The pinyin of gravel is shā lì, which means pebbles and gravel formed by water erosion in rivers, beaches and other areas. Gravel is generally 2-64 mm in diameter, with smooth and round surface and hard texture. Gravel is widely distributed and is one of the important components of deserts, beaches, rivers and lakes. Gravel is also widely used in building engineering and landscaping.

Gravel is a common natural substance, and its application range is extremely wide.

Building engineering-Gravel is one of the indispensable raw materials in building engineering, which is mainly used to prepare concrete and asphalt mixture. Gravel can improve the strength and stability of these materials, at the same time, it can also increase their cement properties, making them more suitable for the needs of construction projects.

Landscaping-In landscaping, gravel is mainly used for plant cultivation and garden paving. Gravel can provide the air permeability and drainage capacity needed by plants, and at the same time beautify the landscape and increase the beauty of the garden.

Filter material-sand is also a common filter material because of its large particles and good filtration performance. Gravel can be used for water treatment, air purification, waste gas treatment, etc. , play a role in filtering and cleaning.

Artificial beaches and outdoor leisure places-Gravel is an indispensable material in artificial beaches and outdoor leisure places. Gravel can be used to pave beaches and venues, bringing people a more realistic and natural visual experience and improving the fun of outdoor recreation.

In a word, gravel has a wide range of application values and functions. It is not only an important material for building engineering and landscaping, but also an important part of water treatment and filtration materials.