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    <title>Transport Research International Documentation (TRID)</title>
    <link>https://trid.trb.org/</link>
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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>
    <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>RELATIONS ENTRE LA PETROGRAPHIE ET LES PROPRIETES DES GRANULATS DES ROCHES ISLANDAISES</title>
      <link>https://trid.trb.org/View/1030957</link>
      <description><![CDATA[COMMUNICATION PRESENTEE DANS LE CADRE DU SYMPOSIUM INTERNATIONAL SUR LES GRANULATS, NICE, 21-22-23 MAI 1984 (FICHE GENERALE DIRR 117595), THEME IV : GRANULATS POUR CHAUSSEES (DIRR 117605).  RECEMMENT A ETE COMMENCE L'ETUDE DES PROPRIETES DE DIVERSES ROCHES.  LES TYPES DE ROCHES TESTEES SONT DES  BASALTES DE MINERALOGIE, POROSITE ET ALTERATION VARIES, DES RHYOLITES ET  DES HYALOCLASTITES.  UNE BONNE CORRELATION A ETE TROUVEE ENTRE CERTAINS ESSAIS SUR DES ROCHES HOMOGENES, MAIS INSIGNIFIANTE OU NULLE DANS D'AUTRE CAS.  LE RESULTAT LE PLUS IMPORTANT EST L'ETROITE RELATION TROUVEE ENTRE LA PETROGRAPHIE ET LES CARACTERISTIQUES DES GRANULATS RESULTANT DES TESTS ET DES OBSERVATIONS FAITES SUR LES ROUTES.  IL EST INTERESSANT DE NOTER QUE  LA POROSITE ET LE DEGRE D'ALTERATION EXERCENT UNE BIEN PLUS GRANDE INFLUENCE SUR LES PROPRIETES DES GRANULATS QUE LA COMPOSITION MINERALOGIQUE.  (A).]]></description>
      <pubDate>Sat, 20 Nov 2010 14:36:59 GMT</pubDate>
      <guid>https://trid.trb.org/View/1030957</guid>
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    <item>
      <title>POROSIMETRIE AU MERCURE DES GRANULATS DE BETON</title>
      <link>https://trid.trb.org/View/1026935</link>
      <description><![CDATA[L'AUTEUR PRESENTE DES MESURES EFFECTUEES AU POROSIMETRE A MERCURE SUR DES  SPECIMENS DE ROCHES ET DE SABLE UTILISES AU KOWAIT POUR LA FABRICATION DU BETON.  LES COURBES OBTENUES ONT PERMIS D'IDENTIFIER DES CARACTERISTIQUES DE DISTRIBUTION DIMENSIONNELLE DES ROCHES.  IL S'EST REVELE QUE LE SABLE  ET LE MORTIER AGGLOMERES CONTENAIENT PLUS DE 26 % DE PORES EN VOLUME, ET, SUR CE POURCENTAGE, PLUS DE 80 % PRESENTAIENT UN DIAMETRE SUPERIEUR A 100 NM.  LA RHYOLITE ET LE QUARTZ, MALGRE UNE POROSITE TOTALE NETTEMENT INFERIEURE, CONTIENNENT UNE QUANTITE IMPORTANTE DE PORES DONT LE DIAMETRE EST SUPERIEUR A 100 NM.  L'AUTEUR PENSE QUE L'INCLUSION DANS LE BETON DE CES AGGLOMERATS DE SABLE ET DE GRAVIER, PAR RAPPORT A LA PATE DE CIMENT DURCIE,  DETERMINENT DES CHAMPS DE CONTRAINTES INTENSIFIES.  LES PORES DONT LE DIAMETRE EST SUPERIEUR A 100 NM, QUI SE TROUVENT DANS CE TYPE DE ROCHES ET DANS LA RHYOLITE ET LE QUARTZ, FAVORISENT LA DIFFUSION D'IONS CHLORURE, CE QUI AFFAIBLIT LA DURABILITE DU BETON.  (A).]]></description>
      <pubDate>Sat, 20 Nov 2010 12:45:22 GMT</pubDate>
      <guid>https://trid.trb.org/View/1026935</guid>
    </item>
    <item>
      <title>Eude du comportement d'une roche volcanique en milieu alcalin</title>
      <link>https://trid.trb.org/View/959615</link>
      <description><![CDATA[Les resultats presentes ici s'inscrivent dans un programme d'etude concernant la petrographie appliquee a l'alcali-reaction. L'implication des granulats, tant du point de vue de leur nature que de leur proportion au sein d'une formulation de beton, necessite de mener une etude petrographique precise accompagnee d'essais sur formules de beton. L'alcali-reaction peut se definir comme la reponse des mineraux des granulats du beton a un desequilibre chimique avec le milieu ambiant faisant intervenir la solubilite de la silice lorsque l'on atteint de pH voisins de 13. Cette silice solubilisee combinee avec les alcalins du ciment, en milieu humide, peut donner naissance a des produits deleteres prejudiciables a la perennite des ouvrages. La recherche de criteres de reactivite passe par une etude fine au microscope optique polarisant avant la realisation de tout essai de reactivite en milieu alcalin, de type stabilite dimensionnelle (suivant la demarche stabilite des "Recommandations pour la prevention des desordres dus a l'alcali-reaction"). Certaines divergences peuvent alors apparaitre, elles ont ete notamment constatees dans le cas d'une famille de roches riches en silice, contenant parfois une proportion vitreuse importante (les rhyolites). (A) (Titres en anglais, en allemand et en espagnol: Study of the behaviour of a volcanic rock under alkaline conditions - Chemisches verhalten eines Ergussgesteins in alkalischer Umgebung - Estudio del comportamiento de una roca volcanica en un medio alcalino).]]></description>
      <pubDate>Thu, 07 Oct 2010 17:25:11 GMT</pubDate>
      <guid>https://trid.trb.org/View/959615</guid>
    </item>
    <item>
      <title>LUNAR SURFACE COMPOSITION AND PARTICLE SIZE: IMPLICATIONS FROM LABORATORY AND LUNAR SPECTRAL REFLECTANCE DATA</title>
      <link>https://trid.trb.org/View/121095</link>
      <description><![CDATA[LUNAR ALBEDO AND COLOR DATA ARE COMPATIBLE WITH PARTICULATE ROCK OF BASIC COMPOSITION SUCH AS BASALT, BUT NOT WITH CRYSTALLINE ACIDIC ROCK SUCH AS RHYOLITE, OR WITH ROCK GLASS SUCH AS OBSIDIAN, OR PUMICE. LABORATORY EXPERIMENTS SUGGEST THAT ALBEDO DIFFERENCES ON THE MOON COULD BE ACCOUNTED FOR BY VARIATIONS IN MEAN PARTICLE SIZE. ACCORDING TO THIS MODEL, THERE NEED NOT BE MAJOR COMPOSITIONAL DIFFERENCES BETWEEN HIGHLAND AND MARIA REGIONS. HOWEVER, COMPOSITIONAL IN HOMOGENEITIES WITHIN THE BASIS-ROCK FAMILY ARE IMPLIED BY AREAL COLOR DIFFERENCES WITHIN THE DARK MARIA. THE REDDENING OF LUNAR FEATURES WITH INCREASING PHASE ANGLE AND A BROAD MINIMUM IN THE LUNAR REFLECTANCE SPECTRUM AT 1.0 MU ARE DUPLICATED IN THE LABORATORY WITH BASALT POWDERS. /AUTHOR/]]></description>
      <pubDate>Sun, 15 Aug 2004 02:38:01 GMT</pubDate>
      <guid>https://trid.trb.org/View/121095</guid>
    </item>
    <item>
      <title>AN EVALUATION OF FOUR PAVEMENT TREATMENTS IN SYDNEY IN RELATION TO CRASH REDUCTION, SKID RESISTANCE AND COST</title>
      <link>https://trid.trb.org/View/211575</link>
      <description><![CDATA[Four different surface treatments were assessed at intersections in Sydney in terms of cost, wet sideways, frictional coefficient and crash reduction.  The surface treatments included river gravel asphaltic concrete (ac), rhyolite asphaltic concrete (ac), sand tar plant mix and calcined bauxite epoxy surfacing.  A group of sites were also chosen to receive no treatment to provide a control group.  Forty-six sites were chosen for the trial using crash information from a three year "before" analysis period.  The results over the 18 month 'after' period indicated that: (a) river gravel ac was unsuitable, as unacceptable polishing of the stone accompanied by a return to the pre-treatment crash rate occurred after only 12 months.  (b) three treatments were found to be effective in reducing crashes by 25 per cent with a 99 per cent confidence level.  (c) rhyolite ac and sand tar plant mix skid resistant treatments were found to be one third the cost of calcined bauxite.  Results have led to a new policy on surfacing in Sydney and are considered significant to any urban crash reduction program.  The number of the covering abstract for the conference is TRIS No. 393385. (Author/TRRL)]]></description>
      <pubDate>Wed, 31 Jul 1985 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/211575</guid>
    </item>
    <item>
      <title>GEOLOGY OF BOISE, IDAHO: IMPLICATIONS FOR GEOTHERMAL DEVELOPMENT AND ENGINEERING GEOLOGY</title>
      <link>https://trid.trb.org/View/196945</link>
      <description><![CDATA[Geologic mapping and data from geothermal-water wells have provided information to delineate late Cenozoic geologic units and structures important to understanding the geothermal system of Boise as it is currently being developed.  The main geothermal aquifer is a sequence of rhyolite layers and minor arkosic and tuffaceous sediments of the Miocene Idavada Group.  The aquifer is confined by a unit of impermeable basaltic tuffs.  The aquifer has sufficient fracture permeability to yield 150-170 deg F hot water at a rate of 600 to 1200 gpm from wells drilled in the metropolitan area north of the Boise River.  In this area the rhyolite lies at a depth of 900 to 2000 ft.  A conceptual model for recharge of the geothermal aquifer assumes percolation to a depth of 7000+ ft beneath the granitic highlands northeast of the city.  Deep percolation is driven by the topographic head.  Heated water convects upward through the NW-trending range-front faults.  The basaltic tuff unit is responsible for several landslides and for the moderately expansive clays in the eastern Boise foothills.  Planning and construction near areas of outcrop of the basaltic tuff unit should be accompanied by thorough geotechnical investigation.]]></description>
      <pubDate>Fri, 30 Mar 1984 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/196945</guid>
    </item>
    <item>
      <title>SPRINKLE TREATMENT PLACEMENT--US 59--LUFKIN, TEXAS</title>
      <link>https://trid.trb.org/View/194872</link>
      <description><![CDATA[A series of sprinkle treatment sections were placed on US 59 in Lufkin, Texas.  The materials placed were: 1) precoated rhyolite, 2) non-precoated rhyolite, 3) precoated sandstone, and 4) precoated lightweight.  The study monitored the performance of both hot and cold ambient air temperature, placement of the various aggregates by the sprinkle treatment procedure, and assessed the use of non-precoated sprinkle aggregate.  The surfaces were evaluated over a 3-year period by skid tests and visual evaluations.  (Author)]]></description>
      <pubDate>Tue, 30 Aug 1983 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/194872</guid>
    </item>
    <item>
      <title>IN SITU STRENGTH AND TOTAL STRESS ANALYSIS FOR AN EMBANKMENT ON A SOFT FOUNDATION</title>
      <link>https://trid.trb.org/View/73722</link>
      <description><![CDATA[This paper presents a case history of general failure of a road embankment on soft ground in the central part of Thailand, which was used to pre-compress the saturated subsoil and where several failures occurred shortly after the final lift of the embankment.  The effects of traffic loading and fluctuations of water level are considered in the analysis.  The theoretical factors of safety for the failures are uniformly high unless the traffic loading is taken into account, when the values reduce to about unity.]]></description>
      <pubDate>Thu, 12 Oct 1978 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/73722</guid>
    </item>
    <item>
      <title>SATURATED SAND AS AN INELASTIC TWO-PHASE MEDIUM</title>
      <link>https://trid.trb.org/View/44415</link>
      <description><![CDATA[The inelastic densification produced by shear straining saturated sands is opposed by the elasticity of the pore water and leads to a pore pressure increase, which causes a decrease in the intergranular frictional forces and consequent liquefaction of the sand mass.  This inelastic densification is accompanied by an inelastic strain of the fluid phase, and the magnitude of the developed pore water pressure is the product of the inelastic densification and the densification compliance, the latter being approximately equal to the drained compressibility of the sand.  The tangent elastic moduli are expressed in terms of the drained and undrained compressibilities of the two-phase medium and the compressibilities of water and the solid matter forming the grains.  It is demonstrated that the volume change of the grains due to intergranular stresses has a negligible effect on the material parameters, even though it roughly equals the volume change of the grains due to the pore water pressure, which has an appreciable effect.  Typical values are calculated for the material parameters.]]></description>
      <pubDate>Wed, 17 Nov 1976 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/44415</guid>
    </item>
    <item>
      <title>GEOLOGY AND FORESTRY CLASSIFICATION FROM ERTS-1 DIGITAL DATA</title>
      <link>https://trid.trb.org/View/35733</link>
      <description><![CDATA[Computer classifications into seven and ten classes of two areas in central Oregon of interest to geology and forestry demonstrate the extraction of information from ERTS-1 data. The area around Newberry Caldera was classified into basalt, rhyolite obsidian, pumice flats, Newberry pumice, ponderosa pine, lodgepole pine and water classes. The area around Mt. Washington was classified into two basalts, three forest, two clearcut, burn, snow, and water classes. Both also include an unclassified category. Significant details that cannot be extracted from photographic reconstitutions of the data emerge from these classifications, such as moraine locations and paleo-wind directions. Spectral signatures for the various rocks are comparable to those published elsewhere.]]></description>
      <pubDate>Fri, 14 May 1976 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/35733</guid>
    </item>
    <item>
      <title>BALLAST QUARRYING IN NEW SOUTH WALES</title>
      <link>https://trid.trb.org/View/25754</link>
      <description><![CDATA[This article describes the operation of the Shepherd's Hill quarry 350 miles west of Sydney. The Shepherd's Hill outcrop consists of a rhyolite-porphyry with phenocrusts of feldspar, quartz, chlorite, biotite and sphene. Details are given of face operations, including drilling and blasting, loading and transportation, the primary and secondary crushing plant, the power supply, and maintenance of plant.]]></description>
      <pubDate>Tue, 22 Apr 1975 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/25754</guid>
    </item>
    <item>
      <title>THE CORPS OF ENGINEERS NUCLEAR CONSTRUCTION RESEARCH ACTIVITIES</title>
      <link>https://trid.trb.org/View/109977</link>
      <description><![CDATA[PROGRAM ACTIVITIES OF THE U.S. ARMY CORPS OF ENGINEERS NUCLEAR CRATERING GROUP INCLUDE (1) CRATERING CALIBRATION OF VARIOUS GEOLOGIC MEDIA AND DEVELOPMENT OF TECHNIQUES TO PROVIDE A DESIRED CRATER GEOMETRY WITH CHEMICAL EXPLOSIVE DETONATIONS; (2) JOINT PLANNING OF AND TECHNICAL PARTICIPATION IN ATOMIC ENERGY COMMISSION NUCLEAR EXCAVATION EXPERIMENTS; (3) DEVELOPMENT OF DATA ON THE ENGINEERING PROPERTIES OF NUCLEAR CRATERS; (4) DEVELOPMENT OF CHEMICAL AND NUCLEAR EXPLOSIVE CONSTRUCTION TECHNOLOGY FOR CIVIL WORKS; (5) ENGINEERING STUDIES OF NUCLEAR CONSTRUCTION FEASIBILITY; AND (6) JOINT CE/AEC CIVIL WORKS NUCLEAR CONSTRUCTION EXPERIMENTS. NCG HAS EXECUTED SEVEN MAJOR CHEMICAL EXPLOSIVES CRATERING EXPERIMENTS TO PROVIDE CRATERING CALIBRATION OF DRY ALLUVIUM, DRY BASALT, RHYOLITE, AND WATER-SATURATED CLAY SHALE. RECENTLY COMPLETED WAS A RESERVOIR CONNECTION EXPERIMENT AT FORT PECK, MONTANA, AND THE CRATERING AND SAFETY CALIBRATION DETONATIONS FOR A SMALL BOAT HARBOR EXCAVATION EXPERIMENT IN KAWAIHAE BAY ON THE ISLAND OF HAWAII. NUCLEAR CRATER ENGINEERING PROPERTIES FIELD INVESTIGATIONS HAVE RECENTLY BEEN COMPLETED IN WHICH A TRENCH WAS EXCAVATED THROUGH THE LIP OF THE CRATER AND THE MATERIAL SCREENED AND WEIGHED. INVESTIGATIONS ARE PLANNED FOR SOME OF THE MORE RECENTLY EXECUTED NUCLEAR CRATERING EXPERIMENTS. ESTIMATES OF TRUE CRATER VOLUME AND RADIATION LOGS IN DRILL HOLES ON TWO OTHER PROJECTS HAVE BEEN USED AS A BASIS FOR DEVELOPMENT OF A TECHNIQUE FOR PREDICTING THE EXPECTED EXPOSURE DOSE RATES IN NUCLEAR CRATERS. FOUR CONCEPTUAL NUCLEAR CONSTRUCTION APPLICATIONS HAVE BEEN IDENTIFIED AS HAVING SIGNIFICANT POTENTIAL FOR ACCOMPLISHMENT: (1) NUCLEAR QUARRYING TO PRODUCE ROCKFILL OR AGGREGATE; (2) NUCLEAR HARBOR CONSTRUCTION; (3) NUCLEAR EJECTA DAM CONSTRUCTION; AND (4) NUCLEAR CANAL OR ROADBED CUT EXCAVATION. THE NUCLEAR QUARRY HAS BEEN IDENTIFIED AS THE MOST DIRECT APPLICATION OF PRESENT TECHNOLOGY. THE LARGE HARBOR AT A REMOTE SITE IS ONE OF THE MOST ATTRACTIVE PROSPECTS FOR NUCLEAR EXCAVATION. /AUTHOR/]]></description>
      <pubDate>Fri, 11 Jun 1971 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/109977</guid>
    </item>
    <item>
      <title>REACTIVITY OF AGGREGATES WITH CEMENT ALKALIS</title>
      <link>https://trid.trb.org/View/98910</link>
      <description><![CDATA[THE VARIOUS TYPES OF ALKALI-AGGREGATE REACTIVITY ARE DESCRIBED AND METHODS FOR IDENTIFYING REACTIVE AGGREGATES ARE DISCUSSED. THE ALKALI REACTIVITY OF NEW ZEALAND AGGREGATES IS CONSIDERED AND EXAMPLES OF REACTIVE COMBINATIONS ARE GIVEN. ALTHOUGH NO INSTANCES OF FAILURE OF CONCRETE OWING TO ALKALI-AGGREGATE REACTION HAVE BEEN OBSERVED IN NEW ZEALAND, CERTAIN AGGREGATES, PARTICULARLY RHYOLITES, ANDESITES AND DACITE ARE POTENTIALLY REACTIVE. WHERE THESE MATERIALS MUST BE USED, ADEQUATE PRECAUTIONS NEED TO BE TAKEN TO PREVENT A POSSIBLE EXPANSION REACTION FROM OCCURRING, E.G. USE OF LOW-ALKALI CEMENT OR THE ADDITION OF A SUITABLE POZZOLAN. THE NEED FOR CAREFUL INSPECTION OF EXISTING STRUCTURES CONTAINING POTENTIALLY REACTIVE AGGREGATES IS ALSO STRESSED. /TRRL/]]></description>
      <pubDate>Wed, 26 May 1971 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/98910</guid>
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