摘要:
[Problem]A mortar peeling method which can keep a sound generated during a peeling work to an allowable quiet sound and can peel a mortar off a concrete framework smoothly.[Solution]In a mortar peeling method, by gradually extending a piston rod 42 of a hydraulic jack 13 in a mortar peeling device 10A forward in one direction, a cutter 14 is gradually advanced forward in one direction so as to execute a mortar peeling process of peeling a mortar 21 with a predetermined thickness off a concrete framework 20 by using the cutter 14. In the mortar peeling method, after the piston rod 42 of the hydraulic jack 13 is extended forward in one direction and the mortar 21 is peeled, by retreating the piston rod 42 rearward in one direction, a session of the mortar peeling process is completed.
摘要:
The process provides for the structural reinforcement of manufactured articles made of stone or, in general, agglomerates by means of a sequence of steps which comprise the following: (a) the article to be treated is heated; (b) spraying on one surface of the article a particular adhesive called primer; (c) spraying on the same surface a resin preferably containing glass fibers or fibers of another material; (d) spraying on the same surface grit of stone having a constant and defined granulometry; (e) applying an action of vibration or compression on the article in order to facilitate the cohesion of the grit with the resin; (f) letting the resin undergo a catalytic reaction which eventually may require application of heat; (g) levelling the surface by mechanical operations. The same process may be repeated on the other surface of the article if one desires to cut the article along its thickness for the purpose of obtaining a very thin product. The process is also aplicable to agglomerated articles for the purpose of obtaining very thin products and of limited weight while the mechanical and aesthetic properites remain unaltered. The product obtained by the process of the application offers structural properties substantially superior to the properties of the starting articles and permits to utilize material which is structurally weak and defective.
摘要:
A composite panel consists of a natural stone layer (1) and a reinforcing layer (13) that has a fibre layer (2) embedded in synthetic resin, and at least one layer (3) of synthetic resin. The fibre layer (2) serves as tensile reinforcement and the layer (3) of synthetic resin serves as compression reinforcement for the natural stone layer (1), so that the composite panel can absorb both positive and negative bending moments. The synthetic resin layer (3) is reinforced, for example, with a fine-mesh glass fibre textile (6) that faces towards the tensile reinforcing fibre layer (2) and an adjacent glass fibre mat (8). In order to produce the composite panels, natural stone panels that have been cut to a greater thickness are coated on both sides with the reinforcing layer (13). A plurality of coated natural stone panels are then arranged so as to be equally spaced on their center planes, and then simultaneously divided.
摘要:
Pieces of marble or similar natural stone having a plurality of plane faces are stacked in a liquid-tight container. Said pieces are arranged with their plane faces facing each other so as to form a plurality of parallel layers. Thereafter, a vacuum is applied in said container and, while maintaining the latter under vacuum, a fluid hardenable binding composition, such as a synthetic resin, is then poured into said container. Said composition flows down through the interstices existing in and around the stack of pieces, until it completely covers said stack. Thereafter, the inside of the container is brought to atmospheric or superatmospheric pressure, thus causing said binding composition to thoroughly penetrate into all said interstices and into all the cavities of the pieces opening on their surface, and then said binding composition is allowed to harden.
摘要:
The invention relates to a method of manufacturing surface elements such as tiles or panels consisting of a thin lamina of natural stone bonded to a backing consisting of a multicellular paper core material of substantially greater thickness than the lamina which at least on the side remote from the stone lamina has a skin of tenacious sheet material bonded thereto. The method comprises bonding the backing to a stone slab and thereafter severing from the slab a thin lamina of stone with the backing attached.
摘要:
Example embodiments are directed to a wafer dividing apparatus and method thereof. The wafer dividing apparatus includes a chuck unit having upper and lower chucks, a cutting wire that is provided in a space between the upper and lower chucks to cut a wafer and driven by a first driving unit, and an etchant supplying nozzle supplying etchant to a groove of the wafer, which is formed by the cutting wire.