Comparison of the advantages and disadvantages of floor marble flooring technology

Floor stone can be said to be the carrier of the aesthetic value of buildings, and the quality of its presentation will affect people’s evaluation of the building. Many indoor and outdoor stone paving projects suffer from significant damage to the building’s image due to the appearance of subsequent lesions. How can we avoid phenomena such as water stains, alkalinity, discoloration, and fractures in the stone paving process?

Firstly, it is necessary to select the corresponding thickness of the stone according to the application location of the stone, to avoid small horses pulling large carts, which may lead to the later fracture and damage of the stone.

Secondly, the protection of finished boards before leaving the factory. At present, there are three main processes for back protection of wet pasted stone:

One is to use permeable waterproofing agents for treatment, which is commonly used for outdoor square floor paving granite and traffic station hall floor paving granite. The second is waterproof adhesive. In earlier years, many marble slabs, whether on the floor or on the wall, would be directly coated with a layer of waterproof adhesive. This treatment increases the strength of the board and indirectly compensates for the insufficient thickness of the 14 and 16-millimeter boards; At the same time, it was also found that the various pathological changes that occurred in the later stage of laying wet pasted finished boards treated with pure waterproof adhesive were somewhat unjustified, at least reducing the incidence of hollowing.

After people realized the problem of insufficient waterproof performance of pure waterproof adhesive, some manufacturers upgraded. First, apply a single component sealant, and then apply a waterproof backing adhesive on top of the organic sealant. This method theoretically isolates moisture from the back leveling layer and adhesive from entering the interior of the stone, but at the same time, it also leads to insufficient adhesion between the inorganic waterproof backing adhesive and the organic sealant, which can easily cause hollowing problems after laying.

The third is to use a two-component sealant combined with quartz sand to treat the back of the wet pasted stone. This process can completely seal the fine pores on the back of the stone, preventing moisture from the leveling layer and binder from entering the interior of the stone and causing lesions. At the same time, it can also avoid the occurrence of hollowing during the later stage of laying the stone. Its disadvantage lies in its high cost, but compared to the price of finished stone slabs, the cost of protection used is still much lower; many times, when the lesions that come from the back of the stone pavement appear, they are either accepted with humiliation or remade. At that time, the cost of manpower and financial resources is not much higher than the cost of protection.

The above are the main forms of back protection technology for floor paving stones currently used. Because there are many types and a high probability of contact with stains on the front of the paving stone, protective agents with waterproof and oil-resistant functions should be selected; A waterproof agent with a simple waterproof function, is only suitable for the front treatment of wall stones.

After the finished board protection treatment is transported to the site for laying, to avoid contamination on the front during cross-construction, sealing plastic protective film is often used for protection, which can bring more problems. Because the paving stone will be seamlessly treated and ground to crystallize in the future, it can be directly exposed in the space after paving. This is more conducive to the moisture in the back leveling layer and adhesive being released from the paving joints, achieving rapid drying of the stone back leveling layer and adhesive.

After the leveling layer and bonding agent are cured and hardened, the joint and subsequent crystallization treatment are carried out. Nowadays, in the industry, marble adhesive and epoxy adhesive (A: B=2:1/1:1) are commonly used for joint treatment. Yunshi glue solidifies quickly and contains a large amount of filler, resulting in low glossiness and a high shrinkage rate of the joint. It is prone to shrinkage and cracking of the colloid in the later stage; Epoxy adhesive has a slow curing time, low filler content, and low shrinkage rate, making it prone to water line problems on both sides of the joint. After processing light-colored stone joints, there may be discoloration. There is now a glue small treasure 510 that does not leak oil or change color, which is widely used in the joint treatment of light-colored stones.

To achieve a good appearance, thickness is the foundation, protection is the key, and care is the ultimate beauty. The three factors contribute to each other’s success and prosperity.

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