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Effect of Fire Flame Exposure on Flexural Behavior and | ||
| Iraqi journal of mechanical and material engineering | ||
| Article 1, Volume 0, Issue 0, 2010, Pages 226-243 | ||
| Authors | ||
| Samir A. Al Mashhadi; Awad Ali Saqier; Dr. Mahdi S. Essa | ||
| Abstract | ||
| In this study flexural behavior and shear strength of reinforced concrete beams made of normal strength concrete (NSC) and high performance concrete (HPC) with compressive strength (30,78) MPa respectively at (28) days age, and assessing the residual flexural and shear strengths after exposure to fire flame. The concrete specimens were subjected to fire flame at temperature levels of (400 º C) and (700 º C) at two periods of exposure (1, 1.5) hour then cooled either by air and water. Firing and testing the beam specimens were conducted at age of (60) days. Results indicate remarkable reduction in flexural and shear strengths after exposure to fire flame. The residual flexural strength is (84- 88%), (70- 72%) for HPC, and (86- 91%), (84- 88%) for NSC with (1.0) and (1.5) hour exposure periods respectively at fire temperature (400 º C), while the residual at fire temperature (700 C) is (50-58%), (37-38%) for HPC, and (53-60%), (26-41%) for NSC with (1.0) and (1.5) hour exposure periods 93%), (75- 77%) for NSC with (1.0) and (1.5) hour exposure periods respectively at fire temperature (400 º C), while the residual at fire temperature (700 º C) is (50-55%), (40-45%) for HPC, and (54-57%), (38-46%) for NSC with (1.0) and (1.5) hour exposure periods respectively. º | ||
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