Why is the foundation sprinkled with lime, and what happens when the ground is sprinkled with a lot

The chemical name of lime is calcium oxide, commonly known as quicklime, after digestion, that is, the action of water becomes calcium hydroxide.

Commonly known as hydrated lime, quicklime to mature lime will increase the volume of exothermics, because this process to absorb a large amount of water, so the foundation can become dry, and the volume increase can make the foundation more compact. and then after a long period of hardening, that is, in carbon dioxide.

under the effect of calcium carbonate.

of over-achievement. So that the foundation has a certain strength. In addition, lime also has a disinfection effect, so there is no harm to the impact on the house, only benefits.

The foundation treatment specification stipulates that the ash soil is generally made of slaked lime, and the quicklime block should be fully digested by adding water 7-10 days in advance to become slaked lime.

slaked lime, silica or aluminum oxide after hydration and in the soil.

and ferric oxide and other substances combined, can generate cemented calcium silicate, calcium aluminate and calcium ferrite, cementing the soil, so that the ash has high strength and water resistance.

Generally, slaked lime is used, and quicklime blocks should be fully digested with water 7-10 days in advance to become slaked lime.

Slaked lime, after hydration, combined with silica or aluminum oxide and ferric oxide in the soil, can produce cemented calcium silicate, calcium aluminate and calcium ferrite, cementing the soil, so that the ash has high strength and water resistance.

To prevent moisture return, white lime can absorb water, and has a certain ability to block and strengthen the foundation, and the floor in your house is easy to get wet without it.

First, the main role of sprinkling quicklime in the ground.

Quicklime itself has many functions, but if you see them acting in the field, there are basically only two situations:

1. Disinfection and sterilization.

Quicklime will produce a chemical reaction when it encounters water, and in this case, it will release a large amount of hot gas, which is a scene we often see. Therefore, by sprinkling quicklime in the field, and then watering it through the buried soil of the farmers, the heat will be excited by the hot gas, and the temperature of the soil will also be increased, which can quickly disinfect the soil environment. This is also for the sake of the problem of pests and diseases in the future planting of green plants, and there will naturally be fewer pests in a high temperature environment.

2. Improve soil properties.

We all know that as a chemical, quicklime absorbs water to produce calcium hydroxide, which is an alkaline substance. This alkaline substance can neutralize the acidity of the soil in the field, and in the process of sprinkling quicklime, it can also further increase the calcium ion content in the soil. If you have been exposed to chemistry friends, you should know that calcium ions can make the entire soil environment more loose and improve soil properties.

3. Increase soil microbial activity.

Sprinkling quicklime on farmland, in addition to the above two points we mentioned, can also increase the activity of soil microorganisms. As long as the microbial activity is improved, the nutrient content of the soil will naturally increase, which can promote planting.

Second, the use of quicklime.

Although it is not difficult to sprinkle quicklime now, and the cost is low and easy to buy, but the precautions should be kept in mind.

1. Quicklime should be sprinkled in the field in an appropriate amount, not scattered in a large area at will, and the amount must be controlled according to the entire soil environment. If you sprinkle too much, not only will it not improve, but it will also aggravate the alkalinity of the soil.

2. Check the quality before buying quicklime, do not buy bad quality quicklime (such as impurities, or has agglomerate), do not buy too much at one time, and strive to use it up as soon as possible, long-term contact with air is easy to produce agglomeration and affect the follow-up effect.

Why are quicklime sprinkled in some fields? What does it do?

1.Improve the soil.

The heat released by the reaction of quicklime powder and water can kill insects and sterilize, and it can also improve the physical and chemical structure of the soil, comprehensively improve the soil function, and have a particularly good effect on the fertilizer efficiency of subsequent fertilization. The land is acidic, and land that is too acidic is not conducive to the growth of crops. Lime is an alkaline substance.

When we sprinkle lime powder in the ground, we can neutralize the pH of the land, so that the land is not too acidic. By treating the land in this way, it is possible to promote the activity of microorganisms, which is more conducive to the growth of crops.

2.Disinfection and sterilization.

Lime powder has the same effect as pesticides, that is, it kills pests and diseases. The most feared thing about crops is that they will be infested by pests and diseases. Even now, with the continuous progress of science, we have a variety of powerful pesticides that can control all kinds of pests and diseases.

However, the use of pesticides has a particularly serious drawback. That is, once pesticides are used improperly, it will lead to certain harm to human health. And the time of pesticide application is long, pests and diseases will also evolve, and then develop resistance.

In this way, the effect of the pesticide becomes insignificant.

3.Helps in production.

Lime powder can help to increase the value of the land. Lime powder is also a fertilizer in its own right. When we sprinkle lime powder into the ground, it can make the soil more and more abundant, and then increase the yield of crops. In addition, lime powder can replenish calcium to the land and supplement various nutrients in the soil.

When we all use quicklime daily, we must apply quicklime in an appropriate amount, according to the pH value of the soil to adjust the amount of quicklime, too little application can not improve soil acidity, too much will lead to high soil alkali. It is recommended not to use bad quality quicklime, like impurities, or has been agglomerate, when applying quicklime, it should be used as you buy and do not put it for a long time.

It has the effect of killing harmful algae. Sprinkled with lime on the ground can prevent the surface of the ground from slippery, and quicklime will react when it encounters water on the ground, thus helping to clean up moss and other breeding things on the ground, so when there is such a situation on the ground at home, you can sprinkle quicklime.

It may be possible to improve the environment of the land. It can make the soil softer and more conducive to sowing, and can remove some harmful substances in the soil, which can make the seeds grow better.

It is to prevent parasites from appearing in the field, better eliminate harmful substances in the field, and let the crops planted in the soil grow more vigorously.

Absorbent and moisture-proof, it has water absorption but not waterproofness, and is used for foundations that are cheap, practical and easy to clean.

The main component of the structure is calcium oxide (CAO).

The main component of limestone is calcium carbonate CaCO3, while the main component of quicklime is Cao.

Quicklime reacts with water to form calcium hydroxide Ca(OH)2, which is commonly referred to as hydrated lime.

Equation: cao+h2o=ca(oh)2

Uses:

Lime and limestone are used in large quantities as building materials and are also important raw materials for many industries. Limestone can be processed directly into stone and fired into quicklime. Lime has quicklime and hydrated lime.

The main component of quicklime is CAO, which is generally lumpy, pure white, and light gray or light yellow when containing impurities.

Quicklime absorbs moisture or adds water to become slaked lime, which is also called slaked lime, and its main component is Ca(OH)2. Hydrated lime is blended into lime slurry, lime paste, lime mortar, etc., which is used as coating materials and brick and tile adhesives. Soda ash is prepared from limestone, salt, ammonia and other raw materials through a multi-step reaction (Solvay method).

The limestone soil is quicklime ca0, which absorbs water and moisture, and it has water absorption but not waterproofness. Used for foundations is made for cheap, practical and easy to clean.

Yes

Lime is mainly used in the treatment of heavy water in the building, because the lime absorbs water, which can keep the building dry and hard after forming, if the water is too large, the building will produce a relatively large deformation, and it is not easy to compact, and it cannot reach the compaction required by the specification!

Precautions for construction site 1, before construction, the underground pipeline should be surveyed and obvious signs should be made to prevent water leakage, air leakage and electricity leakage, burns and other accidents during construction.

2. Do a good job of safety protection for key facilities such as on-site leveling points and electric poles.

3. Set up safety patrol personnel at the construction intersection to guide vehicles and pedestrians to detour the safety zone.

4. When manpower bends, the site should be selected to prevent slipping and falling, and the face should be avoided during operation.

The effect of lime sprinkled on the soil is to improve the pH of the soil, increase the activity of microorganisms in the soil, and help the growth of crops.

1. It can improve the pH of the soil: quicklime absorbs water to generate calcium hydroxide, which is an alkaline substance, which can neutralize the acidity of the soil, and the application of quicklime can improve the calcium ion content in the soil, calcium ions are a good soil binder, so that the formation of soil aggregates makes the soil loose and reduces the compaction of the soil.

2. Increase the activity of microorganisms in the soil: the application of quicklime can effectively improve the environmental conditions in the soil, increase the activity of beneficial microorganisms in the soil, and strengthen the decomposition and digestion of beneficial microorganisms, so as to improve the nutrients in the soil, improve the physical and chemical properties of the soil, and increase the yield of crops.

3. Helpful for crop growth: In today's agricultural production, the use of pesticides and fertilizers is very large, and most of these pesticides and fertilizers are acidic, so it is easy to cause soil acidification, which is very harmful to the growth of crops. Quicklime is alkaline, which can neutralize acidity well, improve the pH value of the soil, and have good benefits for the growth and development of crops.

Sprinkle lime use matters

Although there are many benefits of quicklime, but the use of quicklime also has certain restrictions, must be used in moderation according to the situation of their own land, such as rash use, not only did not achieve the desired effect, but made the soil environment worse.

1. The application of quicklime should be appropriate, and the dosage should be adjusted according to the pH value of the soil town, and too little can not improve the soil acidity, and too much will cause soil alkalinity.

2. Try not to use quicklime of poor quality (such as impurities, or has agglomerate), when applying quicklime, it should be used and sold, not stored for a long time.

Answer: Limestone can be used as a foundation material, but there are a variety of factors to consider.

Explanation: Limestone is a relatively common building material, its physical and mechanical properties are stable, and it can withstand large loads. However, there are a variety of factors to consider when it comes to being a foundation material.

First of all, you need to consider the local geological conditions, if the geological conditions are not good, such as uneven soil layer, different soil depths, you cannot use limestone as the foundation material. Secondly, the requirements of the foundation need to be considered, such as the bearing capacity and stability of the foundation. If the foundation is demanding, it is necessary to choose a harder, more stable material.

Expansion: In addition to the physical and mechanical properties of limestone, it is also necessary to consider factors such as the local geological environment and foundation requirements when selecting foundation materials. Commonly used foundation materials also include oak concrete, reinforced concrete, etc.

When choosing the foundation site, it is necessary to consider many factors to ensure the stability and safety of the building.

Limestone is not the best choice as a foundation material. Although limestone has certain strength and stability, its main component is carbonate, which is easily soluble in acidic substances, such as acid rain, etc., which is prone to dissolution and erosion, which leads to the instability and destruction of the foundation. Therefore, when selecting foundation materials, suitable foundation materials, such as concrete, masonry, etc., should be selected according to the geological conditions and the requirements of the building.

At the same time, in the process of foundation design and construction, attention should also be paid to strengthening the stability and seismic resistance of the foundation to ensure the safety and stability of the building.

Limestone is not suitable for use as a foundation, the main reason is that the strength of limestone is not high, can not bear the weight of the infiltration building, easy to make the foundation sink, and affect the life of the building, but also carefully shouted that the source is easy to be corroded by rainwater, and affect the safety of the building, so limestone can not be used as a foundation.

Limestone has a high calcium content, poor toughness, is susceptible to erosion, is prone to cavities and cracks, and its mechanical properties are quite different, so it is only suitable for the soft base of the foundation or the foundation of the building that does not require the ability of earthquake resistance and wind resistance. In addition, the safety and stability of the building not only depends on the material of the foundation, but also closely related to the design, construction and foundation treatment of the building. Therefore, when choosing foundation materials, a variety of factors need to be considered to ensure the safety and stability of the building.

Limestone tonade is often hard, but its physical and mechanical properties are poor compared to other rocks, and it is susceptible to chemical erosion. Therefore, as a foundation material, limestone is not the most ideal choice. However, in some cases, such as topography, geological formation, etc., limestone may be the only available foundation material.

In this case, the limestone foundation must undergo rigorous engineering design and reinforcement measures to ensure its stability and safety.

<> quicklime is a commonly used desiccant to remove water vapor by chemical absorption, and is also used for steel, pesticides, medicines, desiccant, tanning and alcohol dehydration, etc., what is the role of quicklime in the ground?

The function of quicklime is to improve soil acidity, prevent insects, sterilize soil, and increase yield. Because after the quicklime is sprinkled, heat will be generated during the ripening of the plum ridge, which will destroy the germs and insect eggs in the soil and reduce the insect infestation. Note that crops that like alkaline soil-sensitive high soil, plants should not be sprinkled to avoid bridge disturbance to affect growth.