Punching shear of reinforced concrete slabs bonded with reactive powder after exposure to fire

IF 1.5 Q2 ENGINEERING, MULTIDISCIPLINARY

Open Engineering Pub Date : 2023-01-01 DOI:10.1515/eng-2022-0393

R. Atea, Hasanain M. Dheyab, Rasha A. Aljazaari

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引用次数: 0

Abstract

Abstract Reactive powder concrete (RPC) is one of the most recent and significant advancements in the world of building. Due to its higher concrete characteristics, it has a common excessive benevolence happening in the globe at the moment, excessive ductility, shrinkage resistance, and corrosion and abrasion resistance. Investigated is the method for amending the RPC experimentally in punching shear slab action and the properties of construction material to investigate properties of volumetric ratios of steel fiber, and silicas fume, tensile steel ratio, the most important component for construction is reinforced concrete, which works well with other materials to create structures in any shape that is needed. In the present research, investigational work of RC slab with (1,000 × 1,000 × 60) mm dimensions was tested. This study aims to see how the relative volume of steel fibers (Vf) and silica fume content (Sf) affect the actions of RC slabs after being exposed to fire. It originated that a concrete mix containing 2% steel fibers improved the RPC slab's cracking and final punching shear. The existence of reactive powder increases fire resistance. This study's experiment aimed to see how reactive powder and Slab's ultimate punching shear strength were affected by replacement ratio. Whenever a fire is present. After fire exposure, the initial and subsequent stiffness of reinforced concrete slabs reduced considerably the temperature grew from 25 to 750°C.

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活性粉末粘结钢筋混凝土板火灾后的冲切

活性粉末混凝土(RPC)是世界建筑领域最新和最重要的进展之一。由于其具有较高的混凝土特性，因此具有目前全球普遍存在的过度塑性、过度延性、过度抗缩性、过度耐蚀耐磨性。研究了在冲剪板作用下修正RPC的实验方法和建筑材料的性能，以研究钢纤维的体积比，硅粉，拉伸钢比的性能，建筑中最重要的成分是钢筋混凝土，它与其他材料一起很好地创造出任何形状的结构。在本研究中，对尺寸为(1000 × 1000 × 60) mm的RC板进行了试验。本研究旨在了解钢纤维的相对体积(Vf)和硅灰含量(Sf)如何影响RC板在暴露于火灾后的行为。结果表明，掺2%钢纤维混凝土可改善RPC板的开裂性能和最终冲剪性能。活性粉末的存在增加了耐火性能。本试验旨在研究替代率对活性粉和板坯的极限冲剪强度的影响。每当有火的时候。火灾发生后，温度从25℃升高到750℃，钢筋混凝土板的初始刚度和后续刚度显著降低。

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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来源期刊

Open Engineering ENGINEERING, MULTIDISCIPLINARY-

CiteScore

3.90

自引率

0.00%

发文量

审稿时长

30 weeks

期刊介绍： Open Engineering publishes research results of wide interest in emerging interdisciplinary and traditional engineering fields, including: electrical and computer engineering, civil and environmental engineering, mechanical and aerospace engineering, material science and engineering. The journal is designed to facilitate the exchange of innovative and interdisciplinary ideas between researchers from different countries. Open Engineering is a peer-reviewed, English language journal. Researchers from non-English speaking regions are provided with free language correction by scientists who are native speakers. Additionally, each published article is widely promoted to researchers working in the same field.