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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>
    <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>
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      <title>Transport Research International Documentation (TRID)</title>
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      <link>https://trid.trb.org/</link>
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    <item>
      <title>THE PROPERTIES OF SILICEOUS BARIUM CEMENTS IN DEPENDENCE UPON THEIR CLINKER CONSTITUENTS</title>
      <link>https://trid.trb.org/View/101584</link>
      <description><![CDATA[AFTER A SHORT EXPLANATION OF THE DIFFERENCES IN THE CONSTITUTION OF SILICEOUS AND ALUMINOUS BARIUM CEMENTS, THE MINERALOGICAL CONSTITUENTS OF SILICEOUS BARIUM CEMENT CLINKERS (BARIUM ALITE, BARIUM BELITE, BARIUM CELITE, TRIBARIUM SULFATE, DIBARIUM SULFATE, TRIBARIUM ALUMINATE, BARIUM ALUMINATE, TETRABARIUM ALUMINATE FERRITE, DIBARIUM FERRITE) AND THE EVOLUTION OF THEIR FORMATION DURING THE BURNING PROCESS ARE DESCRIBED. THE PRINCIPLE OF THE METHOD FOR CALCULATING THE POTENTIAL PHASE COMPOSITION OF CLINKER IS INDICATED, THE RESULTS OF MICROSCOPIC STUDIES ARE REPORTED AND THE EFFECTS OF VARIOUS MINERALOGICAL CONSTITUENTS OF SILICEOUS BARIUM CEMENTS ON THEIR HYDRAULIC PROPERTIES ARE DISCUSSED. FROM COMPARATIVE CONSIDERATIONS RELATING TO POTENTIAL PHASE COMPOSITIONS OF SILICEOUS CALCIUM, STRONTIUM AND BARIUM CEMENTS, IMPORTANT CONCLUSIONS ON THEIR USEFULNESS AND QUALITY AMELIORATION ARE DEDUCED. /AUTHOR/]]></description>
      <pubDate>Fri, 15 Jul 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/101584</guid>
    </item>
    <item>
      <title>COMPARATIVE INVESTIGATION OF MINERAL FILLERS IN A STREET- MARKING PAINT</title>
      <link>https://trid.trb.org/View/108127</link>
      <description><![CDATA[CRYSTALLIZED CA CARBONATES SUCH AS 2.5 MU MILLICARB, 5 MU OMYA LP/2, 14 MU CALIBRITE, NORMAL WHITENING AND OTHER MINERAL FILLERS OF DIFFERENT CHEMICAL COMPOSITION AND STRUCTURE, SUCH AS NATURAL BASO4, DOLOMITE, TALC, CLAY, AND QUARTZ POWDER WERE INVESTIGATED WITH REGARD TO THEIR VISCOSITY, STORAGE STABILITY, SEDIMENTATION, DISPERSION, DRYING TIME, WHITENING DEGREE, COVERING POWER, ABRASION RESISTANCE, WATER ABSORPTION, SHADE FASTNESS, BLEEDING ON BITUMEN, HOT-COLD SHOCK, AND GENERAL APPEARANCE. THE TYPE, THE GRAIN DISPERSION, AND THE STRUCTURE OF THE MINERAL FILLERS TESTED HAD A SPECIAL EFFECT ON THE DURABILITY OF THE PAINT. NO PRACTICAL INFLUENCE ON THE STABILITY TO STORAGE, THE WATER RESISTANCE, THE BLEEDING ON BITUMEN, AND THE HOT- COLD SHOCK WAS FOUND. THE BEST RESULTS WERE OBTAINED WITH MILLICARB, A CRYSTALLIZED CALCIUM CARBONATE WITH AN AVERAGE STATISTICAL GRANULATION OF 2.5 MU AND A GRAIN DISPERSION OF 1-8 MU. QUARTZ POWDER WAS THE POOREST FILLER INVESTIGATED. /AUTHOR/]]></description>
      <pubDate>Mon, 24 Jan 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/108127</guid>
    </item>
    <item>
      <title>IMPROVED CHARACTERISTICS IN SULFATE SOILS TREATED WITH BARIUM COMPOUNDS BEFORE LIME STABILIZATION</title>
      <link>https://trid.trb.org/View/359114</link>
      <description><![CDATA[Some sulfate-bearing soils stabilized with calcium hydroxide (lime) have developed heave over periods of time.  This heave is thought to result from reactions of soluble sulfates, calcium hydroxide, and free aluminum in the soil or groundwater, or both, to form ettringite (3CaO.Al2O3.3CaSO4.32H2O), a highly water-expansive mineral. Laboratory testing, using the California bearing ratio (CBR) method, has indicated increased bearing strength values and decreased swell when barium hydroxide or barium chloride was added to sulfate-rich soils before lime application.  A California soil containing sodium sulfate had increased strength values when either barium compound was used with lime as compared with specimens with lime only.  A barium hydroxide treatment followed by lime application to a Texas soil containing sodium sulfate was successful, showing increased CBR values and a decrease in percent swell.  Potential volume change tests were conducted on a Colorado soil and the California and Texas soils using lime only and lime added to soils treated with barium hydroxide or barium chloride.  The barium hydroxide plus lime treatment showed a marked decrease in swell pressure when compared with lime-only treatment.  The mix of barium chloride plus lime decreased in swell pressure, but not as significantly as the mix of barium hydroxide plus lime.  The presence of ettringite in the treated soils was determined using scanning electron microscopy.  Ettringite formation was not detected in the California or Colorado soils for either combination of barium hydroxide or barium chloride plus lime.  The Texas soil contained an abundance of ettringite in the mix of barium chloride plus lime, and it was present, but sparse, in the mix of barium hydroxide plus lime.]]></description>
      <pubDate>Sat, 31 Aug 1991 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/359114</guid>
    </item>
    <item>
      <title>DEVELOPMENT OF STRENGTH IN CEMENTS</title>
      <link>https://trid.trb.org/View/169625</link>
      <description><![CDATA[This report is divided into two parts: Portland and Sorel Cements. Portland Cement: The production of doped belite (dicalcium silicate) clinkers can be a prospective way of saving energy in cement production. Barium sulfate (BaSO sub-4), calcium tribasic phosphate (Ca sub-5 (PO sub-4) sub-3 (OH), and vanadium oxide (V sub-2 0 sub-5) stabilize Beta-, alpha' and alpha modifications of belite (C sub-2 S). The aplha' modification shows better strength development than the Beta-C sub-2 S. Strength develops more slowly in Ca sub-5 (PO sub-4) sub-3 OH than in BaSO sub-4, stabilized belites. Also, belite clinkers doped with BaSO sub-4 attain greater strength than belites without BaSO sub-4. Sorel Cement: The reaction products are dependent on the proportion of reactants (MgO, MgC1 sub-2, and H sub-2 O) and on MgO activity. Hardened cements achieve the best strength development and stability when phase 5 (5Mg (OH) sub-2 .MgC1 sub-2 .(H sub-2 O) is the main reaction product.  Phosphate addition, especially soluble phosphates, which are more effective, improves the cement's resistance to the effects of water. (FHWA)]]></description>
      <pubDate>Tue, 22 Dec 1981 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/169625</guid>
    </item>
    <item>
      <title>REVIEW OF MOTORCYCLE STEERING BEHAVIOR AND STRAIGHT LINE STABILITY CHARACTERISTICS</title>
      <link>https://trid.trb.org/View/78586</link>
      <description><![CDATA[The practice and theory of motorcycle steering behaviour are reviewed.  The description of the practice relies partly on the small amount of scientific experimental work which has been completed and partly on the anecdotal.  An attempt is made to describe the current state of understanding of the subject particularly from the machine alone point of view, but some discussion of rider abilities and requirements is included.]]></description>
      <pubDate>Fri, 29 Dec 1978 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/78586</guid>
    </item>
    <item>
      <title>THE DURABILITY OF CEMENT AND CONCRETE IN SEA WATER</title>
      <link>https://trid.trb.org/View/98739</link>
      <description><![CDATA[THE PROBLEM OF SEA WATER IS REVIEWED ACCORDING TO THE ATTACKING ION. SULFATE ATTACK IN ADDITION TO THE INITIAL EXPANSIVE FORMATION OF CRYSTALLINE CALCIUM ALUMINOSULFATE, A SECOND NONCRYSTALLINE GEL PHASE, WAS SHOWN BY DIFFERENTIAL THERMAL ANALYSIS TO OCCUR IN LATER STAGES OF DESTRUCTION. THE ADDITION OF SODIUM HYDROXIDE TO THE ATTACKING SULFATE SOLUTION RESULTED IN SLOWING THE SULFATE ATTACK ON SHORT-TERM TESTS (2 YEARS). THE ADDITION OF SODIUM HYDROXIDE TO THE MIX WAS NOT EFFECTIVE. THE ADDITION OF BARIUM CARBONATE TO THE CEMENT SLOWED SULFATE ATTACK BY FORMULATION OF BARIUM SULPHATE ON EXTERNAL REGION OF BARS. THE USE OF SODIUM HYDROXIDE IN THE MIX DESTROYED THE BARIUM CARBONATE PROTECTION. THE CHLORIDE ATTACK IN THE FORMATION OF CALCIUM CHLOROALUMINATE PROVED A DESTRUCTIVE FACTOR IN THAT SULFATE ATTACK WAS ACCELERATED. IN THE MAGNESIUM ATTACK THE MAGNESIUM IONS ATTACK BY PRECIPITATING MAGNESIUM HYDROXIDE AND SOFT MAGNESIUM SILICATES. MAGNESIUM IS OF MINOR IMPORTANCE BECAUSE OF ITS LOW CONCENTRATION IN SEA WATER. DEAD SEA WATER IN THE MIX ENHANCED TEST BAR STABILITY TO MAGNESIUM ATTACK. PRACTICAL CONSTRUCTION SHOULD BE BEST QUALITY PORTLAND CEMENT A.S.T.M. I OR V CONTROLLED RIGIDITY TO ELIMINATE CRACKS, JOINTS, AND INHOMEGENEITY. THE USE OF EPOXY OR POLYESTERS PROTECTIVE COATINGS WELL APPLIED OVER A CONCRETE BODY IS RECOMMENDED. /A/LCPC/RRL/]]></description>
      <pubDate>Mon, 23 Nov 1970 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/98739</guid>
    </item>
    <item>
      <title>A GRAVIMETRIC METHOD FOR THE DETERMINATION OF BARIUM OXIDE IN PORTLAND CEMENT</title>
      <link>https://trid.trb.org/View/102058</link>
      <description><![CDATA[ANALYSES FOR BARIUM OXIDE WERE REQUIRED TO ADD TO THE DATA ON THE CEMENTS USED IN THE LONG-TIME STUDY OF CEMENT PERFORMANCE IN CONCRETE. SINCE NO METHOD WAS AVAILABLE FOR THE ANALYSIS OF CEMENT FOR BARIUM, ONE WAS DEVELOPED. THE METHOD AS DEVELOPED AND DESCRIBED HERE CONSISTS ESSENTIALLY OF REMOVING ALL THE CONSTITUENTS OF THE CEMENT EXCEPT BARIUM AND WEIGHING THE LATTER AS THE SULFATE. THE ACCURACY OF THE METHOD WAS VERIFIED BY ANALYSES OF SYNTHETIC MIXTURES OF KNOWN BARIUM CONTENT. THE CEMENTS USED IN THE LONG-TIME STUDY WERE ANALYZED AND FOUND TO CONTAIN NEGLIGIBLE AMOUNTS OF BARIUM CALCULATED AS THE OXIDE. THE DETAILED PROCEDURE IS PRESENTED IN AN APPENDIX. /PCA/]]></description>
      <pubDate>Mon, 01 Jun 1970 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/102058</guid>
    </item>
    <item>
      <title>THERMODYNAMICS OF ADSORPTION. BARIUM SULPHATE--WATER SYSTEM</title>
      <link>https://trid.trb.org/View/102086</link>
      <description><![CDATA[ADSORPTION ISOTHERMS FOR THE SYSTEM BARIUM SULFATE-WATER AT THREE TEMPERATURES HAVE BEEN OBTAINED. THERMODYNAMIC STUDY OF THESE DATA REVEALS THAT PART OF THE FREE ENERGY DECREASE IN THE ADSORPTION PROCESS INVOLVES CHANGES IN THE PARTIAL MOLAL FREE ENERGY OF THE ADSORBENT. FROM THE THREE ISOTHERMS DIFFERENTIAL AND INTEGRAL HEATS OF ADSORPTION WERE DERIVED AND COMPARED WITH NEW CALORIMETRIC DETERMINATIONS OF THE SAME THERMODYNAMIC FUNCTIONS. IN BOTH KINDS OF MEASUREMENTS EXACTLY THE SAME SYSTEM AND EXACTLY THE SAME MATERIALS WERE USED. /PCA/]]></description>
      <pubDate>Mon, 01 Jun 1970 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/102086</guid>
    </item>
    <item>
      <title>STABILIZATION OF GUMBOTIL SOIL FOR HIGHWAY USE</title>
      <link>https://trid.trb.org/View/122095</link>
      <description><![CDATA[GUMBOTIL SOIL IS A HIGHLY PLASTIC AMERICAN SOIL SOMEWHAT SIMILAR TO INDIAN BLACK COTTON SOIL. GUMBOTIL SOIL UNDERGOES GREAT VOLUME CHANGES AND LOSS OF STABILITY WITH THE ABSORPTION OF WATER, IT CONTAINS CLAY MINERALS OF THE MONTMORILLONITE GROUP. THE PROPERTIES OF THE UNTREATED SOIL WERE DETERMINED IN THE LABORATORY AND THE EFFECTS OF ADDING SMALL QUANTITIES OF CERTAIN STABILIZING AGENTS (LIME, CEMENT, CALCIUM CHLORIDE, BARIUM HYDROXIDE AND FINE AND COARSE AGGREGATE) WERE THEN STUDIED. THE RESULTS, WHICH ARE PRESENTED BY MEANS OF TABLES AND GRAPHS, SHOWED THAT LIME PRODUCED THE GREATEST IMPROVEMENT, CEMENT GAVE SOME IMPROVEMENT, AND OTHER MINERALS WERE OF LITTLE VALUE.]]></description>
      <pubDate>Mon, 16 Feb 1970 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/122095</guid>
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