Why don t we build houses with the sand of the desert?

Because this sand is not very sticky, it is not firm to build a house with this sand and it is easy to collapse.

After all, the desert is too far away from the city, and the transportation cost is too high, so it is not worth it at all, and it is a waste of resources.

The sand in the desert is formed in an environment where there is a lack of water, and the alkali content is too high, which is also the most obvious disadvantage. At present, the alkali content of the sand is emphasized in the construction sand. Once the sand in the desert is used in the construction of a house, the sand with a high alkali content will chemically change with the concrete and its water, resulting in a lack of compressive strength in the final mixed mortar.

If the compressive strength of the mixed mortar is not enough, it will immediately lead to cracking of the wall, which can cause obvious adverse effects. Now that our living conditions have improved, this can be reflected in many ways.

Most emblematically, we can now not only eat and clothe well, but also eat well and eat healthier. The living conditions range from the thatched houses of the past, to the walls of stone, to the walls of the later tulou, and then to the high-rise buildings made of cement and brick. It can be said that the development is very fast.

It's all because our technology has improved. Sand and gravel is the most important raw material in the domestic construction industry, which should leave a deep impression on the industry. It's like a rocket.

No wonder some people laugh: "Ordinary sand and gravel almost catch up with the value of rare earths", "Our family relies on this small piece of sand to make our family live a rich life".

Most of the sand in the desert is made up of material from the in-situ regolith layer, which is not filtered by a harmful substance, and contains more harmful components. Comparatively speaking, river sand is deposited by flowing water that is transported from afar. Through long-term cleaning and wear, most of the harmful substances contained in it will be cleaned up.

These substances have been possessed by nature since the day they were born, but we don't know their specific functions, or we don't make rational use of them. As science and technology evolve, we are learning how to get the most out of these materials. At present, China has basically achieved a moderately prosperous situation in all respects.

Everyone has abandoned their old living conditions, and now the living conditions are much better than before. More and more people are living in high-rise buildings. Then, we also know what constitutes a tall building.

Today's high-rise buildings incorporate new construction techniques and are more durable. Let's play with words first. Did you notice the details?

All the "sand" used in the construction is different from what is mentioned in the desert. The Chinese interpretation is, sand: larger particles, sand:

Smaller stone particles.

The reason for this is the high alkali content of the sand in the desert. Generally, the sand we use to build houses is river sand. The sand in the river is not the same as the sand in the desert, it is not the same in essence, the sand in the river is washed by water, while the sand in the desert is washed by the wind.

The sand in the river and the cement can increase the viscosity and increase the stability of the house, while the sand in the desert and the sand in the sea cannot increase the viscosity.

The sand in the desert is exposed to the wind and sun all year round, and the alkaline substances contained in it are relatively high. The sand used in construction is relatively pure. It's also for the sake of safety.

This is because the sand in the desert is generally easy to disperse. Even if you see the wind blowing, it will fall. So this sand has to be hard, tough, and sticky.

No, the particles are too fine

Desert sand cannot be used for construction because the sand in the desert is very alkaline, very dry, too fine, and has a lot of harmful substances. The quality of sand in the same area is high and low, and it needs to be sorted and transported, and the cost is too high to be cost-effective. In addition, the sand in the desert is too fine, and the lack of medium sand and coarse sand to adjust the gradation is not conducive to the improvement of concrete strength.

Judgment of the quality of sand used in construction

1. Purchase channels. You can try to choose a booth dedicated to the materials of large decoration companies to buy, although the purchase is less, the price may be slightly more expensive, but the quality is at least ***.

2. Put your hand into the bag and stretch out to grab a handful of sand, after opening your hand, if the sand is in a clump, it means that there is a lot of mud in the sand and the quality is poor. If the sand is scattered in small pieces, it means that the quality is good. The sand should be damp and not too dry.

If the sand is fine and dry, like soil, it should not be used either.

3. It can be distinguished from the color. Normal sand is yellowish in color, if the sand is very dark, then it means that there is a lot of dirt in it, and it is best not to use it.

No, sand does not have the conditions to build a house, and building materials such as bricks, stones, and cement are required to build a house.

We know that because of the climate, there are many deserts in the northwest of our country, and the most important thing in the desert is all kinds of sand. According to surveys, the desert surface area accounts for only 20% of the earth's land surface area, and if we can mine this sand and use it for construction, wouldn't it be able to alleviate the sand shortage? In fact, the idea is good, but the reality is bad.

Sand is further divided into three types: sea sand, river sand, and its dust. Sea sand, like river sand, is the sand formed by the erosion of flowing water, and the sand dust is the sand in the desert, mainly formed by wind erosion, so the sand used by everyone at present is from the river sand.

Although sea sand can also be used for construction, there are a lot of fluoride and pearl oyster fragments in the sea sand, and in order to mine sea sand, special large-scale machinery and equipment are required, and secondary processing of the sand after mining is required, which makes mining the most expensive. In addition, the fluoride in the sea sand will corrode the concrete and reduce the service life of the house, so it is not currently used as a popular sand.

The sand in the desert is produced by wind erosion, and the sand is very smooth and clean on the surface due to the long-term friction against each other, and the particles are very small and cannot be gathered together, resulting in the weak construction quality of the houses built and cannot meet the national industry standards, so the sand in the desert is rarely used in the construction industry, even if it is located in the desert of the United Arab Emirates, it can only be imported from other countries in the process of building the pavement.

There is only river sand, not only fluoride and its pearl oyster fragments, but also the size and gloss are just in line with the concrete requirements, so that everyone mining river sand not only does not need systematic special tools, but also does not need secondary processing, it can be sold directly, so the mining cost is very low. Therefore, in the past, the sand mining range of the public was particularly large, and there were even many sand stealing boats quietly mining.

Because the sand in the desert is very expensive to transport back to the mainland, and the alkali content is particularly high, which will affect the safety of the building to a certain extent.

The sand in the desert does not meet the standards of building materials, and its particles are more delicate and do not form structural stability.

No, after all, the desert is too far away from the city, and it will be very expensive to transport the sand in the desert.

To analyze sand in the desert that cannot be used as a building material, it is first necessary to understand the composition and properties of the sand in the building material, and then compare it with the sand in the desert.

Sand commonly used in construction: The sand used in construction is mainly composed of sand from rivers, lakes, seas, and mountains. Sea sand often contains harmful impurities such as shell crushing and soluble salts, but it is not conducive to concrete structures.

Mountain sand is the debris of rock, which is accumulated in the mountain gorge after weathering, and its particle surface is many, the surface roughness is large, and there are many mud and organic impurities on the mountain.

<> one of them also experimented, and took out two buckets of sand, one dug out of the river and the other of sand from the wilderness. And he poured out the sand to see the difference between the desert sand, and it was scattered and empty, and the river sand was attached to a certain shape. There were still heavy objects on the sand behind them, the heavy objects on the sand of the river did not move, and the sand in the desert was not heavy, and the cargo collapsed immediately.

It is worth mentioning that this is because the sand in the desert, especially the high winds, does not look at the ordinary sand, but is actually in it, but there is a cavity, the suction is very poor, and the water cannot be shaped. It can't bear the weight, and if you use it to build a house, in case something heavy, the house will be scattered and empty. Security is at great risk.

The sand of the desert cannot be used as sand in the building, which is the result of experiments carried out by the builders. The sand of the desert is blown away in a long month, the sand is completely weathered, loses its adhesion, and if it is built, it will inevitably lead to poor quality, unreliable walls that can be easily damaged. And river sand is not like this, it is hard sand, which is mixed with ash or cement and has a strong adhesion.

As a result, the building was built with river sand, which is stronger than the sand of the desert.

Sand in the desert cannot be used for construction: The sand in the desert is too thin to meet the building requirements. The sand in the desert is formed by natural weathering, so it has a high alkalinity and contains a lot of harmful substances.

River sand, through the rainwater washes the river and constantly grinds, the harmful substances in the sand are filtered, the river sand is relatively turbid, and the excellent building materials have qualitative differentiation, so that the sand in the desert cannot.

On the one hand, the sand in the desert has a certain salinity. Putting them together may corrode other building materials. When the time comes, it will not be good if the house itself is brought down.

On the other hand, the sand in the desert. It's a lot finer than the sand we use for construction. Some experts have studied it, and it cannot be used in construction at all.

Construction sand needs to maintain sufficiently large particles and uneven surfaces. In addition, the sand in the desert, which has not been washed, contains too many minerals, which can have an adverse effect on the solidification of cement. Moreover, transportation is also an aspect to be considered, plus screening, the cost is higher than that of river sand.

Therefore, desert sand cannot and does not need to be used on buildings.

The content of harmful substances is high, and the river sand is formed after many years of sedimentation, and in this long time, the mud in the sand, mica and other harmful substances are filtered and eliminated; The sand in the desert is basically the product of in-situ weathering, which undoubtedly contains more harmful components.

1. High alkali content. The sand in the desert is weathered over a long period of time in a dry environment exposed to the wind and sun, and the alkali content is too high. During use, there will be chemical reactions with certain substances in building materials, affecting the quality of the sand and gravel mixture, and thus affecting the construction.

Strength and security, which is also the most lethal point. 2. High content of harmful substances. Most of the sand in the desert is the product of in-situ weathering.

It has not undergone a filtration process of harmful substances and contains many harmful components. 3.The particles are too fine and have severe weathering.

Construction sand usually uses coarse or medium sand, which is why it is often screened, while sand in the desert is weathered for a long time because it is very dense, too fine, smooth and non-sticky, does not meet building standards, and if it is used to build a house, it may collapse after a while.

The state has strict regulations on the size of construction sand, the original name of these construction sand is sand, the diameter is 1 3 mm, which is obviously granular, and the diameter of the sand in the desert is about 1 millimeter, which can be said to be powdery, such sand will be very brittle after mixing with concrete, so that the safety factor of the house will decrease, and the sand in the desert has a lot of impurities and insufficient cleanliness.

Because the cost of excavation and transportation is too high, and the quality of building a house from the sand of the desert will drop a lot.

With the rapid development of the economy and the rise of the construction industry, the demand for sand is increasing, and even the supply exceeds the demand. Some people think, why can't we move the sand from the desert and build a house? This is mainly due to the high density of river sand, which can be tightly bonded to the bricks after being mixed with cement.

The fine sand in the desert is not good, it is not sticky, and it is very smooth, whether it is used to pave the road or build a house, it will not last long before it cracks and collapses. The sand in the desert is basically useless, only to be seen. <>

In fact, the sand in the desert is not born like this, some scientists have found that as early as 100 years ago, the original location of China's desert was actually a large oasis, but with the deterioration of the environment, the disappearance of vegetation, after the storm swept in, nothing could stop it. The first to be hit in this environment was the yellow sand, which was then eroded by the wind for thousands of years, becoming smaller and more rounded, and containing a large amount of alkali. <>

Not to mention that desert sand cannot build a house, even if there is a use, the transportation cost will be very high, after all, most of the desert is in remote areas. Bringing a machine to this deserted area to dig sand is difficult to afford both labor and freight. Therefore, the developer would rather dig up the river sand and use it directly without reprocessing, without considering the flashy desert sand.

Is desert sand really worthless, only for ornamental purposes? This is not the case at this time, as many cities in the south experience waterlogging during the rainy season because of drainage problems, and no matter how much it is improved, it cannot meet the rainfall demand. To solve this problem, you can replace some of the components with desert sand when building the passage, so that even if it rains heavily, the rainwater can seep down the small crevices.

This is also the idea of building a sponge city before, although it has not been realized at the moment, but I believe that it will not be long before the development of technology, maybe one day desert sand will be used for the benefit of mankind.