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Title: RHEOLOGY OF FRESH PORTLAND CEMENT PASTES-INFLUENCE OF CALCIUM SULFATES
Accession Number: 00212312
Record Type: Component
Abstract: A STUDY OF THE INFLUENCE OF THE VARIOUS FORMS OF CALCIUM SULFATE ON THE FLOW PROPERTIES OF FRESH PORTLAND CEMENT PASTES WAS MADE WITH A COAXIAL CYLINDER VISCOMETER. BOTH CALCIUM SULFATE HEMI-HYDRATE CASO4.1/2 H20 AND SOLUBLE ANHYDRITE CASO4 PRODUCED HIGH APPARENT VISCOSITIES AND YIELD VALUES IN PASTES OF CLINKER OR QUARTZ. THESE PROPERTIES ARE ATTRIBUTED TO THE NETWORK OF GYPSUM CRYSTALS FORMED FROM THE SUPERSATURATED SOLUTIONS PRODUCED BY THESE SULFATES. WITHOUT THE ADDITION OF CALCIUM SULFATE, THE TRICALCIUM ALUMINATES HYDRATE QUICKLY AND THE PASTES STIFFEN ABNORMALLY. SHEAR THICKENING PROPERTIES ARE PRODUCED IN QUARTZ POWDER ANHYDRITE. HOWEVER, A SIMILAR TREND IS NOT DEFINITELY SHOWN BY PASTES MADE FROM CLINKER AND THESE CALCIUM SULFATES . A CEMENT WAS HEATED AT 120 C TO DEHYDRATE THE GYPSUM AND A PASTE OF THIS CEMENT EXHIBITED A SHEAR THICKENING FLOW BEHAVIOR. /AUTHOR/
Supplemental Notes: No 3, pp 9-29, 13 TAB, 22 REF Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
Monograph Title: Monograph Accession #: 01409976
Authors: Greenberg, S AMeyer, L MPagination: pp 9-29
Publication Date: 1963
Serial: Media Type: Print
Features: Figures; References; Tables
TRT Terms: Subject Areas: Highways; Materials
Files: TRIS, TRB
Created Date: Jan 23 1994 12:00AM
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