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    <title>Transport Research International Documentation (TRID)</title>
    <link>https://trid.trb.org/</link>
    <atom:link href="https://trid.trb.org/Record/RSS?s=PHNlYXJjaD48cGFyYW1zPjxwYXJhbSBuYW1lPSJkYXRlaW4iIHZhbHVlPSJhbGwiIC8+PHBhcmFtIG5hbWU9InN1YmplY3Rsb2dpYyIgdmFsdWU9Im9yIiAvPjxwYXJhbSBuYW1lPSJ0ZXJtc2xvZ2ljIiB2YWx1ZT0ib3IiIC8+PHBhcmFtIG5hbWU9ImxvY2F0aW9uIiB2YWx1ZT0iMCIgLz48L3BhcmFtcz48ZmlsdGVycz48ZmlsdGVyIGZpZWxkPSJpbmRleHRlcm1zIiB2YWx1ZT0iJnF1b3Q7U2V0dGluZyAgKCBjb25jcmV0ZSApICZxdW90OyIgb3JpZ2luYWxfdmFsdWU9IiZxdW90O1NldHRpbmcgKGNvbmNyZXRlKSZxdW90OyIgLz48L2ZpbHRlcnM+PHJhbmdlcyAvPjxzb3J0cz48c29ydCBmaWVsZD0icHVibGlzaGVkIiBvcmRlcj0iZGVzYyIgLz48L3NvcnRzPjxwZXJzaXN0cz48cGVyc2lzdCBuYW1lPSJyYW5nZXR5cGUiIHZhbHVlPSJwdWJsaXNoZWRkYXRlIiAvPjwvcGVyc2lzdHM+PC9zZWFyY2g+" rel="self" type="application/rss+xml" />
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    <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>
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    <item>
      <title>Characterizing Field and Laboratory Performance of Cementitious Partial Depth Repair Materials</title>
      <link>https://trid.trb.org/View/1125218</link>
      <description><![CDATA[Partial depth repair (PDR) is an essential preventative maintenance treatment for concrete pavements. PDR process typically replaces spalled or deteriorated concrete when the damage does not extend beyond the top one-third of the slab and has not affected load transfer between slabs. This paper reports on a project to compare laboratory and field performance of several rapid setting cementitious concrete PDR materials and to establish selection criteria for materials and processes. A test section was selected on a major arterial in the City of Winnipeg in Manitoba to compare six candidate materials under the same environmental conditions and similar traffic loading. The field repairs were completed during the summer in 2010. Pre- and post installation condition surveys were conducted at the repair sites and the field evaluation will continue for the next two years. Laboratory tests were conducted at the University of Manitoba and include evaluation of thermal compatibility and the impact of freeze-thaw and wet-dry cycling on bond strength between repair materials and regular concrete. Results of laboratory and field evaluation will be used to develop performance-based selection criteria for PDR materials. The selection criteria will provide a cost-effective accelerated alternative to full-scale field studies, and provide a timely response to progressive market changes and the availability of new products. For the covering abstract of this copnference see record control number 201111RT334E.]]></description>
      <pubDate>Mon, 09 Jan 2012 11:44:33 GMT</pubDate>
      <guid>https://trid.trb.org/View/1125218</guid>
    </item>
    <item>
      <title>SLAG CEMENTS</title>
      <link>https://trid.trb.org/View/1081944</link>
      <description><![CDATA[CEMENT PORTLAND AND BLAST-FURNACE SLAG MIXTURES, WHICH ARE PRODUCED BY THE SIMULTANEOUS GRINDING OF PORTLAND CEMENT CLINKER AND BASIC GRANULATED BLAST-FURNACE SLAG CLINKER ARE NOT OFTEN USED IN SWITZERLAND. PROPORTIONS USED IN COUNTRIES NEAR SWITZERLAND (GERMANY, AUSTRIA, FRANCE, ITALY) ARE GIVEN. THE MAIN REASON FOR THE USE OF THIS TYPE OF CEMENT IN THESE COUNTRIES IS THE HIGHLY DEVELOPED METALLURGIC INDUSTRY A BY-PRODUCT OF WHICH IS SLAG. ATTENTION IS DRAWN TO THE POOR BINDING CAPACITY OF THE SLAG. WHICH IS ACTIVE IN THE PRESENCE OF CEMENT. THE STRENGTH OF THE MIXTURE IS LOWER THAN THAT OF PURE CEMENT CONCRETE. HOWEVER, THE SLOW SETTING PROCESS AND THE LOW EMISSION OF HYDRATION HEAT HAVE SOME ADVANTAGES. THIS TYPE OF CEMENT HAS  A GOOD RESISTANCE TO SALTED AND SELENITIC WATER, AND TO AGGRESIVE CHEMICAL AGENTS. IT IS MAINLY USED FOR BULK CONCRETE (FOUNDATIONS, BRIDGE ABUTMENTS RETAINING WALLS, HARBOUR STRUCTURES).]]></description>
      <pubDate>Sun, 21 Nov 2010 18:56:12 GMT</pubDate>
      <guid>https://trid.trb.org/View/1081944</guid>
    </item>
    <item>
      <title>STABILIZATION OF CHALKY SOIL WITH GRANULATED SLAG</title>
      <link>https://trid.trb.org/View/1074970</link>
      <description><![CDATA[THIS ARTICLE DESCRIBES AN INVESTIGATION INTO TTHE POSSIBILITY OF USING CHALKY MATERIALS (SAND AND GRAVEL) , PARTICULARLY ABUNDANT IN PICARDIE AND CHAMPAGNE, IN ROAD CONSTRUCTION. IN THE PAST, THE UTILIZATION OF NON-STABILISED CHALKY MATERIALS RESULTED IN WEAR AND SENSITIVITY TO FROST; THUS THE STABILIZATION OF CHALKY SAND WITH GRANULATED SLAG , ASSUMING ADEQUATE COATING OF CHALK PARTICLES WITH THE SLAG, WAS SUCESSFULLY USED. VARIOUS FACTORS WERE STUDIED, SUCH AS PROPORTIONING AND REACTIVITY OF THE SLAG, COMPACTION RATIO OF SAMPLES, TIME-RELATED EVOLUTION OF MECHANICAL STRENGTH. RESULTS SHOW THAT ADEQUATE FINAL STRENGTH AND RATE OF SETTING CAN BE ACHIEVED IF  THE REACTIVITY AND THE PROPORTIONING ARE CAREFULLY CALCULATED, THE FINAL  STRENGTH AND RATE OF SETTING BEING THE TWO MOST IMPORTANT CHARACTERISTICS AS REGARDS FROST BEHAVIOUR. THE CONCLUSIONS REACHED IN THE STUDY WILL HAVE TO BE ADAPTED AS A FUNCTION OF THE DIFFERENT NATURE OF VARIOUS DEPOSITS. CHALKY MATERIALS STABILIZED WITH GRANULATED SLAG SHOULD ONLY BE USED IN THE CONSTRUCTION OF ROAD BASES OF LIGHTLY-TRAFFICKED ROADS (CHALKY SAND) OR HEAVILY-TRAFFICKED (CHALKY GRAVEL) .]]></description>
      <pubDate>Sun, 21 Nov 2010 14:50:01 GMT</pubDate>
      <guid>https://trid.trb.org/View/1074970</guid>
    </item>
    <item>
      <title>RESISTANCE TO SLIDING OF STEEL COATED IN CONCRETE AT THE BEGINNING OF HARDENING</title>
      <link>https://trid.trb.org/View/1074937</link>
      <description><![CDATA[WHEN A STEEL BAR COATED WITH CONCRETE IS SUBJECTED TO A PULL OUT FORCE, THE SLIDING CURVE PRESENTS SOME PARTICULAR FEATURES. THIS ARTICLE, WHICH IS  BASED ON THE STUDY OF NUMEROUS SLIDING CURVES, DEALS WITH THE INFLUENCE OF THE VARIOUS FACTORS WHICH GOVERN THE ADHESION BETWEEN STEEL AND CONCRETE DURING INITIAL SETTING AND HARDENING. A QUANTITATIVE DISTINCTION IS MADE  BETWEEN EACH ADHESION PARAMETER AND A BETTER KNOWLEDGE OF FAILURE MECHANISM IS OBTAINED. THE DIFFERENCE IN BEHAVIOUR BETWEEN FRESH AND HARDENED COECRETE IS DEMONSTRATED.]]></description>
      <pubDate>Sun, 21 Nov 2010 14:49:10 GMT</pubDate>
      <guid>https://trid.trb.org/View/1074937</guid>
    </item>
    <item>
      <title>COST OF THE THERMAL TREATMENT OF CONCRETE</title>
      <link>https://trid.trb.org/View/1074927</link>
      <description><![CDATA[BASED ON ACTUAL EXAMPLES, AN ANALYSIS IS PRESENTED OF THE COST OF LABOUR,  HEAT PRODUCTION, SUPPLIES, AND OF THE VARIOUS TREATMENTS USED: STEAM, ELECTRICITY, WARM AIR, HOT WATER. THE ACTUALIZED COST PER CUBIC METRE OF CONCRETE TREATED IS GIVEN TOGETHER WITH THE PERCENTAGE IN RELATION TO THE COST OF CUBIC METRE OF CONCRETE PRODUCED. THE THERMAL TREATMENTS ARE CLASSIFIED INTO 3 CATEGORIES: LOW, MODERATE, AND INTENSE HEAT, ACCORDING TO THE VALUE OF THE PRODUCT: RISE IN TEMPERATURE (IN CELSIUS DEGREES) BY DURATION OF TREATMENT IN HOURS. THE AVERAGE COST FOR EACH CATEGORY IS GIVEN.]]></description>
      <pubDate>Sun, 21 Nov 2010 14:48:46 GMT</pubDate>
      <guid>https://trid.trb.org/View/1074927</guid>
    </item>
    <item>
      <title>EFFECT OF SUGAR ON THE SETTING OF CEMENT. SUGAR ANALYSIS</title>
      <link>https://trid.trb.org/View/1074457</link>
      <description><![CDATA[TESTS WERE CARRIED OUT WITH A VIEW TO DETERMINING THE INFLUENCE OF SOME PURE SUGARS ON THE EVOLUTION IN THE SETTING OF 3 TYPES OF CEMENT. RESULTS SHOWED THAT IT IS EASY TO RETARD SETTING AT THE END OF THE SETTING PROCESS WITHIN CERTAIN TIME LIMITS. ON THE OTHER HAND, IT IS RATHER DIFFICULT TO OBTAIN A SYSTEMATIC RETARDATION AT THE BEGINNING OF SETTING. IT IS PARTICULARLY DIFFICULT WITH A BLAST-FURNACE SLAG CEMENT AND A CEMENT WITH A LOW C3A CONTENT; WITH A PORTLAND CEMENT WITH A HIGH C3A CONTENT, SOME PRODUCTS CAN RETARD THE BEGINNING OF SETTING. A STUDY WAS ALSO MADE OF THE INFLUENCE  OF LIGNOSULPHONATES ON SETTING. THE TESTS SHOWED THAT RETARDATION IS MAINLY DUE TO THE EFFECT OF SUGAR CONTAINED IN LIGNOSULPHONATES. FURTHER INVESTIGATIONS WERE CARRIED OUT INTO THE SEPARATION OF SUGARS, THEIR IDENTIFICATION AND DETERIORATION IN THE PRESENCE OF CEMENT.]]></description>
      <pubDate>Sun, 21 Nov 2010 14:35:48 GMT</pubDate>
      <guid>https://trid.trb.org/View/1074457</guid>
    </item>
    <item>
      <title>ACCELERATED HARDENING OF CONCRETE</title>
      <link>https://trid.trb.org/View/1072793</link>
      <description><![CDATA[THE AIM OF ANY ACCELERATED HARDENING PROCESS IS TO REDUCE THERMAL CURING TIME TO A MINIMUM AND TO OBTAIN MAXIMUM STRENGTH WITHOUT CAUSING ANY DAMAGE. EXPERIENCE HAS SHOWN THAT THE ASYMPTOTIC INCREASE IN STRENGTH IS ONE OF  THE BEST WAYS OF SHOWING THAT CONCRETE HAS ALL THE QUALITIES REQUIRED. AN UNQUESTIONABLE PROOF OF DAMAGE TO THE CONCRETE IS THE FACT THAT ITS STRENGTH REMAINS LOWER THAN THE NORMAL STRENGTH OF B28. THERE EXISTS HOWEVER THE POSSIBILITY OF AVOIDING THIS DANGER AND OF REACHING B28 STRENGTH AFTER 3,5 HOURS, THUS ENSURING PERFECT QUALITY AND GUARANTEEING THAT THE ADDITIONAL INCREASE IN STRENGTH WILL BE GREATER THAN THAT OF CONVENTIONAL CONCRETE. SEE ALSO IRRD ABSTRACT NO. 102109.]]></description>
      <pubDate>Sun, 21 Nov 2010 13:38:10 GMT</pubDate>
      <guid>https://trid.trb.org/View/1072793</guid>
    </item>
    <item>
      <title>GUIDELINES FOR THE MANUFACTURE OF CONCRETE WITH ACCELERATED HARDENING</title>
      <link>https://trid.trb.org/View/1072791</link>
      <description><![CDATA[THE PRESENT TREND IS TO REDUCE THE TIME OF MANUFACTURE OF PRECAST CONCRETE ELEMENTS FOR ECONOMIC REASONS. SUCH A CONCEPT IMPLIES MAXIMUM ACCELERATION OF THE HARDENING PROCESS. CONCRETE, WHICH IS OF SATISFACTORY MIX DESIGN, HAS A LOW WATER/CEMENT RATIO AND CONTAINS 550 PORTLAND CEMENT WITH A HIGH INITIAL STRENGTH, REACHES A COMPRESSIVE STRENGTH OF 100KP/CM2 AT A NORMAL TEMPERATURE AFTER 12 HOURS; AFTER 24 HOURS, THE COMPRESSIVE STRENGTH REACHES 300KP/CM2. THIS DEVELOPMENT IS RELATIVELY QUICK BUT IS HOWEVER INSUFFICIENT FOR MODERN MASS-PRODUCTION TECHNIQUES. THIS IS WHY EFFORTS HAVE BEEN MADE OVER A NUMBER OF YEARS TO OBTAIN CONCRETE HARDENING WITHIN A RANGE OF TEMPERATURES REACHED IN MINIMUM TIME. SEE ALSO IRRD ABSTRACT NO. 102109.]]></description>
      <pubDate>Sun, 21 Nov 2010 13:38:07 GMT</pubDate>
      <guid>https://trid.trb.org/View/1072791</guid>
    </item>
    <item>
      <title>ACCELERATED CURING METHODS FOR PRECAST CONCRETE ELEMENTS IN A WARM CLIMATE</title>
      <link>https://trid.trb.org/View/1072790</link>
      <description><![CDATA[THIS REPORT DEALS WITH ACCELERATED CURING TECHNIQUES IN HOT AND DRY COUNTRIES. BY TAKING ADVANTAGE OF SPECIAL CLIMATIC CONDITIONS, IT IS POSSIBLE TO ECONOMISE ON WATER AND CURING TIME. AMONG THE METHODS DESCRIBED AND TESTED ARE THE FOLLOWING: (1) EXPOSURE OF SAMPLES COVERED IN CHEAP PLASTIC MATERIAL TO SOLAR RADIATION, AND (2) USE OF CEMENT HYDRATION HEAT. SEE ALSO IRRD ABSTRACT NO. 102109.]]></description>
      <pubDate>Sun, 21 Nov 2010 13:38:06 GMT</pubDate>
      <guid>https://trid.trb.org/View/1072790</guid>
    </item>
    <item>
      <title>INFLUENCE OF THE ENVIRONMENT ON CONCRETE STRUCTURES IN ARGENTINA</title>
      <link>https://trid.trb.org/View/1072775</link>
      <description><![CDATA[THE AUTHOR RECALLS THAT BUILDING REGULATIONS HAVE ALWAYS IGNORED THE EFFECTS OF THE ENVIRONMENT ON CONCRETE STRUCTURES, ALTHOUGH IT CAUSES STRESSES  AND CRACKS AND SHOULD BE TAKEN INTO CONSIDERATION BY THE PLANNING ENGINEER. TEMPERATURE, RELATIVE MOISTURE CONTENT AND WIND VELOCITY AFFECT SHRINKAGE DURING THE SETTING AND HARDENING OF CONCRETE TOGETHER WITH THE VARIATIONS IN THE DIMENSIONS OF STRUCTURES. METEOROLOGICAL OBSERVATORIES ARE AN IMPORTANT SOURCE OF INFORMATION ON LOCAL ENVIRONMENTAL CONDITIONS. THE NEED  IS STRESSED OF ESTABLISHING A RELATION BETWEEN WEATHER CONDITIONS AND THEIR EFFECT, WITH A VIEW TO PLANNING CONCRETE STRUCTURES SUITABLE TO EACH LOCATION.]]></description>
      <pubDate>Sun, 21 Nov 2010 13:37:42 GMT</pubDate>
      <guid>https://trid.trb.org/View/1072775</guid>
    </item>
    <item>
      <title>SETTING OF GRANULATED SLAG UNDER ALKALINE ACTIVATION</title>
      <link>https://trid.trb.org/View/1071832</link>
      <description><![CDATA[THE SETTING MECHANISM OF GRANULATED SLAG IS SHOWN TO BE IN AGREEMENT WITH  THE THEORY DEVELOPED BY LE CHATELIER, ACCORDING TO WHICH THE ANHYDROUS BINDER CONSTITUENTS ARE DISSOLVED IN THE MIXING WATER AND GIVE RISE TO THE FORMATION OF HYDRATED COMPOUNDS OF LOW SOLUBILITY THAT CRYSTALLISE, THUS BONDING THE PARTICLES TOGETHER. THE NATURE OF THESE COMPOUNDS IS GOVERNED BY THERMODYNAMIC EQUILIBRIUM AND THEIR NUMBER BY THE RULE GOVERNING THE PHASES OF THE STATE OF EQUILIBRIUM. IF SODIUM IS USED AS AN ACTIVATING AGENT,  THREE HYDRATION PHASES WILL OCCUR, BUT ONLY TWO IF LIME OR QUICKLIME IS USED. X-RAYS SHOW THE NATURE OF THE COMPOUNDS. THE EVOLUTION TAKING PLACE IS LINKED TO THE LACK OF EQUILIBRIUM OF THE SLAG IMMERSED IN THE SOLUTION.  THIS LACK OF EQUILIBRIUM LEADS TO A PROGRESSIVE DISSOLUTION OF THE SLAG WHICH WAS OBSERVED BY MEANS OF ELECTRON MICROSCOPY. THE LATTER CLEARLY SHOWS THE ROLE PLAYED BY EACH TYPE OF HYDRATE. PHASE GRAPHS WERE USED TO EXPLAIN THE CHEMISTRY OF HYDRATION. CHARTS SHOWING THE EQUILIBRIUM OF THE CAO,  S102, AL203, H20 QUATERNARY SYSTEM WERE ALSO UTILIZED.]]></description>
      <pubDate>Sun, 21 Nov 2010 13:09:57 GMT</pubDate>
      <guid>https://trid.trb.org/View/1071832</guid>
    </item>
    <item>
      <title>REGARDING THE THERMAL SHRINKAGE OF GRAVEL STABILIZED WITH HYDRAULIC BINDERS AND MIXED TREATMENT</title>
      <link>https://trid.trb.org/View/1068922</link>
      <description><![CDATA[THIS ARTICLE CONSISTS OF A DISCUSSION ON AN ARTICLE PUBLISHED IN THE BULL  LIAISON LAB PONTS CHAUSS NO. 78 (SEE IRRD ABSTRACT NO. 103300) ON THE "STUDY OF MIXED STABILIZATION BY MEANS OF THE THERMAL SHRINKAGE TEST".  IT EXPLAINS WHY THERE EXISTS A DIFFERENCE BETWEEN THE RESULTS OF THEORETICAL CALCULATIONS AND THE OBSERVATIONS MADE ON EXPERIMENTAL SITES.  IT SHOWS THE  IMPORTANCE OF THE STAGES: BEFORE SETTING, BEGINNING OF SETTING AND END OF SETTING ON THE MODE OF CRACKING.]]></description>
      <pubDate>Sun, 21 Nov 2010 11:29:39 GMT</pubDate>
      <guid>https://trid.trb.org/View/1068922</guid>
    </item>
    <item>
      <title>POSSIBILITIES OF USING MAGNESIUM LIME IN ROAD CONSTRUCTION</title>
      <link>https://trid.trb.org/View/1068919</link>
      <description><![CDATA[THIS SHORT ARTICLE COMMENTS ON AN ARTICLE PUBLISHED IN NO. 82 OF THE BULL  LIAISON LAB PONTS CHAUSS (SEE IRRD ABSTRACT NO. 104121) AND DEALS MAINLY  WITH THE USE OF MAGNESIUM AND DOLOMITIC LIME AS COATING FINES OR AS ACTIVATING AGENT IN THE SETTING OF GRAVEL-SLAG MIXTURES. THE AUTHORS ARE OF THE OPINION THAT THE USE OF FINES IN COATING IS POSSIBLE; AS A SETTING AGENT, IF THE LIME IS OVERBAKED, IT CAUSES SWELLING DUE TO PROGRESSIVE HYDRATION.]]></description>
      <pubDate>Sun, 21 Nov 2010 11:29:32 GMT</pubDate>
      <guid>https://trid.trb.org/View/1068919</guid>
    </item>
    <item>
      <title>THE MOVEMENT OF WATER IN LIGHTWEIGHT AGGREGATE CONCRETE AND ITS INFLUENCE ON THE SHRINKAGE AND THE SIMPLE STRENGTH OF THE CONCRETE</title>
      <link>https://trid.trb.org/View/1068587</link>
      <description><![CDATA[THIS PAPER CONSISTS OF A SUMMARY OF THE COMMUNICATION PRESENTED BY THE TOULOUSE SECTION AT THE MEETING OF 14TH NOVEMBER 1974 OF THE FRENCH SOCIETY FOR MINEROLOGY AND CRYSTALLOGRAPHY.  THE MOVEMENTS OF WATER IN LIGHTWEIGHT  AGGREGATE CONCRETE HAVE BEEN OBSERVED: THE INITIAL ABSORPTION OF THE MIXING WATER BY THE AGGREGATES, RESTITUTION OF THE WATER IN THE COURSE OF SETTING.  THE DOUBLE MOVEMENT OF WATER HAS A DIRECT INFLUENCE ON THE SHRINKAGE OF LIGHTWEIGHT CONCRETE.  THE INITIAL STRENGTH OF THE CONCRETE MADE WITH  SATURATED AGGREGATES BEFORE THEIR INCORPORATION IN THE CONCRETE IS HIGHER THAN THAT OF CONCRETE MADE WITH DRY AGGREGATES.]]></description>
      <pubDate>Sun, 21 Nov 2010 11:20:31 GMT</pubDate>
      <guid>https://trid.trb.org/View/1068587</guid>
    </item>
    <item>
      <title>EXPERIMENTAL AND THEORETICAL STUDY OF CALCIUM OXIDE, ALUMINIUM OXIDE, SILICA AND WATER</title>
      <link>https://trid.trb.org/View/1068249</link>
      <description><![CDATA[THE CALCIUM OXIDE, ALUMINIUM OXIDE, SILICA AND WATER SYSTEM GOVERNS THE FORMATION OF THE MAIN HYDRATES INFLUENCING THE SETTING OF VARIOUS HYDRAULIC  BINDERS.  THE GENERAL SHAPE OF THE SOLUBILITY CHART WAS DETERMINED BY USING THE SOLUBILITY THEORY, THE VALIDITY OF WHICH HAS BEEN TESTED ON TWO KNOWN SYSTEMS.  THE EXACT SHAPE WAS DETERMINED EXPERIMENTALLY: IT IS CHARACTERIZED BY THE INCOMPATIBILITY OF THE HYDRATED GEHLENITE AND CALCIUM HYDROXIDE.]]></description>
      <pubDate>Sun, 21 Nov 2010 11:05:32 GMT</pubDate>
      <guid>https://trid.trb.org/View/1068249</guid>
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