| 摘要 |
<p>Levelling material for use as levelling layer for uneven substrates composed by a coarse levelling layer and a loading layer. The coarse levelling layer is at least 10 mm thick and consists of a pumpable coarse levelling compound with a binder content of 4-14 % of the dry weight, water-binder ratio of 1-5 and a content of sand plus filler of 85-95 % of the dry weight. The compressive strength is 2-17 MPa. The loading layer is of such a type that it rests with all of its bottom surface evenly distributed over the top surface of the coarse levelling layer and has an even thickness. In a preferred version, the loading layer is a fine levelling layer. This fine levelling layer has a thickness of 2-15 mm and consists of a pumpable fine levelling compound with a shrinkage of at most 0.15 %.</p> |
