What should I do if the cement has set? After the cement solidifies, it will break when it is pinche

If the cement warehouse can not be effectively cleaned for a long time, it will make the phenomenon of closing the warehouse serious, and will also increase the intensity of the next cleaning of the cement warehouse. Therefore, in order to avoid or reduce the settlement, it is necessary to clean the cement warehouse regularly, and the main methods are as follows:

1. Control the moisture of the abrasive: the two stacking sheds are used to store the desulfurization gypsum, so that the moisture content of the desulfurization gypsum can be ensured by the first in, and the mixed materials should be avoided from entering the cement warehouse in rainy days;

2. It is necessary to reasonably allocate the cement in and out of the warehouse, and arrange multiple blanking ports to evenly discharge the material to maintain the smooth blanking. Try to empty the cement in the warehouse before feeding to avoid the accumulation time of the warehouse for too long, not flowing and resulting in agglomeration;

3. The dust collection effect of the dust removal fan on the top of the cement warehouse should avoid the phenomenon of ash on the top of the warehouse, and the high-pressure cold air should be blown in as little as possible to reduce the moisture in the cement warehouse;

4. There should be a targeted plan for cleaning up the cement depot and adapting measures to local conditions. For the humid climate in the southern region, it should be carried out more, and the dry climate in the north is not easy to agglomerate, and it can be carried out again after a period of time.

Know the ambient temperature, how much to use according to the instructions of the antifreeze, generally speaking, the construction site is used a bag of cement, a flat shovel antifreeze. The strength grade of concrete is different, the amount of cement is also different, the antifreeze should be added according to the amount of cement, can not be greater than 5% of the amount, generally add the amount of 3% 4% antifreeze. Acid and calcium carbonate reaction will have carbon dioxide gas, but the gas is not only carbon dioxide but also other things smell bad, after the end of those foams can not be touched with your hands, but also hurt people or walls and ground, if they are all glued together, you can consider using acid to decompose them with a hammer, and then move out.

If you can solve it by force, you can solve it by force! Acids can be acetic acid (but not very effective), hydrochloric acid (easy to hurt hands but good effect).

Summary. Hello, I am glad to answer for you, because the ratio of cement and water is incorrect, resulting in the strength of the white cement is too low, in this case, the white cement is easy to break when touched; When this happens, try remixing the cement with the water. It may also be because the quality of the cement is not up to standard, resulting in the blended white cement breaking when touched.

What to do if there are cracks in the wall cement 1. When encountering the cracking of the wall cement, the first thing to do is to clean the cracks and the wall around the cracks, and clean up the dust and residue. Then the water and repair materials are mixed according to the standard, and after they are mixed evenly, the cracks in the wall can be repaired. 2. Coat the cracks with stirred materials and fill them with cracks, because most of the repair materials are very fast in solidification, so the coating speed must be faster, otherwise the cracks will solidify before they are filled, resulting in the bottom of the cracks not being filled.

After repairing, apply adhesive tape on both sides of the crack to avoid spillage of repair material. 3. After gluing the tape, apply the repair material again, and operate along both sides of the crack when applying, and tear off the tape after the wall is flat. After that, the repair material is evenly applied around the crack to make the crack and the wall integrated.

It looks more aesthetically pleasing.

After the cement solidifies, it will break when it is pinched, what is the reason?

Hello, I am glad to answer for you, because the ratio of cement and water is incorrect, resulting in the strength of the white cement is too low, in this case, the white cement is easy to break when touched; When this happens, try remixing the cement with the water. It may also be because the quality of the cement is not up to standard, resulting in the blended white cement breaking when touched. What to do if there are cracks in the wall cement 1. When encountering the cracking of the wall cement, the first thing to do is to clean the cracks and the wall around the cracks, and clean up the dust and residue.

Then according to the standard of water and repair materials are mixed, and after they are stirred evenly, the wall crack wheel or seam hail can be repaired. 2. Coat the cracks with stirred materials and fill them with cracks, because most of the repair materials are very fast in solidification, so the coating speed must be faster, otherwise the cracks will solidify before they are filled, resulting in the bottom of the cracks not being filled. After repairing, apply adhesive tape on both sides of the crack to avoid spillage of repair material.

3. After gluing the tape, apply the repair material again, and operate the wax stove along both sides of the crack when applying, and tear off the tape after the wall is flat. After that, the repair material is evenly applied around the crack to make the crack and the wall integrated. It looks more aesthetically pleasing.

Dear, remember to wear a mask when you go out, pay attention to protection, and protect yourself, here the teacher wishes you a happy life and smooth sailing.

According to the relevant national regulations, the initial setting time of cement should not be less than 45 minutes, and in the case of Portland cement, the final setting time should not exceed one hour. Generally, the solidification and hardening of cement can be divided into: the initial reaction stage is 5-10 minutes; Incubation period 1 hour; Coagulation period 6 hours; The scleroping period is 6 hours to several years.

The solidification of ordinary Portland cement requires temperature and time; Hydration is usually best done at around 20 degrees Celsius. Specialty cement takes only 10 minutes or less. The initial setting of special cement constructed under some water is almost the same as the speed of vibration.

This is because it needs to solidify quickly to produce an effect.

The initial setting time of the six commonly used cements shall not be less than 45 minutes, the final setting time of Portland cement shall not be longer than hours, and the final setting time of the other five types of commonly used cement shall not be longer than 10 hours.

According to the speed of the hydration reaction and the main changes in physical and chemical chemistry, the solidification and hardening of cement can be divided into:

1. The initial reaction stage is 5-10 minutes;

2. The condensation period is 6 hours;

3. The hardening period is 6 hours to several years.

Clean it with dilute hydrochloric acid or dilute sulfuric acid used in the laboratory of the cement factory and it will be dropped! Because cement is alkaline, it melts or dissolves when exposed to acid. However, strong acids can damage the ground where the cement has solidified.

According to the definition of initial setting of cement liquid, when the cement slurry changes from the flow plastic state to the hard plastic state, and initially has a certain shape, it is called the initial setting of cement; The definition given in the specimen is that when the test needle is sunk to 4mm 1mm from the bottom plate, the cement is considered to be the initial setting when the needle is tested by the initial setting needle.

Clean with cement cleaner.

Generally, the cement cleaning agent is composed of compound acid, resist agent and descaling accelerator, which can quickly and thoroughly dissociate the accumulation of cement scale, rust scars and other minerals, so that the sediment and the sediment in the cement scale are washed away together, the cement cleaning agent is acidic, please be careful not to contact it for a long time.

If it comes into contact with cement, rinse it with clean water in time, and add a little vinegar to the water to neutralize the alkalinity. Buy some moisturizing hand cream and soak it in warm water at night before going to bed** before applying hand cream.

The main components of cement are limestone, clay, and iron ore powder in proportion, and the mixture at this time is called raw meal. After the neutralization reaction in the air, calcium carbonate is formed, which can be combined with acid.

If the cement solidifies, this problem is difficult to solve, and if the cement in the cement tanker is solidified, it can only be chiseled.

There are two ways to do this; First, clean it with dilute hydrochloric acid or dilute sulfuric acid used in the laboratory of the cement plant! Because cement is alkaline, it melts or dissolves when exposed to acid. However, strong acids can damage the ground where the cement has solidified.

Second, clean with cement cleaner. Generally, cement cleaning agent is composed of compound acid, resist and descaling accelerator, which can quickly and thoroughly dissociate the accumulation of cement scale, rust scars and other minerals, so that the sediment and the sediment in the cement scale are washed away together. Generally, the cement cleaner needs to be diluted before use.

However, cement cleaners are acidic, so be careful not to contact them for a long time**.

Take him to the hospital, don't peel it raw, it's easy to cause ** damage. Go to the hospital and let the doctor figure it out.

From what you said, it shouldn't be too strong to condense, try to start from the center of the foot to go to the sole, there will be some space under the center of the foot. There should be a way to remove the entire sole.

It is said that cement and meat do not occupy a piece, so let's destroy the shoes. Pay attention to your child's feet when doing it.

For the cement that has solidified, the cement block can be shoveled down and removed. Cement is a powdery hydraulic inorganic cementitious material, and the solidified cement is a hard material, so its brittleness can be used to stick the hole on the surface of the cement shovel. It can also be removed with a cement cleaner, which can break down cement scale and rust scars, so it can remove the cement that has solidified.

After the cement is stirred with water, it can be hardened in the air or hardened in water, and can firmly cement the sand, silver, stone and other materials together. It is widely used in civil engineering, water conservancy, national defense and other projects. Fighting.

Cement hardened by moisture will reduce or even lose its original strength. The cement that has been damp into a clump or hardened must be used after screening, and the screened clump is generally used for masonry mortar or plastering mortar for secondary projects after being finely rubbed or milled.

After the cement solidifies, it will break when it is pinched, what is the reason?Generally, the shelf life of cement is only three months, and it will react with water and carbon dioxide in the air. Your cement or concrete will crumble as soon as you pinch it, and if it is concrete, what do you say is dry after the final setting, or after the curing period?

Your elaboration is not clear, and you cannot explain it. Why do cement cushion blocks break when pinched?

First of all: if you do not press according to the guidance method of the cushion block machine manufacturer, the pressing time is too short, which will also affect the density of the cushion block, resulting in the loose texture of the cement cushion block product, which is fragile and cannot be formed.

Secondly: the problem of raw material configuration, in the process of mixing the cushion block material, the control of the water content should be just right, and the cushion block with too high water content should not be formed, and at the same time, it will also lead to the strength of the raw material is not up to standard, which seriously affects the quality of the project.

Finally: the selection of cushion block machine equipment, of course, there are some non-professional small cushion block machine manufacturers, there are certain technical and production problems, so friends who buy cushion block machine must find a professional manufacturer, so as to ensure the quality of cushion blocks. Zhengzhou Xianchi Machinery Manufacturing **** is one of the manufacturers specializing in the production of cushion block machine equipment, friends who want to buy can come to our company to inspect and buy.

One reason is the quality of the cement, or the failure to achieve the solidification strength. The second is that the cold weather causes ash on the surface of the concrete. Then you may add less cement, and it will be the same.

There is also a certain difference between manual mixing and mechanical mixing, and the mixed concrete is too thin and will also lead to ashing. The surface can be covered with a layer of cement, and it will not be dusted after the strength is sufficient.

Summary. First of all, we need to understand the chemical properties of cement, the main components contained in cement are alkaline substances such as calcium hydroxide, so if we want to dissolve cement, we can use substances with acidic components to react with it, such as hydrofluoric acid, hydrochloric acid, etc. 2. There is a cement dissolving agent on the market, which is made according to the chemical properties of cement, and we can use cement dissolving agent to dissolve cement.

Hello, upon inquiry:

First of all, we need to understand the chemical properties of cement, the main components of cement are calcium hydroxide and other alkaline substances, so if you want to dissolve cement, I mean that you can use substances with acidic components to chemically react with it, such as hydrofluoric acid, hydrochloric acid, etc. 2. Now there is a cement dissolving agent on the market, which is made according to the bright chemical properties of cement, and we can use cement dissolving agent to dissolve only key belt cement.

First spray some water around the cement block, use this sail letter to reduce its hardness, and after the water is soaked in the cement block, we use the prepared shovel to put it on the root of the cement block, and aim at the root to remove it. Here is a reminder, in the process of eradication, we must pay attention to the safety of the sedan car, in case the shovel will hurt the fingers, if you do not have this experience, it is best to ask a professional master to help eradicate.

A shovel can be used to slowly shovel down the solidified cement blocks, and since cement is a hard material, it can be used to use its brittleness to shovel down the cement attached to the surface. It can also be removed with a cement cleaner, which can remove the cement scale along with the sediment because it can break down the cement scale and rust scars. <

A shovel can be used to slowly shovel down the solidified cement blocks, and since cement is a hard material, it can be used to use its brittleness to shovel down the cement attached to the surface. It can also be removed with a cement cleaner, which can remove the cement scale along with the sediment because it can break down the cement scale and rust scars.