This article explains the performance and application of Sintered stone in detail, mainly addressing the following issues:
I. What is Sintered stone?
Compared with traditional materials, Sintered stone's realistic 3D stone-like texture, delicate texture, hard and flexible wear-resistant qualities, strong on the top. Complex and varied colours and translucent materials, so that it from the traditional advanced to the field of architecture, from furniture furnishings to the overall design of many aspects of perfect integration.
Sintered stone is made of natural stone and inorganic clay through a special process, with the help of more than 30,000 tonnes of presses to press, combined with advanced technology, after more than 1200 ℃ high temperature firing and become. The thinnest Sintered stone is only 3mm, the largest existing specification: 3600×1200mm, which can withstand cutting, drilling, grinding and other processing of oversized new finishing materials.
1、Advantages (1) natural raw materials, non-toxic and non-radiation production of materials required from natural minerals. Both the beauty of natural stone, and better than the natural texture and strong practicality and plasticity; purely natural selection of materials, food-grade surface, 100% recyclable, non-toxic and non-radiation, can be in direct contact with food, environmental health.
2) Oversize (3600*1200) belongs to oversize large-area finishing materials, which can reduce the division of space and make the space more holistic. Relative to stone and tile, Sintered stone is very light weight, 3mm ultra-thin Sintered stone weighs only 7kg. Sintered stone thickness can be 3mm without loss of performance, the impact resistance of 6mm-thick rock plate is equivalent to 30mm-thick granite.
3）Diverse textures
4）Wide range of application scenes
5）Fire-resistant, high temperature resistant
A1 grade fireproof Sintered stone, 1280 ℃ high temperature resistance performance, open fire burning, will not crack, discolouration. No release of toxic substances; high temperature objects can be directly contacted, natural inorganic components, will not emit any gas odour, super hardcore strength so that Sintered stone in the culinary world also occupy a certain seat.
(6) high hardness, scratch-resistant, corrosion-resistant Sintered stone has a hard texture, more scratch-resistant than natural stone, quartzite; good brand Sintered stone Moh's hardness of 6 (Moh's hardness of 3-4 levels of marble and 6-7 levels of granite as a reference), you can use a steel knife to test scratches; Sintered stone's strong corrosion resistance can also be used for acid and alkali laboratory countertops, hospitals, antibacterial walls and operating countertops and other high demand for The strong corrosion resistance of rock slab can also be used in acid and alkali laboratory countertops, hospital antibacterial walls and operation countertops which have higher requirements.
(7) Zero penetration, extremely stain-resistant water permeability of one ten thousandth is a new indicator of man-made building materials, stains can not penetrate, with a wet towel can be wiped clean, simple and fast and will not breed bacteria, 5 level stain resistance and antibacterial and antimicrobial effect, easy to achieve the certification of food-grade surfaces.
(8) the quality of light and thin conventional Sintered stone quality is only 1/3 of the traditional ceramic tiles, and some ultra-thin models are even less than 1/3 of the traditional ceramic tiles (traditional ceramic tiles with an average weight of 23-27kg / square metre).
2, shortcomings
(1) Sintered stone burst edge In the Sintered stone cut board edge position, usually because of uneven force or force concentration (heavy bumping machine), it is easy to cause the cut board section position surface detachment, the formation of burst edge phenomenon, especially in the transport and installation of the most likely to occur.
Therefore, professional installation and cutting is required.
2、Preparation of special tools Including but not limited to: industrial-grade tile suction cups, large-size mobile brackets, lightweight plastic hammers (tile vibrators), leaning rulers, steel grouting knives, grey spoons (a number of them), ceramic tile levellers, sponge caulking trowels, cleaning sponges and so on.
3、Paving construction process (1) grass-roots levelling and processing level infrared instrument to check the grass-roots flatness and verticality, plastering and levelling, sanding and a certain degree of roughness, to ensure that the grass-roots flatness in line with the requirements of the installation of Sintered stone (2 metres measuring tape test, the allowable deviation of the wall 2 mm, the allowable deviation of the ground flatness of 3 mm). Grass-roots treatment: ■ The grass-roots level should be solid, firm, no hollow drum, sanding, tensile strength should not be less than 0.4MPa; when the tensile strength of the grass-roots level is less than 0.4MPa, it should be strengthened treatment. ■ Using hollow drum hammer and other special tools for grass-roots hollow drum detection, hollow drum parts should be cleaned up, painted interfacial agent treatment, with levelling mortar repair smoothing. ■ Using a level ruler, ruler for grass-roots leveling test, grass-roots surface flatness deviation should not be more than 3mm per 2 linear metres.
Subgrade levelling: ■ When the level of grass-roots level does not meet the requirements, should use levelling mortar (preferably self-levelling mortar) for grass-roots levelling treatment. ■ Self-levelling mortar construction should reach the design thickness, if the design thickness of self-levelling ≤ 4mm, you need to use self-levelling special scraper for scraping, to assist in levelling; self-levelling floor full maintenance needs to be carried out after the cut joints, the width of the cut joints for 3 ~ 4mm, the depth of the structural layer; cut the joints after the use of a hoover to clean up, using a glue gun along the joints filled with elastic sealant, and scrape with a flat shovel. ■ Self-levelling mortar construction should be completed after maintenance of not less than 24h, and do a good job of finished product protection.
Sintered stone handling: ▪ Sintered stone must be carried on its side, not flat, to avoid twisting and deformation.
(2) Positioning of spring line and cutting of sheet according to the design drawings of the Sintered stone compartmentalisation scheme on the grass-roots level, to ensure that the design dimensions and the actual size of the site to match. According to the bullet line compartmentalisation size with manual guide rail cutting knife for cutting, with electric cutting machine for opening processing.
(3) adhesive preparation site in accordance with the proportion of water for the preparation, with a batch of grey knife to pick up the mixing of adhesive, adhesive in about 5 seconds from the batch of grey knife on the natural fall, at this time the viscosity of the adhesive for the most appropriate. (The operating time of the adhesive is 2 hours at room temperature.)
Binder mixing: ■ According to the ratio of using special binder, first pour water or emulsion in the bucket, then add binder powder in the water; use electric mixer to mix into paste, let it stand for 2 minutes, and then continue to mix into a uniform slurry without obvious lumps or paste lumps. ■ The stirred paste is left to stand for 5~10 minutes, and then stirred slightly for 1~2 minutes before using. ■ After mixing the binder beyond the open time, do not add water or emulsion again to re-mix using.
(4) Adhesive construction with the straight edge of the toothed spatula in front of the paste surface coated with adhesive, with the toothed spatula along the vertical direction of the adhesive will be combed out of the full and uninterrupted jagged stripes, along the horizontal direction and then combed once again.
(5) Sintered stone back coating with a toothed spatula in the paste surface of the Sintered stone flattened coated with a layer of adhesive, the thickness of about 6-8mm, to ensure that the Sintered stone and adhesive adhesion. ⑥Check whether it is full of slurry (the back of Sintered stone with a toothed knife to scrape the grooves) The back of Sintered stone with a toothed knife to scrape the grooves and check whether it is full of slurry, it must be ensured that the fullness of the adhesive, to avoid the phenomenon of hollow drums. (7) Sintered stone fixed on the wall using vacuum suction cup plate lifter will be cut and scraped good adhesive Sintered stone affixed to the wall, the edge of the sheet pre-embedded leveller (interval of 40-60cm a), infrared locator to check the perpendicularity, and the use of electric rubber mallet or vibrator on Sintered stone extrusion, to ensure that the thickness of the adhesive is uniform. Sintered stone laying: ■ Place the Sintered stone to be tiled against a large slab scraper hanger with the bonding surface facing outwards. ■ Grass-roots and Sintered stone bonding surface to keep clean, no dust, no open water. ■ Double-sided scraping: in the grass-roots surface uniform batch of adhesive, thickness of 3 ~ 5mm; in the Sintered stone bonding surface uniform batch of adhesive, thickness of 2 ~ 3mm. ■ Using a serrated spatula to comb out even, full, clear continuous stripes, the directions should be parallel to each other. ■ Angle the sawtooth spatula at an angle of 45~60° with the wall and floor, and the bonding surface of the sheet. ■ Control the thickness of the bonding layer to be 5mm~8mm, and the dosage of binder to be 8~12 kg/m2. ■ Press from the middle of the Sintered stone to all sides using a vibrating flat spreader, with the pressing direction parallel to the stripe of the binder, to ensure that the air between the Sintered stone and the base layer is fully discharged, so as to make the full slurry rate of the bonding layer reach 100%. ■ Clean up any excess binder squeezed out of the joints.
(10) surface cleaning and protection with a scraper and rag in a timely manner will be residual, overflow adhesive clean up, at the same time do a good job of cleaning and sanitation of the surface of Sintered stone and brick joints, and corner guards to focus on the protection of Sintered stone edges, corners and other easy to be bumped into the place. (11) caulking to be the surface of the rock slabs and crevices after cleaning up, check the crevices of whether to leave dust, water, etc., to confirm that the clean, with Sintered stone with the same colour of the jointing agent. Caulking treatment, with a ball hammer to erase the excess seam sealant, 4 hours later with a spatula to shovel away the excess seam sealant, and finally with a clean sponge to do the final surface cleanup of Sintered stone, to complete the process of Sintered stone paving.
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