What do I find when I mix sand and dirt in water, stir and let it sit for a while?

Different soil particle fractions and densities are different, which can generally be divided into four grades: gravel, sand, silt and clay. In general, the coarser the particle size, the higher the density. Coarse grains are generally denser particles, so they precipitate first, and fine grains precipitate later, so they can be stratified.

Soil refers to a layer of loose material on the earth's surface, composed of various granular minerals, organic matter, water, air, microorganisms, etc., which can grow plants. Minerals formed by the weathering of rocks, organic matter produced by the decomposition of animals and plants, microbial residues, soil organisms (solid-phase substances), water (liquid-phase substances), air (gas-phase substances), and oxidized humus.

and so on. Solid matter includes soil minerals, organic matter and nutrients obtained by microorganisms through light sterilization. Liquid matter mainly refers to soil moisture.

Gases are the air present in the pores of the soil. These three types of substances in the soil constitute a contradictory unity. They are interconnected, mutually restrictive, provide the necessary living conditions for crops, and are the material basis of soil fertility.

I reconciled with you, stirred in the waterproof water and let it sit for a while, and I found a section created by the water and sand.

If you mix sand and mud together, add water and stir for a while, it will become harder and more compact. Because the two are fused together, and there is water precipitation, the bottom will become very hard and dense.

turbid at first, now a suspension;

After a period of time, it gradually stratified, the upper layer is water, the lower layer is soil, and finally it is completely separated, and the water layer returns to clarity, because the turbidity liquid is unstable.

This experiment is used to illustrate the difference between the properties of a solution and a turbid solution.

Summary. Hello dear. We'll be happy to answer for you.

Kisses that will solidify, cannot, generally only cement soaked in water can not solidify. If cement, sand, stones, etc. are added to the water and stirred evenly, it will solidify. The setting time of adding other materials to the water will be affected by the temperature, for example, when the temperature is low, a coagulant needs to be added to solidify the cement.

I hope I can help my relatives, I wish my relatives good health and all the best!

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Hello dear. We'll be happy to answer for you. Kisses that will solidify, cannot, generally only cement soaked in water can not solidify.

If cement, sand, stones, etc. are added to the water and stirred evenly, it will solidify. The setting time of adding other materials to the water will be affected by the temperature, for example, when the temperature is low, a coagulant needs to be added to solidify the cement. I hope I can help my relatives, I wish my relatives good health and all the best!

Hello, dear, if the sand and clay are mixed with water and put them in the balance for a period of time, they will have a solidification phenomenon, that is to say, after you mix it, you put it in a fixed mold, what kind of shape is it, and after a period of time, it will become such a shape, so that it will be solidified. After curing, it is very hard and cannot change the shape again.

The first floor explains the chemical reaction of cement when it meets water.

In fact, the reason why cement, water, and sand solidify together is because these reactions of cement when it encounters water have basically nothing to do with sand.

Second, as for why it will solidify and harden, it is because the components generated after the reaction are gelatinous, crystalline, and powdery, and when the cement reacts with water, the excess water is removed, and the gelatinous substance solidifies to form a solid adhesive framework to make the crystalline substance closely combined with the powdered substance to form a composite structure with high hardness.

In the actual use of the process often add sand, sometimes add steel frame, stone particles, in fact, the principle is the same, the existence of steel bars will make the whole structure more stable, not easy to deform, sand, the existence of stone particles, can make the whole structure harder, not easy to destroy.

Cement, powdered hydraulic inorganic cementitious material. After adding water and stirring into a slurry, it can be hardened in air or better hardened in water, and can firmly cement sand, stone and other materials together.

Coagulation and hardening of cement:

cao·sio2+h2o cao·sio2·yh2o(gel)+ca(oh)2;

cao·sio2+h2o cao·sio2·yh2o(gel)+ca(oh)2;

Cao·Al2O3+6H2O 3Cao·Al2O3·6H2O (calcium aluminate hydrate, unstable);

3cao·al2o3+3caso4·2 h2o+26h2o 3cao·al2o3·3caso4·32h2o (aluminite, calcium trisulfide hydrated aluminate);

3cao·al2o3·3caso4·32h2o+2 3cao·al2o3 +4 h2o 3 3cao·al2o3·caso4·12h2o (monosulfide calcium hydrated aluminate);

cao·al2o3·fe2o3+7h2o→3cao·al2o3·6h2o+cao·fe2o3·h2o

Cement is in powder form, mixed with water, can be changed from plastic slurry to hard stone body through physical and chemical process, and can cement the bulk material into a whole, is a good mineral cementitious material. Cement can not only harden in the air, but also better harden in water, maintain and develop strength, so cement belongs to hydraulic cementitious materials, it can be used in aboveground, underground, water engineering.

1 Cement.

Cement is a very important building material, and high-rise buildings and various construction projects are inseparable from it. Cement is hydraulic, and it is easy to solidify and harden when mixed with water, so cement is used as a building material because of this excellent property. And because it can also harden in water, it is also an indispensable material for underwater engineering.

Clay and limestone are used as the main raw materials, and after grinding and mixing, they are calcined in a cement rotary kiln, and then an appropriate amount of gypsum is added, and ground into fine powder to obtain ordinary cement.

The main components of ordinary cement are tricalcium silicate (3Cao·SiO2), dicalcium silicate, (2CaO·SiO2) and tricalcium aluminate (3Cao·Al2O3).

The mixture of cement, sand and water is called cement mortar, which is a construction adhesive that can bond bricks, stones, etc.

A mixture of cement, sand, and gravel is called concrete. Concrete is often made of steel bars, which is what we often call reinforced concrete structures. Reinforced concrete has high strength and is often used to build tall buildings such as high-rise buildings and bridges.

Before liberation, the cement used in China mainly relied on imports. After the founding of the People's Republic of China, the cement industry has developed rapidly, and at present, China's cement output has jumped to the forefront of the world.

Information Cement labeling.

After cement is hardened in air, it has compressive strength, which is calculated in kg cm2. The mortar specimen is made by mixing cement and sand at a ratio of 1 2 5, and the compressive strength value of this specimen when cured in water for 28 days is called the cement mark. For example, if a mortar sample made of 1 part cement mixed with 2 or 5 parts of sand is hardened in water for 28 days, the compressive strength is measured to be 425 kg cm2, and the cement is labeled 425.

The larger the grade of cement, the better its performance. The commonly used Portland cement is No. 325, No. 425, No. 525 and No. 625, and some high-strength cement can be marked with more than 1000.

Because cement is a water-coagulable material.

Cement is hydraulic, which means that cement reacts chemically when it encounters water and becomes hard, which has nothing to do with sand mixing.

Add mud to the water, stir thoroughly, and pour out the mud water, leaving sand or dirt?

It's a pleasure to be able to starve your questions. The rest is still dirty. Because after the sediment is put into the water, the limbs are stirred, but there is still most of the soil that cannot be melted into the water, and when the water is poured, the rest is still muddy.

Kiss! Hello, happy to answer your <>

The principle of cement stabilized gravel is to use graded gravel as aggregate, using a certain amount of cementitious material and sufficient mortar volume to fill the void of the aggregate, and paving and compacting according to the principle of inlay extrusion. Its compaction is close to compactness, and its strength mainly depends on the principle of intercalation and locking between the gravel, and at the same time, there is enough mortar volume to fill the voids of the aggregate.

Its initial strength is high, and the strength increases with the age and quickly forms a plate, so it has high strength, impermeability and frost resistance. The amount of cement stabilized gravel cement is generally 3% 6% of the mixture, and the unconfined compressive strength can be reached in 7 days, which is higher than that of other subgrade materials. The cement stabilized gravel is not muddy in the rain after survival, and the surface is solid, which is an ideal base material for high-grade pavement.

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After adding soil to the water and stirring it thoroughly, the mud water is poured out and repeated several times, and finally all that remains is the precipitated soil particles. This is because soil particles are heavier than water and settle to the bottom of the water when added to the water. By repeatedly pouring out the mud water, the soil particles can be deposited continuously, eventually forming a layer of soil that is thick enough.

This method is often used to make ceramics, building materials, <>

<> add mud to the water, stir it thoroughly, pour out the mud water, and after repeating it a few times, what is left and why?

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After adding mud clumps to the water and stirring it thoroughly, the muddy water is poured out and repeated several times, and finally all that remains is the precipitated soil particles. This is because the soil particles are heavier than water and will settle to the bottom of the water when added to the water bench stall. By repeatedly pouring out the mud water, the soil particles can be deposited continuously, eventually forming a layer of soil that is thick enough.

This method is often used to make ceramics, building materials, <>

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Soil impurities, stones, and other unwanted substances are separated to obtain a relatively pure soil. In practice, this method is also widely used in the field of water treatment and wastewater treatment. Drinking water, industrial water and sewage water can be added to remove the suspended and dissolved impurities by adding soil substances to achieve the purpose of purifying the water body.

In addition, this method can also be used to detect rock formations, excavate the foundation of building foundations, and install pipes and cables, etc., and has a wide range <>of application prospects

Hello, I'm glad you asked: Will cement and sand be dry mixed and then poured with water will solidify Strictly speaking, this operation will definitely solidify. In fact, the reason why cement, water, and sand solidify together is because of these normal reactions of cement when it encounters water.