Concrete slab construction having a joining element made of concrete for joining concrete slabs together, and method for producing a concrete slab construction

A concrete slab construction (14) comprising:

• at least one concrete slab (2), and
• at least one joining element (1) made of concrete, for joining concrete slabs (2, 2′) and/or for fastening in a concrete slab (2),
• wherein the joining element (1) has a joining element (3) with an upper section (4) and a lower section (5), and a cross-section of the joining body (3) between the upper section (4) and the lower section (5) on one side (6), and also on another side (7), has at least one notch (8, 8′) or bulge (9, 9′), wherein the notch (8, 8′) or bulge (9, 9′) in particular has two wedge-shaped flanks (11, 11′) tapering to a tip (10), wherein the two flanks (11, 11′) form an obtuse or acute angle (q) and wherein the concrete slab (2) has at least one recess (15), a cross-section of the recess (15) between an top side (16) and a bottom side (17) of the concrete slab (2) on one side (18), and also on another side (19), has at least one bulge (20, 20′) or notch (21, 21′), wherein the bulge (20, 20′) or notch (21, 21′) has two wedge-shaped flanks (23, 23′), and wherein the joining element (1) is arranged in the recess (15), with the respective notch (8, 8′) or bulge (9, 9′) of the joining element (1) opposing the respective bulge (20, 20′) or notch (21, 21′) of the recess (15), and wherein there is a filler or filling material (25) in a gap (24) between the recess (15) and the joining element (1), wherein, the filler or filling material (25) is for example at least one fitting piece, such as a wedge, or mortar, sand or an adhesive.

A concrete slab construction (14) comprising:

• at least two concrete slabs (2, 2′), and
• at least one joining element (1) made of concrete for joining concrete slabs (2, 2′) and/or for fastening to a concrete slab (2),
• wherein the joining element (1) has a joining body (3) with an upper section (4) and a lower section (5), and a cross-section of the joining body (3) between the upper section (4) and the lower section (5) on one side (6) and on the opposite side (7) each has at least one notch (8, 8′) or bulge (9, 9′), wherein the notch (8, 8′) or bulge (9, 9′) has two wedge-shaped flanks (11, 11′) tapering to a tip (10), wherein the two flanks (11, 11′) form an obtuse or acute angle (φ) and wherein there is at least one bulge (20, 20′) or notch (21, 21′) along a lateral circumference of the concrete slabs (2, 2′) between a top side (16) and a bottom side (17) of the concrete slabs (2, 2′), wherein the bulge (20, 20′) or notch (21, 21′) has two wedge-shaped flanks (23, 23′), and wherein the joining element (1) is arranged between the two concrete slabs (2, 2′) in a recess (15), wherein the respective notch (8, 8′) or bulge (9, 9′) of the joining element (1) oppose the respective bulge (20, 20′) or notch (21, 21′) of the concrete slabs (2, 2′), and wherein there is a filler or filling material (25) in a gap (24) between the concrete slabs (2, 2′) and the joining element (1), wherein the filler or filling material (25) is for example, at least one fitting piece, such as a wedge, or mortar or sand or an adhesive.