Natural marble radioactive is small

Many people say, this is the marble radioactive a one-sided understanding, according to geological expert introduction, marble into natural marble and Artificial Marble, natural marble radioactive completely can be neglected.

Natural marble is actually marble, is by the sedimentary limestone by high temperature high pressure and other exterior factors metamorphic and become, mainly by calcite and white cloud particles in the air. DuoNian actual test results show that the calcite and dolomite radioactive are generally low, from radioactive very low limestone metamorphic a marble, its radioactivity also is very low, can be at ease completely use;

According to GB6566-2001 "building material radionuclide set limit to" national standards implementation for nine years on the stone of the measured data, natural marble radionuclide radium in 226, 232,, and the rate of-40 k of radioactive than activity is far lower than the standard (green, A kind of is not restricted) index, and can completely neglected.

Artificial marble is to use natural marble, and, sometimes, with the granite rock as inserts, with cement, gesso and not saturated polyester resin as adhesive, classics agitate shapes, grinding and polishing is made. This stone is rich in harmful gas. Artificial marble granite radioactive depends on how many of the packing and itself and cement plaster of radioactive radioactive, and harmful gas relies on adhesives containing in formaldehyde and benzene, how much of the volatile substance. Grey granite general problem not big, and put the red body sex general higher, artificial marble to join the cement, cement firing to join after a certain number of ash, and some inferior coal ash will have a higher radioactivity, at the same time, artificial marble of gypsum, processes is not good, you will have a higher radioactivity.

At present many stone dealer in the process of sale, often will artificial marble said to be natural marble, even confuse STH with STH else. Differentiate man-made and natural marble is simple: on drop a few drops of rare hydrochloric acid, natural marble is very severe and bubbly, the marble does not bubble even infirmly frothily.

For a long time many consumers of stone material classification, at the same time, because of lack of understanding of marble radioactive have misunderstandings, society common marble to human body harm consumers, radioactive in the choose and buy is must distinguish marble is natural marble or artificial marble.

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