Isn t there no need to remove formaldehyde in cement houses?

In the past, every household was a cement house, and then some simple furniture was added to paste tiles in it, so there was no such thing as excessive formaldehyde, but now it is different, and a variety of decoration styles will use a variety of decoration materials, that is to say, decorating a new house has become a very complicated thing, which will make the indoor formaldehyde and other harmful gas concentrations will be very high, so that the removal of formaldehyde has become a very important thing. And in addition to formaldehyde is also a very professional thing, in the early days we will rely on opening windows for ventilation or at home to put some green plants and charcoal bags to remove formaldehyde, but then people found that these methods do not have much effect on removing formaldehyde at all, people understand that indoor formaldehyde is volatilized from decoration materials and furniture, so to remove formaldehyde has to start from the source of these pollution, at this time photocatalyst formaldehyde removal technology is also introduced. Compared with other formaldehyde removal methods, photocatalysts can directly and effectively catalyze the decomposition of formaldehyde, so let's talk about some advantages of photocatalysts to remove formaldehyde!

First of all, the photocatalyst can directly and efficiently catalyze the decomposition of formaldehyde, and there is no too difficult follow-up operation after the use of the photocatalyst, only need to turn on the indoor lights for two days, so that the photocatalyst will penetrate into the inside of the pollution source, so as to play the role of catalytic decomposition of formaldehyde, and only need to do a simple cleaning afterwards.

Secondly, the photocatalyst is also non-toxic and harmless to remove formaldehyde, so that it will not cause secondary pollution to the indoor air, as a product to remove formaldehyde, it must be very high for the effect and health requirements of removing formaldehyde, when the photocatalyst construction operation waits for two days, it will not be harmful to the human body after the indoor spray is completely dispersed, after all, the photocatalyst can decompose formaldehyde into carbon dioxide and water.

Finally, the photocatalyst has a strong sustainability, if you have a certain understanding of formaldehyde, you will know that the formaldehyde in the decoration materials and furniture will be released for 3-15 years, that is to say, formaldehyde will be released from the source of pollution for a long time, in this case, the short-term decomposition of formaldehyde is obviously not enough, the photocatalyst can achieve a stable catalytic decomposition cycle of up to 5 years, and at the same time, the professional formaldehyde removal company will be guaranteed for life after the construction of the photocatalyst treatment. That way we don't have to worry about anything!

No, there will also be a strong formaldehyde smell inside, which will have a reverse moisture effect at this time, and it also needs to be professionally treated.

No, this also needs to be decided according to the actual situation, if you buy new furniture at home, you also need to remove formaldehyde at this time.

No, even if it is a cement house, there will be some decoration and some paint use, and formaldehyde must be needed, so you must pay attention to ventilation.

Hello dear, there is no formaldehyde in cement, although cement is a chemical, but most of the materials used are environmentally friendly, but there is hexavalent chromium in cement, which is a toxic gas, hexavalent chromium has a carcinogenic effect, it can be seen that the harm of cement is also greater than that of talking about years, which will harm human health. Cement is one of the important materials for building houses, so many construction site masters will wear masks, and ventilation is required to buy a new house, because after the decoration of the new house, there is more or less some formaldehyde ingredient.

No. The main harmful substances in cement are: chlorine and hexavalent chromium.

Formaldehyde is generally contained in wooden items. Among the chemicals, although cement is also a chemical, the production process is almost physical, so cement generally does not contain formaldehyde.

Chloride ions can cause corrosion of steel bars and reduce the durability of reinforced concrete. Hexavalent chromium has a carcinogenic effect and pollutes the ring. In addition, free calcium oxide (CAO) and magnesium oxide (MGO) in cement are also harmful substances, and excessive content will lead to poor stability of cement.

Cement does not contain formaldehyde. As an important cementitious material, cement is widely used in civil construction, water conservancy, national defense and other projects. The general cement is made of limestone and clay, and the main component is silicate, which will not contain formaldehyde, and formaldehyde will not be added in the production process.

However, in order to achieve some special effects in the use of various cements, auxiliaries and additives will be added, such as adhesives will contain formaldehyde and volatilize, such as antifreeze, quick-drying agents contain ammonia, and will volatilize ammonia.

I have been in the engineering industry for so many years to tell you that formaldehyde is generally contained in wooden objects. Among the chemicals, although cement is also a chemical, its production process is almost physical, so cement generally does not contain formaldehyde, and do not be made by formaldehyde.

The Internet said that there is no formaldehyde, but I bought a certain Chinese brand problem cement in Zibo, there is a faint smell of ammonia, I didn't smell it after paving the tiles, the ammonia smell is strong after removing the tiles, and there is formaldehyde, ammonia is 50ppm, and hydrogen, the manufacturer also deceived and concealed the treatment, I bought it monthly, and there are experts to help explain the reason?

Generally, formaldehyde is used more in glue.

The cement is formaldehyde-free.

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.

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.

The mixture of early lime and pozzolana is similar to that of modern lime pozzolana cement [1], which cemented crushed concrete is not only strong when hardened, but also resistant to erosion by fresh or salt water. For a long time, as an important cementitious material, it has been widely used in civil construction, water conservancy, national defense and other projects.

Cement is divided into the following according to its use and performance:

1) General cement: cement usually used in general civil engineering and construction projects. General cement mainly refers to:

The six categories of cement specified in GB175-2007 are Portland cement, ordinary Portland cement, slag Portland cement, porosyl Portland cement, fly ash Portland cement and composite Portland cement.

2) Special cement: cement for special purposes. Such as: G-grade oil well cement, road Portland cement.

3) Characteristic cement: a certain cement with outstanding performance. Such as: fast-hardening Portland cement, low-heat slag Portland cement, expanded sulfoaluminate cement, phosphoaluminate cement and phosphate cement.

Cement is divided into the following according to the name of its main hydraulic substance

1) Portland cement, commonly known as Portland cement abroad;

2) Aluminate cement;

3) sulfoaluminate cement;

4) Ferro-aluminate cement;

5) Fluoroaluminate cement;

6) Phosphate cement.

7) Cement with volcanic ash or potentially hydraulic and other active materials as the main component.

Yes, it contains formaldehyde, and the more abundant is radon, which is a radioactive substance, but the road surface is not very harmful, after all, it is open, and it is very harmful when it is closed. Minimize in such newly built houses, unless after the removal of aldehydes.

I am engaged in work to be able to contact some cement manufacturers, now in the process of making cement are added formaldehyde, which is conducive to the accelerated solidification of cement, in the spring humidity of about 20 degrees Celsius, the cement with formaldehyde solidification 2-3 days, if not added, it will take at least 7-8 days. Therefore, it is best to do the determination of formaldehyde content when buying a new house.

Cement does not contain formaldehyde.

It has another harmful substance, chlorine and hexavalent chromium, which can cause cancer if commonly exposed. At the same time, free calcium oxide, magnesium oxide and other substances in cement are also harmful, and if the content is too high, it will affect the health of construction workers. Therefore, personnel who have been in contact with cement for a long time must take corresponding protective measures.

What are the cements:

1. Portland cement.

This is the six major cements are more commonly used, it has the advantages of frost resistance, compact structure, hydration and heat release, etc., and the dry scatter is reduced, and it has a good application effect in many occasions, for example, for example, there are early strength requirements, wear resistance requirements, and concrete projects subject to freeze-thaw cycles are applicable.

2. Ordinary Portland cement.

This kind of cement is more common in building structures, especially in concrete structure engineering, which is cheaper than the previous one, and the performance in terms of strength is weaker, and it is not suitable for use in some large-volume concrete, or it is easy to contact with chemical erosion.

3. Slag cement.

It is made by replacing 20-70% of the clinker in the original cement raw material with slag, which has the characteristics of insufficient strength in the early stage and high strength in the later stage. The heat resistance and corrosion resistance of this kind of cement are good, but the performance of frost resistance, dry shrinkage, impermeability, carbonization resistance and other aspects is insufficient.

4. Fly ash cement.

20-50% of the clinker in the raw material is replaced by fly ash, which has good performance in crack resistance and dry shrinkage, but is not heat resistant. This kind of cement is generally used in large-volume concrete projects in the ground or water, which has good performance and is not prone to cracking and other problems.

The interior of most newly renovated houses contains a certain amount of formaldehyde, because the release cycle of formaldehyde is relatively long, which will be as long as 3-15 years, so it is not surprising that the indoor formaldehyde exceeds the standard, especially in the newly renovated room. Many owners use various methods to remove indoor pollution, and even listen to some unfounded rumors, resulting in no effect after trying, not only spending time and energy to do useless work, but also making indoor air pollution more serious. Today, the environmental protection gentleman will expose these rumors that "deceive" many owners, and send some scientific and correct methods to remove formaldehyde.

In addition to formaldehyde, six rumors.

One: vinegar fumigation.

Many people think that vinegar is acidic and can react with ammonia in the air, so put some vinegar at home for fumigation, but in fact, vinegar does not react with formaldehyde or ammonia, and has no effect.

Two: Place fruits and vegetables.

Some people will put some vegetables, fruits, and fruit peels in some corners of their homes, thinking that plant fibers can adsorb formaldehyde. In fact, the fruit will emit some fragrance, which plays a role in masking the smell of decoration, but it cannot decompose or remove harmful substances such as formaldehyde.

Three: Place a basin of water.

Some people think that formaldehyde can be dissolved in water, so they place a basin of water indoors, hoping that the indoor formaldehyde can be dissolved in water, but the formaldehyde in the air is difficult to react with still water without power, and there are so many formaldehyde in the air, and only a very, very small part can be dissolved by a basin of water.

Four: Put candles.

It is impossible to burn formaldehyde by lighting a candle, because the composition of the candle is mainly animal and plant oil and fat, formaldehyde is a less stable organic matter, and it will be evenly distributed throughout the room. When the candle burns, formaldehyde is converted into formic acid, and the oxygen in the room is reduced, and the reduction of oxygen is harmful to the human body, and the candle will also release lead, mercury, etc., which are harmful to the human body during the burning process.

Five: Over-reliance on plants.

Plants can adsorb formaldehyde to a certain extent, but the adsorption area of plants is relatively limited, and only in a lightly polluted room, plants can effectively play, if the indoor pollution is more serious, plants are also susceptible to formaldehyde poisoning withering and death.

Six: Blind ventilation.

Ventilation is a very convenient and affordable method, and it is effective, but it is not advisable for consumers to ventilate blindly, regardless of the season and the level of pollution. On the one hand, when the temperature is below 20 in winter, pollutants in decoration materials and furniture are rarely released. On the other hand, if there is a serious pollution problem due to material and process problems, ventilation is difficult to solve.

The feeling is that the plant absorption can't be believed, because the effect is too poor and slow.

Nowadays, home decoration is inseparable from decorative materials, but the application of these materials will also produce a large amount of formaldehyde. Some people feel that they can put some plants in their new home to remove formaldehyde. In fact, there is no scientific basis for this, and the most scientific method is to use rice vinegar, because rice vinegar can dissolve formaldehyde in the air.

Some people don't take measures at all, just open the windows for ventilation, but in fact, the removal is incomplete.

It is the use of some plants to remove formaldehyde, the effect is not particularly good.

Formaldehyde is produced during the decoration process and after decoration, harmful to the human body, when the human body inhales an appropriate amount of formaldehyde, then it will cause strong damage to the health of the human body, therefore, it is imperative to marry the power, but there are many methods on the market to produce formaldehyde are unscientific, there are some soil methods that can not be believed, and even these soil methods will breed formaldehyde more. There is a local method, that is, before moving into the new house, invite many friends to enter the room together to inhale formaldehyde, this soil method is not feasible, because this will cause harm to the body of friends.