What is the difference between 325 cement and 425 cement?

1. Different hardness and softness.

325 cement.

It belongs to soft cement, and 425 cement belongs to hard cement.

2. The compressive strength is different.

The 28-day compressive strength of 325 cement is not less than, and the 28-day compressive strength of 425 cement is not less than.

3. Different uses.

325 cement is generally used to paste tiles, build walls, paint walls and plaster, decorate houses, etc. 425 cement is generally used to beat concrete, pave streets, ground, build houses, large columns, beams and slabs of bridges, etc.

The national standard stipulates that the codes are as follows: Portland cement is Por p, ordinary Portland cement, slag Portland cement, pozzolana Portland cement, fly ash Portland cement, composite Portland cement and so on.

For example, the most commonly used code name for ordinary Portland cement is.

325 425 525 of domestic cement is the old national standard, and its strength grade is equivalent to the current national standard,,。

The current national standard code is:

GB175-1999 (Portland cement, ordinary Portland cement standard).

GB1344-1999 (standard for slag Portland cement, pozzolana Portland cement and fly ash Portland cement).

GB12958-1999 (standard for composite Portland cement).

Of course, there are many special cement standards, which are not detailed here.

Cement is an indispensable material in the decoration process, and there are many medium models of cement on the market in China, such as 225 cement, 325 cement and 425 cement and so on. So, what is the difference between 425 cement and 325 cement? What should I pay attention to when buying cement?

Let's find out together.

The difference between 425 cement and 325 cement is mainly in terms of hardness and strength, 425 cement is a hard cement, generally used for concrete and paving, etc., while 325 cement is a soft cement, mainly used for tiling, dismantling plastering and decoration. In addition, there is also a certain difference between these two types of cement, 425 cement is more expensive than 325 cement.

Precautions should be paid to the purchase of cement.

1. When buying cement, first of all, observe whether the paper bag packaging is intact and see if it has a logo. If the name of the cement is provided on the packaging bag, then it means that this kind of cement is a more practical, for example, the pozzolana cement is marked in black.

2. When buying cement, you can touch the cement powder with your own fingers, if you feel a little sand or powder during the touch, then it means that the fineness of the cement is normal. In addition, it is also necessary to observe its color, which is also very important, for example, to see if the color of the cement will show dark gray or dark green, the color determines the strength of the cement, if there is white slag, then it will affect the overall quality.

3. Generally speaking, when buying cement, everyone will look at its use date, if it has been used for more than a month, then its performance will be reduced. Usually the cement with good quality will not appear caking, and it can easily solidify in more than 6 hours.

Article summary: The above is all about the difference between 25 cement and 325 cement and what to pay attention to when purchasing cement, I hope it will be helpful to you. If you want to know more about it, please stay tuned to Qeeka Home.

Enter the area and get the decoration for free**].

There are also different types of cement, the more common ones are 325 types of cement, there are 425 models, and there are 525 types of cement in addition to co-combustion. These types of cement are widely used in the construction industry, and today I will introduce the difference between 325 cement and 425 cement Zhaoye.

1. What is the difference between 325 cement and 425 cement?

1. The biggest difference is the different strength, the compressive capacity of 425 type cement is more prominent than that of 325 cement. And after the end of construction, about a month or so, the compressive value of 325 cement can be reached, and the compressive strength of 425 type cement can be reached, which shows that the strength of 425 type cement is higher.

2. The reason for such strength is mainly that in the process of producing cement, the ratio of raw materials is different, and the firing time will be different, so cement of different strength will be produced to meet the needs of the market. Under normal circumstances, the 425 model of cement is more expensive than the 325 model of cement.

2. 325 cement or 425 cement for rural construction.

1. If it is a self-built house in the countryside, because some floors are relatively low, only one or two floors, you can choose 325 type cement, and its strength is enough to use. If you choose the 325 model, you can also save a lot of money.

The main thing about model cement and 425 type water is that their strength and setting time are different, so for some low-rise buildings, it is enough to choose 325 model. However, post-maintenance is very important, and it must be maintained frequently, otherwise the strength of the concrete will not meet the requirements.

3. For some frame structure houses, it is best to choose 425 model cement, which has a faster setting time. In addition, when laying roads or concrete, you need to choose 425 type cement.

Through the introduction, we have a certain understanding of the difference between 325 type cement and 425 type cement, the most important thing is that their strength is different, so we can choose different types of cement according to actual needs.

Do the math how much it will cost you to renovate your home

Cement is a building material that must be used in decoration, so every owner should have a specific understanding of cement before decoration, because if the cement is not suitable or the spring is not good, it is likely to endanger what kind of house construction, or leave huge safety hazards. So, what is the difference between 325 cement and 425 cement? What are the tips for buying cement?

Let's take a brief look at it together.

First of all, the compressive strength of the two is different, in the same unit area, the compressive strength of 325 cement should be higher, and the compressive strength of 425 cement should be higher, secondly, the height of the two is different, 425 cement per ton will be more expensive than 325 cement about 50 to 100 yuan.

Second, what are the skills for purchasing cement.

1. There may be hundreds of large and small cement brands on the market, in order to ensure the quality of the product, you should choose a regular manufacturer, so that you can also get a relatively professional pre-sale, in-sale and after-sale and other full set of services, suitable for inexperienced consumers.

2. According to experts from Qeeka Home, on high-quality cement packaging bags, there will be clear information such as the quality time, production date, license number, weight of single cement, site, business name and trademark, but if it is a fake and shoddy product, the packaging will be rougher.

3. To buy cement, merchants must be required to show a product inspection certificate, because the current building materials industry is more popular, and there are many black-hearted businesses, so this is also one of the reasons why you must choose a brand to buy, and you must not buy three no products.

4. The quality of cement is the key to purchasing, first look at the color of cement, it is generally grayish-white, if the color of cement is too dark, it may be doped with other things, it is best not to buy, and secondly, look at the texture of cement, there will be graininess, but it is very delicate.

Summary: What is the difference between 325 cement and 425 cement, and what are the tips for purchasing cement, I hope it will help you. If you want to know more about related information, please pay attention to Qeeka Home.

1. The differences between 325 cement and 425 cement are:

1. Different uses: 325 cement is generally used for small projects such as tiling, wall building, and wall painting; 425 is generally used for large projects such as paving roads, large pillars, and building houses.

2. Different strength: 325 cement is soft cement, and its strength is far less than that of 425 cement, while 425 cement belongs to hard cement.

3. **Different: the cost of 425 is more expensive than that of 325; The later maintenance of 325 cement is simpler.

2. Precautions for the use of cement:

1. Avoid hardening by moisture: cement hardened by moisture will reduce or even lose its original strength.

2. Avoid exposure to the sun and dry quickly: if the concrete or plastering is exposed to the sun after operation, with the rapid evaporation of water, its strength will be reduced, or even completely lost.

3. Avoid freezing at negative temperature: After the concrete or mortar is mixed, if it is frozen, the cement cannot be hydrated, and the water freezes and expands, then the concrete or mortar will be destroyed by the powder that gradually deepens from the surface and the inside.

4. Avoid high temperature and extreme heat: the solidified mortar layer or concrete components will have strength loss if they are often under high temperature and hot conditions.

Cement is an indispensable auxiliary material in decoration, there are two kinds of common cement on the market, namely 325 cement and 425 cement, but many people are not very clear about these two kinds of cement, today I will introduce to you what is the difference between 325 cement and 425 cement, and how to choose the right cement, interested friends to learn about it.

What is the difference between 325 cement and 425 cement

1. The hardness is different: 325 cement is soft, and 425 cement is hard.

2. The compressive strength is different: the compressive strength of 325 cement should generally not be less than that after 28 days of curing, and the compressive strength of 425 cement after 28 days can not be less. The fundamental reason for the difference in the strength of 325 cement and 425 cement is that in cement production, by controlling the different elements of the production process such as the ratio of different components of cement raw materials, firing time, etc., cement of different strengths is finally produced, which is used to improve the market demand of different cement markets.

3. Different uses: 325 cement is generally more suitable for pasting tiles, building walls, brushing walls, plastering, etc. 425 cement is suitable for concrete, paving streets, bridge beams and slabs and other purposes.

How to choose the right cement

1. First of all, we can wash the outer packaging of the mud bag according to the water, and see if there is a clear manufacturer and specifications on it. Then we can cut a bag of cement, feel whether the cement is clean and delicate with our hands, if the cement is too rough must be of bad quality, we must not buy.

2. Cement is divided into 325 cement and 425 cement, and it is necessary to select the appropriate grade of cement according to the part of the cement used. If it is used for load-bearing, be sure to choose a stronger one. If it is only used for simple decoration, we can choose the sub-sturdy one.

3. There is also a special need to pay attention to the expiration date of cement, because the cement reacts with water, and the phenomenon of agglomeration will occur. When a bag of cement is agglomerate, its effectiveness is greatly reduced. Therefore, when we buy, we must choose the production date that is relatively close, so that the quality will be more guaranteed.

That's all there is to it".What is the difference between 325 cement and 425 cement and how to choose the right cement".