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配方類型：	MISCELLANEOUS
配方說明：	Mortar Improvement
配方組成：
配制方法：	Calcium gluconate added as 0.2% by weight of a mortar composition extends normal set time by 3 hr., 20 minutes. The mortar used consists of cement, 300 gm.; sand, 900 gm.; water 160 ml. Calcium gluconate increases workability of a Portland cement concrete formulation without further addition of water. At the suggested use level, calcium gluconate gives a slump of 7.5 inches, compared with a slump of 2 inches for the control.

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