What are the disadvantages of cement bricks? Advantages and disadvantages of ordinary cement

Please feel free to use it, there should be no problem, we have cement bricks for multi-storey houses below seven floors.

The production process of cement bricks is very mature. The site was randomly sampled and sent to the laboratory for re-examination, and the strength of cement bricks was better than that of red bricks.

Better, but also good durability, standard size, complete shape, uniform color. The only drawback is with a plastering mortar.

The combination is not as good as red brick, which is easy to produce cracks on the wall and affect the appearance. The cracks in your wall are estimated to be caused by the lack of plastering process, and the wall should be fully wet in advance during plastering construction, and you can also consider hanging steel wire mesh all over the wall, which can effectively prevent cracks.

It is much heavier than red brick and shale brick, and is not suitable for high-rise building filling. Not moisture-proof, cement bricks absorb water after being permeable, the quality is uneven, the pressure resistance of cement bricks produced by conscientious merchants and the difference between black-hearted manufacturers, cement marking is not a more important factor.

Advantages: high strength, fast coagulation and hardening at low temperatures below 10 degrees Celsius, good ice resistance.

Disadvantages: poor corrosion resistance and heat resistance, high heat of hydration.

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.

Advantages of ordinary cement: Concrete has good plasticity before setting, and can be poured into components or structures of various shapes and sizes Concrete has a firm adhesion between the concrete and the steel bar, and can be made into reinforced concrete components or structures After hardening, the concrete has the characteristics of high compressive strength and good durability, and can be used as a load-bearing member or structure for long-term use The amount of local materials such as sand and gravel in its constituent materials is very large, which is in line with the principle of local materials and economy The configuration is more flexible, Engineering requirements can be met by changing the composition of the material.

Disadvantages of ordinary cement: The tensile strength of concrete is low, and it is not suitable as a tensile member Concrete has poor ability to resist deformation, and is easy to crack and cause brittle failure Concrete weight and volume are too large, which brings great inconvenience to construction and use Concrete has strong dry shrinkage, complex production process and easy to produce quality fluctuations, and is easy to produce cracks, missing edges, falling corners, hemp surface, honeycomb, exposed tendons and other common quality problems.

One is cheaper, which is one of his advantages, and the other is that it can be used as a general building, such as a construction site or an ordinary floor.

The advantages of ordinary cement are high strength, fast coagulation and hardening at low temperatures below 10 degrees Celsius, and good ice resistance. The disadvantages of ordinary cement are poor corrosion resistance and heat resistance, and high heat of hydration.

The advantage is that it is cheap, and the disadvantage is that it is not as good as the good.

Are you referring to ordinary Portland cement?

Also, your explanation, what is the comparison of ordinary cement with it.

Stone? Steel? Resin?

Red bricks are made of clay, shale, gangue.

The raw material is crushed and mixed, and then kneaded by manual or machine.

Cement brick is a new type of wall material made of fly ash, cinder, coal gangue, etc. as the original main raw material, and cement as a coagulant without high temperature calcination.

Red bricks are made of clay, shale.

Complex, coal gangue.

Stone and other raw materials are crushed and mixed, and kneaded.

After being formed by manual or mechanical pressing, the color of ordinary burnt red bricks is red and bright, sometimes dark black, which is used for wall materials, and cement bricks are used as the main raw materials of fly ash, cinders, coal gangue, etc. as the original main raw materials, and cement is used as a coagulant without high temperature calcination to manufacture a new type of wall material.

The good point of red brick bai is to introduce it from 4 aspects.

1. Red bricks are durable. Germany has zhi

DAO1300-year-old red brick church, many years of architecture.

The inside is still visible. It is simple and elegant, and the life of cement can only reach 50 years, according to authoritative sources, the life of our country's buildings is 30 years, so buying a house in the future pays more attention to the materials and quality of the house.

2. Red bricks have breathing properties. Red bricks can regulate indoor and outdoor humidity, the simplest truth, we raise flowers with fired clay pots, the purpose is conducive to the growth of plants, for human beings is the same, living in red brick buildings is conducive to people's health, most of the European and American countries are red brick buildings.

3. The red brick material is shale. This is the country vigorously promote and use of building materials, the state prohibits the production and use of clay bricks, the shale bricks made into porous bricks are conducive to energy saving, heat insulation, sound insulation, high-grade shale porous bricks (clear water bricks) can be used for indoor and outdoor wall decoration, while playing a load-bearing, insulation, sound insulation, decorative effect.

4. Fire prevention. Now most of the buildings use external thermal insulation, thermal insulation materials belong to organic materials, is easy to produce fire, so this external thermal insulation structure and materials are infinitely hidden, the outside of the red brick building is red bricks, especially in the cold area, the thermal insulation material can be sandwiched in the middle of the wall, made into a sandwich wall structure, and the middle is linked with a rib, so that the open flame will not be in contact with the thermal insulation material, and there is no fire hazard.

When building a house, various types of materials are used, such as cement bricks. What are the advantages and disadvantages of cement bricks? PChouse will take you to find out.

First, the economic benefits are significant. The production cost and market price of cement bricks will vary depending on the raw materials and other costs in different places. Red bricks are significantly more cost-effective.

Second, the production technology is mature: using high-pressure molding technology, cement bricks have good compactness, low water absorption, good frost resistance and high strength. With these advantages, it can be applied to various urban construction projects.

Third, the cost is relatively low. More than 80% of the stone powder, waste stone or construction waste can be mixed into the environmentally friendly cement bricks, so that the cost of cement can be greatly reduced, in addition to reducing the cost of raw materials, you can also enjoy the tax exemption policy.

Fourth, the product has a wide range of uses: cement bricks have been widely used in the environmental beautification of gardens, residential quarters, colleges, factories, sidewalks, squares, etc.

Fifth, the investment in equipment is small, and the speed of putting into production is fast. The establishment of an annual output of 60,000 manuscripts of grinding silver square meters and 120,000 square meters of color pavement brick production line, equipment investment is small, and from equipment installation and commissioning, training of workers, to the formation of a batch of production capacity is short.

Cement tile is a kind of colorful crack and beautiful type of floor tile with changeable patterns, cement tile has the advantage of wear resistance, but before buying cement tile, people not only need to understand its advantages but also understand its disadvantages, so what are the disadvantages of cement tiles? Today, PCHOUSE will answer them for you one by one.

1. The ** of cement tiles will be more expensive, and the ** of high-quality cement tiles will be much higher than ordinary tiles.

2. The difficulty of laying cement tiles will be higher than that of ceramic tiles. The use of cement tiles for decoration, the construction process will generally be slower than ordinary tile construction, the construction time is long, and the cost is higher.

3. The surface texture of cement tiles is different from that of ordinary brick Nayuan shirts, and there will be many small pores that cannot be seen by the eyes. If there is water on the ground, it will slowly seep into it, and it will easily look dirty; If you have made cement tile floors at home, you should wipe the floor frequently, and if you find dirty things that can't be wiped off, wipe them with the finest sandpaper.

4. Cement tiles were introduced into China from the 30s to 40s of the last century, and many old buildings in the last century have handmade cement tiles, such as the old Shanghai Beach, Nanjing ** Mansion, Guangzhou Shamian and other old buildings.

Hollow brick advantages:

1. Thermal insulation, sound insulation and noise reduction.

Hollow brick is currently a priority product recommended by the national construction department, so its advantages are naturally very many. Hollow bricks are divided into shale hollow bricks, sintered hollow bricks, clay hollow bricks, etc., but no matter what kind of hollow bricks, the most significant feature of this type of decoration material is naturally "hollow", that is, the surface of the brick has several small holes leading to the end. Due to this unique through-through shape, hollow bricks have very good thermal insulation, sound insulation and noise reduction effects.

The opening of the hole will not only make the wall sound insulation effect of the indoor wall decoration material worse, but will have a very good sound insulation effect due to the flow of air and air pressure.

2. Reduce the total weight of the building.

There are generally six holes in the hollow brick, and the increase of these holes correspondingly reduces the total amount of material of the brick, which also reduces the total mass of the material used, so that the total mass of the building is reduced. Due to the substantial increase in China's population, the buildings are getting higher and higher, if the whole high-rise building is classified as a decorative material such as solid bricks, then the total mass of the building will be very large, and the foundation of the building is difficult to bear such a large weight while still remaining the same. As a result, the risk factor for the entire building increases considerably.

Therefore, at present, the first thing recommended by the state is hollow bricks, and foreign buildings are mainly based on the use of hollow bricks.

Hollow brick disadvantages.

First, the load-bearing capacity is poor.

Although hollow bricks have many advantages, few people use hollow bricks alone in the construction process, because hollow bricks also have quite a few disadvantages. First of all, the biggest disadvantage of hollow bricks is the poor load-bearing. Because the total mass of wall decoration materials such as hollow bricks is reduced, their load-bearing capacity is also reduced.

It is very dangerous to hang heavy objects on such a wall, even if it is filled in hollow bricks, it is not recommended to put too many things or hang too heavy items after installing wooden bookshelf shelves. If you need to hang a wall-mounted TV, you can do local grouting treatment on the hollow brick to enhance the load-bearing capacity of the hollow brick.

Second, the seismic performance is poor.

Poor seismic performance is the fatal disadvantage of hollow bricks. Due to the hollow brick is not solid, the overall weight of the brick is light, and the density of the house wall is not large enough, and the hollow brick has the disadvantage of poor seismic performance. In Yingjiang, Yunnan, some people died because of the collapse of hollow brick houses, and the local ** also banned the use of hollow bricks.

But this problem was then professionally explained by experts, the hollow bricks in the decoration and building materials encyclopedia were taken out separately to see that although the seismic performance is poor, as long as the reasonable construction, coupled with the auxiliary, such as concrete pouring, etc., its seismic performance is not different from the general solid bricks. Therefore, this shortcoming, as long as everyone builds reasonably, can be avoided.