory to determine mix quality.  Specimens were prepared from companion mixture samples using both gyratory and kneading compaction.  The properties of the mixtures were compared using a variety of standard tests including density, voids, Marshall stability, Hveem stability, etc.  The results of this research study include the following conclusions and recommendations:  Conclusions:  (1) The gyratory compactor worked well in the field laboratory.  Compared to the kneading compactor, it is relatively inexpensive and simple to operate.  The compacted specimens appear to represent the mixture quite well as shown by density and voids.  (2) The measured stability values on gyratory compacted specimens are equal to or better than those for kneading compacted specimens; the results appear to be more consistent than with kneading or Marshall compacted specimens.  (3) AC mixtures can be controlled in the field by monitoring stability; however, there is significant variability in the results.  (4) The void content measured in gyratory compacted field specimens may be used as a field control parameter.  Recommendations:  (1) The gyratory method of compaction should be advanced as a method of field acceptance for AC mixtures.  This should be delayed until the new SHRP compactor is available.  (2)  The field performance of the four projects evaluated in this study should be tracked for a period of 2-3 years to see if actual performance correlates with any of the test results evaluated.  (3) Specifications should be developed for controlling AC mixtures with a field compaction device used to fabricate specimens to measure air voids and voids in the mineral aggregate (VMA).]]></description>
      <pubDate>Thu, 16 Feb 1995 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/411867</guid>
    </item>
    <item>
      <title>EMBANKMENT COMPACTION VARIABILITY - CONTROL TECHNIQUES AND STATISTICAL IMPLICATIONS</title>
      <link>https://trid.trb.org/View/102694</link>
      <description><![CDATA[THE DEVELOPMENT OF A MORE EFFECTIVE METHOD FOR FIELD CONTROL OF EMBANKMENT COMPACTION MUST BE BASED ON KNOWLEDGE OF THE RESULTS BEING ACHIEVED USING CURRENT INSPECTION PROCEDURES. THE PURPOSE OF THIS STUDY WAS TO DETERMINE THE EXTENT OF COMPACTION VARIABILITY PRESENT IN FILL CONSTRUCTION FOR TYPICAL INDIANA CONSTRUCTION PROJECTS AND TO IDENTIFY THE VARIOUS FACTORS THAT LEAD TO THIS VARIATION. DIFFERENT TECHNIQUES FOR MEASURING IN-PLACE DENSITY, INCLUDING THE SAND CONE REPLACEMENT METHOD, THE WATER-FILLED BALLON VOLUME-MEASURING DEVICE, AND THE SURFACE BACKSCATTER NUCLEAR GAGE, WERE STUDIED TO PROVE VARIANCE ESTIMATES FOR USE IN THE FINAL STATISTICAL ANALYSIS. THE RESULTS INDICATE THAT WIDESPREAD COMPACTION VARIABILITY IS PRESENT IN ALL FIELD CONSTRUCTION REGARDLESS OF TESTING METHOD, AND THAT IT IS CAUSED BY A COMBINATION OF MANY INTERRELATED FACTORS. THIS OBSERVED SPREAD IN COMPACTION RESULTS INDICATES THAT CURRENT CONTROL PROCEDURES DO NOT ACCOUNT FOR VARIABILITY, AND THEREFORE AN INSPECTION PROGRAM USING STATISTICAL QUALITY CONTROL PROCEDURES DEVELOPED FOR THESE DATA IS PRESENTED. THE PROPOSED TECHNIQUE IS THAT OF USING A HYPOTHESIS DECISION THEORY THAT ACCOUNTS FOR THE COMPACTION VARIABILITY BY USING STATISTICAL PARAMETERS BASED ON RANDOM SAMPLING TO MAKE DECISIONS AS TO OVERALL COMPACTION QUALITY. /AUTHOR/]]></description>
      <pubDate>Thu, 29 Dec 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/102694</guid>
    </item>
    <item>
      <title>COMPACTION OF ASPHALT CONCRETE PAVEMENT</title>
      <link>https://trid.trb.org/View/97904</link>
      <description><![CDATA[A SERIES OF EXPERIMENTAL PROJECTS DESIGNED TO DEVELOP IMPROVED COMPACTION PROCEDURE AND FIELD CONTROL WERE CONDUCTED BY THE ASPHALT PAVING ASSOCIATION AND THE WASHINGTON STATE HIGHWAY DEPARTMENT. STUDIES INCLUDED VARIATION IN LIFT THICKNESS, COMPACTION TEMPERATURE, AND ROLLER WEIGHT. PNEUMATIC ROLLERS WERE COMPARED WITH STEEL FOR USE IN BREAKDOWN. RESULTS OF THIS STUDY ARE BRIEFLY SUMMARIZED. THERE WAS A GENERAL DECREASE IN PERMEABILITY WITH AN INCREASE IN PASSES, TIRE PRESSURE, ROLLER WEIGHT AND DENSITY. A LARGE CHANGE IN THE PERMEABILITY READING REFLECTED A CORRESPONDING CHANGE IN DENSITY. NUCLEAR DENSITY DEVICES, THE WATER PERMEABILITY TEST, AND THE AIR PERMEABILITY TEST ARE PROCEDURES AVAILABLE NOW TO EVALUATE THE EFFECTIVENESS OF COMPACTION.]]></description>
      <pubDate>Mon, 05 Sep 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/97904</guid>
    </item>
  </channel>
</rss>