low-alkali cement

low-alkali cement

A portland cement containing a relatively small amount of sodium or potassium or both.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
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Some authors [41] have shown that the pH value of well-hydrated Portland cement was between 12.5 and 13.5, and the pH value of sulfoaluminate low-alkali cement was between 10.5 and 11.5.
Buzzi Unicem will immediately begin shipping TypeI/II low-alkali cement by barge from the company's newly expanded plant in Festus, Mo.
The equivalent alkali content of the cement is calculated to be 0.62% according to the commonly recognized formula [Na.sub.2][O.sub.eq] = [Na.sub.2] O + 0.658[K.sub.2]O, a little higher than 0.60% which is the maximum value of low-alkali cement. Table 3 presents the alkali content of water used for the structure.
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