Abstract:
Заявленный способ изготовления строительных изделий на магнезиальном вяжущем включает подготовку, дозировку и приготовление смеси с перемешиванием составляющих до получения однородной массы с последующим ее формованием, схватыванием и перемещением изделий на отстаивание на 27-28 суток. Причем формование изделия осуществляют пластами послойно на поверхности с подогревом до температуры 20-35 °С с помощью устройства с вальцами. Между слоями укладывают прокладку, например пленку. Кроме того, в процессе формования каждый слой пласта армируют сеткой из стекловолокна и нетканого материала и оставляют пласты на поверхности с подогревом на 16-18 часов для отвердевания и начального набора прочности. При этом, перед отправкой продукции на отстаивание, осуществляют предварительный раскрой пластов, далее, после отстаивания, продукцию нарезают по точным размерам.
Abstract:
A method for producing a laminated product including applying a slab product to at least one surface of a substrate, the method including placing the substrate onto the slab material when the slab product is in a semi set partially cured state, then allowing the laminated product to cure. Preferably the slab is cement based and the substrate is a masonry product, already manufactured and cured, eg tiles, mosaics, bench tops. The method may alternatively cast a cementitious slab first, and then when that is partially cured pour the cementitious substrate onto it, then cutting the whole assembly into smaller pieces while the whole assembly is still in a partially cured semi set state.
Abstract:
The invention provides a knitted spacer fabric having a tightly knitted bottom layer (10), a more loosely knitted upper layer (12) and linking fibres (14) extending across the space (16) between the lower and upper faces (10,12). Settable material, e.g. cement, is introduced into the space (16) between the upper and lower faces and can be caused to set by the addition of a liquid, e.g. water. Until set, the fabric is flexible and can be shaped but after the material in space (16) has set, the fabric is rigid and can be used as a structural element in a wide range of situations. The bottom layer (10) has an extension (24) that extends beyond the upper face (12) and is connected to the upper face by elastic connecting fibres (26) that draw the extension towards the other face, thereby at least partly closing the space at the edge of the cloth and preventing the settable material from spilling out. In addition, the packing of the settable material and maximum space between the faces are such that only a predetermined amount of liquid can be accommodated within the space and that amount is matched to the water required to set the cement.
Abstract:
The application provides a concrete product. The concrete produce comprises a lightweight concrete mixture and one or more at least one claddings an extruding process forms the lightweight concrete mixture. The one or more claddings are attached on one or more surfaces of the concrete product.
Abstract:
The invention provides a method of making a construction element. The method includes the steps of forming a peripheral frame, placing the frame on a generally horizontal support surface such that the support surface and the frame together define an upwardly open mould cavity; introducing a settable filler substance into the mould cavity, allowing the filler substance to set sufficiently such that it is fixed to the frame, attaching reinforcing to the frame which reinforcing serves to reinforce the set settable filler substance, wherein the frame is formed of angle iron frame elements, each of which has a pair of perpendicular limbs, the frame being formed and placed on the support surface such that one of the limbs of each frame member extends upwardly from the support surface generally perpendicular thereto and the other limb of each frame member extends inwardly from the upper edge of the associated one limb generally parallel to and spaced from the support surface. The invention also provides a construction element produced by the method and a method of erecting a structure using the construction element of the invention and a structure erected by that method.
Abstract:
A metal frame defined by sides of cold formed steel channel section defines an open space. The space is covered by a mesh and a breathable membrane and a layer of self-setting self levelling composition is applied and allowed to set to form a wall panel for the inside of a room.
Abstract:
A method for the surface treatment of a substrate, for example concrete roof tiles, comprising spreading a layer of water-containing hardenable paste containing binder and other particles, for example a cement based slurry, covering the paste layer with (a) a flexible membrane or (b) a plate or (c) first a flexible membrane then superimposed thereon a plate, the plate or membrane having an upper-surface and a smooth under-surface, optionally vibrating the membrane-covered or plate-covered area of the paste layer, such that vibration is transmitted through the membrane or plate, to the paste layer, and either removing the membrane, plate or plate and membrane then hardening the paste layer on the substrate , or at least partially hardening the paste layer on the substrate with the membrane, plate or plate and membrane in place.
Abstract:
A high performance (10) door comprising a door shell (14) having a generally planner construction with marginal edges and at least one door skin (18) helping to define an interior door cavity (16) is disclosed. The door member is preferably constructed of a gas-entrained cementitious material and has a compressive strength of at least about 30 Ibf/in 2 when measured using ASTM C-39. A method for forming a door member for use in construction with the door generally comprising: providing a door shell (14) placing the shell (149 in a fixture, filling the interior door cavity (16) with a gas-entrained cementitious material, green-strength curing the gas-entrained cementitious material, and removing the door shell (14) from the fixture is disclosed. The cured gas-entrained cementitious material provides a gas-entrained cementitious core for use in conjunction with a door.
Abstract translation:公开了一种高性能(10)门,其包括具有边缘边缘的大致规划结构的门壳(14)和有助于限定内部门腔(16)的至少一个门皮(18)。 门构件优选地由气体夹带的水泥质材料构成,并且当使用ASTM C-39测量时具有至少约30lbf / in 2的压缩强度。 一种用于形成用于门的构造的门构件的方法,通常包括:提供门壳(14),将壳体(149)放置在固定装置中,用气体夹带的胶结材料填充内门腔(16),绿色 - 强度固化气体夹带的水泥质材料,并从夹具中取出门壳(14)。固化气体夹带的水泥质材料提供了一种与门一起使用的夹带水泥核心。
Abstract:
A combination dense/porous structure includes a porous element having an outer surface defining a shape having a bulk volume, the element includes a continuous framework having struts defining a plurality of interconnecting interstices throughout the bulk volume. The porous element has interconnecting interstices extending throughout the volume and opening through the surface. The combination dens/porous structure also includes a dense element formed from a material and having a sintered density of at least 95%, contacting at least a portion of the porous element; and an interconnection zone formed by the inter-penetration of the material forming the dense element into the porous element. The combination dense/porous structures are particularly useful as bone substitute materials and extended release delivery systems, preferable sustained release, for physiologically active agents. The interconnection zone can also be formed by a bonding phase that may or may not be the same material as the dense and/or porous element. A process for producing a combination dense/porous structure includes: providing a porous element; providing a dispersion comprising a ceramic or metal powder and a binder; contacting the dispersion with the porous element whereby the slip at least partially penetrates into at least a portion of the porous element to form an interconnection zone and a dense element formed from the dispersion and adjacent to the interconnection zone to form a dense/porous structure; treating the dense/porous structure to form a green dens/porous structure; and curing, drying, and/or heating the green dense/porous structure to form the combination dense/porous structure.