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

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First, concrete takes in and transfers warm more easily than dissipates heat easily. When a fire happens, it has the result of supporting burning, which amounts including fuel to the fire. The more it burns, the bigger it gets. Concrete may seem attractive and solid, yet actually, it could be much better than adobe homes. There is no thermal insulation and warm dissipation effect like adobe bricks.

On the various other hand, I just scraped the surface. 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 primarily made of interior decoration materials, primarily organic products, oil, or plastic materials., as soon as sparked, the fire will certainly come to be tough and produce a big amount of black smoke.

Second, fires in skyscrapers can melt concrete and steel bars. Oxygen sustains burning. On top of that, the temperature level generated by the supporting combustion of various other combustible things in the building is really high. Besides, it is not a fire in a country home. In the 911 occurrence, one structure was ruined by an airplane. After the crash, it did not collapse at the time. Later on, the fire caused by the impact burned and melted the text of enhanced concrete and finally fell down.

On the other hand, indoor decor products, home devices and furniture are primarily combustible. If one flooring burns for a long time, the temperature will certainly penetrate the flooring and fire up the top and reduced floorings. The flooring is high and gusty, with good air flow and high oxygen content. The high-temperature warmth circulation will develop a smog. Power, the fire has to be extremely fierce.

Third, the foam plastic used for outside wall surface insulation is the offender. Foam plastics are generally made use of in Europe and the USA, so a team of specialists introduced this technology. Yet they obviously ought to have taken into account that a lot of foreign buildings are two- or three-story household structures, and fire protection requirements are reduced. As soon as a fire breaks out in the building, it will create major consequences. Two- and three-story buildings are not mainstream in China, and also in rural areas, there are very few of them. To introduce innovation, we should take into consideration the present situation of residential building and construction. Otherwise, we will be learning in Handan.

Fourth, the emphasis is not on room furniture and timber products however on the fact that paint is used in all constructing designs, such as wall surface paint. Even high-end wall coverings are fabrics. Paint or fabrics are inherently flammable items. On top of that, lots of various other decor products have numerous colors. The colors are likewise made from different types of paint. Once they come across heats, they will melt also if there is no open fire.

On the various other hand, I have seen lots of people stating that the quality of thermal insulation materials is unsatisfactory. In fact, it is not just moisture-retaining products. The nation additionally has equivalent flame resistant criteria for wood used for interior design and furnishings of high-rise buildings, however furniture factories and building products factories will certainly avoid this. Normal consumers don't understand the trouble, so primarily, the wood materials on the marketplace are non-fire resistant materials, whether they are utilized in high-rise buildings or otherwise.

Fifth, tips from firemens to prevent troubles before they take place: Each flooring must be equipped with a fire hydrant. If the location is large, you can also equip numerous. If a fire happens, rapidly manage the fire to avoid the fire from spreading to other floors. If it is a residential building, each house must be furnished with a tiny fire hydrant. As soon as a fire takes place in your home, the fire can be quickly controlled within your very own home. Additionally, furnishings, curtain decor, etc, must be made from non-combustible materials. The level of fire defense automation in skyscrapers is reasonably high. The individual in charge of fire protection in high-rise buildings remains in location and responsible, and examinations and drills remain in location. Discharges can be stopped by controlling combustibles, combustion-supporting products and fire resources.

The production procedure of concrete is a vital variable affecting its fire resistance. Amongst them, the control of the water-cement ratio is crucial. Too high or as well low a water-cement proportion might have unfavorable results on the fire resistance of concrete. In addition, the top quality and form of the stones in concrete will also have an influence on its fire resistance. Utilizing hard and regular-shaped stones can boost the fire resistance of concrete.

Concerning the discovery of fire resistance, there are several frequently made use of approaches, such as high-temperature test method, flame test technique, thermogravimetric evaluation approach, and infrared spectroscopy technique. These techniques review the fire resistance of concrete by mimicing high-temperature settings or directly observing the efficiency changes of concrete at high temperatures.

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