Leave-in-place concrete formwork combining plate dowels, divider plates, and/or finishing, armoring and/or sealing molding

A concrete slab joint assembly comprising:

• a divider plate positionable such that the divider plate separates a portion of a first concrete slab from a portion of an adjacent second concrete slab,
• a first rail having a first element and a second element extending transversely from the first element,
• a second rail having a third element and a fourth element extending transversely from the third element, and
• a load plate extendable into and between the first and second concrete slabs,
• wherein the first rail and the second rail, when in use, are initially attached to the divider plate such that a portion of the divider plate is positioned between the first and second rails and such that a portion of the fourth element of the second rail overlaps a portion of the second element of the first rail.

A method of forming a joint between a first concrete slab and a second concrete slab, said method comprising:

• securing a divider plate to a substrate,
• attaching a first rail and a second rail to the divider plate such that a portion of the divider plate is positioned between the first and second rails, such that a portion of an element of the second rail overlaps a portion of an element of the first rail, and such that the first rail and the second rail are movable relative to the divider plate when at least one of the first concrete slab and the second concrete slab expands or contracts, and
• thereafter:
• (1) pouring the first concrete slab on a first side of the divider plate, and
• (2) pouring the second concrete slab on a second opposing side of the divider plate.

A concrete slab joint assembly comprising:

• a divider plate positionable such that the divider plate separates a portion of a first concrete slab from a portion of an adjacent a second concrete slab,
• a first castable-in-place rail having a first element and a second element extending transversely from the first element, and
• a second castable-in-place rail having a third element and a fourth element extending transversely from the third element,
• wherein the first rail and the second rail, when in use, are initially attached to the divider plate such that a portion of the divider plate is positioned between the first and second rails, such that a portion of the fourth element of the second rail overlaps a portion of the second element of the first rail, and such that the first rail and the second rail are movable relative to the divider plate when at least one of the first concrete slab and the second concrete slab expands or contracts, the first rail and the second rail, when in use, being cast in the first and second concrete slabs, respectively.

A concrete slab joint assembly comprising:

• a divider plate positionable such that the divider plate separates a portion of a first concrete slab from a portion of an adjacent a second concrete slab,
• a first castable-in-place rail having a first element and a second element extending transversely from the first element, and
• a second castable-in-place rail having a third element and a fourth element extending transversely from the third element,
• wherein the first rail and the second rail, when in use, are initially attached to the divider plate such that a portion of the divider plate is positioned between the first and second rails, such that a portion of the fourth element of the second rail overlaps a portion of the second element of the first rail, and such that a topmost surface of the first rail and a topmost surface of the second rail are generally a same distance from a topmost surface of the divider plate, the first rail and the second rail, when in use, being cast in the first and second concrete slabs, respectively.

A concrete slab joint assembly comprising:

• a divider plate positionable such that the divider plate separates a portion of a first concrete slab from a portion of an adjacent a second concrete slab,
• a first castable-in-place rail having a first element and a second element extending transversely from the first element, and
• a second castable-in-place rail having a third element and a fourth element extending transversely from the third element,
• wherein the first rail and the second rail, when in use, are initially attached to the divider plate such that a portion of the divider plate is positioned between the first and second rails and such that a portion of the fourth element of the second rail overlaps and is spaced apart from a portion of the second element of the first rail, the first rail and the second rail, when in use, being cast in the first and second concrete slabs, respectively.

A concrete slab joint assembly comprising:

• a divider plate positionable such that the divider plate separates a portion of a first concrete slab from a portion of an adjacent a second concrete slab,
• a first rail having a first element, a second element extending transversely from the first element, and a first retaining element, and
• a second rail having a third element, a fourth element extending transversely from the third element, and a second retaining element,
• wherein the first rail and the second rail, when in use, are initially attached to the divider plate such that the first and second retaining elements contact the divider plate, such that a portion of the divider plate is positioned between the first and second rails, and such that a portion of the fourth element of the second rail overlaps a portion of the second element of the first rail, the first rail and the second rail, when in use, being cast in the first and second concrete slabs, respectively.

A method of forming a joint between a first concrete slab and a second concrete slab, said method comprising:

• securing a divider plate to a substrate,
• attaching a first rail and a second rail to the divider plate such that a portion of the divider plate is positioned between the first and second rails, such that a portion of an element of the second rail overlaps a portion of an element of the first rail, and such that a topmost surface of the first rail and a topmost surface of the second rail are generally a same distance from a topmost surface of the divider plate, and
• thereafter:
• (1) pouring the first concrete slab on a first side of the divider plate, and
• (2) pouring the second concrete slab on a second opposing side of the divider plate.

A method of forming a joint between a first concrete slab and a second concrete slab, said method comprising:

• securing a divider plate to a substrate,
• attaching a first rail and a second rail to the divider plate such that a portion of the divider plate is positioned between the first and second rails and such that a portion of an element of the second rail overlaps and is spaced apart from a portion of an element of the first rail, and
• thereafter:
• (1) pouring the first concrete slab on a first side of the divider plate, and
• (2) pouring the second concrete slab on a second opposing side of the divider plate.

A method of forming a joint between a first concrete slab and a second concrete slab, said method comprising:

• securing a divider plate to a substrate,
• attaching a first rail having a first retaining element and a second rail having a second retaining element to the divider plate such that the first and second retaining elements contact the divider plate, such that a portion of the divider plate is positioned between the first and second rails, and such that a portion of an element of the second rail overlaps a portion of an element of the first rail, and
• thereafter:
• (1) pouring the first concrete slab on a first side of the divider plate, and
• (2) pouring the second concrete slab on a second opposing side of the divider plate.

A method of forming a joint between a first concrete slab and a second concrete slab, said method comprising:

• securing a divider plate to a substrate,
• attaching a load plate to the divider plate, the load plate extendable into and between the first and second concrete slabs,
• attaching a first rail and a second rail to the divider plate such that a portion of the divider plate is positioned between the first and second rails and such that a portion of an element of the second rail overlaps a portion of an element of the first rail,
• pouring the first concrete slab on a first side of the divider plate, and
• pouring the second concrete slab on a second opposing side of the divider plate.