What are the advantages of river sand?Is it better to have river sand or machine made sand

River sand: or plain sand, is the sand left behind after the alluvium of the riverbed. It has good drainage and air permeability, and can be used in combination with other more clay soils, which can improve the drainage and aeration of the soil, and is clean and hygienic. The disadvantage is that it has no fertility and can be used as a preparation and culture soil.

can also be used alone as a substrate for cuttings or seeding. When sea sand is used as culture soil, it must be washed with fresh water, otherwise the salt content is too high, which will affect the growth of flowers.

River sand is formed by natural stone through long-term collision and friction of water, the surface is relatively smooth, the color is white and yellowish, and it is a non-metallic ore with more impurities content.

The composition of river sand is more complex, generally speaking, the main component is quartz, which contains elements such as silica.

Advantages First, the particles of river sand are smooth and relatively clean;

Second, the river sand is very wide, easy to obtain materials, and low cost

The third is that river sand has no taste, while sea sand has a salt smell;

Fourth, the river sand has good water permeability and air permeability.

Disadvantages: First, there are no nutrients in river sand;

Second, the river sand particles are large, easy to leak fertilizer and water, and the fertilizer and water retention are poor

Third, the river sand is easy to leak, and sometimes in order to retain water for the plants, they have to be watered frequently, resulting in rotten roots of the plants.

River sand is an insoluble mineral that contains very few nutrients needed for plant growth. Generally speaking, the cultivation of plants using river sand is not for its nutrients, but as vermiculite, as in the case of vermiculite, as the support of the root system of the plant in soilless culture. In soilless culture, a nutrient solution is applied to supplement the nutrients needed for plant growth.

When cultivating malt, it can be cultivated with sterilized river sand, which can also be used as a mixed substrate for the cultivation of succulents.

1. Distinguish sea sand from river sand in appearance. In terms of exterior color, the sea sand is darker in color, dark brown, and some are lighter in color. The color of the river sand is much brighter than yellow.

In terms of particle thickness, the particles of river sand are relatively coarse, the surface roughness is moderate, and the impurities are relatively few. The sea sand is very fine, and some of it is powdery, which is absolutely unusable. Judging from the fragments of particles, sea sand generally has fragments such as shells, and river sand has pebbles of various sizes.

2. Compare sea sand and river sand in terms of specifications. The river sand used in the construction has certain specifications. In the process of river sand screening, it is generally divided into 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, etc., which refers to the number of particles within an inch of circle, and sea sand has not yet been classified into such fine and clear rules.

3. Distinguish between sea sand and river sand from the feel. Grab a handful of sand and hold it firmly in your hand and then pat it off, and find that it is the sea sand that is not clean with sticky hands, and it has a sticky feel. If it's not sticky, it's river sand.

4. The difference in taste between sea sand and river sand. It's the easiest and dumbest way to do it. When you taste it, you will find that what is not salty is river sand, and what is salty is sea sand.

There is also a lot of sea sand that has been desalinated, we can soak the sand in the water for a while and taste the taste of the water, and the salty is the sea sand.

5. The difference in composition between sea sand and river sand. The main component of sea sand is silica, the crystalline phase is mainly quartz, feldspar and cuttings are relatively less, the content of mica flakes is less, and the roundness is also very good. The content of silica in river sand is lower, and there are more metal ions such as calcium and aluminum, and the content of mica flakes will be more.

However, this is only an overall average, and sometimes there are exceptions, and it is difficult to have specific quantitative indicators.

Hello <> machine-made sand is good 1, resource advantagesThe harm of natural sand mining to the environment is self-evident, and it is a non-renewable development model in the long run. On the other hand, driven by environmental protection policies, the market for natural sand has gradually shrunk, which has undoubtedly had an impact on the sand and gravel market. Natural sand can be based on various waste resources, in line with the scientific concept of development and conservation, circular economy management advantages, and has a long-term responsible person, has a fixed business site.

2. Quality advantage: The quality of natural sand is easy to be unstable, resulting in a waste of resources. In the state of more fixed material source, the mechanized production method of machine-made sand also ensures that the quality of the product is stable, adjustable and controllable. 3. Quality advantage: Machine-made sand has high surface energy and hydrophilicity, complete gradation, micro gradation of less than 75m, and a variety of mineral components to choose from.

Particle stability can be adjusted, and particle shape can also be improved. Pro-<>

River sand is divided into: 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 70-100 mesh.

River sand use: river sand can be widely used in various dry mortars after drying and screening; For example, thermal insulation mortar, adhesive mortar and plastering mortar are washed, dried, and graded river sand as the main aggregate. The strength is similar to that of mortar made of quartz sand.

Therefore, river sand generally plays an irreplaceable role in construction and decoration.

Introduction to river sandRiver sand is formed by natural stones through the action of water and long-term collision and friction. It has a smooth surface and the loose potato color is white and yellow. It is a non-metallic mineral with a high content of impurities.

River sand composition. The composition of river sand is complex. Generally speaking, the main ingredient is the season, which contains silica and other elements.

Characteristics of river sand. Merit.

First, the grains of river sand are smooth and clean; Second, the river sand is wide, easy to obtain materials, and low cost; Thirdly, river sand has no taste, and sea sand has a salt taste; Fourth, river sand has good water permeability and air permeability.

Shortcoming. First, river sand has no nutrients; Second, the river sand particles are large, easy to leak fertilizer and water, and poor fertilizer and water retention; Thirdly, river sand is prone to leakage, and sometimes plants have to be watered frequently in order to retain water, resulting in root rot.

River sand suitable plants.

River sand is an insoluble mineral that contains almost no nutrients for plant growth. In general, plants are cultivated with river sand, not to use its nutrients, but to use vermiculite as a support for plant roots in soilless culture. Soilless cultivators should apply nutrient solution to supplement the nutrients needed for plant growth.

When cultivating malt, succulents can be cultivated with sterilized river sand or as a mixed substrate.

Summary. River sand is a natural stone in the natural state, by the force of water for a long time repeated collision, friction generated, its composition is more complex, the surface has a certain smoothness, the content of impurities is more non-metallic ore. The river sand particles are smooth, relatively clean, and wide; River sand has no taste, and sea sand has a salty taste.

River sand is a natural stone in the natural state, by the force of water for a long time repeated collision, friction generated, its composition is more complex, the surface has a certain smoothness, the content of impurities is more non-metallic ore. The river sand particles are smooth, relatively clean, and wide; River sand has no taste, and sea sand has a salty taste.

Which of the above two kinds of sand is.

Judging from the ** above, it should be the river sand on the top.

Got it.