Terrazzo flooring in one of the oldest and the most durable form of flooring. Here in Kenya the technology was brought in by Italians in the 1960s.It is said that terrazzo lasts the life time of the building provided it is laid using the right procedure and maintained properly.
Wakmasters Enterprises is located in Nairobi Kenya. We primarily deal in supply of terrazzo materials and hiring of terrazzo machines both electric and engine driven.We do also offer technical advice on issues related to terrazzo.We sell good grade terrazzo materials to guarantee you a good and durable terrazzo floor. The following materials are mainly used in the laying of terrazzo floors:
Whether cutting or grinding steel, stainless steel, steel, stone, masonry material or rail track, Rasta wheels offer long life, great material removal rate and are comfortable to use, with lower vibration levels.
For high stock removal, Rastas flap, fibre and semi-flexible discs are go-to products. For small surface areas and fast weld removal, surface finishing, blending and polishing, look no further than quick change and non-woven discs, which can be used on all metals.
Rasta offers sheets and rolls with cloth or paper backing for use by hand, with a block or on an orbital sander. Quality aluminium oxide provides high cut rate and good resistance to loading for longer product life.
Rastas range of diamond blades are ideal for cutting concrete and building materials, roof tiles, bricks, stone and ceramic tiles. Cup grinders are also available for surface grinding concrete and building materials.
"Abrasives of excellence" reflects Rastas goal to offer superior abrasive solutions to its customers. Quality, precision, durability and long service life all typical characteristics of Rasta products.
There seems to be endless methods to care forhighly polished stone. One of these endless methods is grinding. There are actually three main methods of grinding: grinding with stone abrasives, diamond, or silicone carbide disk. Each is similar in concept but very different in materials used, results, costs, and time.
Stone grinding, the oldest of all themodern methods of restoration, was originally used for ground-in-place, thick dimensional stone of l-inch (2.5 cm) or more. The grinding machine, commonly known as the Achille Grinder (made in Italy), uses stones ranging from 60 to 1800 grit, which should be used progressively in at least six steps in this restoration process.
After grinding and mechanical polishing is complete, the stone is normally polished again with either chemicals, metallic elements, or buffing compounds. The type of stone whether granite, marble, or travertine its chemical composition and hardness determine the selection of the final buffing product used.
There can be certain drawbacks to using this method. An inspection prior to restoration should be made to determine that the flooring was originally installed with no hollow spots in the setting material below the surface and with all the tiles firmly set and free of movement. These two defects could cause cracking and break- age of the stone during restoration, because the 250-pound (113.4 kg) grinder can bounce dramatically while in operation.
As diamond technology developedfor quarrying stone, so did this method of polishing and restoring stone. Its principles are the same as stone grinding except instead of using stones it uses diamond abrasives.Diamond abrasives last much longer than other conventional abrasives. The diamonds are affixed to some type of flexible support material with a bonding agent such as resin or nickel. Unlike stones and screens, diamonds are available in the form of hand pads, belt disks, and flat sheets, so they can be used on many labor-saving machines.Diamond abrasives range from 60 to 3500 grit in the more popular textures. Like stones or screens, they must be used progressively in order to get a smooth, highly reflective finish.Diamond grinding at this time does not remove lippage as well as stone grinding. However, diamond grinding will produce a surface which is as highly reflective as stone grinding.
The diamond grinding machine generally weighs 120 to 180 pounds (54 to 82 kg) and runs much more smoothly and without the bounce of a stone abrasive grinder. Lighter weight and smoother operation in turn make them much safer on stone that has not been set properly. They have not been known to break stone material in the restoration process. Like grinding requires a fine polishing with chemicals, metallic elements, or buffing compounds work o produce the final finished surface. Production rates are 250 to 500 square feet (23 to 46 sq.m) of restored material per day, at an average cost of $3.50 to $5.00 per square foot, depending on the variable listed above.
In theory, silicone carbide issame as stone abrasive and diamond grinding. It also comes in progressive textures from 60 to 1000 grit. It must be used progressively to obtain thebest finish possible. However, its ability to remove scratches and restore the stone to a high polish is limited, Removal of lippage is virtually non- existent. Where cost and speed are main concerns, it does offer a viable option. With production rates of 500 to 1000 square feet (46 to 93 sq.m) per- day and a cost of $2.00 to $3.00 p square foot, this is an economical moderately effective means of restoration.
As with the other two methods, the stone must be finished with chemicals, buffing compounds, or metallic elements. Unlike stone and diamond grinding, the screen disks do not produce satisfactory results on granites. only on marbles and travertines.In order to return stone to the clarity and sharpness desired, the damaged stone must be ground using one of these grinding methods.