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Fire Resistance of Prefabricated Monolithic Reinforced Concrete Slabs of “Marko” Technology
Abstract Prefabricated monolithic slabs represent a construction structure that effectively combines the positive properties of precast reinforced concrete structures and monolithic concrete with additional reinforcement. Systems of the prefabricated monolithic constructions correspond to the modern trends, but require special attention and scrutiny. There are results of prefabricated monolithic slab fire test in the article. The prototype of the reinforced concrete slab was installed on the fire chamber of the test installation with an applied static load in accordance with the design scheme. There are results of prefabricated monolithic slab fire test on the temperature effect in the article. Signs of construction limit states and collapse of the structure were not registered after 125-min fire testing, and also there are no through cracks and holes on the unheated side of the samples. Visual inspection of prototypes of prefabricated monolithic reinforced concrete slab was carried out after their removal from the test installation, according to the results of which it was established that there was no deformation (kink), a slight damage to the heated surface and no destruction of the metal and concrete of beams. To create a methodology for calculating the prefabricated monolithic slab on the flame impingement, it is necessary to carry out further tests for fire resistance taking into account the span of the structure, as well as the type of filling blocks.
Fire Resistance of Prefabricated Monolithic Reinforced Concrete Slabs of “Marko” Technology
Abstract Prefabricated monolithic slabs represent a construction structure that effectively combines the positive properties of precast reinforced concrete structures and monolithic concrete with additional reinforcement. Systems of the prefabricated monolithic constructions correspond to the modern trends, but require special attention and scrutiny. There are results of prefabricated monolithic slab fire test in the article. The prototype of the reinforced concrete slab was installed on the fire chamber of the test installation with an applied static load in accordance with the design scheme. There are results of prefabricated monolithic slab fire test on the temperature effect in the article. Signs of construction limit states and collapse of the structure were not registered after 125-min fire testing, and also there are no through cracks and holes on the unheated side of the samples. Visual inspection of prototypes of prefabricated monolithic reinforced concrete slab was carried out after their removal from the test installation, according to the results of which it was established that there was no deformation (kink), a slight damage to the heated surface and no destruction of the metal and concrete of beams. To create a methodology for calculating the prefabricated monolithic slab on the flame impingement, it is necessary to carry out further tests for fire resistance taking into account the span of the structure, as well as the type of filling blocks.
Fire Resistance of Prefabricated Monolithic Reinforced Concrete Slabs of “Marko” Technology
Nedviga, Ekaterina (author) / Beresneva, Natalia (author) / Gravit, Marina (author) / Blagodatskaya, Angelina (author)
2017-12-19
11 pages
Article/Chapter (Book)
Electronic Resource
English
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