PORTLAND CEMENT COMPOSITIONS AND METHOD
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Abstract
A FREE-FLOWING EXPANDING CEMENT PASTE IS MADE BY MIXING FINELY GROUND CEMENT WITH AT LEAST 0.0025 PART OF ALKALI OR ALKALINE EARTH LIGNOSULFONATE AND WITH ABOUT 0.20-0.28 PART OF WATER CONTAINING AT LEAST 0.0025 PART OF ALKALI CARBONATE. MIXTURES OF AGGREGATE WITH SUCH LOW-POROSITY PASTES YIELD, ON CURING, MORTARS AND CONCRETES OF IMPROVED STRENGTH AND DIMENSIONAL STABILITY.
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