The stone industry is stepping into a strange circle: the thickness of the large plate is getting thinner and thinner, from 20mm in the 1990s to 15mm now, or even thinner and thinner to 12mm. Many people think that the thickness of the plate does not affect the product quality of the stone. Therefore, the plate thickness is not taken seriously. In today’s large plate market, the thickness of a large plate is mostly about 16mm, and the base is even thinner. Does the thickness of the large plate have no impact on the quality of stone products? Let’s talk about this in this article.
● The thinner the plate, the weaker the compressive capacity
The strength of rock refers to the ability of the rock to resist damage.
Under the action of external force, rock failure occurs when the stress reaches a certain limit value, which is the strength of rock.
When the thickness of the plate is thinner, that is to say, the compressive capacity of the plate is weaker, and the plate is easier to be damaged; Conversely, the thicker the plate, the greater the compressive capacity, the plate is less likely to break and damage. Under the action of external force, when the stress in the rock reaches or exceeds a certain limit, the rock will be destroyed. From this, we can conclude that the plate is thin, the compressive capacity is poor, easy to damage, the plate is thick, the compressive capacity is strong, and the plate is not easy to damage.
● Disadvantages caused by thin stone thickness
It has become a trend for stone merchants to sell thinner and thinner plates. In most large plate markets, it can be seen that large plates less than 16mm, especially stone merchants with good material and expensive prices are more willing to thin the thickness of large plates. Because the stone is too thick, the price of the large plate rises, and the customer thinks the price is high when buying, which affects the sales.
1. Fragile
Natural stone, especially many natural marbles, is full of cracks. 20mm thick plates are easy to break and damage, not to mention plates far less than 20mm thick. Therefore, the most obvious adverse effect of insufficient plate thickness is that the plate is easy to break and damage.
2. The color of adhesives such as cement will reverse osmosis
When the stone is thin, cement and other adhesives will penetrate through the cracks of the stone and back through the pores on the surface of the stone. This phenomenon is most obvious for white stones, stones with a sense of jade quality, and other light-colored stones. When the color of cement and other adhesive materials seeps back to the stone surface, it will greatly affect the surface effect. Make the original beautiful stone extremely ugly.
3. Poor bearing capacity
The thickness of granite used in many large square projects is 30mm or even thicker. The reason for using such thick granite is that considering that there are many people in the square and heavy vehicles have to pass through, such thick stone has a large bearing capacity and will not be damaged under heavy pressure.
4. Easy to deform and warp
Over the years, consumers who have used artificial granite have reported the deformation and warpage of granite, especially the deformation and warpage of granite products with large specification, long length, and narrow width. In addition to the quality problems of artificial granite products, a very important reason is that the thickness of artificial granite plates is not enough. To reduce the price of large plates, almost all manufacturers of artificial granite plates have higher competitiveness in the market. The thickness of large plates is 16.5mm.
● Construction sites should pay special attention to the thickness of the stone
1. Exterior wall products and interior products should be treated differently
In the 1990s, the thickness of granite and marble plates for stone exterior walls was no less than 30mm. With the advancement of the times, the thickness of granite stone products for the stone exterior wall has become 25mm, and even the thickness of marble in some projects has become 25mm. From the mechanical point of view, the thinning of the thickness of exterior wall products means that the wind load resistance, impact resistance, and bending resistance are declining, and it also means that the buildings decorated with stone are full of various safety risks.
2. The thickness of granite and marble products shall be distinguished
From the physical and chemical properties of rock, the strength, surface compactness, water absorption, and other physical and chemical indexes of marble lag behind granite. Therefore, whether it is exterior wall stone or interior stone, the thickness of marble products is thicker than that of granite products, which is more safe and reliable. Stone suppliers and dealers must not pursue their interests and decorate buildings with too-thin stones.
3. The installation methods and thickness of table panel products shall be different
Due to the different materials of natural stone, its physical and chemical performance indexes are also different. The nature of natural marble is completely different from that of natural granite. Different kinds of natural marble have their advantages. It is OK to use 20mm thick stone for decoration in this place. When using another kind of stone for decoration, 20mm thick stone may not be appropriate. It needs to be adjusted appropriately according to the characteristics of the stone used to ensure that its strength meets the requirements for safe use.
4. The thickness shall be different for different application sites
The thickness of the stone should be changed according to the different application sites. For example, the thickness of stone used on the ground of large public squares, such as Beijing Gate Square, railway station, and stadium square, is greater than that of hotels, shopping malls, and office buildings. Because not only a large number of people pass through these places every day, but also many cars and vehicles with heavy devices pass through, exerting great pressure on the ground. If the stones used in these places are too thin, they will be crushed in a short time.
Compared with the ground, the wall panel of interior decoration can be slightly thinner than the floor panel, because the wall panel is installed on the wall and has little chance of being impacted by external forces, while the floor panel has to bear the heavy pressure of furniture and other heavy objects, which is greater than the wall panel; The thickness of stair treads in the floor slab should be higher than that of the floor slab. Because the stair treads are mostly slender strips, they are easy to break and damage under pressure.
As a decorative material, stone has its properties, such as hardness and bending resistance. Its properties cannot be damaged due to interests. For example, the thickness of this stone must not be trusted. We must strictly require a reasonable thickness, otherwise, we will regret it. Well, this article will be written here first. Welcome to email to share sales@sntstone.com.
