alkality

The analytical method of sodium carbonate,sodium hydrogen carbonate and total alkality in natural alkali was studied by combining nonwater titration with acid-base titration.

研究了非水滴定和碱滴定相结合测定天然碱中、氢和总碱度的分析方法;

R esults show that the modified cement with good durability, small expansion and low alkality can be made by use of gypsum and zeolite modifying alumina cement.

结果表明：以石和沸石对高铝水泥改性，可配制出耐久性、有微膨胀性的低碱度改性水泥。