Analysis of Natural Stone-Dongshi
Release time:
2024-04-18
There is a special kind of natural stone stone-stone. Their surface is full of holes, but has a very good decorative effect. The stone has been used by humans for a long time, and the building that best represents Roman culture-the Colosseum is a masterpiece of cave stone. Today we will summarize and analyze this stone variety.
There is a special kind of natural stone stone-stone. Their surface is full of holes, but has a very good decorative effect. Human use of the stone for a long time, the most representativeRomeThe building of culture-the gladiator is a masterpiece of Dongshihara. Today we will summarize and analyze this stone variety.
The cave stone is named because there are many holes on the surface of the stone. Its scientific name is travertine, and its English name is Travertine. Commercially, it is classified as marble. Why not call it marble, because its texture and appearance is very different from the traditional sense of marble, decorative circles simply on the convention. The main cave stone is gray, rice white, beige, yellow, golden yellow, gray, brown, coffee, light red, maroon and other colors. Most of them are beige, and a few are green, but the ore layer is too thin and not mined. The main producing areas are Italy, Turkey, Iran, China's Henan also has a hole stone discovery and output.
Its formation is generally believed to be a calcareous material precipitated from carbonate-bearing springs (usually hot springs) under atmospheric conditions. The specific formation is that the circulating groundwater containing ground carbon oxide takes away a large amount of calcium carbonate in the plant solution. When the groundwater reaches the surface of the spring, some carbon dioxide is released and condensed in the sedimentary layer of calcium carbonate, forming rare bubbles (holes), thus having cave stones. Different from the limestone precipitation in the ocean, most of the limestone is deposited rapidly in rivers, lakes and ponds. This rapid deposition can not release organic matter and gas, resulting in beautiful texture, but the disadvantage is that it can also produce the stratification of internal cracks, which weakens the strength in the direction consistent with the texture. Because of the holes, the unit density of the condensate is not large, which is suitable for the covering material, but not the structural material and basic material of the building. In the past, people used a large number of cave stones as basic materials and structural materials for buildings, but with concrete, it is no longer used.
Characteristics of the cave stone
1. The lithology of the cave stone is uniform, the texture is soft and hard, it is very easy to mine and process, the specific gravity (density) is light, easy to transport, and it is a kind of building stone with wide use.
2. The cave stone has good processability, sound insulation and heat insulation, and can be used in deep processing. It is an excellent building decoration material.
3. The texture of the cave stone is fine, the processing adaptability is high, the hardness is small, easy to carve, suitable for use as carving material and special-shaped material.
4. The color of the cave stone is rich, unique in arts and science, and has a special hole structure, which has good decorative performance. At the same time, due to the natural hole characteristics and beautiful texture of the cave stone, it is also a good material for garden stone such as bonsai and rockery.
Key words:
More recommend
