A manhole base liner (1), in particular for a wastewater manhole, has a base body (2) which comprises a tread surface (3) and at least one pipe connection opening (5). The base body (2) is produced in one piece from flexible material with a wall thickness, with which it can be bent together substantially arbitrarily in at least partial regions.

A mould liner for a fabrication assembly is disclosed. The fabrication assembly is for fabricating an elongate concrete article in a substantially upright orientation and includes a core assembly and an outer mould assembly defining a mould cavity between the core assembly and an inner moulding surface of the outer mould assembly with the outer mould assembly being separable following casting of the elongate concrete article to strip the outer mould assembly from the elongate concrete article. The mould liner during casting forms an intermediate layer between the inner moulding surface of the outer mould assembly and the elongate concrete article being cast, wherein on stripping of the core and outer mould assemblies following casting, the mould liner is adapted to form an outer containment layer to the elongate concrete article.

In summary, the invention concerns a mold frame for the production of molded pieces, comprising: at least one mold cavity, the at least one mold cavity being defined by a plurality of mold walls, wherein at least one mold wall of the mold cavity is a mold wall that is displaceably attached to the mold frame.

Disclosed is an apparatus for bonding a release film for separating an artificial stone from a rubber mold and, more particularly, to an apparatus for bonding a release film for separating an artificial stone from a rubber mold that allows for easy separation of a mold for manufacturing an artificial stone and an artificial stone manufactured in the mold without applying a release agent.

In some embodiments, a cured panel is formed from a curable material and comprises at least one enhancing material applied to a surface of the panel or embedded in a surface of the panel. In some embodiments, a method comprises providing a form liner having an enhancing material oriented on or attached to the form liner, and then providing a curable material. In some embodiments, a method comprises providing a form liner having at least one cavity containing a curable mixture, and then providing a curable material.

A manhole base liner (1), in particular for a wastewater manhole, has a base body (2) which comprises a tread surface (3) and at least one pipe connection opening (5). The base body (2) is produced in one piece from flexible material with a wall thickness, with which it can be bent together substantially arbitrarily in at least partial regions.

A plant for the production of slabs from a mixture of agglomerate comprises a station (50) with a mixture distribution unit (52) which pours the mixture onto the inner surface of a slab forming mould (11) present in the station. The mould (11) is provided with a sheet (15) of plastic protective material arranged above the inner surface of the mould and which forms the surface for contact with the mixture which is introduced into the mould by the distribution unit (52). The station comprises air suction means which are coupled/connected to suction ducts (54) which are present in the mould and which emerge with their front end inside the mould in a zone of the mould situated between the inner surface of the mould and the sheet (15), so as to allow the suction of air between the sheet and this inner surface and bring the sheet (15) against this surface by means of a vacuum. A method for the production of slabs is also described.

Aim of the present invention is to obtain cementitious products having smooth, planar surfaces and low thickness for applications having aesthetic purpose, of integrated architecture or as substrates, for example for a thin-film photovoltaic unit, with controlled curling and surface roughness, manufactured by mold casting of a fluid composition comprising: I. a hydraulic binder; II. one or more aggregates; III. an anti-shrinkage agent; IV. a superplasticizer agent; V. water, wherein the percentage by weight of said hydraulic binder in the composition is lower than that of said aggregates, and wherein said aggregates have a maximum diameter d.sub.max not greater than one third of the thickness of the product, the final product thus having an arithmetic mean surface roughness Ra not greater than 500 nm and curling not greater than 1500 micron.

Mould for casting of thin samples made of cement-based materials, for a maximum of 10 small samples (10102 mm or 1/16 inch), consists of a solid stainless steel base plate, stainless steel upper frame-plates and thin plastic foil. The stainless steel frame plates of various lengths are assembled on the base plate and fastened with screws to form a frame with 10 free spaces (cells) into which the concrete/cementitious material is poured. The thickness (2 mm or 1/16 inch) of the thin frame plates determines the thickness of the cast samples. Plastic transparent foil is placed over the surface of the base plate for easier sample removal. The advantages of the mould are: possibility of assembling and disassembling of all mould parts and hence safe sample removal after 24 hours, multiple usage as well as easy maintenance and cleaning.

A mold (10) intended to form a slab from a mixture of agglomerate, a sheet (15) of PVA-based plastic material deposited over the mold surfaces so as to form with it a surface for subsequent contact with the mixture introduced into the mold for forming the slab, whereby in at least some areas a layer (14) of a fluid agent containing PVA in a solution is interposed between the sheet (15) and the mold surfaces. A system involving a plant and mold are also described.