Anchor with a multi-chamber cement container

An anchor for use in a lightweight construction panel (100) having an upper cover plate (101) and a lower cover plate (111) with a support core (121) disposed therebetween, said anchor comprising a cylinder body (10) having a bottom (140), a displacement body (50) and a cement container (40) disposed in the cylinder body (10) and provided with predetermined rupture areas, the cylinder body (10) having at least two engagement elements (22) which, after insertion of the anchor into a bore formed in the lightweight construction panel (100) and upon insertion of the displacement body (50) into the cylinder body (10), are spread apart below the upper cover plate (101), the cylinder body (10) having an inner chamber accommodating the cement container (40) and being provided with several openings (16, 39, 142, 143) and the cement container (40) having at least two chambers (46, 47), an upper opening (1), a lower opening (2) and a rupturable intermediate separating wall (44) consisting of the same material as the cement container (40), the upper and the lower openings (1, 2) being closed each by a rupturable aluminum foil (42, 43).