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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>
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    <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>EFFET ANORMAUX DU SECHAGE ET DU MOUILLAGE SUR LA RESISTANCE A LA FLEXION ET A LA COMPRESSION DE SILICATES DE CALCIUM AUTOCLAVES</title>
      <link>https://trid.trb.org/View/1000798</link>
      <description><![CDATA[On a compare les resistances a la flexion et a la compression d'une serie de pates de silice OPC autoclavees, apres qu'elles aient ete sechees au four a la sortie de l'autoclave, et saturees.  La taille moyenne des particules se situait dans une gamme de 3 a 50 micrometres, et les rapports eau/solides entre 0,24 et 0,65. Les effets sur la resistance et les changements dimensionnels durant leur exposition prolongee a des environnements secs ou humides ont egalement ete examines.  Un certain nombre de changements de resistance anormaux ont ete observes apres le sechage et le mouillage associe avec des silices tres fines et des rapports eau/solides plus faibles.  Des explications possibles sont proposees.  (A).]]></description>
      <pubDate>Sat, 20 Nov 2010 00:10:10 GMT</pubDate>
      <guid>https://trid.trb.org/View/1000798</guid>
    </item>
    <item>
      <title>NEW WATER PERMEABILITY TEST SCHEME FOR CONCRETE</title>
      <link>https://trid.trb.org/View/652753</link>
      <description><![CDATA[This paper proposes an efficient test scheme for concrete permeability based on the principle of the test of water penetration depth.  By utilizing an autoclave, at least 18 concrete samples can be evaluated simultaneously under the same operating condition.  Experimental results show that the proposed test scheme yields permeability measurements with high reproducibility.  Testing conditions equivalent to those of a conventional flexible wall permeameter are simulated by fixing a water reservoir on the top and an air buffer at the bottom of the test sample.  In addition, the whole is put under uniformly applied pressure inside the autoclave.  Boundary leakage in the traditional concrete permeability test is eliminated by a new vacuum coating method that offers an excellent bonding between the concrete surface and the resin coating compound.  Thus, the proposed test scheme not only greatly increases the testing efficiency, but also improves the consistency of the results of the water permeability test on concrete.]]></description>
      <pubDate>Thu, 11 May 2000 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/652753</guid>
    </item>
    <item>
      <title>INDERS OF AUTOCLAVED PRODUCTS</title>
      <link>https://trid.trb.org/View/101819</link>
      <description><![CDATA[THIS PAPER, A SEQUEL TO ONE DESCRIBING THE X-RAY DIFFRACTION (XRD) IDENTFICATION OF BINDERS IN 10 COMMERCIAL AUTOCLAVED ASBESTOS-CEMENT PRODUCTS, CONTAINS RESULTS ON 14 ADDITIONAL SAMPLES. OUT OF THE TOTAL OF 24 SAMPLES, 22 BINDERS WERE FOUND TO BE ESSENTIALLY TOBERMORITE IN DIFFERENT DEGREES OF CRYSTALLINITY. THE BINDERS OF THE OTHER TWO COULD NOT BE POSITIVELY IDENTIFIED. CALCITE, BY MASKING TWO OF THE THREE PRINCIPAL TOBERMORITE LINES, ACCOUNTS FOR EQUIVOCAL IDENTIFICATION OF BINDERS IN A FEW SAMPLES. /ASTM/]]></description>
      <pubDate>Fri, 14 Oct 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/101819</guid>
    </item>
    <item>
      <title>A STUDY OF THE EXPANSION CHARACTERISTICS OF AN ORDINARY PORTLAND CEMENT WITH A HIGH AUTOCLAVE EXPANSION</title>
      <link>https://trid.trb.org/View/101664</link>
      <description><![CDATA[A STUDY WAS MADE OF THE EXPANSION CHARACTERISTICS OF HARDENED PASTES OF AN ORDINARY PORTLAND CEMENT WITH A HIGH AUTOCLAVE EXPANSION. THE BEHAVIOUR OF MORTAR MADE WITH THIS CEMENT WAS ALSO INVESTIGATED. SPECIMENS WERE EXAMINED FOR EXPANSION DURING MOIST CURING, AT 22 DEGREES, DURING IMMERSION IN BOILING WATER, DURING AUTOCLAVING AND WHILE THEY WERE BEING SUBJECTED TO COMBINATIONS OF THESE TREATMENTS. THE FOLLOWING ASPECTS ARE PRESENTED AND DISCUSSED: (1) THE INFLUENCE OF CURING OF PASTES AT A RELATIVE HUMIDITY OF 95 PER CENT, AT 22 DEGREES, ON THE EXPANSION IN THE AUTOCLAVE AND DURING IMMERSION IN BOILING WATER, (2) THE INFLUENCE OF AUTOCLAVE PRESSURE AND OF AUTOCLAVING TIME ON EXPANSION DURING AUTOCLAVING, (3) THE INFLUENCE OF IMMERSION IN BOILING WATER ON AUTOCLAVE EXPANSION, AND (4) DIMENSIONAL CHANGE DURING REPEATED CYCLES OF WETTING AND DRYING. FOR PURPOSES OF COMPARISON TESTS WERE ALSO CARRIED OUT ON A PORTLAND CEMENT WITH A LOW AUTOCLAVE EXPANSION. IT WAS FOUND THAT THE AUTOCLAVE EXPANSION AND THE EXPANSION DURING IMMERSION IN BOILING WATER OF THE CEMENT WITH A HIGH AUTOCLAVE EXPANSION ARE INFLUENCED BY THE PRE-CURING. THE EXPANSION DURING IMMERSION IN BOILING WATER INCREASED WITH INCREASED PRE-CURING TIMER. PRE-CURING WAS CARRIED OUT AT 22 DEGREES AND A RELATIVE HUMIDITY OF 95 PER CENT AND MAXIMUM EXPANSION OF THE CEMENT OCCURRED AT BETWEEN 8 AND 16 DAYS OF THE PRE- CURING PERIOD, AFTER WHICH THERE WAS A GRADUAL DECREASE IN EXPANSION. THE AUTOCLAVE EXPANSION DECREASED WITH INCREASED PRE-CURING TIME. /RRL/A/]]></description>
      <pubDate>Fri, 18 Mar 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/101664</guid>
    </item>
    <item>
      <title>WEATHERING OF SERPENTINE AGGREGATES</title>
      <link>https://trid.trb.org/View/108333</link>
      <description><![CDATA[THIS REPORT DEALS WITH THE RAPID WEATHERING OF SERPENTINE AGGREGATES IN AN AUTOCLAVE-TYPE DEVICE. SAMPLES OF SERPENTINE AGGREGATE FROM THREE SOURCES WERE SUBJECTED TO 10 WEATHERING CYCLES EACH AND THE RESULTS WERE COMPARED WITH THE RESISTANCE TO RAPID WEATHERING OF A STANDARD AGGREGATE. IT WAS CONCLUDED THAT SERPENTINE AGGREGATES ARE NOT HIGHLY SUSCEPTIBLE TO CHEMICAL WEATHERING. AT THIS TIME WE HAVE NO REASON TO EXPECT A POOR PERFORMANCE FROM SERPENTINE AGGREGATES THAT PASS ALL OF THE REQUIRED PHYSICAL TESTS. /BPR/]]></description>
      <pubDate>Tue, 01 Feb 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/108333</guid>
    </item>
    <item>
      <title>AUTOCLAVED AERATED CONCRETE FROM SLATE WASTE. PART 2: SOME PROPERTY/POROSITY RELATIONSHIPS</title>
      <link>https://trid.trb.org/View/167324</link>
      <description><![CDATA[Another paper provides some property/density relationships for a series of experimental slate-based autoclaved aerated concretes which cover a wide range of densities. The present paper goes on to discuss the corresponding property/porosity relationships for the same series. Porosity is characterised by the solid/pore volume ratio, vs/vp, which stems from a very simple physical model of the materials.  Regression analysis indicates that compressive strength, flexural modulus and strength, as well as fracture characteristics, can be regarded as linear functions of vs/vp within a reasonable degree of approximation.  (TRRL)]]></description>
      <pubDate>Sat, 15 Aug 1981 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/167324</guid>
    </item>
    <item>
      <title>CONCRETE AGGREGATE DURABILITY TESTS</title>
      <link>https://trid.trb.org/View/42770</link>
      <description><![CDATA[Several procedures are studied in an attempt to develop a less time consuming substitute for the sodium sulfate soundness test. Considered were procedures using elastic fractionation, heavy media separation, autoclave degradation, freezing and thawing of aggregates, and others. One procedure, detrition value test, correlates fairly well with soundness test losses for aggregates from one area of the state where the soundness test is a controlling factor in aggregate processing. This procedure consists of the dynamic abrasion of water and aggregate in a 5 gallon bucket on a paint shaker. A test method was developed and an alternate specification to the soundness test requirement written for control of aggregate quality. The specification is currently limited to aggregates from the Santa Clara River area near Ventura.]]></description>
      <pubDate>Fri, 16 Sep 1977 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/42770</guid>
    </item>
    <item>
      <title>A SIMPLE ACCELERATED STRENGTH FOR PORTLAND CEMENTS</title>
      <link>https://trid.trb.org/View/34750</link>
      <description><![CDATA[A simple accelerated test for measuring the strengths of portland cements is presented.  The test uses 2-in. (50-mm) mortar cubes, cured in a standard cement testing autoclave.  With this method it is possible to accurately predict the 28-day cube strengths in two days.  /Author/]]></description>
      <pubDate>Sat, 18 Oct 1975 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/34750</guid>
    </item>
    <item>
      <title>CEMENT - AUTOCLAVE EXPANSION TEST</title>
      <link>https://trid.trb.org/View/21991</link>
      <description><![CDATA[No Abstract.]]></description>
      <pubDate>Tue, 22 Apr 1975 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/21991</guid>
    </item>
    <item>
      <title>ACCELERATED STRENGTH DETERMINATION ON CEMENT USING MINIATURE TEST CYLINDERS</title>
      <link>https://trid.trb.org/View/102410</link>
      <description><![CDATA[RESULTS ARE REPORTED OF A STUDY COVERING SEVERAL RAPID TESTING METHODS DEVELOPED FOR ESTIMATING THE 28-DAY STRENGTH OF PORTLAND CEMENT. IT SHOWS THAT MINIATURE COMPACTED TEST CYLINDERS OF PURE CEMENT AND MORTAR MAY BE USED SUCCESSFULLY FOR COMPRESSIVE AND SPLIT-TENSILE STRENGTH DETERMINATIONS AFTER VARIOUS ACCELERATED CURING PROCEDURES. OF THE THREE PRINCIPAL METHODS INVESTIGATED, THE BOILING OF MODIFIED STANDARD MORTAR MINICYLINDERS APPEARS TO BE THE MOST PROMISING FOR A ROUTINE QUALITY CONTROL AT THE CEMENT PLANT. THE RATIO OF 7-H ACCELERATED STRENGTH TO 28-DAY CUBE STRENGTH, DEPENDING ON THE TYPE OF CEMENT, RANGED FROM ABOUT 40 TO 70 PERCENT. THE METHOD IS SIMPLE AND THE TEST RESULTS SHOWED A HIGH DEGREE OF REPRODUCIBILITY. THE 8-H, PURE CEMENT, BOILING METHOD PRODUCED RESULTS WHICH WERE VERY HIGH, EXCEEDING THE 28-DAY STRENGTH OF STANDARD MORTAR CUBES BY 2.4 TO 3.8 TIMES AND SHOWING RESULTS WHICH WERE ERRATIC FOR CEMENTS WITH DIFFERENT STRENGTH PRODUCING PROPERITES. THE 4.5-H AUTOCLAVE METHOD IS THE SHORTEST ONE, PRODUCING ACCELERATED STRENGTH APPROACHING THE STANDARD 28-DAY CUBE STRENGTH. THOUGH AN EFFICIENT METHOD, THE HYDROTHERMAL TREATMENT INTRODUCES ADDITIONAL CHEMICAL REACTIONS WHICH MAY CRITICALLY AFFECT SOME STRENGTH PROPERTIES OF CEMENT MORTAR. /ASTM/]]></description>
      <pubDate>Sun, 03 Oct 1971 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/102410</guid>
    </item>
    <item>
      <title>THE MECHANISM OF STABILIZATION OF HIGH-MAGNESIA PORTLAND CEMENTS BY REACTIVE SILICA UNDER AUTOCLAVE CONDITIONS.</title>
      <link>https://trid.trb.org/View/101775</link>
      <description><![CDATA[FACTORS WHICH PLAY IMPORTANT ROLES IN THE MECHANISM OF STABILIZATION OF HIGH-MAGNESIA PORTLAND CEMENTS BY ACTIVE SILICATE MATERIALS UNDER AUTOCLAVE CONDITIONS HAVE BEEN CONSIDERED. AMONG THESE, REDUCTION IN THE RATE OF HYDRATION OF UNCOMBINED MAGNESIUM OXIDE, FORMATION OF A MAGNESIUM SILICATE HYDRATE SIMILAR TO THE NATURAL MINERAL DEWEYLITE AND DEVELOPMENT OF SUBSTANTIAL STRENGTH IN AUTOCLAVED PRODUCTS ARE THOUGHT TO BE THE PRINCIPAL FACTORS WHICH CONTROL THE VOLUME-EXPANSION OF THESE CEMENTS. IT IS PROPOSED THAT STRENGTH DEVELOPMENT IN THESE MATERIALS IS CONSEQUENT UPON THE FORMATION OF LARGE AMOUNTS OF THE WELL CRYSTALLIZED 11 ANGSTROM TOBERMORITE PHASE. THE EXTRA STRENGTH GENERATED IN AUTOCLAVED MIXTURES OF CEMENT WHEN THEY INCORPORATE ACTIVE SILICA MAY BE SUFFICIENT TO CONTAIN THE EXPANSIVE FORCES GENERATED BY THE HYDRATION OF PERICLASE INTO BRUCITE. MUCH MAGNESIUM HYDROXIDE, VERY LITTLE CALCIUM HYDROXIDE AND SOME UNHYDRATED MAGNESIUM OXIDE ARE PRESENT IN THE FINAL PRODUCTS IN ADDITION TO TOBERMORITE. SOME INFORMATION ON THE MICROSTRUCTURE OF THE STABILIZED CEMENT AS SEEN WITH A SCANNING ELECTRON-MICROSCOPE IS GIVEN. /A/RRL/]]></description>
      <pubDate>Mon, 14 Sep 1970 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/101775</guid>
    </item>
    <item>
      <title>INVESTIGATIONS OF THE HYDRATION EXPANSION CHARACTERISTICS OF PORTLAND CEMENT</title>
      <link>https://trid.trb.org/View/101988</link>
      <description><![CDATA[SOME OF THE SIGNIFICANT RESULTS ARE SUMMARIZED OF EXTEN- SIVE PCA INVESTIGATIONS OF THE VOLUME CHANGE CHARACTERISTICS OF PORTLAND CEMENT PASTES. THE RESULTS OF THESE STUDIES INDICATE THE PRIMARY CAUSES OF UNSOUNDNESS IN PORTLAND CEMENT AND THE RELATIONSHIPS BETWEEN THE RESULTS OBTAINED BY VARIOUS ACCELERATED TESTS, PARTICULARLY THE AUTOCLAVE TEST, AND THE LENGTH CHANGE CHARACTERISTICS OF NEAT CEMENT LABORATORY CONDITIONS. /PCA/]]></description>
      <pubDate>Mon, 25 May 1970 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/101988</guid>
    </item>
    <item>
      <title>TEST RESULTS AND NEW DATA IN THE FIELD OF THERMAL TREATMENT OF CONCRETE /IN GERMAN/</title>
      <link>https://trid.trb.org/View/95797</link>
      <description><![CDATA[UNDER DISCUSSION IS THE HEATING OF CONCRETE INGREDIENTS AND WATER, HARDENING BY STEAM, INDIRECT HEATING BY RADIATION OR CONVECTION, AND HARDENING IN AUTOCLAVES. DIAGRAMS OF STANDARD INSTALLATIONS ARE PRESENTED. /RRL/LCPC/A/]]></description>
      <pubDate>Mon, 25 May 1970 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/95797</guid>
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