In some embodiments, a method may include preparing building forms including at least some cementitious materials. The method for preparing forms may include mixing substantially dry cementitious material particles with closed cell foam particles to form a substantially dry composition. In some embodiment, at least some of the cementitious material particles may adhere to at least some surface deformations on the surface of the closed cell foam particles. In some embodiments, the method may include mixing a second portion of water with the substantially dry composition for a second period of time to form a partially wet composition. In some embodiments, a method may include forming a building form including at least some cementitious materials from the partially wet composition. In some embodiments, the closed cell foam particles may include expanded polystyrene. In some embodiments, a ratio of the water to cementitious material particles may range from 0.20 to 0.40.

An aspect concerns a method (10) of producing a precast building product. The method (10) includes providing a mould (26) to receive a pourable building substance to be cured. The method further includes the steps of pouring the building substance into the mould and allowing the poured building substance to cure inside the mould to form a sold mass body. The method further includes providing a wire-cutting assembly operatively associated with the mould and cutting the solid mass body inside the mould into separate building products.

A method of slip forming a concrete structure can include using a first slip form mold that travels along a path to form a portion of a concrete structure by delivering a first flow of concrete into the first mold through a first hopper. The first hopper can be configured to receive the first flow of concrete. The portion of the concrete structure can be modified using a second slip form mold different from the first mold by advancing the second mold along the concrete structure and, while advancing the second mold, delivering a second flow of concrete into the second mold through a second hopper that is configured to receive the second flow of concrete.

This method for manufacturing a railway track support comprising a plurality of prefabricated elements (28) comprises the following successive steps: providing, in a production zone (16) for prefabricated elements (28) located near an installation zone (14), a movable insertion machine (52) configured to arrange at least one insert (34) in a fresh concrete block, the production zone being separate from the installation zone; pouring and shaping fresh concrete in order to form individual fresh concrete blocks having predetermined dimensions; arranging at least one insert in each fresh concrete block using the movable insertion machine (52); drying the fresh concrete blocks to obtain the prefabricated elements (28).

A method of slip forming a concrete structure can include using a first slip form mold that travels along a path to form a portion of a concrete structure by delivering a first flow of concrete into the first mold through a first hopper. The first hopper can be configured to receive the first flow of concrete. The portion of the concrete structure can be modified using a second slip form mold different from the first mold by advancing the second mold along the concrete structure and, while advancing the second mold, delivering a second flow of concrete into the second mold through a second hopper that is configured to receive the second flow of concrete.

Prefabricated floor element (1) having an elongated shape wherein a longitudinal direction (X), a transversal direction (Y), a height direction (Z), two end faces (11) which delimitate the element (1) in the longitudinal direction (X), two lateral faces (12) which delimitate the element (1) in the transversal direction (Y), a lower face (13) and an upper planar face (14) that delimitate the element (1) in the height direction (Z) are defined, which comprises transversal continuous upper grooves (15) on the upper planar face (14) or lateral grooves (26) on the lateral faces (24), the lateral grooves (26) extending from the lower tab (TS) to the upper planar face (24). The invention also relates to a structure comprising such prefabricated floor element (1) and further comprising a linear supporting element (LS) which supports one end of the prefabricated floor element (1) such that in the linear supporting element (LS) a supporting surface (51) is defined and a moment resisting system (MS) arranged on the linear supporting element (LS) and facing an end face (11) of the prefabricated floor element (1) and an upper concrete layer (LC) poured on top of the element (1) or in the shear key (SK) defined between two adjacent floor elements. The invention also relates to an installation for manufacturing the floor elements (1, 2).

Method and apparatus for casting prefabricated concrete products with a substantially horizontal slipform casting process, where the concrete mass is fed in at least one feeding stage to a slipform casting mold compacting and defining the product to be cast, wherein at least one part is embedded in the concrete mass after the at least one concrete mass feeding stage and before the final compaction of the upper surface of the product to be cast.

A method for manufacturing a prefabricated concrete product is disclosed, in which method, a concrete slab with a recess at its upper surface is cast with slipform casting on a casting bed, and after the slipform casting of the slab the recess of the fresh cast slab is equipped with ducts, piping and/or wiring components, after which the recess is covered with concrete mass, and the concrete product is left to cure. The invention also relates to such a prefabricated concrete product.

The invention relates to the manufacture of a reinforced slab-shaped building element (E) having a length (L), a width (W) and a thickness, said slab-shaped building element (E) comprising an upper concrete plate anchored to a lower concrete plate with a top surface and a bottom surface, said upper concrete plate being cast from relatively higher strength concrete laid out upon said top surface, said lower concrete plate being of a less strong concrete, said lower concrete plate including a base contiguous with a plurality of raised portions integral therewith, said raised portions being spaced apart in the direction of said length (L) and said width (W), said plurality of raised portions defining between them a network of recesses, at least some of said recesses including reinforcing bars (R), said raised portions and said recesses together defining said top surface.

A method of slip forming a concrete structure can include using a first slip form mold that travels along a path to form a portion of a concrete structure by delivering a first flow of concrete into the first mold through a first hopper. The first hopper can be configured to receive the first flow of concrete. The portion of the concrete structure can be modified using a second slip form mold different from the first mold by advancing the second mold along the concrete structure and, while advancing the second mold, delivering a second flow of concrete into the second mold through a second hopper that is configured to receive the second flow of concrete.