| 摘要 |
<p>A method of accommodating the pressure arising from the delivery of a large current density off a sacrificial anode metal [1] located in a cavity [2] in concrete [3] is disclosed. It comprises substantially surrounding the anode with a pliable viscous backfill [4] such as a lime putty or clay and providing a space into which the backfill may move. The space may be provided by venting the backfill to space outside the cavity through an opening [5] or by including a void space within the backfill [6] or a void space within the cavity [7]. The void space in the backfill or cavity may be generated using a weak foamed polymer.</p> |
