Сборник статей Международной научно-практической конференции 20 августа 2021 г
Настоящий сборник составлен по итогам Международной научно-практической конференции
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Игамбердиев Холмурод Хайдарович 111 TECHNIQUE INCREASE IN FIRE RESISTANCE
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- И 73 ИНТЕГРАЦИЯ НАУКИ, ОБЩЕСТВА, ПРОИЗВОДСТВА И ПРОМЫШЛЕННОСТИ: 9 УДК62
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Настоящий сборник составлен по итогам Международной научно-практической конференции
ISBN 978-5-00177-248-4 ПРОБЛЕМЫ И ПЕРСПЕКТИВЫ: сборник статей Международной научно-практической конференции (20 августа 2021 г., г. Воронеж). - Уфа: Аэтерна, 2021. – 212 с. УДК 00(082) + 001.18 + 001.89 ББК 94.3 + 72.4: 72.5 И 73 И 73 ИНТЕГРАЦИЯ НАУКИ, ОБЩЕСТВА, ПРОИЗВОДСТВА И ПРОМЫШЛЕННОСТИ: 9 УДК62 Science Supervisor: Igamberdiev Kholmurod Khaidarovich Cand. Sciences, associate professor Jizzakh Polytechnic Institute Abdurakhmanov Azizjon Mahmudjon ugli student Jizzakh Polytechnic Institute, Uzbekistan, Jizzakh Pak Diana Aleksandrovna Student. Jizzakh State Pedagogical Institute named after A. Kadiri TECHNIQUE INCREASE IN FIRE RESISTANCE METAL DESIGNS Annotation. In this article it is investigated techniques of increase in fire resistance metal designs in the different ways. At the same time it is analyzed and integrated for industrialization improvement further. Key words: Concrete, method, designs, construction, characteristic, limit, fire resistance, buildings, elements, designs. The highest point of fire resistance of building constructions – important property which needs to be considered at construction of all buildings and constructions. This term note ability colon, beams, channels and other wooden or metal designs For designs specifically decrease of rigidity and durability with further transition to a plastic state. For the purpose of increase in a side of fire resistance of metalwork use: Concreting, facing from a brick. Use of fire protection of metal designs with supports of concrete and a bricklaying especially reasonably when along with fire protection of designs it is required to develop their strengthening, for example, at reconstruction of houses. Brick facing is used for fire protection of vertically being designs. Reinforcing of fireproof facing from a brick is appointed taking into account increase in communication in angular points of a bricklaying. Diameter of cores of fittings accept no more 8th millimeter. At application of facing from a brick it is necessary to execute protection of metalwork against rust according to Construction Norms and Regulations 2.03.11–85. Veneering from concrete and a bricklaying guarantees extremely probable top of not combustibility, they are steady against atmospheric actions and aggressive spheres. For fastening of sheet and tiled materials to a metal design weld on fixing components (metal plates, corners, probes). The order of this security measure does not ask clarification of a surface of the protected designs from earlier put painting coverings. Sheet and slabby facings and screens are actually constructive for columns, racks and beams. However for farms of overlapping and interrelations use of these means of protection is irrational. Plasters. Use of cement and sand plaster is caused by those advantages as the low cost of the used materials for training of structure, providing a significant limit of fire resistance of the protected design (till 2.5 o'clock), resistance to atmospheric actions. At the same time this security measure has several shortcomings limiting its application. Belong to them: big expensive works on creation of a covering because of requirement of reinforcing by a steel grid; increase in loads of the bases of buildings due to burdening of a framework; requirement of the use of anticorrosive structures. Besides, plasters do not meet esthetic requirements in any way and cannot be applied on designs of a difficult figure (farms, communications, etc.). It should be noted that plaster mixes on liquid glass, lime and plaster have every chance to be applied in rooms with relative dampness no more than 60 % . Fireproof structures thermo — the 10 increasing type Structures of the thermo increasing type are considered as one of the promising directions of fire protection. Their influence is based on swelling of the put covering under the influence of high temperatures (170 - 250C) and formation of a porous heat - insulation layer. At the same time the fireproof covering from 0.5 to 2 millimeters wide increases in volume at 10 - 40 times and guarantees fireproof efficiency from 0.5 to 1.5 hours. It should be noted that undermining of fireproof structures is made on the soil specified in the testimony of fire safety. Before causing fireproof structures it is necessary to carry out clarification of the plane of the protected design from before the put painting coverings, corrosion, to degrease and ground. Water dispersive fireproof structures are used for defense of metal blocks in the shut rooms with dampness to 85 % . Temporary influence for their sprayed water is allowed. Besides, there are the atmospheres steady fireproof mixes on organic solvent. Important and the fact that fireproof structures can be used for the purpose of fire protection of metal designs of a configuration of any complexity. Download 0.69 Mb. Do'stlaringiz bilan baham: |
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