Workability and water retentivity of cement mortar

Abstract

The effect of additives on the workability and water retentivity of cement-sand mortar has been studied by mixing 0.5 to 3.0% tartaric acid, dextrine, ammonium chloride and sodium blearbonate by weight of cement. Water retention values were determined by subjecting the mixes to a vacuum of SO mm of mercury. The percent now and water retention values were found to vary with the quantity of additive. Tartaric acid produced a very high water retention value and dextrine, a highly workable cement mortar. © 1992 Taylor & Francis Ltd.