Gravel is a kind of natural granular material with a particle size of 2 ~ 60 mm and no edges and corners, which is made of weathered rocks transported by water for a long time. It is a name in sediment classification, and its average particle size is greater than1mm.
According to the average particle size, gravel can be subdivided into three types: boulder, coarse gravel and fine gravel. The average particle size of 1- 10 mm is called fine gravel, and the one larger than 100 mm is called boulder. Gravel is called conglomerate or breccia after cementing into rock.
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Gravel is one of the most commonly used garden stones, which can be laid on the ground or used as a cover. If you want to build a low-cost garden, gravel is the best choice. It is an economical and hard landscape material, which is suitable for laying outdoor leisure areas, filling gaps in roads or forming drainage channels.
Gravel is rich in color and varies in size. Reasonable and ingenious collocation can make the garden have an extraordinary appearance, mainly with high-grade gray tones, which is very in line with the characteristics of contemporary young people. Gravel is a good pavement material with efficient drainage function. People walk on it, and the crisp crunching sound under their feet is the most beautiful sound in the garden, which is refreshing.
Some crushed stones are easy to crush, but the installation method and types of crushed stones have great influence on the degree of rolling. In order to reduce rolling, it is recommended to use fine gravel, such as rotten granite or heavy and large gravel, and fix it in a suitable position.
Gravel can fill the gap between other paving materials such as slate, which is easier to maintain than the path formed by other materials. Of course, in the process of use, the selected gravel and color should be coordinated with the paving materials.
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