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I. Water-repellent test The stone curing agent has the characteristics of water-removing, and the quality of the water-removing effect depends on whether the water droplets on the surface of the stone treated with the curing treatment will be round or diffuse. When the corner is larger, the water surface of the stone is better, and the water pearl is more difficult to penetrate into the pore of the stone. The moisture from the back of the stone is difficult to penetrate into the surface of the stone, thus preventing the occurrence of stone lesions. When we use the fingers to play with the water droplets to spread, we can observe the speed of the diffusion of water beads again. If the speed of re-aggregation is faster, it means that the water-removing agent of the stone curing agent is better.
Second, anti-fouling test A few drops of pollution on the surface of the stone, such as tea, coffee, salad oil, soy sauce, ink, etc., after standing for 8-12 hours, use toilet paper to wipe and clean with water. Observing the surface contamination, the better the quality of the curing agent, the more difficult it is to infiltrate the stone, so the pollution level is lower, or even no pollution at all.
Third, blue ink soak test The cement mortar on the back of the stone contains calcium hydroxide and other plasma substances, which are easily dissolved by a large amount of water and then penetrate into the interior of the stone to cause stone spots such as water spots, white hua, and rust yellow. Blue ink is an ionic substance with some properties similar to cement mortar, so it can simulate the occurrence of water spots. The following is a simple experiment to quickly test the function of the curing agent.
For the general procedure of the test, first place a 2 cm thick stone in a shallow water pan, and put a blue ink solution (20% blue ink mixed with water) to drown 0.3 cm from the bottom of the slate, and often add blue ink. The aqueous solution was maintained at a fixed height, and after standing for 15 days, the blue ink was observed to penetrate into the surface of the stone. A good quality curing agent, blue ink is difficult to penetrate into the surface of the stone, thereby judging whether the curing function of the curing agent is good or not.
Determine whether stone curing agent is suitable
When the stone is cured, if the quality of the selected curing agent is not good, and the maintenance function of the stone cannot be exerted after use, the stone has a lesion, and the subsequent treatment must first remove the failed curing agent, and the cost is even more expensive. Nowadays, there are many brands of stone curing agents on the market, and the quality is not good. How to choose a good curing agent to make the stone have excellent curing effect is very important. Therefore, some simple introductions to the application of curing agents are made.