Tests of residual shear transfer strength of concrete exposed to fire

• Autorzy: Shallal M. A. , Al Musawi A. M. K.

Identyfikatory

DOI

10.2478/ace-2018-0024

• Języki publikacji: EN

Abstrakty

EN

Reinforced concrete is one of the most widely used structural components about which much scientific research has been conducted; however, some of its characteristics still require further research. The main focus of this study is the effect of direct fire on the shear transfer strength of concrete. It was investigated under several parameters including concrete strength, number of stirrup legs (the steel area across the shear plane), and fire duration. The experimental program involved the testing of two sets (groups) of specimens (12 specimens each) with different concrete strengths. Each set contained specimens of two or four stirrup legs exposed to direct fire from one side (the fire was in an open area to simulate a real-life event) for a duration of one, two, and three hours. The results of the comparison showed the importance of using high-performance concrete (instead of increasing the number of stirrup legs) to resist shear stress for the purpose of safety. A significant reduction in shear strength occurred due to the deterioration of the concrete cover after three hours of direct fire exposure.

Słowa kluczowe

EN

fire; shear transfer; compressive strength; reinforced concrete; stirrup legs

PL

pożar; przeniesienie ścinania; wytrzymałość na ściskanie; żelbet; strzemię

• Wydawca: Komitet Inżynierii Lądowej i Wodnej PAN ; Politechnika Warszawska, Wydział Inżynierii Lądowej
• Czasopismo: Archives of Civil Engineering
• Rocznik: 2018
• Tom: Vol. 64, nr 2
• Strony: 187--199
• Opis fizyczny: Bibliogr. 18 poz., il., tab.

Twórcy

autor

Shallal M. A.

• Al-Qadisiyah University, Civil Engineering Department, Al-Diwania, Iraq

autor

Al Musawi A. M. K.

• Al-Qadisiyah University, Roads and Transports Department, Al-Diwania, Iraq

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).