There is a global shortage of sand, and there are so many in the Sahara Desert, why not?

There is a global shortage of sand, there are so many in the Sahara Desert, the real reason for not using it is not suitable for construction, the sand in the desert has not been fully baptized by rain, and the alkali content is very high, and the slight dampness will cause the chemical reaction of panalkali to form calcium carbonate, and the volume will expand, and the wall skin will be jacked up, and it will also corrode the steel bar, reducing the strength and causing damage to the house.

As the world continues to develop, we are facing a shortage of many resources, without which we may face many difficulties in life, and sand is indispensable for repairing houses. There is a global shortage of sand, and many people say that there is so much sand in the Sahara Desert, why not use it? It's not that we don't use the sand of the Sahara Desert but this kind of sand has no way to build a house at all, and the sand must be fully baptized by the rain before it will have a great effect on the building, if it is not baptized by the rain, the sand is easy to get damp, and the dry sand contains a high alkali, which will undergo a chemical reaction to form calcium carbonate, which will corrode the steel bar and cause great damage to the building.

1. The real reason why the sand of the Sahara Desert is not suitable for buildings is not used.

Sand is actually divided into many categories, the sand in the Sahara Desert belongs to dry sand, such sand has no moisture, resulting in a high content of alkali in it, as long as it is slightly damp, it will form a chemical reaction to form calcium carbonate, calcium carbonate is known to have strong corrosiveness, which will corrode the steel bar and reduce the hardness of the steel bar to bring potential safety hazards.

2. Can the sand in the Sahara Desert be put into the sea and then used?

I have just said that the sand in the Sahara Desert is not suitable for construction because of the lack of water, if the sand in the Sahara Desert is put into the sea for a long time, such sand can be used, but the cost is very high, and it is also very difficult, and it is very undesirable in terms of cost, which is why no country puts the sand of the Sahara Desert into the sea.

Many times we don't cherish what we have, when we really face a shortage we know its preciousness, resources must also come less, I hope you don't take the protection of the environment as just a slogan, otherwise we will be more and more painful with fewer and fewer resources.

Most of the sand that can be used for construction is naturally formed sand in rivers, and the sand in the Sahara Desert is too fine, and the sand in the Sahara Desert is too alkaline, which is very dangerous if used in construction.

Because the sand in the Sahara Desert is different from the sand used in construction, the sand in the desert is not treated and is easy to corrode the steel bars with moisture, so even if there is more sand in the desert, it cannot be used.

Because the cost of transportation is too high. Although there is a lot of sand in the Sahara Desert, if you want to take sand from the Sahara and ship it to other parts of the world, the cost is not proportional to the return, so no one will use it.

The sand of the Sahara Desert is not the same as the sand we need, and because the sand of the Sahara Desert has changed differently from the sun, it is dangerous to use it in the construction of people's daily lives.

What is in short supply now is river sand, and the sand in the desert is not the same as the river sand, and it cannot be used for construction, so no amount of sand in the desert is useless.

The sand in the desert has no economic value。Sand is a very common material in our daily life, for example, in the construction industry. When it comes to sand, many people first think of the desert, you must know that there is a lot of sand there, and it is deserted, why not just use the sand in the desert?

In fact, the sand in the desert has no economic value at all, because of its different nature, it cannot be used to build houses, and the transportation cost is too high, so no one wants to use it.

1. Unable to build a house.

The construction industry has a great demand for sand, they usually combine sand and concrete to build houses, but the problem is that the sand in the desert cannot be used in this way, this is because the sand in the desert is eroded by the wind, and the corners and corners have been polished to a rounded edge, if they are used to build houses, it may lead to the structural instability of the house, the load-bearing capacity is reduced, and it is easy to have accidents, which cannot meet the requirements of the construction industry at all. In addition, the alkali content of the sand in the desert is very high, and although it can remove the alkali in it, the cost is very high, so no one wants to do this at all.

Second, the transportation cost is too high.

The sand in the desert is not completely useless, for example, the sand pit on the sports field can directly use the sand in the desert, but the problem is that the desert is mostly concentrated in uninhabited places, those places are very far away from densely populated areas, and the transportation cost alone is already very high, so naturally no one wants to go there for transportation and use.

Third, the cost increases.

Although the sand can be used by us after secondary processing, such as making glasses, fish tanks, etc., the problem is that the transportation cost of sand in the desert is too high, which will lead to an increase in production costs. Therefore, although sand can be used, no one wants to do it, and naturally there is no economic value.

There is no economic value, because such sand is completely formed in a dry environment, and the alkali content in it is completely exceeded, so it does not meet the standards and requirements of construction at all.

The sand in the desert has no economic value, and its nature is different, it cannot be used to build houses, and the transportation cost is relatively high, so it has no use value.

The sand in the desert has economic value, and the sand is very valuable, and then it can also be used to build some buildings, which is very useful.

No matter how bad the sand in the desert is, it is also silica, which can be used to make chips.

There are also oases, there are trees, there are cacti, and there are some animals in the desert.

There are also water scientists who show that there is a very likely prehistoric giant lake under the Sahara Desert, and scientists have actually checked the sails and transported hail and found that there is a water source under the Sahara Desert.

There are also creatures, some animals that are drought tolerant, and they also live in this land.

There are rocks, salt marshes, oases, and some water sources under the desert, the Sahara Desert is very barren and it is difficult for ordinary people to survive here.

The weathering and fragmentation of rocks with a number of skins close to the high mountains is the main reason for the large amount of sand produced.

The granite on the earth's surface is also easily weathered to produce sand. If the surface of an area is mainly composed of sandstone, etc., and the surface of the land is arid, then the rocks will gradually break down under the long-term physical weathering of the rocks, producing a large amount of sand.

There is so much sand in the Sahara Desert, why is the price of urban construction sand rising so high!

Although there is a lot of sand in the Sahara Desert, it is not suitable for urban construction. Because the sand in the Sahara Desert is large, it is not easy to fix, and it contains more salt and alkaline substances, which can easily lead to water seepage, rust, corrosion and other problems on the walls of the building, which has an impact on the durability and safety of the building. Therefore, urban construction usually uses fine sand such as river sand and sea sand that has been screened and processed, which has small particles, fine texture, good adhesion, no salt and no alkali, and is more suitable for the production of building materials and urban construction.

In addition, urban construction requires a large number of building materials, and the quality of these materials is affected by a variety of factors, such as the scarcity of raw materials, transportation costs, market demand, etc. Therefore, the construction of urban sand is not only due to the scarcity of sand, but also affected by a combination of factors.

It is because of the long-term action of the wind that causes the land to desertify.

Deserts are not naturally formed, but man-made.

For example, in the United States from 1908 to 1938, due to the deforestation of more than 900 million acres, large areas of grassland were destroyed, and as a result, large areas of green space were turned into deserts.

The Soviet Union's 1954-1963 reclamation campaign severely damaged the steppes of Central Asia, bringing desert disasters instead of arable land.

The Sahara Desert has caused great harm to mankind, engulfing farmland, villages, railways, roads and other transportation facilities.

According to historical records, the ancient city of Loulan on the Silk Road in China was swallowed by the desert. At present, mankind is doing everything possible to prevent and control desertification, such as planting trees, planting grass and fixing sand, and setting up sand barriers, all of which have achieved very good results.

Famous ones are the Libyan Desert, the Raibyanai Desert, the Obari Desert, the Eastern Desert and the Western Great Desert of Algeria, the Shesh Desert, the Juf Desert, the Avana Desert, the Bilma Desert, etc.

The larger area is called the "sand sea", and the sand sea is composed of complex and regular sand dunes of various sizes, with tall fixed dunes, low mobile dunes, and large areas of fixed cherry high and semi-fixed dunes.

Fixed sand dunes are mainly found in the southerly near the grassland and along the Atlantic coast. The western part of Algeria from Libby Ridge to the west is the Quicksand Zone. Shifting sand dunes are constantly moving downwind. In the Sahara Desert, a record of 9 metres of movement of mobile dunes has been observed.