How to choose the thickness of the stone? (1)

What is the impact of stone thickness on stone products

1. The thinner the board, the weaker its compressive strength

The strength of a rock refers to its ability to resist failure. Under external forces, rock failure occurs when the stress reaches a certain limit value, which is the strength of the rock. When the thickness of the board is thinner, that is to say, the compressive strength of the board is weaker, and the board is more prone to damage; On the contrary, the thicker the board, the greater its compressive strength, and the less likely it is to break and damage. Under external loads, rock failure occurs when the internal stress of the rock reaches or exceeds a certain limit. Therefore, from this formula, it can be concluded that the compressive strength of the stone is directly related to the thickness of the board: the board is thin, has poor compressive strength, and is prone to damage. The board is thick, with strong compressive strength, and is not easily damaged

2. The drawbacks of thin stone thickness

It has become a trend and trend for stone merchants to sell thinner and thinner boards. In most large board markets, it is common to see boards below 16mm, especially stone merchants with good materials and expensive prices who are more willing to make the thickness of the boards thinner. Because the stone is made too thick, the price of the large board has increased, and customers feel that the high price has affected sales when purchasing. Reducing the thickness of the large board can solve this contradiction, and both parties are willing to do so.

① Fragile cracking

Natural stones, especially many natural marbles, are full of cracks, and 20mm thick boards are easily broken and damaged, let alone boards that are far less than 20mm thick. Therefore, the most obvious negative consequence of insufficient board thickness is that the board is prone to cracking and damage.

② The color of adhesives such as cement will reverse osmosis

The stone is thin, and during construction, cement and other adhesives will seep back through the cracks on the stone surface and through the pores on the stone itself.

This phenomenon is most obvious for white stones, jade-like stones, and other light-colored stones. When the color of adhesive materials such as cement seeps back into the surface of the stone, it will greatly affect the surface effect. Make the originally beautiful stone extremely ugly. Traces of cement color can be seen on the surface of the stone because cement seeps back to the surface of the stone through cracks on the surface. If the stone is thick, cement cannot seep back to the surface of the stone

③ Poor bearing capacity

The thickness of granite used in many outdoor plaza projects is 100mm. The reason why such thick granite is used is that there are many people on the square and heavy vehicles have to pass by. With such a thick stone, its bearing capacity is large and it will not be damaged under heavy pressure.

④ Weak impact resistance

There is an idiom in China that says, ‘You can’t withstand a single blow.’. Describing weak strength that cannot withstand a single blow. “Thick” and “thin” are words with opposite meanings, but they have different meanings for stone panels: thick panels have strong impact resistance; On the contrary, thin sheets have weak impact resistance

⑤ Easy to deform and warp

For many years, consumers who have used artificial granite have reported that granite deformation and warping are more severe, especially for large-sized, long, and narrow granite products. Analyzing reasons, in addition to the quality issues of the artificial granite products themselves, there is also a very important reason that the thickness of the artificial granite board is not enough.

Almost all manufacturers of artificial granite slabs aim to reduce the price of large slabs and have higher competitiveness in the market, with a thickness of 16.5mm. The bending strength of a 16.5mm thick plate is lower than that of a 20mm thick plate. A family of domestic granite production enterprises has explicitly stipulated to sales personnel that the thickness of the artificial granite floorboard orders must be 20mm. When customers insist on using a 16.5mm thick board as the ground, sales personnel can refuse this project. Instead of dealing with various problems caused by the thin thickness of artificial granite afterward, it is better to propose a stone thickness standard in advance to avoid quality problems such as deformation and warping of the stone after construction.

⑥ Poor dimensional stability

Dimensional stability refers to the performance of a material under mechanical force, heat, or other external conditions, with no change in its overall dimensions.

Dimensional stability is an important technical indicator for measuring the quality of stone products. There is a relationship between dimensional stability and the thickness of stone: when the thickness of the board is thick, the dimensional stability is relatively good; Thin board with poor dimensional stability

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