Flexural Behavior of Reinforced Concrete Beams Covered by Gypsum Layers and Exposed to Elevated Temperatures
نویسندگان
چکیده
The paper presents results of exposure normal concrete to elevated temperatures (400 and 700) °C covered by layers (gypsum plaster) with different thicknesses (10 20) mm. casted specimens for each type test were divided into three groups. first was without covering the surface gypsum, while second third groups gypsum outer a thickness 10 20 mm, respectively. experimental found that ultimate load capacity crack RC beams improved using through 400°C. At (P cr P u ) loss about (8 6) % (1 7) respectively, compared not rate is (25 13) %, this clear evidence benefit in reducing Elevated Temperatures directly concrete. As temperature 700, reduction (57 22) (31 16) 15) at 0, 10, mm thickness, Through figures shown paper, which obtained from side research, load-deflection curves when increased during specimens' fire. Where relationship between them 400°C better than exposed fire, so increasing occurrence deflection less because it protects direct heat thus prevents cracks
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ژورنال
عنوان ژورنال: E3S web of conferences
سال: 2021
ISSN: ['2555-0403', '2267-1242']
DOI: https://doi.org/10.1051/e3sconf/202131803005