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The high-rise building is obviously made of concrete, so why does the whole building burn after a fire? mortar bonding agent

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First, concrete soaks up and moves warmth much more easily than dissipates heat quickly. When a fire occurs, it has the effect of supporting combustion, which is equivalent to including gas to the fire. The more it melts, the larger it gets. Concrete might appear attractive and strong, yet in fact, maybe better than adobe homes. There is no thermal insulation and warmth dissipation effect like adobe bricks.

(burning concrete building)

On the various other hand, I just scratched the surface area. If the steel-concrete framework of a skyscraper is white, there will certainly not be a great deal of smoke and fire if it sheds. It is mainly made from interior decoration materials, mostly organic materials, oil, or plastic materials., when ignited, the fire will certainly become tough and create a big quantity of black smoke.

Second, fires in high-rise buildings can thaw concrete and steel bars. Oxygen supports combustion. On top of that, the temperature generated by the auxiliary combustion of various other flammable products in the building is very high. Besides, it is not a fire in a country home. In the 911 event, one building was ruined by a plane. After the crash, it did not collapse at the time. Later on, the fire triggered by the impact shed and melted the main body of strengthened concrete and lastly fell down.

(burning concrete building)

On the various other hand, indoor design materials, home devices and furniture are mostly combustible. If one floor burns for a long time, the temperature will permeate the flooring and stir up the top and reduced floors. The floor is high and gusty, with good air flow and high oxygen web content. The high-temperature warm flow will certainly create a smoke. Power, the fire should be extremely intense.

Third, the foam plastic used for outside wall surface insulation is the culprit. Foam plastics are frequently made use of in Europe and the USA, so a team of specialists introduced this technology. However they obviously need to have taken into account that a lot of international structures are 2- or three-story domestic buildings, and fire defense needs are low. Once a fire breaks out in the building, it will certainly create significant repercussions. Two- and three-story structures are not mainstream in China, and even in rural areas, there are extremely few of them. To introduce innovation, we must consider the current situation of residential building. Or else, we will be learning in Handan.

(burning concrete building)

4th, the emphasis is not on area furniture and wood items but on the fact that paint is made use of in all building decors, such as wall paint. Also high-end wall coverings are textiles. Paint or fabrics are inherently combustible objects. On top of that, lots of various other design materials have various colors. The shades are also made from various kinds of paint. Once they come across high temperatures, they will melt also if there is no open flame.

On the other hand, I have actually seen lots of people claiming that the top quality of thermal insulation products is not up to par. Actually, it is not simply moisture-retaining materials. The nation likewise has matching fire retardant requirements for wood used for interior design and furnishings of skyscrapers, yet furnishings manufacturing facilities and structure products factories will avoid this. Average consumers do not understand the trouble, so generally, the wooden materials on the market are non-fire retardant products, whether they are used in skyscrapers or otherwise.

(burning concrete building)

Fifth, ideas from firefighters to avoid problems before they take place: Each floor ought to be outfitted with a fire hydrant. If the location is huge, you can also equip a number of. If a fire takes place, promptly manage the fire to avoid the fire from infecting other floorings. If it is a residential structure, each home should be geared up with a small fire hydrant. Once a fire happens in your home, the fire can be promptly regulated within your own home. Additionally, furnishings, drape decoration, and so on, should be constructed from non-combustible products. The level of fire protection automation in high-rise buildings is fairly high. The person responsible for fire protection in skyscrapers remains in area and responsible, and inspections and drills are in area. Discharges can be protected against by managing combustibles, combustion-supporting products and fire sources.

The production procedure of concrete is a vital variable affecting its fire resistance. Among them, the control of the water-cement ratio is essential. Too expensive or too low a water-cement proportion may have adverse effects on the fire resistance of concrete. Furthermore, the top quality and form of the stones in concrete will certainly additionally have an impact on its fire resistance. Utilizing difficult and regular-shaped stones can improve the fire resistance of concrete.

Relating to the detection of fire resistance, there are numerous commonly used techniques, such as high-temperature examination approach, fire test technique, thermogravimetric analysis method, and infrared spectroscopy technique. These methods examine the fire resistance of concrete by mimicing high-temperature atmospheres or directly observing the performance modifications of concrete at high temperatures.

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