| 摘要 |
<p>An elongate concrete-barrier element (22) for use in combination with an elongate supporting element (40) which is disposed with the aid of spacing means (19, 21) above a foundation (41) and has a sliding plane surface (3) to allow a concrete-levelling device carried by the supporting element (40) to be moved slidably along the sliding plane surface (3). According to the invention the concrete-barrier element has an upper anchoring portion (24) to be secured to the supporting element (40), a lower slit portion (25) and a waist portion (26) located therebetween. The slit portion (25) has a plurality of vertical slits (32) forming bendable flaps (33), some of which being intended to be bent aside to form openings for the trussing irons, while the other flaps are intended to extend down to the foundation (41) in order to maintain their closing off function.</p> |
