| 摘要 |
<p>On providing a durable moisture barrier on concrete surfaces and the like the superficial layer is first dried deeply under forced blowing on of a drying medium having a low relative humidity, preferably hot compressed air, whereupon a deep impregnation agent, having the ability to react with moisture and components of the concrete to form a sealing gel, is added and is permitted to be absorbed by the superficial layer and to react therein. The just mentioned steps, if desired preceded by a water soaking, may be repeated close to each other, unto there is no noticeable tendency to absorption of the impregnation agent.</p> |
