A mold assembly and method for molding two concrete blocks in face-to-face non-contacting relationship forms blocks having smooth front faces. The mold assembly includes a mold box having two mold cavities configured to form two blocks in face-to-face non-contacting relationship. A common partition plate separates the two mold cavities and opposite sides of the partition plate form the smooth front faces of the blocks. The two mold cavities are each configured to form a block having a raised front face with a beveled edge around its entire perimeter and a border around the entire perimeter of the beveled edge. The portions of the border at the top and the sides of the raised front face are curved and the portion of the border at the bottom of the raised front face is straight. A core bar is slidably inserted into the mold box beneath the bottom of the partition plate, and opposite sides of the core bar extend into and form the front bottom portions of the mold cavities.

A mold assembly and method for molding two concrete blocks in face-to-face non-contacting relationship forms blocks having smooth front faces. The mold assembly includes a mold box having two mold cavities configured to form two blocks in face-to-face non-contacting relationship. A common partition plate separates the two mold cavities and opposite sides of the partition plate form the smooth front faces of the blocks. The two mold cavities are each configured to form a block having a raised front face with a beveled edge around its entire perimeter and a border around the entire perimeter of the beveled edge. The portions of the border at the top and the sides of the raised front face are curved and the portion of the border at the bottom of the raised front face is straight. A core bar is slidably inserted into the mold box beneath the bottom of the partition plate, and opposite sides of the core bar extend into and form the front bottom portions of the mold cavities.

A hollow core element forming system including a measuring device configured to determine a location of a welding plate assembly on a casting bed. The welding plate assembly being connected to one or more prestressed strands. A hollow core forming mechanism has a strand guide located at a leading end of a support frame of the hollow core forming mechanism. The strand guide is configured to engage the one or more prestressed strands when the strand guide is in a closed position and to disengage the one or more prestressed strands when the strand guide is in an open position without interference between the strand guide and the welding plate assembly. A strand guide controller unit causes the strand guide to rotate between the open position and the closed position based on the location of the strand guide relative to the welding plate assembly.

A hollow core element forming system including a measuring device configured to determine a location of a welding plate assembly on a casting bed. The welding plate assembly being connected to one or more prestressed strands. A hollow core forming mechanism has a strand guide located at a leading end of a support frame of the hollow core forming mechanism. The strand guide is configured to engage the one or more prestressed strands when the strand guide is in a closed position and to disengage the one or more prestressed strands when the strand guide is in an open position without interference between the strand guide and the welding plate assembly. A strand guide controller unit causes the strand guide to rotate between the open position and the closed position based on the location of the strand guide relative to the welding plate assembly.

A modular pavement slab including a paving material set around a plurality of forming tools and defining a side face and a top surface. Each of the forming tools includes an elongate body extending along a longitudinal axis and having a sidewall exterior surface configured for removal of the elongate body through the side face. Each of the forming tools also includes a riser releasably coupled to the elongate body and extending in a direction noncollinear to the corresponding longitudinal axis.

A retaining wall block having a false joint and a system of retaining wall blocks. The retaining wall block includes a body having a first textured surface and a second textured surface and a false joint dividing the first and second textured surface. The false joint can have a depth divided by the width greater than two inches. The false joint can have an interior angle of less than ten degrees. The system includes a plurality of retaining wall blocks and a first course of retaining wall blocks engaged with a second course of retaining wall blocks below. Each block in the system comprising a front face having a first textured surface and a second textured surface and a false joint dividing the first and second textured surface. The false joint can extend a predetermined depth of a third surface.

A retaining wall block having a false joint and a system of retaining wall blocks. The retaining wall block includes a body having a first textured surface and a second textured surface and a false joint dividing the first and second textured surface. The false joint can have a depth divided by the width greater than two inches. The false joint can have an interior angle of less than ten degrees. The system includes a plurality of retaining wall blocks and a first course of retaining wall blocks engaged with a second course of retaining wall blocks below. Each block in the system comprising a front face having a first textured surface and a second textured surface and a false joint dividing the first and second textured surface. The false joint can extend a predetermined depth of a third surface.

The invention relates to a method for producing a concrete workpiece (1, 60), wherein fresh concrete is poured into a negative (35, 80) of the workpiece (1, 60), and the concrete at least partly hardens in the negative and is then removed. The invention is characterized in that a positive (5, 71) is produced from me concrete workpiece (1, 60) to be produced, the positive is arranged in a casting formwork (20, 70), and negative fresh concrete is then poured onto the positive. The negative fresh concrete is removed after being at least partly hardened (35, 80), and the concrete body produced in this manner is used as a negative (35, 80) in order to produce the workpiece (1, 60) therein using the fresh concrete poured into the negative (35, 80).

Devices and methods for forming voids or cavities in concrete such that reinforcing bars can be used to connect different pours of concrete, the devices including an insert having a base and an elongate member extending from the base, and the method including coupling the insert to formwork, pouring concrete into the formwork, which surrounds the insert, allowing the concrete to partially cure, such that it retains its shape, removing the formwork and insert to form a void in the partially cured concrete, inserting a reinforcing bar into the void, applying adhesive to adhere the reinforcing bar to the concrete, and pouring concrete around the reinforcing bar, such that the reinforcing bar joins the two pours of concrete together via the void and adhesive.

Devices and methods for forming voids or cavities in concrete such that reinforcing bars can be used to connect different pours of concrete, the devices including an insert having a base and an elongate member extending from the base, and the method including coupling the insert to formwork, pouring concrete into the formwork, which surrounds the insert, allowing the concrete to partially cure, such that it retains its shape, removing the formwork and insert to form a void in the partially cured concrete, inserting a reinforcing bar into the void, applying adhesive to adhere the reinforcing bar to the concrete, and pouring concrete around the reinforcing bar, such that the reinforcing bar joins the two pours of concrete together via the void and adhesive.