Home inspection of Marble

Home inspection of Marble:

Common Test One: on the back of the stone drop a drop of ink, such as ink quickly scattered around the leaching, that is, the stone inside the particle is loose, poor quality; but if the ink droplets do not occur infiltration, it shows that the stone density, good quality. This is actually a simple test of water absorption of stone, if the ink droplets do not penetrate may indicate that the texture of the stone is relatively dense, low water absorption rate. Marble usually brushing a layer of protective agents to prevent the infiltration of stains. Even if the customer sees the ink drop is likely to be protective agent at work, but not the performance of the stone itself. In addition, if the water on the back of the stone drops into a droplet shape, it has been brushing over the protective agent, it is difficult to absorb water, but also may cause it and cement can not fit, so you can think of marble positive water absorption rate of the smaller the better, but should also consider its back can be with cement type adhesive very good adhesion.
Common Test two: vinegar and marble reaction to produce calcium acetate, so the vinegar drops on the marble will lead to changes in the surface of the stone, become coarse, which can be seen is not a real marble.
This test in principle is to make sense, but because acetic acid itself is weak, so the test needs a longer reaction time, consumers can not see the results, with hydrochloric effect is more obvious.
Common Test Three: percussion marble, and pay attention to listen to the sound, if the sound is crisp, the product quality is very good, the internal meticulous even without cracks; if the sound is gruff, it proves that there is a crack inside the marble and loose texture. This test can only show that the texture of the stone is relatively hard, brittle and high strength, and can not be used as a judge of the quality of stone, because the sound of stone and its own variety, size has a certain relationship, this strength is higher than the marble is more suitable for the ground.