Expansion joint structure for concrete slabs
An expansion joint structure to be placed between adjacent concrete slabs in a concrete slab system comprises a first profile element to be attached to an edge of a first concrete slab, and a second profile element to be attached to an edge of a second concrete slab, the profile elements being joined together by removable connecting strips such that there is a gap between the profile elements. The profile elements and connecting strips constitute a single continuous entity of extruded aluminum profile. The connecting strips are attached by outer edges to the profile elements through very thin neck portions that keep the elements together during the pouring of the slab. The expansion joint structure is positioned on the concreting base at the correct height prior to the pouring of the concrete slabs.
1. An expansion joint structure for concrete slabs, comprising:
a first profile element to be attached to an edge of a first concrete slab, and
a second profile element to be attached to an edge of a second, adjacent, concrete slab, said profile elements being joined together by at least one removable connecting strip such that there is a gap between the profile elements,
wherein the first profile element and second profile element and the at least one connecting strip form a single continuous aluminum profile, and
wherein the at least one connecting strip is attached by a first edge to the first profile element and by a second edge to the second profile element through respective necks having a reduced thickness with respect to a central portion of the at least one connecting strip such that the at least one connecting strip can be torn off.
2. The expansion joint structure according to claim 1 , wherein there are two connecting strips and a first connecting strip is placed at an upper edge of the gap and a second connecting strip is placed at a middle or lower portion of the gap.
3. The expansion joint structure according to claim 1 , wherein, a width of the gap between the first and second profile elements is about 10 millimeters.
4. The expansion joint structure according to claim 1 wherein at least one of the first profile element and the second profile element comprise means for coupling expansion joint structures together.
5. The expansion joint structure according to claim 1 , wherein the first profile element is designed to serve as a concreting form or construction joint form.
6. The expansion joint structure according to claim 1 , wherein a cross section of the first profile element is shaped such that the first profile element provides an expansion joint form which can transfer shear stresses.
7. The expansion joint structure according to claim 1 wherein at least one of the first profile element and the second profile element comprise bondage elements in order to enhance the bonding of the profile elements to the concrete slabs.
8. The expansion joint structure according to claim 1 , wherein a sealant is capable of being inserted in the gap after removing the connecting strips.
9. An expansion joint structure for concrete slabs, comprising:
a first profile element to be attached to an edge of a first concrete slab;
a second profile element to be attached to an edge of a second, adjacent, concrete slab; and
a removable connecting strip connected between said first and second profile elements that forms a gap between said first and second profile elements,
wherein said connecting strip has first and second edges and a center between said first and second edges and is attached by said first edge to said first profile element and by said second edge to said second profile element; said first and second edges being thinner than said center.
10. The expansion joint structure according to claim 9 , wherein there are two connecting strips and a first connecting strip is at an upper edge of the gap and a second connecting strip is placed at a lower portion of the gap.
11. The expansion joint structure according to claim 9 , wherein a cross section of the first profile element is substantially trapezoidal in order to transfer shear stresses.
12. The expansion joint structure according to claim 9 , wherein at least one of said first and second profile elements include bondage elements.
13. The expansion joint structure according to claim 9 , wherein a sealant is insertable into the gap when the connecting strip has been removed.