| 摘要 |
<p>The expansion anchor (11) has an anchor bolt (12) and an expansion sleeve (21). The anchor bolt has a load engagement unit (16) at an end area (14) and an expansion part (17) at another end area (15), which has a conical section (18) extending in the direction of the free end of the end area (15) for widening the expansion sleeve (21). The inner contour (22) of the expansion sleeve has an area (23) with a surface roughness, which increases in the direction of the end area (14) of the anchor bolt.</p> |
