Hesha is a non-metallic ore with many complex components, a smooth surface, and a large amount of impurities. Natural sand is a natural stone that has been repeatedly collided and rubbed by the force of water for a long time. Hesha granules are sleek, relatively clean, and have a wide source; river sand has no taste, and sea sand has a salty taste.
Hesha has made outstanding contributions to the construction industry. However, in contrast to sea sand, sea sand is often mixed with shells and salt. Most of the sea sand contains excessive amounts of chloride ions, which can corrode steel bars in reinforced concrete, eventually leading to the destruction of building structures, and to a certain extent, shortening the safe use of buildings. life.
River sand species:
River sand is divided into: building sand, drying river sand, natural river sand, river sand 4-8 mesh, river sand 8-16 mesh, river sand 10-20 mesh, river sand 20-40 mesh, river sand 40- 70 mesh, river sand 50-100 mesh.
River sand use:
After screening the river sand, it can be used as the main raw material for external wall thermal insulation mortar. For example, the adhesive mortar mortar is the main raw material of washed river sand. The strength is similar to mortar made of quartz sand.
Granular loose material that acts as a skeleton or filler in concrete.
The difference between river sand and sea sand:
Sand from the source of sand can be divided into sea sand, river sand and mountain sand.
In the building decoration, the use of sea sand is strictly prohibited in the country. Although Haisha is clean, the State strictly prohibits the use of sea sand that has not been desalinated as a building material. Because of the high salinity of sea sand, it is easy to cause chloride ion corrosion in construction projects, causing potential safety hazards. To distinguish whether it is sea sand or not, it is mainly to see if the sea contains tiny shells. Because of the rough surface of the sand, the cement has a good adhesion effect, but the components of the mountain sand are complex, and most of them contain mud and other organic impurities. Therefore, river sand is recommended for general decoration projects. The surface roughness of river sand is moderate, and it is relatively clean and contains less impurities. Generally purchased from the market, Saud had to be screened before being used.
The only difference in appearance between sea sand and river sand is: the color of the river sand is relatively bright, the sea sand is dull and dark brown, and the size of the river sand particles is coarse, and the sea sand is very fine, and some are even like powder ( Never use it. This can be known by rubbing it directly with your hand. Jiangsha is divided into coarse sand, medium sand, and fine sand. Nowadays, few sandstones are used for interior decoration, and most of them are medium sand. The gravel content of large particles in a good river sand is small, but this is hard to see now. The surface roughness of river sand is moderate, and it is relatively clean and contains less impurities.
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