CREEP AND CREEP RECOVERY OF PLAIN CONCRETE AS INFLUENCED BY MOISTURE CONDITIONS AND ASSOCIATED VARIABLES
EXPERIMENTS DESIGNED TO INVESTIGATE THE EFFECTS OF MOISTURE CONTENT, CONDITION OF THE CEMENT GEL, TIME OF LOADING, AND TIME OF UNLOADING UPON THE CREEP AND CREEP RECOVERY OF SEALED AND UNSEALED CONCRETE SPECIMENS ARE DESCRIBED. COMPARISONS ARE MADE BETWEEN THE CREEP AND CREEP RECOVERY RESPONSES OF SPECIMENS SEALED IMMEDIATELY AFTER CURING AND OF UNSEALED SPECIMENS. THE RESULTS FOR THE DRYING (UNSEALED) SPECIMENS WERE EASILY PREDICTABLE BY EXISTING THEORY BUT THOSE FOR THE SEALED SPECIMENS ARE NOT SO EASILY EXPLAINED. FOR EXAMPLE, UNDER CERTAIN CONDITIONS, THE CREEP OF UNSEALED SPECIMENS WAS LESS THAN THAT OF SEALED SPECIMENS, AND A PERIOD OF TIME DURING WHICH THE CREEP POTENTIAL OF SEALED SPECIMENS INCREASED WITH AGE AT TIME OF LOADING WAS OBSERVED. THESE RESULTS ARE DISCUSSED IN TERMS OF THE MAJOR VARIABLES AFFECTING THE CREEP OF CONCRETE THE DEGREE OF HYDRATION AT THE TIME OF LOADING, THE AMOUNT OF WATER PRESENT AND NOT CHEMICALLY COMBINED AT THE START OF LOADING AND WHILE THE SPECIMEN IS UNDER LOAD, AND THE AMOUNT OF MICROCRACKING DEVELOPED IN THE SYSTEM BEFORE AND DURING THE TIME UNDER LOAD. /RRL(A)/
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/00249831
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Supplemental Notes:
- Vol 22, No 70, PP 37-41, 3 FIG, 2 TAB, 9 REF
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Authors:
- Meyers, B L
- SLATE, F O
- Publication Date: 1970-3
Media Info
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Serial:
- MAGAZINE OF CONCRETE RESEARCH
- Publisher: Thomas Telford Limited
- ISSN: 0024-9831
Subject/Index Terms
- TRT Terms: Cement; Cement paste; Concrete; Creep; Fracture mechanics; Gels; Hydration; Loading and unloading; Mechanical relaxation; Microcracking; Moisture content; Pastes; Sealing (Technology); Time
- Uncontrolled Terms: Microcracks; Unloading
- Old TRIS Terms: Loading time; Sealing; Sealing experiments
- Subject Areas: Highways; Materials;
Filing Info
- Accession Number: 00213122
- Record Type: Publication
- Source Agency: Road Research Laboratory /UK
- Files: TRIS
- Created Date: May 10 1971 12:00AM