“Alkali Returning” Problem On Royal Batticino Crack And Its Prevention

Royal Batticino is a kind of precious marble produced in Iran. Speaking of this variety, in addition to its elegant and gorgeous color, I’m afraid the most remarkable feature is its unique bright cracks. This crack adds an oil painting-like texture to Shanna’s beige, which makes it more polished.

But these cracks also bring some problems. During the use of some Royal Batticino, these gaps will turn white, which is very like alkali recovery. So what is the reason for this phenomenon? Let’s analyze this article.

Source of crack

Royal Batticino is produced in Iran. This area was still a marine environment in the remote paleogeological era. Therefore, like many stone varieties in this area, Royal Batticino yellow is a typical sedimentary metamorphic rock. That is, the limestone on the seabed was deposited under the action of gravity and seawater pressure, and formed today’s Marble form after hundreds of millions of years of metamorphism.

The metamorphic rock mass of Royal Batticino is very sufficient, which makes the material of Royal Batticino very superior. Its compactness and hardness are very high, and its water absorption is low. Therefore, as a decorative stone, it has a wide range of applications and is easy to shine. It is a very excellent variety.

But what about these cracks?

These cracks are the result of mechanical action. That is, in the process of beige diagenesis, the rock mass is squeezed by external forces (such as gravity and geological movement), resulting in fragmentation of the rock mass.

These cracks are actually the fracture lines of the rock mass. They are transparent but discontinuous, so when they are mined and sawed into plates, these cracks appear. This external force is a natural movement, so the crack caused is uncontrollable. Therefore, the cracks causing beige also have the following forms:

1. Regular texture

The cracks are generally regular and arranged in the same direction. The grade of this kind of Shanna is very high. It is made into the decoration, and the overall effect is very excellent.

2. Random pattern

The cracks are arranged disorderly.

3. Cotton wadding

4. Mixed pattern

That is, all kinds of cracks appear together.

● Crack and alkali recovery

After understanding the causes of the formation of Shanna beige, many problems focused on the gaps of Shanna Beige will be solved. So, what are the reasons for the alkali recovery on the beige crack of Shanna?

1. Alkali recovery caused by wet sticking

If the wet paste is used for paving, the alkaline substances in the cement behind the stone will precipitate along these cracks under the action of water and reach the stone surface. After the water evaporates and the alkaline substances condense, they will gather at the cracks to form a back alkali phenomenon.

2. Dry hanging on the wall will also return to alkali

Even if it is dry hanging, there may be back alkali in the gap of beige. There are two reasons:

① Reason 1: sea breeze with salt

In coastal areas, the sea breeze is humid and salty. Dry beige is exposed to this salty sea breeze for a long time. The temperature and humidity before and after the plate vary greatly, and the salty water and gas will form a channel for water in and out along these cracks. After the water evaporates, the salt will condense into the crack and form salt spots, which is very similar to the phenomenon of alkali return.

② Reason 2: the stone itself contains salt

As mentioned earlier, Iran was still a marine environment in the paleogeological era. This makes some of the mined stones contain sea salt.

If these stones are installed in areas with high humidity, such as the south. The salt contained in the stone itself will gradually gather in the cracks in the cycle of stone water absorption and drying. Form “salt spots” similar to alkali returning.

Although the material density of beige is high, it is not easy to produce these alkali and salt spots. However, these cracks on beige just provide a convenient channel for moisture to enter and leave the stone. Water carries alkaline substances and salts, which will specifically pass through these cracks. Therefore, whether it is alkali or salt spots, they will appear concentrated on these cracks.

3. Aging phenomenon

When natural stones are mined, cut, processed, and put into use after installation, they will slowly age after long-term contact with air and other substances, and the color will become different from that when they were first installed. beige is no exception. The aging process will aggravate the color difference between the crack of Shanna beige and other places. Many people find that after years of use, the crack is becoming more and more obvious and looks like alkali.

4. Extrusion causes

In addition, there is another reason that is the most hidden. The problem it causes is not alkali recovery, but it is very similar to alkali recovery.

As mentioned earlier, the crack of beige is formed under the action of external force. If the plates are spliced tightly without any expansion space during installation, the strong stress generated during thermal expansion and cold contraction of the stone is enough to squeeze the crack of Shanna Beige wider and more seriously. The wider the crack, the heavier the white, which is visually like serious alkali recovery.

● How to prevent it?

Knowing the reason, we can prevent it in advance. Because whether it is alkali or salt spots, the difficulty of cleaning is not high. The key is prevention. Except that expansion joints shall be reserved during installation and protection shall be done; The Saana Beige on the ground can fill the crack by crystallization or glaze sealing to block the water and gas from entering and leaving the crack, so as to prevent alkali return and salt spots.

The Saana Beige on the wall can be wiped with a VD stone brightening care agent, a material containing a high concentration of silicone, which can not only improve the decorative effect, but also make the silicone penetrate into the cracks of Saana beige, and also block the entry and exit of water. Thus, the problems of alkali return and salt spots can be prevented.

The material of Shanna beige is very noble and the material is also very good. Only when we know its characteristics can we make better and greater use of it, so as to reflect its nobility. Well, this article is written here. Welcome to share more. I look forward to your email at sales@sntstone.com.

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