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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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      <title>EFFECTS OF MIXING SEQUENCE ON MORTAR CONSISTENCIES WHEN USING WATER-REDUCING AGENTS</title>
      <link>https://trid.trb.org/View/101447</link>
      <description><![CDATA[THE SEQUENCE OF ADDING WATER-REDUCING AND SET-RETARDING AGENTS TO CEMENT MORTARS SHOWED SIGNIFICANT EFFECTS ON INITIAL FLOWS, FLOW LOSS RATES, AND POSSIBLE WATER REDUCTION AMOUNTS IN TWO SERIES OF TESTS. ADDITION OF POWDERED CALCIUM LIGNOSULPHONATE TO CONTROL MORTARS SEVERAL HOURS AFTER MIXING WERE FOUND TO INCREASE PERCENT FLOWS WITHOUT GREATLY AFFECTING SETTING TIMES. SUCH ADDITIONS COULD BE USED TO RESTORE THE SLUMP OF CONCRETE WHICH HAS STARTED TO STIFFEN IN TRUCK MIXERS. THIS TECHNIQUE WOULD BE PREFERABLE TO ADDING MORE WATER TO A MIX.]]></description>
      <pubDate>Fri, 18 Nov 1994 00:00:00 GMT</pubDate>
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      <title>MORPHOLOGY AND MICROSTRUCTURE OF HYDRATING PORTLAND CEMENT AND ITS CONSTITUENTS. I. CHANGES IN HYDRATION OF TRICALCIUM ALUMINATE ALONE AND IN THE PRESENCE OF TRIETHANOLAMINE OR CALCIUM LIGNOSULPHONATE</title>
      <link>https://trid.trb.org/View/99128</link>
      <description><![CDATA[MORPHOLOGICAL CHANGES WHICH OCCUR DURING THE HYDRATION OF TRICALCIUM ALUMINATE PASTE WERE OBSERVED BY ELECTRON MICROSCOPY FROM THE AGE OF 5 MINUTES TO 3 MONTHS. X-RAY ANALYSES WERE USED TO IDENTIFY PHASES. THE EFFECTS OF THE ADMIXTURES, TRIETHANOLAMINE AND CALCIUM-LIGNOSULPHONATE WERE INVESTIGATED WITH AND WITHOUT GYPSUM. THE DOSAGE OF ADMIXTURE WAS 0.5%; THE WATER TO TRICALCIUM ALUMINATE RATIO WAS 1.0. THE RESULTS SHOWED CLEARLY THE MORPHOLOGICAL CHANGES THAT TOOK PLACE AS HYDRATION PROCEEDED, AND SHOWED THE SPECIFIC INFLUENCES OF EACH OF THE TWO ADMIXTURES. /AUTHOR/]]></description>
      <pubDate>Sun, 25 Jul 1971 00:00:00 GMT</pubDate>
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      <title>MORPHOLOGY AND MICROSTRUCTURE OF HYDRATING PORTLAND CEMENT AND ITS CONSTITUENTS. II. CHANGES IN HYDRATION OF CALCIUM SILICATES ALONE AND IN THE PRESENCE OF TRIETHANOLAMINE AND CALCIUM LIGNOSULPHONATE, BOTH WITH AND WITHOUT GYPSUM</title>
      <link>https://trid.trb.org/View/99130</link>
      <description><![CDATA[SYSTEMATIC SEQUENTIAL OBSERVATIONS WITH THE ELECTRON MICROSCOPE WERE MADE OF THE MORPHOLOGICAL CHANGES WHICH OCCURRED DURING HYDRATION OF TRICALCIUM SILICATE AND DICALCIUM SILICATE PASTES, IN OR OUT OF THE PRESENCE OF GYPSUM. THE SPECIFIC EFFECTS OF EACH OF TWO ADMIXTURES WERE STUDIED: TRIETHANOLAMINE AND CALCIUM LIGNOSULPHONATE. WATER TO TRICALCIUM SILICATE OR DICALCIUM SILICATE RATIO WAS 0.5 AND ADMIXTURE DOSAGE WAS 0.5%. THE ADMIXTURES HAD SOME EFFECT ON CHANGES IN MICROSTRUCTURE, BUT THEY HAD A PRONOUNCED INFLUENCE ON THE RATE OF THE HYDRATION PROCESSES. /AUTHOR/]]></description>
      <pubDate>Sun, 25 Jul 1971 00:00:00 GMT</pubDate>
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