To solve this problem,the thesis use acid (phosphoric acid ) to excite the activity of fly ash.Taking this way, fly ash can get gelation rapidly and wins higher intensity within a short time.

• 针对这一状况,本文利用酸(磷酸)对粉煤灰活性进行激发,该方式可使粉煤灰迅速获得胶凝性质并在短时间内获得较高的强度,弥补了传统激活方式的不足。