THE RELATIONSHIP BETWEEN CUBE STRENGTH AND NON-EVAPORABLE WATER IN CEMENT PASTES SUBJECTED TO VARIOUS CURING REGIMES
THE AUTHOR IN HIS PREVIOUS WORK HAD COMPARED THE RATE AND EXTENT OF HYDRATION IN CEMENT PASTES CONTAINING VARIOUS PROPORTIONS OF PORTLAND CEMENT AND BLAST FURNACE SLAG WHICH WERE SUBJECTED TO VARIOUS CURING CONDITIONS. FOR PRACTICAL REASONS THE COMPARISONS WERE MADE ON THE BASIS OF THE NON- EVAPORABLE WATER CONTENT (W). IT WAS, HOWEVER, NECESSARY TO SUPPLEMENT THESE DATA WITH PARALLEL DETERMINATIONS OF THE CUBE STRENGTH IN CERTAIN CASES TO OBTAIN SOME MEASURE OF RELIABILITY OF RELATIONS BETWEEN W TO THE NTH DEGREE AND THIS TRADITIONAL AND UNIVERSALLY ACCEPTED INDEX OF QUALITY. THE WORK REPORTED IN THIS PAPER FALLS INTO TWO MAIN SECTIONS: (1) COMPARISON OF THE CUBE STRENGTHS OF A RANGE OF MIXES CONTAINING PORTLAND CEMENT AND MIXTURES OF PORTLAND CEMENT AND BLASTFURNACE SLAG SUBJECT TO CONTROLLED CURING IN VARIOUS ENVIRONMENTS, AND (2) AN APPRECIATION OF THE RELIABILITY OF EMPIRICAL RELATIONSHIP BETWEEN CUBE CRUSHING STRENGTH AND FUNCTIONS OF THE NON-EVAPORABLE WATER W TO THE NTH DEGREE. IT IS CONCLUDED FROM THE EXPERIMENTAL RESULTS THAT: (1) THE VARIATION OF NON-EVAPORABLE WATER AND CUBE CRUSHING STRENGTH FOR 50/50 CEMENT FOLLOWS THE SAME PATTERN AS THAT FOR 100/0 CEMENT UNDER CURING REGIMES RANGING FROM IMMERSION IN WATER TO SEVERE PREMATURE DESSICATION. THE RATIO OF THE STRENGTH OF 50/50 CEMENT TO THAT OF 100/0 CEMENT APPEARS TO BE LESS THAN 1 FOR ALL CONDITIONS OF CURING, BUT THIS RATIO IMPROVES WITH TIME IN CASES WHERE SPECIMENS ARE EXPOSED TO DRYING ATMOSPHERES. FOR PRACTICAL CONCRETE HAVING A LEAST DIMENSION OF 6 IN. OR MORE, THE RATIO PROBABLY LIES BETWEEN 0.80 AND 0.93, AND (2) THE EXPERIMENTAL EVIDENCE SUPPORTS THE GENERAL CONCLUSION THAT CUBE CRUSHING STRENGTH IS A FUNCTION OF THE NON-EVAPORABLE WATER CONTENT. /CRRI/
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Supplemental Notes:
- Vol 7, No 11, PP 265-283
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Authors:
- Mills, R H
- Publication Date: 1961-10
Media Info
- Serial:
Subject/Index Terms
- TRT Terms: Blast furnaces; Cement; Concrete curing; Crushing; Cubes; Hydration; Moisture content; Pastes; Portland cement; Slag cement; Strength of materials
- Subject Areas: Highways; Materials;
Filing Info
- Accession Number: 00212616
- Record Type: Publication
- Source Agency: Central Road Research Institute
- Files: TRIS
- Created Date: Jul 1 1994 12:00AM