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.

研究了非水滴定和酸滴定相结合测定天碳酸钠、碳酸氢钠和总度的分析方法;

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，可配制出耐久良好、具有微的低度改水泥。