Terrazzo is a relatively common building decoration material at present. Because terrazzo is rich in raw materials, the price is much lower than other floor materials, the construction process is simple, and the decorative effect is good, it has been widely used.
Tools/Materials
Cement: No. 425 and above Portland cement and ordinary Portland cement should be used for the primary color terrazzo surface. For colored terrazzo, white or colored cement should be used. For the ground of the same single project, the same factory batch number of cement should be used.
Sand: Medium sand, passing through a sieve with an aperture of 0.63mm, the mud content shall not exceed 3%.
Stones (stone rice): clean and free of debris marble grains should be used, and the grain size is generally 4-12 mm unless otherwise specified, or large, medium and small stones are mixed in a certain proportion. It is advisable to use the same batch of stones from the same production area for the same unit project. Stones with different colors and specifications should be stacked in different categories.
Glass strip: Determined by the design or cut from ordinary 3mm thick flat glass into a glass strip with a width of about 10mm (depending on the particle size of the stone), and the length is determined by the size of the block. ,
Copper strip: use ≥3mm thick copper plate, about 10mm wide (depending on the particle size of the stone), the length is determined by the size of the block, and the copper strip must be straightened before it can be used. Drill four holes with a diameter of 2mm per meter at the lower 1/3 of the copper strip, and thread them with iron wires for later use.
Pigment: Light-resistant and alkali-resistant mineral pigments are used, and the mixing amount is not more than 12% of the weight of the cement. Do not use acidic pigments. If colored cement is used, it can be directly mixed with stones.
Others: oxalic acid, floor wax, lead wire with a diameter of φ0.5～1.0mm.
steps/methods
Terrazzo floor screed
⑴Break ash cakes and make punching ribs: the method is the same as the cement mortar plastering on the ground of the building.
⑵ Brush plain cement slurry bonding layer: The method is the same as the cement mortar plastering on the floor of the building.
(3) Spread cement mortar leveling layer: use 1:3 dry hard cement mortar for the leveling layer, first spread the mortar flat, then use a pressure ruler to press the punching ribs to level it, and then use a wooden trowel to smooth and compact it. The surface is required to be flat and dense. Keep it rough. After the leveling layer is applied, it should be watered and maintained for at least one day the next day.
