RESISTANCE OF PORTLAND CEMENT MORTAR TO CHEMICAL ATTACK - A PROGRESS REPORT
AN EXTENSIVE STUDY TO FURNISH INFORMATION ABOUT THE RESISTANCE OF CONCRETE TO CHEMICAL ATTACK BY VARIOUS INORGANIC AND ORGANIC COMPOUNDS HAS BEEN UNDERTAKEN USING 1.5- BY 1.5- BY 10-CM MORTAR BARS. CHANGES IN LENGTH, WEIGHT AND SONIC MODULUS ARE MEASURED PERIODICALLY. THE STUDY IS DESIGNED TO DETERMINE RELATIVE RESISTANCE TO CHEMICAL ATTACK OF VARIOUS SPECIAL TYPE MORTARS /MICROCONCRETES/ AT WATER-CEMENT RATIOS REPRESENTATIVE OF FULL-SCALE CONCRETES. IT ALSO FURNISHES INFORMATION WHICH MAY HELP EXPLAIN THE MECHANISMS OF ATTACK BY SPECIFIC AGENTS. ABOUT 1,200 SPECIMENS HAVE BEEN PLACED UNDER TEST, MANY HAVE BEEN EXPOSED FOR MORE THAN 2 YEARS. MOST ARE STILL IN SATISFACTORY CONDITION. THOSE FAILURES WHICH HAVE OCCURRED REPRESENT ONE OF TWO MAIN KINDS OF ATTACK, OR SOMETIMES BOTH. THE FIRST IS REMOVAL OF SOLUBLE COMPOUNDS FROM CEMENT BY ACID, SEQUESTERING AGENT, OR EXCHANGEABLE ION. THE SECOND IS THE DEPOSITION OF NEW COMPOUNDS WITHIN THE PASTE. RATES OF ATTACK ARE COMPARED AND THE NATURE OF THE ATTACK BY VARIOUS GROUPS OF SUBSTANCES IS DISCUSSED. /AUTHOR/
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Supplemental Notes:
- 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
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Authors:
- Kuenning, William H
- Publication Date: 1966
Media Info
- Media Type: Print
- Features: Figures; References; Tables;
- Pagination: pp 43-87
- Monograph Title: Symposium on Effects of Aggressive Fluids on Concrete
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Serial:
- Highway Research Record
- Issue Number: 113
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Corrosion; Inorganic compounds; Length; Measurement; Mortar; Organic compounds; Portland cement concrete; Sonic tests; Specimens; Water cement ratio; Weight
- Uncontrolled Terms: Change
- Old TRIS Terms: Resistance; Sonic testing
- Subject Areas: Highways; Materials;
Filing Info
- Accession Number: 00211963
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Oct 28 1994 12:00AM