活性粉末混凝土柱火灾后性能试验研究

Q3 Earth and Planetary Sciences

Scientific Review Engineering and Environmental Sciences Pub Date : 2021-07-05 DOI:10.22630/PNIKS.2021.30.2.27

M. Kadhum, Mustafa S. Abdulraheem, Yousif Funfakh, M. Gkantou, Z. Mahdi, Zaid Mohammed

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引用次数: 1

摘要

活性粉末混凝土(RPC)在混凝土结构中的应用越来越多，引起了人们对RPC在火灾中的结构性能的关注。这项工作通过实验研究了RPC和NSC柱在25%的极限载荷下的性能，并在不同温度水平下暴露于直接火焰中30和60分钟。本文旨在评估这种类型的混凝土柱所能承受的最高温度水平和火灾持续时间。结果表明:未加筋RPC柱的破坏模式为突然剪切破坏，加筋RPC柱的破坏模式为破碎破坏，并伴有一定的拉杆断裂。RPC柱在高温下剧烈剥落;此外，在相同条件下，与NSC柱相比，极限强度明显降低。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Experimental investigation on the post-fire performance of reactive powder concrete columns

The increased use of reactive powder concrete (RPC) in concrete structures has attracted attention towards the structural behavior of RPC in fires. This work examines experimentally the performance of RPC and NSC columns subjected to 25% of the ultimate load and exposed to direct fire flame for a period of 30 and 60 min at various temperature levels. The paper aims to evaluate the maximum temperature level and fire duration that can be withstood by this type of concrete columns. The results show that the failure mode of RPC columns without reinforcement is a sudden shear failure, whereas the failure mode of reinforced RPC columns is a crushing failure with rupture of certain ties. The RPC columns at high temperatures spall intensively; additionally, the ultimate strength clearly decreases compared to the NSC columns at the same conditions.

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来源期刊

Scientific Review Engineering and Environmental Sciences Earth and Planetary Sciences-Earth-Surface Processes

CiteScore

1.50

自引率

0.00%

发文量

审稿时长

26 weeks

期刊介绍： Scientific Review Engineering and Environmental Sciences [Przegląd Naukowy Inżynieria i Kształtowanie Środowiska] covers broad area of knowledge and practice on fields such as: sustainable development, landscaping of non-urbanized lands, environmental engineering, construction projects engineering land management, protection and land reclamation, environmental impact of investments, ecology, hydrology and water management, ground-water monitoring and restoration, geotechnical engineering, meteorology and connecting subjects. Authors are welcome to submit theoretical and practice-oriented papers containing detailed case studies within above mentioned disciplines. However, theoretical papers should contain part with practical application of the theory presented. Papers (in Polish or English languages) are accepted for publication after obtaining positive opinions of two reviewers. Papers published elsewhere are not accepted.