<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>ANALYSIS OF THE PERFORMANCE OF DEAD-WEIGHT ROLLERS COMPACTING SOIL</title>
      <link>https://trid.trb.org/View/366495</link>
      <description><![CDATA[In this report the methods used to analyse the compaction process using pneumatic-tyred rollers are developed and applied to smooth-wheeled, sheepsfoot and grid rollers. Calculations again using a shear stress with depth approach were applied on the cohesive soils while a bearing capacity method was used on the granular soils.  Comparison of the calculated densities with measured results showed generally good agreement and that the idealisations and analyses developed were capable of determining the levels of compaction achieved by dead-weight rollers.  (Author/TRRL) (Author/TRRL)]]></description>
      <pubDate>Fri, 31 Jul 1992 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/366495</guid>
    </item>
    <item>
      <title>PILE TESTING USING RAKED UNDER-REAMED PILES</title>
      <link>https://trid.trb.org/View/145738</link>
      <description><![CDATA[A simple set-up for conducting high capacity pile load tests, using raker under-reamed piles as anchors, is described.  The technique requires little space and eliminates the need for heavy joists and kentledge in addition to giving safety benefits and effecting savings in cost and time.  The paper also highlights the load-carrying capacity of multi-under-reamed piles in compression and as anchors. /Author/]]></description>
      <pubDate>Wed, 07 Nov 1979 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/145738</guid>
    </item>
    <item>
      <title>ROLLED GUSSASPHALT FOR THE REPAIR OF SURFACE RUTS</title>
      <link>https://trid.trb.org/View/61028</link>
      <description><![CDATA[Since 1972 rolled gussasphalt has been used for the repair of surfacings with ruts.  All these surfacings had a good skidding resistance from the beginning and possess a very rough surface texture.  This roughness may be reduced by the use of chippings 2/5 as gritting material.  It is not possible to say how far the skidding resistance of the surfacing is thus influenced.  For the first time in the summer of 1975 a section of gritting material was rolled with a smooth wheel roller only.  It was quite easy to see that a small quantity was rolled in.  The surface of the surfacing layer is as rough as is the case with the introduction of a combination of rollers.  The authors believe that the technique described here is a contribution to the repair of surface deformations, and are of the opinion that this method will find general application in the laying of surfacing layers of qussasphalt. /TRRL/]]></description>
      <pubDate>Wed, 28 Jun 1978 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/61028</guid>
    </item>
    <item>
      <title>BEHAVIOUR OF PEOPLE ON THE MOVE</title>
      <link>https://trid.trb.org/View/54977</link>
      <description><![CDATA[This thesis is concerned with behaviour of a kind that most people are apt to show at one time or another, but which is considered deviant by our society, and which generally falls under the heading of "minor offence" or "misdemeanour".  The research is concentrated not only on the frequency of such behaviour but also on its underlying motivational factors and consequences, especially where these might influence its development into more serious offences.  The study is divided into three parts: a theoretical part, an empirical section and a section concerned with general policy. In the theoretical part the aim is to prove that socio-psychological theories can be meaningfully applied to criminology and further that human behaviour is amenable to change.  The empirical section concerns types of behaviour which one may encounter daily, that of people on the move. Here moving by means of private transport can be differentiated from moving by means of public transport.  In the final section a number of policies for reducing the frequency rate of deviant behaviour are suggested. /TRRL/]]></description>
      <pubDate>Tue, 27 Dec 1977 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/54977</guid>
    </item>
    <item>
      <title>SURFACE DRESSING: A SURVEY OF WINDSCREEN DAMAGE</title>
      <link>https://trid.trb.org/View/22366</link>
      <description><![CDATA[Questionnaires about the rate of windscreen breakage on new surface dressings on heavily trafficked roads (mostly rural) were sent in March 1971 to selected county authorities. An analysis of data received from eleven counties shows the extent of the problem. The greatest number of breakages occurred in the first week after laying the dressings and the total was independent of the size of the chipping used within the range 11 MM to 12.7 MM. Approximately three windscreens were broken for every 100,000 vehicle kilometres during this first week. In the next three week period the rate of breakage was 0.41 and thereafter was little different on the sections which had been dressed from that on untreated roads (some 0.33 breakages for 100,000 vehicle kilometres). Significantly higher rates of breakage were found on surface dressed sites longer than 3 Km than on shorter sites. No conclusive evidence was found to suggest improved performance with either lightly coated or uncoated chippings. Contrary to expectations, lower leves of windscreen breakage were found on sites where steel-tyred rollers were used in preference to rubber-tyred rollers. The effect of using steel-tyred rollers on surface texture depth (an important factor in maintaining resistance to skidding at high speeds) requires further investigation. /Author/TRRL/]]></description>
      <pubDate>Tue, 30 Sep 1975 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/22366</guid>
    </item>
    <item>
      <title>MACHINES AND EQUIPMENT FOR COMPACTION</title>
      <link>https://trid.trb.org/View/25679</link>
      <description><![CDATA[The availability of compaction equipment is constantly increasing.  Equipment can be selected to deal with soil types ranking from cohesive soil and loam to rock fill. static and dynamic compaction machines are described with reference to their possible uses; mention is made of smooth-wheeled, sheepsfoot and vibrating rollers and tamping equipment, the latter being of particular use for the compaction of trenches.  Other equipment mentioned includes: sheepsfoot vibrating rollers, polygon disc wheel rollers, kneading compactors, rubbish compactors, smooth and rubber-tyred rollers with variable pressure, dropping weight tampers, internal combustion tampers and electrical tampers, roller trains and rollers with various types of drive.  It pointed out that over 130 types of vibrating roller and over 80 different vibrators are on the market.]]></description>
      <pubDate>Tue, 08 Apr 1975 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/25679</guid>
    </item>
    <item>
      <title>VIBRATORY COMPACTION</title>
      <link>https://trid.trb.org/View/140303</link>
      <description><![CDATA[This article reviews the various types of vibratory compaction machines: smooth-wheeled vibrating roller sheeps foot roilers, rollers with movable shoes fixed to the wheels.  A study is made of each type of machine and of its availability on the market.  The theory of vibratory compaction is briefly summarized and attention drawn to the role played by the expansion pressure and expansion property of the materials compacted.]]></description>
      <pubDate>Thu, 06 Mar 1975 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/140303</guid>
    </item>
    <item>
      <title>GUIDE TO COMPACTION AND COMPACTION PLANT</title>
      <link>https://trid.trb.org/View/139747</link>
      <description><![CDATA[Present trends in thought and practice on compaction of soils, road subgrades and bases are discussed in some detail in a 20-page booklet titled "Compaction" by B. G. Manton, B.Sc., A.M.I.C.E., M.I.H.E., being the second in the Highways and Public Works series of design and construction handbooks. The booklet first reviews the basic theory of compaction supported by graph and formulae. The Ministry of Transport specifications and requirements are then outlined and discussed followed by a consideration of work carried out by the Road Research Laboratory and its findings. The main types of compacting plant are described and illustrated with comments on their particular applications, giving many useful guideline tables founded on practical experience. Plant groups discussed are smooth-wheeled rollers, pneumatic-tyred rollers, sheepsfoot-rollers, and vibratory compactors. A further section discusses briefly the compaction of bituminous materials, concrete, lean mix, and soil cement. The booklet concludes with a directory of compaction plant manufacturers which gives the main specifications and operating capacities of currently available equipment. This publication should prove a quick and useful aid not only to highway engineers either experienced or inexperienced, but also a valuable ready reference for contractors' engineers and site agents and for plant hirers who have to assemble compaction teams for a specified performance. Copies of "Compaction" may be obtained from the publishers, Building & Contract Journals Ltd., 32 Southward Bridge Road, London, S.E.1., price 5s. 6d post free, cash with order.]]></description>
      <pubDate>Thu, 19 Dec 1974 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/139747</guid>
    </item>
    <item>
      <title>CONTROL OF THE COMPACTION OF ASPHALTIC CONCRETE BY MEANS OF THE GAMMADENSITOMETER</title>
      <link>https://trid.trb.org/View/100111</link>
      <description><![CDATA[THE FIXED G.D.F. 30 GAMMADENSITOMETER FACILITATES POINT BY POINT MEASUREMENTS WITH A RELATIVE ACCURACY OF PLUS OR MINUS 1 PER CENT OF THE ABSOLUTE VALUE OF THE BULK DENSITY OF THE BITUMINOUS MIXTURE STUDIED. IT IS BASED ON THE PRINCIPLE OF GAMMA RAY DIFFUSION IN MATERIALS. THE NON- DESTRUCTIVE MEASUREMENTS ARE MADE BY PLACING THE APPARATUS ON THE SURFACE OF THE MATERIAL. A STUDY IS MADE OF THE INFLUENCE OF THE TEMPERATURE ON RESULTS OF MEASUREMENTS TAKEN ON HOT-COATED MATERIALS LAID AT 140 AND 150 DEGREES C. A CALIBRATION OF THE COMPACTION WAS CONDUCTED ON THE RN 14, ON A 0/10 ASPHALTIC CONCRETE PLACED ON A 6 CM-THICK LAYER COMPACTED WITH A PNEUMATIC-TIRED ROLLER AND SMOOTH-WHEELED ROLLER. AN ASPHALTIC CONCRETE 10 CM-THICK BASECOURSE WAS THEN COMPACTED WITH (1) A VIBRATING ROLLER FOLLOWING PNEUMATIC-TIRED ROLLERS AND SMOOTH-WHEELED ROLLERS, AND (2) BY THE GAMMADENSITOMETER 30 AND THE SMALL VIBRATORY SHOE ARE GIVEN AND SHOW THE POSSIBILITIES OFFERED FOR THE CONTROL OF THE APPLICATION OF BITUMINOUS MIXTURES. /TRRL/]]></description>
      <pubDate>Sat, 22 Dec 1973 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/100111</guid>
    </item>
    <item>
      <title>A FIELD STUDY ON THE SPEED AND ECONOMICS OF EMBANKMENT COMPACTION</title>
      <link>https://trid.trb.org/View/123569</link>
      <description><![CDATA[EVEN THOUGH THE ADVANTAGES OF COMPACTION OF SOILS IN VARIOUS STAGES OF ROADS AND RUNWAYS CONSTRUCTION HAVE BEEN ACCEPTED IN PRINCIPLE, IT HAS NOT YET FOUND FAVOR WITH THE PRACTICING ENGINEERS. THE REASONS GENERALLY GIVEN FOR NOT ADOPTING IT ON A LARGE-SCALE ARE THE SCARCITY OF MACHINERY AND LACK OF FACILITIES FOR QUALITY CONTROL. AN ATTEMPT HAS BEEN MADE IN THIS PAPER TO GO INTO THIS QUESTION IN DETAIL, BY LAYING FIELD EXPERIMENTS WITH A VIEW TO FINDING OUT THE MAXIMUM OUTPUT OF A ROLLER AND THE CORRESPONDING NUMBER OF MANUAL LABOR REQUIRED TO FEED IT. THE PAPER PRESENTS THE PROCEDURE FOR ECONOMIZING THE COST EMBANKMENT COMPACTION. IT HAS ALSO BEEN SHOWN THAT ABOUT 350 LABORERS ARE REQUIRED TO KEEP THE ROLLER FULLY ENGAGED FOR ABOUT 8 HOURS. IT HAS FURTHER BEEN SHOWN THAT THE NUMBER OF LABORERS CAN BE SUBSTANTIALLY REDUCED IF BORROW OPERATIONS ARE CARRIED OUT MECHANICALLY. /AUTHOR/]]></description>
      <pubDate>Tue, 17 Jul 1973 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/123569</guid>
    </item>
    <item>
      <title>COMPACTION CHARACTERISTICS OF SMOOTH WHEELED AND VIBRATING ROAD ROLLERS</title>
      <link>https://trid.trb.org/View/109936</link>
      <description><![CDATA[THE REPORT DESCRIBES COMPARATIVE FIELD STUDIES OF SMOOTH WHEELED AND VIBRATING ROAD ROLLERS TO ASSESS THE PERFORMANCE CARRIED OUT IN TERMS OF COMPACTION OF SOILS, WATER-BOUND MACADAM, AND BITUMINOUS SURFACES. THE RESULTS INDICATE THAT WHILE THE VIBRATING ROLLER IS VERY EFFECTIVE ON NON-COHESIVE SOILS AND ON WATER-BOUND MACADAM. THE SMOOTH WHEELED ROAD ROLLER IS EFFECTIVE IN COMPACTING PRE-MIXED ASPHALT MACADAM. /TRRL/]]></description>
      <pubDate>Tue, 17 Apr 1973 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/109936</guid>
    </item>
    <item>
      <title>THE TECHNICAL ASPECTS OF COMPACTION IN EARTHMOVING AND ROAD CONSTRUCTION</title>
      <link>https://trid.trb.org/View/117982</link>
      <description><![CDATA[THIS PAPER DESCIBES FIELD TESTS CARRIED OUT WITH FOUR TYPES OF ROLLER: STEEL WHEEL ROLLERS WITH A STATIC EFFECT, VIBRATORY ROLLERS WITH A DYNAMIC EFFECT, RUBBER-TIRED ROLLERS WITH STATIC AND KNEADING EFFECTS, AND VIBRATORY SHEEPSFOOT ROLLERS WITH DYNAMIC AND KNEADING EFFECTS. RESULTS OF THESE TESTS INDICATED THAT THESE TESTS INDICATED THAT THE EXPRESSION "LINEAR ROLLER PRESSURE" IS A REPRESENTATIVE QUANTITY INDICATIVE OF THE COMPACTIVE ABILITY OF STATIC WHEEL ROLLERS. THE COMPACTION ABILITY OF VIBRATORY ROLLERS DEPENDS ON THE TYPE OF VIBRATOR AND THE TYPE OF SOIL. THE TERM EQUIVALENT COMPACTIVE FORCE" SHOULD NOT BE USED TO EXPRESS COMPACTIVE ABILITY OF VIBRATORY ROLLERS UNLESS THE MATERIAL IS ALSO SPECIFIED. THE COMPACTIVE EFFECT OF RUBBER-TIRED ROLLERS DEPENDS UPON WHEEL LOAD AND THE SIZE OF THE CONTACT AREA. FOR THE COMPACTION OF BITUMINOUS LAYERS VIBRATORY AND RUBBER-TYRED ROLLERS GIVEN THE BEST RESULTS. /TRRL/]]></description>
      <pubDate>Sun, 11 Jun 1972 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/117982</guid>
    </item>
    <item>
      <title>POROUS SAND AND SKIDDING RESISTANCE /IN GERMAN/</title>
      <link>https://trid.trb.org/View/110653</link>
      <description><![CDATA[TESTS CARRIED OUT ON ROAD CONSTRUCTION SITES IN BAVARIA SHOWED THAT POROUS SAND SCATTERED ONTO A HOT BITUMINOUS SURFACING INCREASES INITIAL SKIDDING RESISTANCE OF THE SURFACING. FIRST THE FINE ASPHALTIC CONCRETE SURFACING CONTAINING BASALT CHIPPINGS WAS COMPACTED BEHIND THE FINISHER BY SMOOTH-WHEELED ROLLERS. THEN BITUMINIZED POROUS SAND WAS SPREAD ON THE HOT SURFACING AND ROLLED IN WITH A RUBBER-TIRED ROLLER. THE RESULT WAS A FINE, ROUGH TEXTURE SIMILAR TO SAND PAPER, THE SLIDING COEFFICIENT OF WHICH WAS ABOUT 0.4. THE TEST ARE TO BE CONTINUED. /FG/RRL/]]></description>
      <pubDate>Sun, 18 Apr 1971 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/110653</guid>
    </item>
    <item>
      <title>COMPACTION NEEDN'T BE TOUGH</title>
      <link>https://trid.trb.org/View/119511</link>
      <description><![CDATA[THE QUESTION OF SOIL COMPACTION FAILURES AND WHY THEY HAPPEN IS DISCUSSED. IT IS CONSIDERED THAT A BETTER UNDERSTANDING OF THE FUNDAMENTALS OF COMPACTION, COUPLED WITH CLOSER LIAISON WITH THE ENGINEERS PROBLEMS WOULD LEAD TO MORE EFFICIENT CONSTRUCTION TECHNIQUES. ADVICE IS GIVEN ON THE SELECTION OF EQUIPMENT, ROLLING TIME AND MOISTURE CONTENT OF SOIL BEFORE COMPACTION. REFERENCE IS MADE TO SPRINKLER SYSTEMS AND LIGHTWEIGHT ALUMINUM PIPES. TABULATED FIELD RESULTS SHOW THAT PNEUMATIC COMPACTION WITH TIRE PRESSURES IN THE 80 LB/SQ IN RANGE IS FAST AND ECONOMICAL. /RRL/]]></description>
      <pubDate>Thu, 01 Apr 1971 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/119511</guid>
    </item>
    <item>
      <title>THE PROBLEM OF COMPACTING HIGH-GRADE BITUMINOUS SURFACINGS AND ROADBASES /IN GERMAN/</title>
      <link>https://trid.trb.org/View/95166</link>
      <description><![CDATA[THE AUTHOR FIRST RECALLS THE RESULTS OF HIS EARLIER RESEARCH WORK AND LABORATORY FINDINGS WITH REGARD TO THE ROLLING PROCESS, AND PARTICULARLY THE COURSE OF STRESS UNDER THE ROLLER BOTH IN THE DIRECTION AND CROSSWISE TO THE DIRECTION OF DRIVING. THESE ARE FOLLOWED BY REFERENCES TO THE COMPACTION OF BITUMINOUS ROADBASES AND SURFACINGS WITH SMOOTH-WHEELED ROLLERS AND RUBBER TIRED ROLLERS, THE USE OF WHICH IS RECOMMENDED. /FG/RRL/]]></description>
      <pubDate>Wed, 26 Aug 1970 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/95166</guid>
    </item>
  </channel>
</rss>