air mortar

An air mortar (or debris mortarhttp://books.google.

1. Air mortar is often used for repairing historic buildings due to its compatibility with the original construction materials.
   气硬性砂浆常用于修复历史建筑，因为它与原建筑材料相兼容。
2. The mason prepared several batches of air mortar to ensure enough material for the day's work.
   泥瓦匠准备了几批气硬性砂浆，以确保当天的工作材料充足。
3. Unlike hydraulic mortars, air mortars cannot set under water.
   与水硬性砂浆不同，气硬性砂浆不能在水下凝固。