Method for detecting water resistance of gypsum by using acidometer

The invention particularly discloses a method for detecting the water resistance of gypsum by using an acidimeter. The method comprises the following steps: S1, aging the gypsum; s2, preparing a gypsum test block; s3, measuring the strength and the PH value of the absolute dry gypsum test block; s4, calculating the saturation strength and the gypsum softening coefficient of the to-be-tested gypsum test block; according to the technical scheme, a simple acidity meter in a laboratory is used as an on-line monitoring tool, the water resistance of the gypsum is detected through the change of the pH value of the gypsum immersion solution, the operation method is simple and convenient, the detection speed is high, and the method is suitable for on-line monitoring of building mortar production enterprises, building construction units and quality inspection organizations. 本发明具体公开了一种利用酸度计检测石膏耐水性的方法，包括以下步骤：S1、石膏陈化；S2、制备石膏试块；S3、测定绝干石膏试块强度与PH值；S4、计算待测试石膏试块的饱和强度及石膏软化系数；本发明技术方案以实验室简单的酸度计为在线监控工具，通过石膏浸水溶液pH的变化，检测石膏的耐水性，操作方法简